Substituted polycyclic aryl and heteroaryl pyrazinones useful for selective inhibition of the coagulation cascade

Abstract

The invention relates to substituted polycyclic aryl and heteroaryl pyrazinone compounds useful as inhibitors of serine proteases of the coagulation cascade and compounds, compositions and methods for anticoagulant therapy for the treatment and prevention of a variety of thrombotic conditions including coronary artery and cerebrovascular diseases.

Description

FIELD OF THE INVENTION

This invention is in the field of anticoagulant therapy, and specifically relates to compounds, compositions and methods for preventing and treating thrombotic conditions such as coronary artery and cerebrovascular disease. More particularly, the invention relates to substituted polycyclic aryl and heteroaryl pyrazinone compounds that inhibit serine proteases of the coagulation cascade.

BACKGROUND OF THE INVENTION

Physiological systems control the fluidity of blood in mammals [Majerus, P. W. et al: Anticoagulant, Thrombolytic, and Antiplplatelet Drugs. In Hardman, J. G. and Limbird, L. E., editors: Goodman & Gilman's The Pharmacological Basis of Therapeutics. 9th edition. New York, McGraw-Hill Book Co., 1996, pp. 1341-1343]. Blood must remain fluid within the vascular systems and yet be able to undergo hemostasis, cessation of blood loss from a damaged vessel, quickly. Hemostasis or clotting begins when platelets first adhere to macromolecules in subendothelian regions of an injured and/or damaged vessels. These platelets aggregate to form the primary hemostatic plug and stimulate local activation of plasma coagulation factors leading to generation of a fibrin clot that reinforces the aggregated platelets.

Plasma coagulation factors include factors II, V, VII, VIII, IX, X, XI, and XII; these are also called protease zymogens. These coagulation factors or protease zymogens are activated by serine proteases leading to coagulation in a so called “coagulation cascade” or chain reaction [Handin, R. I.: Bleeding and Thrombosis. In Wilson, J., et al. editors: Harrison's Principles of Internal Medicine. 12th Edition, New York, McGraw-Hill Book Co., 1991, p. 350]. Coagulation or clotting occurs in two ways through different pathways. An intrinsic or contact pathway leads from XII to XIIa to XIa to IXa and to the conversion of X to Xa. Xa with factor Va converts prothrombin (II) to thrombin (IIa) leading to conversion of fibrinogen to fibrin. Polymerization of fibrin leads to a fibrin clot. An extrinsic pathway is initiated by the conversion of coagulation factor VII to VIIa by Xa. The presence of Tissue Factor and VIIa accelerates formation of Xa in the presence of calcium ion and phospholipids. Formation of Xa leads to thrombin, fibrin, and a fibrin clot as described above. The presence of one or more of these many different coagulation factors and two distinct pathways of clotting could enable the efficacious, selective control and better understanding of parts of the coagulation or clotting process.

While clotting as a result of an injury to a blood vessel is a critical physiological process for mammals such as man, clotting can also lead to disease states. A pathological process called thrombosis results when platelet aggregation and/or a fibrin clot blocks (i.e., occludes) a blood vessel. Arterial thrombosis may result in ischemic necrosis of the tissue supplied by the artery. When the thrombosis occurs in a coronary artery, a myocardial infarction or heart attack can result. A thrombosis occurring in a vein may cause tissues drained by the vein to become edematous and inflamed. Thrombosis of a deep vein may be complicated by a pulmonary embolism. Preventing or treating clots in a blood vessel may be therapeutically useful by inhibiting formation of blood platelet aggregates, inhibiting formation of fibrin, inhibiting thrombus formation, inhibiting embolus formation, and for treating or preventing unstable angina, refractory angina, myocardial infarction, transient ischemic attacks, atrial fibrillation, thrombotic stroke, embolic stroke, deep vein thrombosis, disseminated intravascular coagulation, ocular build up of fibrin, and reocclusion or restenosis of recanalized vessels.

There have been several reports of non-peptidic and peptidic compounds that act as an inhibitor of a coagulation factor present in the coagulation cascade or clotting process. In PCT Patent Application WO 25 97/40024, Sanderson et al. describe alkyl, cycloalkyl, and trifluoromethyl substituted pyrazinones reported to inhibit thrombin activity. In PCT Patent Application WO 98/08840, Duggan et al. describe 2-heterocyclylacetyl derivatives of β-alanine esters reported to inhibit αvβ3 and αvβ5 receptors and possess utility in atheriosclerosis. In PCT Patent Application WO 98/09949, Suzuki et al. describe 2-heterocyclylacetamido derivatives of 1,2-diketones and report that they inhibit proteases, especially chymase inhibitors. In PCT Patent Application WO 98/42342, Isaacs et al. describe additional alkyl, cycloalkyl, and trifluoromethyl substituted pyrazinones reported to inhibit human thrombin. In PCT Patent Application WO 99/61442, Sanderson and Naylor-Olsen describe 1-(5-methylenecarboxamidomethyleneimidazo-[1,2-a]pyridinvyl) pyrazinones without substitution in the imidazolyl portion and reported that the compounds inhibit thrombin activity. In PCT Patent Application WO 99/59591, Sanderson et al. describe 1-((N-substitutedaminopyridyl and N-substitutedphenyl)amidocarbonylmethylene)pyrazinones reported to inhibit thrombin. In PCT Patent Application WO 99/64446, Lu et al. describe 1-((N-amidinoaminooxyalkylene and N-amidinohydrazinoalkylene) amidocarbonylmethylene)pyrazinones reported to inhibit trypsin-like serine proteases and thrombin. In Japanese Patent Application 99/229491, Black et al. describe thrombin inhibiting halo and alkyl substituted pyrazinone acetamides in which the amide nitrogen is substituted by a group containing a benzimidazole or indole ring.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide compounds that are beneficial in anticoagulant therapy and that have a general structure:

It is another object of the present invention to provide methods for preventing and treating thrombotic conditions, such as coronary artery disease, cerebrovascular disease, and other coagulation related disorders. Such thrombotic conditions are prevented and treated by administering to a patient in need thereof an effective amount of a compound of Formula (I).

Various other objects and advantages of the present invention will become apparent from the following description of the invention.

DESCRIPTION OF THE INVENTION

The present invention relates to a class of compounds comprising Substituted Polycyclic Aryl and Heteroaryl Pyrazinones, which are beneficial in anticoagulant therapy for the treatment and prevention of a variety of thrombotic conditions including coronary artery and cerebrovascular disease, as given in Formula (I): or a pharmaceutically acceptable salt thereof, wherein;

J is selected from the group consisting of O and S;

J is optionally selected from the group consisting of CH—R⁶ and N—R⁶ wherein R⁶ is a linear spacer moiety having a chain length of 1 to 4 atoms linked to the point of bonding of a substituent selected from the group consisting of R^4a, R^4b, R³⁹, R⁴⁰, R⁵, R¹⁴, and R¹⁵ to form a heterocyclyl ring having 5 through 8 members;

J is optionally selected from the group consisting of CH—R⁶ and N—R⁶ wherein R⁶ is a linear spacer moiety having a chain length of 1 to 4 atoms linked to the points of bonding of both R^4a and R^4b to form a heterocyclyl ring having 5 through 8 members;

J is optionally selected from the group consisting of CH—R⁶ and N—R⁶ wherein R⁶ is a linear spacer moiety having a chain length of 1 to 4 atoms linked to the points of bonding of both R³⁹ and R⁴⁰ to form a heterocyclyl ring having 5 through 8 members;

B is formula (V): wherein D¹, D², J¹, J² and K¹ are independently selected from the group consisting of C, N, O, S and a covalent bond with the provisos that no more than one can be a covalent bond, no more than one of D¹, D², J¹, J² and K¹ is O, no more than one of D¹, D², J¹, J² and K¹ is S, one of D¹, D², J¹, J² and K¹ must be a covalent bond when two of D¹, D², J¹, J² and K¹ are O and S, and no more than four of D¹, D², J¹, J² and K¹ are N, with the provisos that D¹, D², J¹, J² and K¹ are selected to maintain an aromatic ring system and that R³², R³³, R³⁴, R³⁵, and R³⁶ are each independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, and the divalent nature of oxygen;

R⁹, R¹⁰, R¹¹, R¹², R¹⁶, R¹⁷, R¹⁸, R¹⁹, R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of heterocyclylalkoxy, N-alkyl-N-arylamino, heterocyclylamino, heterocyclylalkylamino, hydrido, acetamido, haloacetamido, amidino, guanidino, dialkylsulfonium, trialkylphosphonium, dialkylsulfoniumalkyl, carboxy, heteroaralkylthio, haloalkylthio, alkanoyloxy, alkoxy, alkoxyalkyl, haloalkoxylalkyl, heteroaralkoxy, cycloalkylamino, acylalkyl, acylalkoxy, aryloylalkoxy, heterocyclyloxy, aralkylaryl, aralkyl, aralkenyl, aralkynyl, heterocyclyl, perhaloaralkyl, aralkylsulfonyl, aralkylsulfonylalkyl, aralkylsulfinyl, aralkylsulfinylalkyl, halocycloalkyl, halocycloalkenyl, cycloalkylsulfinyl, cycloalkylsulfinylalkyl, cycloalkylsulfonyl. cycloalkylsulfonylalkyl, heteroarylamino, N-heteroarylamino-N-alkylamino, heteroaralkylamino, cycloalkoxy, cycloalkenyloxy, cycloalkoxyalkyl, cycloalkylalkoxy, cycloalkenyloxyalkyl, cycloalkylenedioxy, halocycloalkoxy, halocycloalkoxyalkyl, halocycloalkenyloxy, halocycloalkenyloxyalkyl, hydroxy, amino, alkoxyamino, thio, nitro, alkylamino, alkylthio, alkylthioalkyl, arylamino, aralkylamino, arylthio, arylthioalkyl, heteroaralkoxyalkyl, alkylsulfinyl, alkylsulfinylalkyl, arylsulfinylalkyl, arylsulfonylalkyl, heteroarylsulfinylalkyl, heteroarylsulfonylalkyl, alkylsulfonyl, alkylsuifonylalkyl, haloalkylsulfinylalkyl, haloalkylsulfonylalkyl, alkylsulfonamido, alkylaminosulfonyl, amidosulfonyl, monoalkyl amidosulfonyl, dialkylamidosulfonyl, monoarylamidosulfonyl, arylsulfonamido, diarylamidosulfonyl, monoalkyl monoarylamidosulfonyl, arylsulfinyl, arylsulfonyl, heteroarylthio, heteroarylsulfinyl, heteroarylsulfonyl, heterocyclylsulfonyl, heterocyclylthio, alkanoyl, alkenoyl, aroyl, heteroaroyl, aralkanoyl, heteroaralkanoyl, haloalkanoyl, alkyl, alkenyl, alkynyl, alkenyloxy, alkenyloxyalky, alkylenedioxy, haloalkylenedioxy, cycloalkyl, cycloalkylalkanoyl, cycloalkenyl, cycloalkylalkyl, cycloalkenylalkyl, halo, haloalkyl, haloalkenyl, haloalkoxy, hydroxyhaloalkyl, hydroxyaralkyl, hydroxyalkyl, alkylenylamino, hydoxyheteroaralkyl, haloalkoxyalkyl, aryl, aralkyl, aryloxy, aralkoxy, aryloxyalkyl, saturated heterocyclyl, partially saturated heterocyclyl, heteroaryl, heteroaryloxy, heteroaryloxyalkyl, heteroarylalkyl, arylalkenyl, hetercarylalkenyl, carboxyalkyl, carhoalkoxy, alkoxycarboxamido, alkylamidocarbonylamido, arylamidocarbonylamido, carboalkoxyalkyl, carboalkoxyalkenyl, carboxy, carboaralkoxy, carboxamido, carboxamidoalkyl, cyano, carbohaloalkoxy, phosphono, phosphonoalkyl, diaralkoxyphosphono, and diaralkoxyphosphonoalkyl;

R¹⁶, R¹⁹, R³², R³³, R³⁴, R³⁵ and R³⁶ are independently optionally Q^b;

R³² and R³³, R³³ and R³⁴, R³⁴ and R³⁵, and R³⁵ and R³⁶ are independently optionally selected to form a spacer pair wherein a spacer pair is taken together to form a linear moiety having, from 3 through 6 atoms connecting the points of bonding of said spacer pair members to form a ring selected from the group consisting of a cycloalkenyl ring having 5 through 8 members, a partially saturated heterocyclyl ring having 5 through 8 members, a heteroaryl ring having 5 through 6 members, and an aryl with the proviso that no more than one of the group consisting of spacer pairs R³² and R³³, R³³ R³⁴, R³⁴ and R³⁵, and R³⁵ and R³⁶ are used at the same time;

R⁹ and R¹⁰, R¹⁰ and R¹¹, R¹¹ and R¹², and R¹² and R¹³ are independently optionally selected to form a spacer pair wherein a spacer pair is taken together to form a linear moiety having from 3 through 6 atoms connecting the points of bonding of said spacer pair members to form a ring selected from the group consisting of a cycloalkenyl ring having 5 through 8 members, a partially saturated heterocyclyl ring having 5 through 8 members, a heteroaryl ring having 5 through 6 members, and an aryl with the proviso that no more than one of the group consisting of spacer pairs R⁹ and R¹⁰, R¹⁰ and R¹¹, R¹¹ and R¹², and R¹² and R¹³ are used at the same time;

B is optionally formula (VI): wherein D³, D⁴, J³, and J⁴ are independently selected from the group consisting of C, N, O, and S, no more than one of D³, D⁴, J³, and J⁴ is O, no more than one of D³, D⁴, J³, and J⁴ is S, and no more than three of D¹, D², J¹, and J² are N, with the provisos that D³, D⁴, J¹, and J⁴ are selected to maintain an aromatic ring system and that R³², R³³, R³⁴, and R³⁵, and R³⁶ are each independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, and the divalent nature of oxygen;

B is optionally selected from the group consisting of hydrido trialkylsilyl, C2-C8 alkyl, C3-C8 alkenyl, C3-C8 alkylenyl, C3-C8 alkynyl, C2-C8 haloalkyl, and C3-C8 haloalkenyl wherein each member of group B is optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R₃₂, R₃₃, R₃₄, R₃₅, and R₃₆;

B is optionally selected from the group consisting of C3-C15 cycloalkyl, C5-C10 cycloalkenyl, C4-C12 saturated heterocyclyl, and C4-C9 partially saturated heterocyclyl, wherein each ring carbon is optionally substituted with R³³, a ring carbon other than the ring carbon at the point of attachment of B to A is optionally substituted with oxo provided that no more than one ring carbon is substituted by oxo at the same time, ring carbon and nitrogen atoms adjacent to the carbon atom at the point of attachment is optionally substituted with R⁹ or R¹³, a ring carbon or nitrogen atom adjacent to the R⁹ position and two atoms from the point of attachment is optionally substituted with R¹⁰, a ring carbon or nitrogen atom adjacent to the R¹³ position and two atoms from the point of attachment is optionally substituted with R¹², a ring carbon or nitrogen atom three atoms from the point of attachment and adjacent to the R¹⁰ position is optionally substituted with R¹¹, a ring carbon or nitrogen atom three atoms from the point of attachment and adjacent to the R¹² position is optionally substituted with R³³, and a ring carbon or nitrogen atom four atoms from the point of attachment and adjacent to the R¹¹ and R³³ positions is optionally substituted with R³⁴;

A is selected from the group consisting of single covalent bond, (W⁷)_rr—(CH(R¹⁵))_pa and (CH(R¹⁵))_pa—(W⁷)_rr wherein rr is an integer selected from 0 through 1, pa is an integer selected from 0 through 6, and W⁷ is selected from the group consisting of O, S, C(O), C(S), C(O)S, C(S)O, C(O)N(R⁷), C(S)N(R⁷), (R⁷)NC(O), (R⁷)NC(S), S(O), S(O)₂, S(O)₂N(R⁷) (R⁷)NS(O)₂, Se(O), Se(O)₂, Se(O)₂N(R⁷), (R⁷)NSe(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷C(NR⁷)N(R⁷), (R⁷)NC(NR⁷), (R⁷)NC(NR⁷)NR⁷, and N(R⁷) with the proviso that no more than one of the group consisting of rr and pa is 0 at the same time;

R⁷ and R⁸ are independently selected from the group consisting of hydrido, hydroxy, alkyl, alkenyl, aryl, aralkyl, aryloxy, alkoxy, alkenyloxy, alkylthio, alkylamino, arylthio, arylamino, acyl, aroyl, heteroaroyl, aralkoxyalkyl, heteroaralkoxyalkyl, aryloxyalkyl, alkoxyalkyl, alkenyloxyalkyl, alkylthoalkyl, arylthioalkyl, aralkoxyalkyl. heteroaralkoxyalkyl, alkylsulfinylalkyl, alkylsulfonylalkyl, heteroaryl, heteroaryloxy, heteroarylamino, heteroaralkyl, heteroaralkyloxy, heteroaralkylamino, and heteroaryloxyalkyl;

R¹⁴, R¹⁵, R³⁷, R³⁸, R³⁹, R⁴⁰, R⁴¹ and R⁴² are independently selected from the group consisting of amidino, hydroxyamino, hydrido, hydroxy, halo, cyano, aryloxy, amino, alkylamino, dialkylamino, hydroxyalkyl, aminoalkyl, acyl, aroyl, heteroaroyl, heteroaryloxyalkyl, sulfhydryl, acylamido, alkoxy, alkylthio, arylthio, alkyl, alkenyl, alkynyl, aryl, aralkyl, aryloxyalkyl, aralkoxyalkylalkoxy, alkylsulfinylalkyl, alkylsulfonylalkyl, aralkylthioalkyl, heteroaralkoxythioalkyl, alkoxyalkyl, heteroaryloxyalkyl, alkenyloxyalkyl, alkylthioalkyl, arylthioalkyl, cycloalkyl, cycloalkylalkyl, cycloalkylalkenyl, cycloalkenyl, cycloalkenylalkyl, haloalkyl, haloalkenyl, halocycloalkyl, halocycloalkenyl, haloalkoxy, haloalkoxyalkyl, haloalkenyloxyalkyl, halocycloalkoxy, halocycloalkoxyalkyl, halocycloalkenyloxyalkyl, saturated heterocyclyl, partially saturated heterocyclyl, heteroaryl, heteroarylalkyl, heteroarylthioalkyl, heteroaralkylthioalkyl, monocarboalkoxyalkyl, dicarboalkoxyalkyl, monocyanoalkyl, dicyanoalkyl, carboalkoxycyanoalkyl, alkylsulfinyl, alkylsulfonyl, haloalkylsulfinyl, haloalkylsulfonyl, arylsulfinyl, arylsulfinylalkyl, arylsulfonyl, arylsulfonylalkyl, aralkylsulfinyl, aralkylsulfonyl, cycloalkylsulfinyl, cycloalkylsulfonyl, cycloalkylsulfinylalkyl, cycloalkylsufonylalkyl, heteroarylsulfonylalkyl, heteroarylsulfinyl, heteroarylsulfonyl, heteroarylsulfinylalkyl, aralkylsulfinylalkyl, aralkylsulfonylalkyl, carboxy, carboxyalkyl, carboalkoxy, carboxamido, carboxamidoalkyl, carboaralkoxy, trialkylsilyl, dialkoxyphosphono, diaralkoxyphosphono, dialkoxyphosphonoalkyl, and diaralkoxyphosphonoalkyl with the proviso that R³⁷ and R³⁸ are independently selected from other than formyl and 2-oxoacyl and R³⁸ is optionally substituted at from one through three of the ring carbons with a substituent selected from the group consisting of R¹⁶, R¹⁷, R¹⁸, and R¹⁹;

R¹⁴ and R¹⁴, when bonded to different carbons, are optionally taken together to form a group selected from the group consisting of covalent bond, alkylene, haloalkylene, and a linear moiety spacer selected to form a ring selected from the group consisting of cycloalkyl ring having from 5 through 8 members, cycloalkenyl ring having from 5 through 8 members, and a heterocyclyl having from 5 through 8 members;

R¹⁵ and R¹⁵, when bonded to different carbons, are optionally taken together to form a group selected from the group consisting of covalent bond, alkylene, haloalkylene, and a linear moiety spacer selected to form a ring selected from the group consisting of a cycloalkyl ring having from 5 through 8 members, a cycloalkenyl ring having from 5 through 8 members, and a heterocyclyl having from 5 through 8 members;

R¹⁵ and R¹⁵, when bonded to different carbons, are optionally taken together to form a group selected from the group consisting of covalent bond, alkylene, haloalkylene, and a linear moiety spacer selected to form a ring selected from the group consisting of cycloalkyl ring having from 5 through 8 members, cycloalkenyl ring having from 5 through 8 members, and a heterocyclyl having from 5 through 8 members;

Ψ is selected from the group consisting of NR⁵, O, C(O), C(S), S, S(O), S(O)₂, ON(R⁵), P(O)(R⁸), and CR³⁹R⁴⁰;

R⁵ is selected from the group consisting of hydrido, hydroxy, amino, alkyl, alkenyl, alkynyl, aryl, aralkyl, aryloxy, aralkoxy, alkoxy, alkenyloxy, alkylthio, arylthio, aralkoxyalkyl, heteroaralkoxyalkyl, aryloxyalkyl, alkoxyalkyl, alkenyloxyalkyl, alkylthioalkyl, arylthioalkyl, aralkoxyalkyl, heteroaralkoxyalkyl, alkylsulfinylalkyl, alkylsulfonylalkyl, cycloalkyl, cycloalkylalkyl, cycloalkylalkenyl, cycloalkenyl, cycloalkenylalkyl, haloalkyl, haloalkenyl, halocycloalkyl, halocycloalkenyl, haloalkoxyalkyl, haloalkenyloxyalkyl, halocycloalkoxyalkyl, halocycloalkenyloxyalkyl, heteroaryl, heteroarylalkyl, monocarboalkoxyalkyl, monocarboalkoxy, dicarboalkoxyalkyl, monocarboxamido, monocyanoalkyl, dicyanoalkyl, carboalkoxycyanoalkyl, acyl, aroyl, heteroaroyl, heteroaryloxyalkyl, and dialkoxyphosphonoalkyl;

R³⁹ and R⁴⁰, when bonded to the same carbon, are optionally taken together to form a group selected from a group consisting of oxo, thiono, R⁵—N, alkylene, haloalkylene, and a linear moiety spacer having from 2 through 7 atoms to form a ring selected from the group consisting of a cycloalkyl ring having from 3 through 8 members, a cycloalkenyl ring having from 3 through 8 members, and a heterocyclyl ring having from 3 through 8 members;

R² and R¹ are independently selected from the group consisting of Z⁰-Q, hydrido, alkyl, alkenyl, and halo with the provisos that R² is selected from other than the group consisting of hydrido, alkyl, cycloalkyl, and trifluoromethyl and R¹ is selected from other than the group consisting of hydrido and halo unless E¹ is other than C(O)NH, or unless E⁰ is selected from the group consisting of E² and E³, or unless K is other than (CR^4aR^4b)_n wherein n is 1 unless one of R^4a and R^4b are independently selected from other than hydrido, or unless Ψ is selected from other than NR⁵, or unless R⁵ is selected from other than hydrido, or unless Y⁰ is selected from other than wherein Q^s is C_1-4 alkyl, C_3-4 alkenyl or C_3-4 alkynyl where the C_1-4 alkyl, C_3-4 alkenyl or C_3-4 alkynyl group is bonded concurrently to E¹ wherein E¹ is C(O)NH and to the 4-position of an imidazole, the 4-position of a thiazole or the 5-position of a thiazole, or unless a spacer pair is present selected from the group of spacer pairs consisting of R² and R^4a, R² and R^4b, R² together with both R^4a and R^4b, R² and R¹⁴, R² and R¹⁵, and R⁶ with another group selected from the group consisting of R^4a, R^4b, R^4a and R^4b together, R³⁹, R⁴⁰, R³⁹ and R⁴⁰ together, R¹⁴, R¹⁵, and R⁵, that R² is selected from other than the group consisting of alkyl, aryl, and heteroaryl and R¹ is selected from other than the group consisting of hydrido unless E¹ is other than C(O)NH, or unless E⁰ is selected from the group consisting of E² and E³, or unless K is other than (CR^4aR^4b)_n wherein n is 1 unless one of R^4a and R^4b are independently selected from other than hydrido, or unless Ψ is selected from other than NR⁵, or unless R⁵ is selected from other than hydrido, or unless R³⁷ and R³⁸ are independently selected from other than formyl and 2-oxoacyl, that R² is selected from other than the group consisting of hydroxymethyl, methyl, methoxymethyl, methylthiomethyl, phenylthiomethyl, methylsulfinyl, methylthio, alkoxy, cycloalkoxy, alkylthio, alkylsulfinyl, alkysulfonyl, cycloalkylthio, cycloalkylsulfinyl, and cycloalkysulfonyl, when Y⁰ is other than phenyl, mono-substituted phenyl, di-substituted phenyl, 5-(2-amino)pyridindyl, or 4-(2-amino)pyridindyl, and that R² is selected from other than the group consisting of hydrido, halo, alkyl, cycloalkyl when Y⁰ is methyleneimidazo(1,2-a)pyridinyl, 4,5-benzimidazol-5-yl, or indol-5-yl unless R¹ is selected from other than the group consisting of hydrido or halo, or unless E¹ is other than C(O)NH, or unless E⁰ is selected from the group consisting of E² and E³, or unless K is other than (CR^4aR^4b)_n wherein n is 1 unless one of R^4a and R^4b are independently selected from other than hydrido, or unless Ψ is selected from other than NR⁵ wherein R⁵ is hydrido;

R¹ is optionally selected from the group consisting of amino, aminoalkyl, alkylamino, amidino, guanidino, hydroxy, hydroxyamino, alkoxy, hydroxyalkyl, alkoxyamino, thiol, alkylthio, dialkylsulfonium, trialkylphosphonium, dialkylsulfoniumalkyl, heteroarylamino, nitro, arylamino, aralkylamino, alkanoyl, alkenoyl, aroyl, heteroaroyl, aralkanoyl, heteroaralkanoyl, haloalkanoyl, hydroxyhaloalkyl, cyano, and phosphono;

R² is optionally selected from the group consisting of amidino, guanidino, dialkylsulfonium, trialkylphosphonium, dialkylsulfoniumalkyl, heteroarylamino, amino, nitro, alkylamino, arylamino, aralkylamino, alkanoyl, alkenoyl, aroyl, heteroaroyl, aralkanoyl, heteroaralkanoyl, haloalkanoyl, hydroxyhaloalkyl, cyano, and phosphono;

R² and R¹ are optionally taken together to form a spacer pair wherein the spacer pair forms a linear moiety having from 3 through 6 atoms connecting the points of bonding of said spacer pair members to form a ring selected from the group consisting of a cycloalkenyl ring having from 5 through 8 members and a partially saturated heterocyclyl ring having from 5 through 8 members;

R² and R¹ spacer pairs are optionally selected to be -W=X-Y=Z- forming a ring selected from the group consisting of a heteroaryl ring having from 5 through 6 members and an aryl, wherein W, X, Y, and Z are independently selected from the group consisting of C(R⁹), N, N(R¹⁰), O, S and a covalent bond with the provisos that one of W, X, Y, and Z is independently selected to be a covalent bond when one of W, X, Y, and Z is selected from the group consisting of O and S, no more than one of W, X, Y, and Z is selected from the group consisting of O and S, no more than three of W, X, Y, and Z are selected from the group consisting of N and N(R¹⁰), and C(R⁹), N, N(R¹⁰), O, and S are independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, the divalent nature of oxygen, and the aromaticity of the ring;

R² and R^4a, R² and R^4b, R² and R¹⁴, and R² and R¹⁵ are optionally independently selected to form spacer pairs wherein a spacer pair is taken together to form a linear moiety having from 2 through 5 atoms connecting the points of bonding of said spacer pair members to form a heterocyclyl ring having from 5 through 8 members with the proviso that no more than one of the group of spacer pairs consisting of R² and R^4a, R² and R^4b, R² and R¹⁴, and R² and R¹⁵ is used at the same time;

R² is optionally independently selected to form a linear moiety having from 2 through 5 atoms linked to the points of bonding of both R^4a and R^4b to form a heterocyclyl ring having from 5 through 8 members;

Z⁰ is selected from the group consisting of covalent single bond, (CR⁴¹R⁴²)_q wherein q is an integer selected from 1 through 6, (CH(R⁴¹))_g—W⁰—(CH(R⁴²))_p wherein g and p are integers independently selected from 0 through 3 and W⁰ is selected from the group consisting of O, S, C(O), C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁴¹), (R⁴¹)NC(O), C(S)N(R⁴¹), (R⁴¹)NC(S), OC(O)N(R⁴¹), (R⁴¹)NC(O)O, SC(S)N(R⁴¹), (R⁴¹)NC(S)S, SC(O)N(R⁴¹), (R⁴¹)NC(O)S, OC(S)N(R⁴¹), (R⁴)NC(S)O, N(R⁴²)C(O)N(R^{41 ), (R41})NC(O)N(R⁴²), N(R⁴²)C(S)N(R⁴¹), (R⁴¹)NC(S)N(R⁴²), S(O), S(O)₂, S(O)₂N(R⁴¹), N(R⁴¹)S(O)₂, Se, Se(O), Se(O)₂, Se(O)₂N(R⁴¹), N(R⁴¹)Se(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R⁴¹), ON(R⁴¹), and SiR²⁸R²⁹, and (CH(R⁴¹))_e—W²²—(CH(R⁴²))_h wherein e and h are integers independently selected from 0 through 2 and W²² is selected from the group consisting of CR⁴¹═CR⁴², CR⁴¹R⁴²═C; vinylidene), ethynylidene (C═C; 1,2-ethynyl), 1,2-cyclopropyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, and 3,4-tetrahydrofuranyl, with the provisos that R⁴¹ and R⁴² are selected from other than halo and cyano when directly bonded to N, Z⁰ is directly bonded to the pyrazinone ring, and W²² is optionally substituted with one or more substituents selected from the group consisting of R⁹, R¹⁰, R¹¹, R¹², and R¹³,

R²⁸ and R²⁹ are independently selected from the group consisting of hydrido, hydroxyalkyl, alkyl, alkenyl, alkynyl, aryl, aralkyl, aryloxyalkyl, acyl, aroyl, aralkanoyl, heteroaroyl, aralkoxyalkyl, alkylsulfinylalkyl, alkylsulfonylalkyl, aralkylthioalkyl, heteroaralkylthioalkyl, alkoxyalkyl, heteroaryloxyalkyl, alkenyloxyalkyl, alkylthioalkyl, arylthioalkyl, cycloalkyl, cycloalkylalkyl, cycloalkylalkenyl, cycloalkenyl, cycloalkenylalkyl, haloalkyl, haloalkenyl, halocycloalkyl, halocycloalkenyl, haloalkoxyalkyl, haloalkenyloxyalkyl, halocycloalkoxy, halocycloalkoxyalkyl, halocycloalkenyloxyalkyl, perhaloaryl, perhaloaralkyl, perhaloaryloxyalkyl, heteroaryl, heteroarylalkyl, heteroarylthioalkyl, heteroaralkylthioalkyl, cyanoalkyl, dicyanoalkyl, carboxamidoalkyl, dicarboxamidoalkyl, cyanocarboalkoxyalkyl, carboalkoxyalkyl, dicarboalkoxyalkyl, cyanocycloalkyl, dicyanocycloalkyl, carboxamidocycloalkyl, dicarboxamidocycloalkyl, carboalkoxycyanocycloalkyl, carboalkoxycycloalkyl, dicarboalkoxycycloalkyl, formylalkyl, acylalkyl, arylsulfinylalkyl, arylsulfonylalkyl, aralkylsulfinyl, cycloalkylsulfinylalkyl, cycloalkylsufonylalkyl, heteroarylsulfonylalkyl, heteroarylsulfinylalkyl, aralkylsulfinylalkyl, aralkylsulfonylalkyl, carboxy, dialkoxyphosphono, diaralkoxyphosphono, dialkoxyphosphonoalkyl and diaralkoxyphosphonoalkyl;

R²⁸ and R²⁹ are optionally taken together to form a linear moiety spacer having from 2 through 7 atoms and forming a ring selected from the group consisting of a cycloalkyl ring having from 3 through 8 members, a cycloalkenyl ring having from 3 through 8 members, and a heterocyclyl ring having from 3 through 8 members;

Q is formula (II): wherein D¹, D², J¹, J² and K¹ are independently selected from the group consisting of C, N, O, S and a covalent bond with the provisos that no more than one can be a covalent bond, no more than one of D¹, D², J¹, J² and K¹ can be O, no more than one of D¹, D², J¹, J² and K¹ can be S, one of D¹, D², J¹, J² and K¹ must be a covalent bond when two of D¹, D², J¹, J² and K¹ are O and S, and no more than four of D¹, D², J¹, J² and K¹ can be N, with the provisos that D¹, D², J¹, J² and K¹ are selected to maintain an aromatic ring system and that R⁹, R¹⁰, R¹¹, R¹², and R¹³ are each independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, and the divalent nature of oxygen;

Q is optionally selected from formula (III): wherein D³, D⁴, J³, and J⁴ are independently selected from the group consisting of C, N, O, and S, no more than one of D³, D⁴, J³, and J⁴ is O, no more than one of D³, D⁴, J³, and J⁴ is S, and no more than three of D³, D⁴, J³, and J⁴ are N, with the provisos that D³, D⁴, J³, and J⁴ are selected to maintain an aromatic ring system and that R⁹, R¹⁰, R¹¹, and R¹² are each independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, and the divalent nature of oxygen;

Q is optionally selected from the group consisting of hydrido, alkyl, alkoxy, alkylamino, alkylthio, haloalkylthio, alkenyl, alkynyl, saturated heterocyclyl, partially saturated beterocyclyl, acyl, aroyl, heteroaroyl, cycloalkyl, cycloalkylalkyl, cycloalkenyl, cycloalkenylalkyl, cycloalkylalkenyl, haloalkyl, haloalkoxy, haloalkenyl, halocycloalkyl, halocycloalkenyl, haloalkoxyalkyl, haloalkenyloxyalkyl, halocycloalkoxyalkyl, and halocycloalkenyloxyalkyl with the proviso that Z⁰ is selected from other than a single covalent bond when Q is hydrido;

K is (CR^4aR^4b)_n wherein n is an integer selected from 1 through 4;

R^4a and R^4b are independently selected from the group consisting of halo, hydrido, hydroxy, cyano, hydroxyalkyl, alkyl, alkenyl, aryl, aralkyl, aralkoxyalkyl, aryloxyalkyl, alkoxyalkyl, heteroaryloxyalkyl, alkenyloxyalkyl, alkylthioalkyl, aralkylthioalkyl, arylthioalkyl, cycloalkyl, cycloalkylalkyl, haloalkyl, haloalkenyl, heteroaryl, heteroarylalkyl, heteroarylthioalkyl, heteroaralkylthioalkyl, cyanoalkyl, alkylsulfinylalkyl, alkylsulfonylalkyl, haloalkylsulfinyl, arylsulfinylalkyl, arylsulfonylalkyl, heteroarylsulfonylalkyl, heteroarylsulfinylalkyl, aralkylsulfinylalkyl, and aralkylsulfonylalkyl with the provisos that halo, hydroxy, and cyano are bonded to different carbons when simultaneously present and that R^4a and R^4b are other than hydroxy or cyano when bonded to the carbon directly bonded to the pyrazinone nitrogen;

R^4a and R^4b, when bonded to the same carbon, are optionally taken together to form a group selected from the group consisting of oxo, thiono, and a linear spacer moiety having from 2 through 7 atoms connected to form a ring selected from the group consisting of a cycloalkyl ring having 3 through 8 members, a cycloalkenyl ring having 5 through 8 members, and a heterocyclyl ring having 5 through 8 members with the proviso that R^4a and R^4b taken together is other than oxo or thiono when the common carbon is directly bonded to the pyrazinone nitrogen;

E⁰ is E¹, when K is (CR^4aR^4b)_n, wherein E¹ is selected from the group consisting of a covalent single bond, O, S, C(O), C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁷), (R⁷)NC(O), C(S)N(R⁷), (R⁷)NC(S), OC(O)N(R⁷), (R⁷)NC(O)O, SC(S)N(R⁷), (R⁷)NC(S)S, SC(O)N(R⁷), (R⁷)NC(O)S, OC(S)N(R⁷), (R⁷)NC(S)O, N(R⁸)C(O)N(R⁷), (R⁷)NC(O)N(R⁸), N(R⁸)C(S)N(R⁷), (R⁷)NC(S)N(R₈), S(O), S(O)₂, S(O)₂N(R⁷), N(R⁷)S(O)₂, S(O)₂N(R⁷)C(O), C(O)N(R⁷)S(O)₂, Se, Se(O), Se(O)₂, Se(O)₂N(R⁷), N(R⁷)Se(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R⁷), N(R⁷), SiR²⁸R²⁹, CR^4a═CR^4b, ethynylidene (C═C; 1,2-ethynyl), and C═CR^4aR^4b;

K is optionally selected to be (CH(R¹⁴))_j-T wherein j is selected from a integer from 0 through 3 and T is selected from the group consisting of single covalent bond, O, S, and N(R⁷) with the provisos that R¹⁴ is other than hydroxy, cyano, halo, amino, alkylamino, dialkylamino, and sulfhydryl when j is 1 and that (CH(R¹⁴))_j is bonded to the pyrazinone ring;

E⁰ is optionally E², when K is (CH(R¹⁴))_j-T, wherein E² is selected from the group consisting of a covalent single bond, C(O), C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁷), (R⁷)NC(O), C(S)N(R⁷), (R⁷)NC(S), (R⁷)NC(O)O, (R⁷)NC(S)S, (R⁷)NC(O)S, (R⁷)NC(S)O, N(R⁸)C(O)N(R⁷), (R⁷)NC(O)N(R⁸), N(R⁸)C(S)N(R⁷), (R⁷)NC(S)N(R⁸), S(O), S(O)₂, S(O)₂N(R⁷), N(R⁷)S(O)₂, S(O)₂N(H)C(O), C(O)N(H)S(O)₂, Se(O), Se(O)₂, Se(O),N(R⁷), N(R⁷)Se(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), and N(R⁷);

K is optionally selected to be G-(CH(R¹⁵)_k wherein k is selected from an integer from 1 through 3 and G is selected from the group consisting of O, S, and N(R⁷) with the proviso that R¹⁵ is other than hydroxy, cyano, halo, amino, alkylamino, dialkylamino, and sulfhydryl when k is 1;

E⁰ is optionally E³ when K is G-(CH(R¹⁵))_k wherein E³ is selected from the group consisting of a covalent single bond, O, S, C(O), C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁷), (R⁷)NC(O), C(S)N(R⁷), (R⁷)NC(S), OC(O)N(R⁷), (R⁷)NC(O)O, SC(S)N(R⁷), (R⁷)NC(S)S, SC(O)N(R⁷), (R⁷)NC(O)S, OC(S)N(R⁷), (R⁷)NC(S)O, N(R⁸)C(O)N(R⁷), (R⁷)NC(O)N(R⁸), N(R⁸)C(S)N(R⁷), (R⁷)NC(S)N(R⁸), S(O), S(O)₂, S(O)₂N(R⁷), N(R⁷)S(O)₂, Se, Se(O), Se(O)₂, Se(O)₂N(R⁷), N(R⁷)Se(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R⁷) ON(R⁷), SiR²⁸R²⁹, CR^4a═CR^4b, ethynylidene (C═C; 1,2-ethynyl),and C═CR^4aR^4b;

Y⁰ is formula (IV): wherein D⁵, D⁶, J⁵, and J⁶ are independently selected from the group consisting of C, N, O, S and a covalent bond with the provisos that no more than one is a covalent bond, K² is independently selected from the group consisting of C and N⁺, no more than one of D⁵, D⁶, J⁵, and J⁶ is O, no more than one of D⁵, D⁶, J⁵, and J⁶ is S, one of D⁵, D⁶, J⁵, and J⁶ must be a covalent bond when two of D⁵, D⁶, J⁵, and J⁶ are O and S, no more than three of D⁵, D⁶, J⁵, and J⁶ are N when K² is N⁺, and no more than four of D⁵, D⁶, J⁵, and J⁶ are N when K² is carbon with the provisos that R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are each independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, and the divalent nature of oxygen and that D⁵, D⁶, J⁵, and J⁶ are selected to maintain an aromatic ring system;

R¹⁶ and R¹⁷ are independently optionally taken together to form a linear moiety spacer having from 3 through 6 atoms connected to form a ring selected from the group consisting of a cycloalkenyl ring having from 5 through 8 members, a partially saturated heterocyclyl ring having from 5 through 8 members, a heteroaryl having from 5 through 6 members, and an aryl;

R¹⁸ and R¹⁹ are independently optionally taken together to form a linear moiety spacer having from 3 through 6 atoms connected to form a ring selected from the group consisting of a cycloalkenyl ring having from 5 through 8 members, a partially saturated heterocyclyl ring having from 5 through 8 members, a heteroaryl having from 5 through 6 members, and an aryl;

Q^b is selected from the group consisting of NR²⁰R²¹, NR²⁰R²¹R²², oxy, alkyl, aminoalkyl, alkylamino, dialkylamino, dialkylsulfoniumalkyl, arylamino and hydrido, wherein R²⁰, R²¹, and R²² are independently selected from the group consisting of hydrido, amino, alkyl, hydroxy, alkoxy, aminoalkyl alkylamino, dialkylamino, and hydroxyalkyl with the provisos that no more than one of R²⁰, R²¹, and R²² is hydroxy, alkoxy, alkylamino, amino, and dialkylamino at the same time and that R²⁰, R²¹, and R²² must be other than be hydroxy, alkoxy, alkylamino, amino, and dialkylamino when K² is N⁺;

R²⁰ and R²¹, R²⁰ and R²², and R²¹ and R²² are independently optionally selected to form a spacer pair wherein a spacer pair is taken together to form a linear moiety having from 4 through 7 atoms connecting the points of bonding of said spacer pair members to form a heterocyclyl ring having 5 through 8 members with the proviso that no more than one of the group consisting of spacer pairs R²⁰ and R²¹, R²⁰ and R²², and R²¹ and R²² is used at the same time;

Q^b is optionally selected from the group consisting of N(R²⁶)SO₂N(R²³)(R²⁴), N(R²⁶)C(O)OR⁵, N(R²⁶)C(O)SR⁵, N(R²⁶)C(S)OR⁵ and N(R²⁶)C(S)SR⁵ with the proviso that no more than one of R²³, R²⁴, and R²⁶ can be hydroxy, alkoxy, aminoalkyl, alkylamino, amino, or dialkylamino when two of the group consisting of R²³, R²⁴, and R²⁶ are bonded to the same atom;

Q^b is optionally selected from the group consisting of dialkylsulfonium, trialkylphosphonium, C(NR²⁵)NR²³R²⁴, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), N(R²⁶)C(O)N(R²³)(R²⁴), N(R²⁶)C(S)N(R²³)(R²⁴), C(NR²⁵)OR⁵, C(O)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), C(S)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), N(R²⁶)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), ON(R²⁶)C(NR²⁵)N(R²³)(R²⁴), N(R²⁶)N(R²⁶)SO₂N(R²³)(R²⁴), C(NR²⁵)SR⁵, C(O)NR²³R²⁴, and C(O)NR²³R²⁴ with the provisos that no more than one of R²³, R²⁴, and R²⁶ can be hydroxy, alkoxy, alkylamino, amino, or dialkylamino when any two of the group consisting of R²³, R²⁴, and R²⁶ are bonded to the same atom and that said Q^b group is bonded directly to a carbon atom;

R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, alkyl, hydroxy, alkoxy, alkylenylamino, amino, alkylamino, dialkylamino, and hydroxyalkyl;

R²³ and R²⁴ are optionally taken together to form a linear spacer moiety having from 4 through 7 atoms connecting the points of bonding to form a heterocyclyl ring having 5 through 8 members;

R²³ and R²⁵, R²⁴ and R²⁵, R²⁵ and R²⁶, R²⁴ and R²⁶, and R²³ and R²⁶ are independently optionally selected to form a spacer pair wherein a spacer pair is taken together from the points of bonding of selected spacer pair members to form the group L-U-V wherein L, U, and V are independently selected from the group consisting of O, S, C(O), C(S), C(J_H)₂S(O), SO₂, OP(OR³¹)R³⁰, P(O)R³⁰, P(S)R³⁰, C(R³⁰)R³¹, C═C(R³⁰)R³¹, (O)₂POP(O)₂, R³⁰(O)POP(O)R³⁰, Si(R²⁹)R²⁸, Si(R²⁹)R²⁸Si(R²⁹)R²⁸, Si(R²⁹)R²⁸OSi(R²⁹)R²⁸, (R²⁸)R²⁹COC(R²⁸)R²⁹, (R²⁸)R²⁹CSC(R²⁸)R²⁹, C(O)C(R³⁰)═C(R³¹), C(S)C(R³⁰)═C(R³¹), S(O)C(R³⁰)═C(R³¹), SO₂C(R³⁰)═C(R³¹), PR³⁰C(R³⁰)═C(R³¹), P(O)R³⁰C(R³⁰)═C(R³¹), P(S)R³⁰C(R³⁰)═C(R³¹), DC(R³⁰)(R³¹)D, OP(OR³¹)R³⁰, P(O)R³⁰, P(S)R³⁰, Si(R²⁸)R²⁹ and N(R³⁰), and a covalent bond with the proviso that no more than any two of L, U and V are simultaneously covalent bonds and the heterocyclyl comprised of by L, U, and V has from 5 through 10 member;

D is selected from the group consisting of oxygen, C═O, C═S, S(O)_m wherein m is an integer selected from 0 through 2;

J_H is independently selected from the group consisting of OR²⁷, SR²⁷ and N(R²⁰)R²¹;

R²⁷ is selected from the group consisting of hydrido, alkyl, alkenyl, alkynyl, aralkyl, aryloxyalkyl, aralkoxyalkyl, alkylsulfinylalkyl, alkylsulfonylalkyl, aralkylthioalkyl, heteroaralkylthioalkyl, alkoxyalkyl, heteroaryloxyalkyl, alkenyloxyalkyl, alkylthioalkyl, arylthioalkyl, cycloalkyl, cycloalkylalkyl, cycloalkylalkenyl, cycloalkenyl, cycloalkenylalkyl, haloalkyl, haloalkenyl, halocycloalkyl, halocycloalkenyl, haloalkoxyalkyl, haloalkenyloxyalkyl, halocycloalkoxyalkyl, halocycloalkenyloxyalkyl, perhaloaryloxyalkyl, heteroaryl, heteroarylalkyl, heteroarylthioalkyl, heteroaralkylthioalkyl, arylsulfinylalkyl, arylsulfonylalkyl, cycloalkylsulfinylalkyl, cycloalkylsufonylalkyl, heteroarylsulfonylalkyl, heteroarylsulfinylalkyl, aralkylsulfinylalkyl and aralkylsulfonylalkyl;

R³⁰ and R³¹ are independently selected from the group consisting of hydrido, hydroxy, thiol, aryloxy, amino, alkylamino, dialkylamino, hydroxyalkyl, heteroaryloxyalkyl, alkoxy, alkylthio, arylthio, alkyl, alkenyl, alkynyl, aryl, aralkyl, aryloxyalkyl, aralkoxyalkyl, alkylsulfinylalkyl, alkylsulfonylalkyl, aralkylthioalkyl, heteroaralkoxythioalkyl, alkoxyalkyl, heteroaryloxyalkyl, alkenyloxyalkyl, alkylthioalkyl, arylthioalkyl, cycloalkyl, cycloalkylalkyl, cycloalkylalkenyl, cycloalkenyl, cycloalkenylalkyl, haloalkyl, haloalkenyl, haloaralkylsulfinylalkyl, aralkylsulfonylalkyl, cyanoalkyl, dicyanoalkyl, carboxamidoalkyl, dicarboxamidoalkyl, cyanocarboalkoxyalkyl, carboalkoxyalkyl, dicarboalkoxyalkyl, cyanocycloalkyl, dicyanocycloalkyl, carboxamidocycloalkyl, dicarboxamidocycloalkyl, carboalkoxycyanocycloalkyl, carboalkoxycycloalkyl, dicarboalkoxycycloalkyl, formylalkyl, acylalkyl, dialkoxyphosphonoalkyl, diaralkoxyphosphonoalkyl, phosphonoalkyl, dialkoxyphosphonoalkoxy, diaralkoxyphosphonoalkoxy, phosphonoalkoxy, dialkoxyphosphonoalkylamino, diaralkoxyphosphonoalkylamino, phosphonoalkylamino, dialkoxyphosphonoalkyl, diaralkoxyphosphonoalkyl, sulfonylalkyl, alkoxysulfonylalkyl, aralkoxysulfonylalkyl, alkoxysulfonylalkoxy, aralkoxysulfonylalkoxy, sulfonylalkoxy, alkoxysulfonylalkylamino, aralkoxysulfonylalkylamino, and sulfonylalkylamino;

R³⁰ and R³¹ are optionally taken to form a linear moiety spacer group having from 2 through 7 atoms to form a ring selected from the group consisting of a cycloalkyl ring having from 3 through 8 members, a cycloalkenyl ring having from 3 through 8 members, and a heterocyclyl ring having from 3 through 8 members:

R²³ and R²⁵, R²⁴ and R²⁵, R²⁵ and R²⁶, R²⁴ and R²⁶, and R²³ and R²⁶ are independently optionally selected to form a spacer pair wherein a spacer pair is taken together from the points of bonding of selected spacer pair members to form the group L-U-V wherein L, U, and V are independently selected from the group of 1,2-disubstituted radicals consisting of a cycloalkyl radical, a cycloalkenyl radical wherein cycloalkyl and cycloalkenyl radicals are substituted with one or more groups selected from R³⁰ and R³¹, an aryl radical, an heteroaryl radical, a saturated heterocyclic radical and a partially saturated heterocyclic radical wherein said 1,2-substituents are independently selected from C═O, C═S, C(R²⁸)R³², S(O), S(O)₂,OP(OR³¹)R³⁰, P(O)R³⁰, P(S)R³⁰ and Si(R²⁸)R²⁹;

R²³ and R²⁵, R²⁴ and R²⁵, R²⁵ and R²⁶, R²⁴ and R²⁶, and R²³ and R²⁶ are independently optionally selected to form a spacer pair wherein a spacer pair is taken together from the points of bonding of selected spacer pair members to form the group L-U-V wherein L, U, and V are independently selected from the group of radicals consisting of 1,2-disubstituted alkylene radicals and 1,2-disubstituted alkenylene radical wherein said 1,2-substitutents are independently selected from C═O, C═S, C(R²⁸)R²⁹, S(O), S(O)₂, OP(OR³¹)R³⁰, P(O)R³⁰, P(S)R³⁰, and Si(R²⁸)R²⁹ and said alkylene and alkenylene radical are substituted with one or more R³⁰ or R³¹ substituents;

Q^s is selected from the group consisting of a single covalent bond, (CR³⁷R³⁸)_b—(W⁰)_az wherein az is an integer selected from 0 through 1, b is an integer selected from 1 through 4, and W⁰ is selected from the group consisting of O, S, C(O), C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R¹⁴), (R¹⁴)NC(O), C(S)N(R¹⁴), (R¹⁴)NC(S), OC(O)N(R¹⁴), SC(S)N(R¹⁴), SC(O)N(R¹⁴), OC(S)N(R¹⁴), N(R¹⁵)C(O)N(R¹⁴), (R¹⁴)NC(O)N(R¹⁵), N(R¹⁵)C(S)N(R¹⁴), (R¹⁴)NC(S)N(R¹⁵), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, Se, Se(O), Se(O)₂, Se(O)₂N(R¹⁷), N(R¹⁴)Se(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R¹⁴), ON(R¹⁴), and SiR²⁸R²⁹, (CH(R¹⁴))_c—W¹—(CH(R¹⁵))_d wherein c and d are integers independently selected from 1 through 4, and W¹ is selected from the group consisting of O, S, C(O), C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R¹⁴), (R¹⁴)NC(O), C(S)N(R¹⁴), (R¹⁴)NC(S), OC(O)N(R¹⁴), (R¹⁴)NC(O)O, SC(S)N(R¹⁴), (R¹⁴)NC(S)S, SC(O)N(R¹⁴), (R¹⁴)NC(O)S, OC(S)N(R¹⁴), (R¹⁴)NC(S)O, N(R¹⁵)C(O)N(R¹⁴), (R¹⁴)NC(O)N(R¹⁵), N(R¹⁵)C(S)N(R¹⁴), (R¹⁴)NC(S)N(R¹⁴), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, Se, Se(O), Se(O)₂, Se(O)₂N(R¹⁴), N(R¹⁴)Se(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R¹⁴), ON(R¹⁴), SiR²⁸R²⁹, and (CH(R¹⁴))_e—W²²—(CH(R¹⁵))_h wherein e and h are integers independently selected from 0 through 2 and W²² is selected from the group consisting of CR⁴¹═CR⁴², CR⁴¹R⁴²═C; vinylidene), ethynylidene (C═C; 1,2-ethynyl), 1.2-cyclopropyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, and 3,4-tetrahydrofuranyl, with the provisos that R¹⁴ and R¹⁵ are selected from other than halo and cyano when directly bonded to N and that (CR³⁷R³⁸)_b, (CH(R¹⁴))_c. (CH(R¹⁴))_e and are bonded to E⁰;

R³⁷ and R³⁷, when bonded to different carbons, are optionally taken together to form a linear moiety spacer having from 1 through 7 atoms to form a ring selected from the group consisting of a cycloalkyl ring having from 3 through 8 members, a cycloalkenyl ring having from 3 through 8 members, and a heterocyclyl ring having from 3 through 8 members;

R³⁷ and R³⁸, when bonded to different carbons, are taken together to form a linear moiety spacer having from 1 through 7 atoms to form a ring selected from the group consisting of a cycloalkyl ring having from 3 through 8 members, a cycloalkenyl ring having from 3 through 8 members, and a heterocyclyl ring having from 3 through 8 members;

R³⁸ and R³⁸, when bonded to different carbons, are taken together to form a linear moiety spacer having from 1 through 7 atoms to form a ring selected from the group consisting of a cycloalkyl ring having from 3 through 8 members, a cycloalkenyl ring having from 3 through 8 members, and a heterocyclyl ring having from 3 through 8 members;

R³⁷ and R³⁸, when bonded to the same carbon, are taken together to form a group selected from a group consisting of oxo, thiono, alkylene, haloalkylene, and a linear moiety spacer having from 2 through 7 atoms to form a ring selected from the group consisting of a cycloalkyl ring having from 3 through 8 members, a cycloalkenyl ring having from 3 through 8 members, and a heterocyclyl ring having from 3 through 8 members;

Y⁰ is optionally Y wherein Q^b-Q^s;

Y⁰ is optionally Q^b-Q^ss wherein Q^ss is selected from the group consisting of (CR³⁷R³⁸)_f wherein f is an integer selected from 1 through 6, (CH(R¹⁴))_c—W¹—(CH(R¹⁵))_d wherein c and d are integers independently selected from 1 through 4, and W¹ is selected from the group consisting of W¹ is selected from the group consisting of O, S, C(O), C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R¹⁴), (R¹⁴)NC(O), C(S)N(R¹⁴), (R¹⁴)NC(S), OC(O)N(R¹⁴), (R¹⁴)NC(O)O, SC(S)N(R¹⁴), (R¹⁴)NC(S)S, SC(O)N(R¹⁴), (R¹⁴)NC(O)S, OC(S)N(R¹⁴), (R¹⁴)NC(S)O, N(R¹⁴)C(O)N(R¹⁴), (R¹⁴)NC(O)N(R¹⁵), N(R¹⁵)C(S)N(R¹⁴), (R¹⁴)NC(S)N(R¹⁵), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, Se, Se(O), Se(O)₂, Se(O)₂N(R¹⁴), N(R¹⁴)Se(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R¹⁴), ON(R¹⁴), Si²⁸R²⁹, and (CH(R¹⁴))_e—W²—(CH(R¹⁵))_h wherein e and h are integers independently selected from 0 through 2 and W² is selected from the group consisting of CR^4a═CR^4b, ethynylidene (C═C; 1,2-ethynyl), and C═CR^4aR^4b with the provisos that R¹⁴ and R¹⁵ are selected from other than halo and cyano when directly bonded to N, that (CR³⁷R³⁸)_f, (CH(R¹⁵))_c, and (CH(R¹⁵))_e are bonded to E⁰, and Q^b is selected from other than N(R²⁶)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴) or ON(R²⁶)C(NR²⁵)N(R²³)(R²⁴) when Q^ss is (CR³⁷R³⁸)_f wherein f is other than the integer 1;

Y⁰ is optionally Q^b-Q^sss wherein Q^sss is (CH(R³⁸))_r—W³, r is an integer selected from 1 through 3, W³ is selected from the group consisting of 1,1-cyclopropyl, 1,2-cyclopropyl, 1,1-cyclobutyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,4-cyclohexyl, 1,2-cyclopentyl, 1 ,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,5-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 1,4-piperazinyl, 2,3-piperazinyl, 2,5-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 1,4-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,5-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 3,5-piperidinyl, 3,6-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2H-2,3-pyranyl, 2H-2,4-pyranyl, 2H-2,5-pyranyl, 4H-2,3-pyranyl, 4H-2,4-pyranyl, 4H-2,5-pyranyl, 2H-pyran-2-one-3,4-yl, 2H-pyran-2-one-4,5-yl, 4H-pyran-4-one-2,3-yl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, 3,4-tetrahydrofuranyl, 2,3-tetrahydropyranyl, 2,4-tetrahydropyranyl, 2,5-tetrahydropyranyl, 2,6-tetrahydropyranyl, 3,4-tetrahydropyranyl, and 3,5-tetrahydropyranyl, and each carbon and hyrido containing nitrogen member of the ring of the W³ other than the points of attachment is optionally substituted with one or more of the group consisting of

R⁹, R¹⁰, R¹¹, and R¹², with the proviso that (CH(R³⁸))_r is bonded to E⁰ and Q^b is bonded to lowest numbered substituent position of each W³;

Y⁰ is optionally Q^b-Q^sssr Q wherein Q^sssr is (CH(R³⁸))_r—W⁴, r is an integer selected from 1 through 3, W⁴ is selected from the group consisting of 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,4-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,5-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 1,4-piperazinyl, 2,3-piperazinyl, 2,5-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-pipendinyl, 1,4-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,5-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 3,5-piperidinyl, 3,6-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2H-2,3-pyranyl, 2H-2,4-pyranyl, 2H-2,5-pyranyl, 4H-2,3-pyranyl, 4H-2,4-pyranyl, 4H-2,5-pyranyl, 2H-pyran-2-one-3,4-yl, 2H-pyran-2-one-4,5-yl, 4H-pyran-one-2,3-yl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, 3,4-tetrahydrofuranyl, 2,3-tetrahydropyranyl, 2,4-tetrahydropyranyl, 2,5-tetrahydropyranyl, 2,6-tetrahydropyranyl, 3,4-tetrahydropyranyl, and 3,5-tetrahydropyranyl, and each carbon and hydrido containing nitrogen member of the ring of the W⁴ other than the points of attachment is optionally substituted with one or more of the group consisting of R⁹, R¹⁰, R¹¹, and R¹², with the provisos that (CH(R³⁸))_r is bonded to E⁰ and Q^b is bonded to highest number substituent position of each W⁴;

Y⁰ is optionally Q^b-Q^ssss wherein Q^ssss is (CH(R³⁸))_r—W⁵, r is an integer selected from 1 through 3, W⁵ is selected from the group consisting of 1,4-indenyl, 1,5-indenyl, 1,6-indenyl, 1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl, 2,4-indenyl, 3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl, 2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl, 2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl, 3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl, 2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl, 3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl, 3,7-benzothiophenyl, 2,4-imidazo(1,2-a)pyridinyl, 2,5-imidazo(1,2-a)pyridinyl, 2,6-imidazo(1,2-a)pyridinyl, 2,7-imidazo(1,2-a)pyridinyl, 3,4-imidazo(1,2-a)pyridinyl, 3,5-imidazo(1,2-a)pyridinyl, 3,6-imidazo(1,2-a)pyridinyl, 3,7-imidazo(1,2-a)pyridinyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl, 2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl, 1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl, 2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl, 3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl, 2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl, 2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,5-benzisoxazolyl, 3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl, 1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl, 2,4naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl, 2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2,6-quinolinyl, 2,7-quinolinyl, 2,8-quinolinyl, 3,4-quinolinyl, 3,5-quinolinyl, 3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4,5-quinolinyl, 4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl, 1,4-isoquinolinyl, 1,5-isoquinolinyl, 1,6-isoquinolinyl, 1,7-isoquinolinyl, 1,8-isoquinolinyl, 3,4-isoquinolinyl, 3,5-isoquinolinyl, 3,6-isoquinolinyl, 3,7-isoquinolinyl, 3,8-isoquinolinyl, 4,5-isoquinolinyl, 4,6-isoquinolinyl, 4,7-isoquinolinyl, 4,8-isoquinolinyl, 3,4-cinnolinyl, 3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl, 4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and 4,8-cinnolinyl, and each carbon and hydrido containing nitrogen member of the ring of the W⁵ other than the points of attachment is optionally substituted with one or more of the group consisting of R⁹, R¹⁰, R¹¹, and R¹², with the proviso that Q^b is bonded to lowest number substituent position of each W⁵ and that (CH(R³⁸))_r is bonded to E⁰;

Y⁰ is optionally Q^b-Q^ssssr wherein Q^ssssr is (CH(R³⁸))_r—W⁶, r is an integer selected from 1 through 3, W⁶ is selected from the group consisting of 1,4-indenyl, 1,5-indenyl, 1,6-indenyl, 1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl, 2,4-indenyl, 3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl, 2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl, 2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl, 3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl, 2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl, 3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl, 3,7-benzothiophenyl, 2,4-imidazo(1,2-a)pyridinyl, 2,5-imidazo(1,2-a)pyridinyl, 2,6-imidazo(1,2-a)pyridinyl, 2,7-imidazo(1,2-a)pyridinyl, 3,4-imidazo(1,2-a)pyridinyl, 3,5-imidazo(1,2-a)pyridinyl, 3,6,-imidazo(1,2-a)pyridinyl, 3,7-imidazo(1,2-a)pyridinyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl, 2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl, 1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl, 2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl, 3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl, 2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl, 2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,>benzisoxazolyl, 3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl, 1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl, 2,4-naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl, 2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2,6-quinolinyl, 2,7-quinolinyl, 2,8-quinolinyl, 3,4-quinolinyl, 3,5-quinolinyl, 3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4,5-quinolinyl, 4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl, 1,4-isoquinolinyl, 1,5-isoquinolinyl, 1,6-isoquinolinyl, 1,7-isoquinolinyl, 1,8-isoquinolinyl, 3,4-isoquinolinyl, 3,5-isoquinolinyl, 3,6-isoquinolinyl, 3,7-isoquinolinyl, 3,8-isoquinolinyl, 4,5-isoquinolinyl, 4,6-isoquinolinyl, 4,7-isoquinolinyl, 4,8-isoquinolinyl, 3,4-cinnolinyl, 3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl, 4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and 4,8-cinnolinyl, and each carbon and hydrido containing nitrogen member of the ring of the W⁶ other than the points of attachment is optionally substituted with one or more of the group consisting of R⁹, R¹⁰, R¹¹, and R¹² with the proviso that Q^b is bonded to highest number substituent position of each W⁶ and that (CH(R³⁸))_r s bonded to E⁰.

In an embodiment of a compound of Formula I or a pharmaceutically acceptable salt thereof,

J is selected from the group consisting of O and S,

J is optionally selected from the group consisting of CH—R⁶ and N—R⁶ wherein R⁶ is a linear spacer moiety having a chain length of 1 to 4 atoms linked to the point of bonding of a substituent selected from the group consisting of R^4a, R^4b, R³⁹, R⁴⁰, R⁵, R¹⁴, and R¹⁵ to form a heterocyclyl ring having 5 through 8 members;

B is formula (V): wherein D¹, D², J¹, J² and K¹ are independently selected from the group consisting of C, N, O, S and a covalent bond with the provisos that no more than one is a covalent bond, no more than one of D⁴, D², J¹, J² and K¹ is O, no more than one of D⁴, D², J¹, J² and K¹ is S, one of D¹, D², J¹, J² and K¹ must be a covalent bond when two of D¹, D², J¹, J² and K¹ are O and S, and no more than four of D¹, D², J¹, J² and K¹ are N, with the provisos that D¹, D², J¹, J² and K¹ are selected to maintain an aromatic ring system and that R³², R³³, R³⁴, R³⁵, and R³⁶ are each independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, and the divalent nature of oxygen;

R¹⁰, R¹⁰, R¹¹, R¹², R¹³, R¹⁶, R¹⁷, R¹⁸, R¹⁹, R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of heterocyclylalkoxy, N-alkyl-N-arylamino, heterocyclylamino, heterocyclylalkylamino, hydrido, acetamido, haloacetamido, amidino, guanidino, dialkylsulfonium, trialkylphosphonium, dialkylsulfoniumalkyl, carboxy, heteroaralkylthio, haloalkylthio, alkanoyloxy, alkoxy, alkoxyalkyl, haloalkoxylalkyl, heteroaralkoxy, cycloalkylamino, acylalkyl, acylalkoxy, aryloylalkoxy, heterocyclyloxy, aralkylaryl, aralkyl, aralkenyl, aralkynyl, heterocyclyl, perhaloaralkyl, aralkylsulfonyl, aralkylsulfonylalkyl, aralkylsulfinyl, aralkylsulfinylalkyl, halocycloalkyl, halocycloalkenyl, cycloalkylsulfinyl, cycloalkylsulfinylalkyl, cycloalkylsulfonyl, cycloalkylsulfonylalkyl, heteroarylamino, N-heteroarylamino-N-alkylamino, heteroaralkylamino, cycloalkoxy, cycloalkenyloxy, cycloalkoxyalkyl, cycloalkylalkoxy, cycloalkenyloxyalkyl, cycloalkylenedioxy, halocycloalkoxy, halocycloalkoxyalkyl, halocycloalkenyloxy, halocycloalkenyloxyalkyl, hydroxy, amino, alkoxyamino, thio, nitro, alkylamino, alkylthio, alkylthioalkyl, arylamino, aralkylamino, arylthio, arylthioalkyl, heteroaralkoxyalkyl, alkylsulfinyl, alkylsulfinylalkyl, arylsulfinylalkyl, arylsulfonylalkyl, heteroarylsulfinylalkyl, heteroarylsulfonylalkyl, alkylsulfonyl, alkylsulfonylalkyl, haloalkylsulfinylalkyl, haloalkylsulfonylalkyl, alkylsulfonamido, alkylaminosulfonyl, amidosulfonyl, monoalkyl amidosulfonyl, dialkyl amidosulfonyl, monoarylamidosulfonyl, arylsulfonamido, diarylamidosulfonyl, monoalkyl monoaryl amidosulfonyl, arylsulflnyl, arylsulfonyl, heteroarylthio, heteroarylsulfinyl, heteroarylsulfonyl, heterocyclylsulfonyl, heterocyclylthio, alkanoyl, alkenoyl, aroyl, heteroaroyl, aralkanoyl, heteroaralkanoyl, haloalkanoyl, alkyl, alkenyl, alkynyl, alkenyloxy, alkenyloxyalky, alkylenedioxy, haloalkylenedioxy, cycloalkyl, cycloalkylalkanoyl, cycloalkenyl, cycloalkylalkyl, cycloalkenylalkyl, halo, haloalkyl, haloalkenyl, haloalkoxy, hydroxyhaloalkyl, hydroxyaralkyl, hydroxyalkyl, alkylenylamino, hydoxyheteroaralkyl, haloalkoxyalkyl, aryl, aralkyl, aryloxy, aralkoxy, aryloxyalkyl, saturated heterocyclyl, partially saturated heterocyclyl, heteroaryl, heteroaryloxy, heteroaryloxyalkyl, heteroarylalkyl, arylalkenyl, heteroarylalkenyl, carboxyalkyl, carboalkoxy, alkoxycarboxamido, alkylamidocarbonylamido, arylamidocarbonylamido. carboalkoxyalkyl, carboalkoxyalkenyl, carboxy, carboaralkoxy, carboxamido, carboxamidoalkyl, cyano, carbohaloalkoxy, phosphono, phosphonoalkyl, diaralkoxyphosphono, and diaralkoxyphosphonoalkyl;

R¹⁶, R¹⁹, R³², R³³, R³⁴, R³⁵, and R³⁶ are independently optionally Q⁶;

R³² and R³³, R³³ and R³⁴, R³⁴ and R³⁵, and R³⁵ and R³⁶ are independently optionally selected to form a spacer pair wherein a spacer pair is taken together to form a linear moiety having from 3 through 6 atoms connecting the points of bonding of said spacer pair members to form a ring selected from the group consisting of a cycloalkenyl ring having 5 through 8 members, a partially saturated heterocyclyl ring having 5 through 8 members, a heteroaryl ring having 5 through 6 members, and an aryl with the proviso that no more than one of the group consisting of spacer pairs R³² and R³³, R³³ and R³⁴, R³⁴ and R³⁵, and R³⁵ and R³⁶ can be used at the same time;

R⁹ and R¹⁰, R¹⁰ and R¹¹, R¹¹ and R¹², and R¹² and R¹³ are independently optionally selected to form a spacer pair wherein a spacer pair is taken together to form a linear moiety having from 3 through 6 atoms connecting the points of bonding of said spacer pair members to form a ring selected from the group consisting of a cycloalkenyl ring having 5 through 8 members, a partially saturated heterocyclyl ring having 5 through 8 members, a heteroaryl ring having 5 through 6 members, and an aryl with the proviso that no more than one of the group consisting of spacer pairs R⁹ and R¹⁰, R¹⁰ and R¹¹, R¹¹ and R¹², and R¹² and R¹³ can be used at the same time;

B is optionally selected from the group consisting of hydrido, trialkylsilyl, C2-C8 alkyl, C3-C8 alkylenyl, C3-C8 alkenyl, C3-C8 alkynyl, C2-C8 haloalkyl, and C3-C8 haloalkenyl wherein each member of group B may be optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶; B is optionally selected from the group consisting of C3-C15 cycloalkyl, C5-C10 cycloalkenyl, C4-C12 saturated heterocyclyl, and C4-C9 partially saturated heterocyclyl, wherein each ring carbon is optionally substituted with R³³, a ring carbon other than the ring carbon at the point of attachment of B to A is optionally substituted with oxo provided that no more than one ring carbon is substituted by oxo at the same time, ring carbon and nitrogen atoms adjacent to the carbon atom at the point of attachment is optionally substituted with R⁹ or R¹³, a ring carbon or nitrogen atom adjacent to the R⁹ position and two atoms from the point of attachment is optionally substituted with R¹⁰, a ring carbon or nitrogen atom adjacent to the R¹³ position and two atoms from the point of attachment is optionally substituted with R¹², a ring carbon or nitrogen atom three atoms from the point of attachment and adjacent to the R¹⁰ position is optionally substituted with R¹¹, a ring carbon or nitrogen atom three atoms from the point of attachment and adjacent to the R¹² position is optionally substituted with R³³, and a ring carbon or nitrogen atom four atoms from the point of attachment and adjacent to the R¹¹ and R³³ positions is optionally substituted with R³⁴;

A is selected from the group consisting of single covalent bond, (W⁷)_rr—(CH(R¹⁵))_pa and (CH(R¹⁵))_pa—(W⁷)_rr wherein rr is an integer selected from 0 through 1, pa is an integer selected from 0 through 6, and W⁷ is selected from the group consisting of O, S, C(O), C(S), C(O)S, C(S)O, C(O)N(R⁷), C(S)N(R⁷), (R⁷)NC(O), (R⁷)NC(S), S(O), S(O)₂, S(O)₂N(R⁷), (R⁷)NS(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁸), C(NR⁷)N(R⁷), (R⁷)NC(NR⁷), (R⁷)NC(NR⁷)⁷NR , and N(R⁷) with the proviso that no more than one of the group consisting of rr and pa can be 0 at the same time;

R⁷ and R⁸ are independently selected from the group consisting of hydrido, hydroxy, alkyl, acyl, aroyl, heteroaroyl, and alkoxyalkyl;

R¹⁴, R¹⁵, R³⁷, and R³⁸ are independently selected from the group consisting of hydrido, hydroxy, halo, cyano, hydroxyalkyl, alkoxy, alkyl, alkoxyalkyl, cycloalkyl, cycloalkylalkyl, cycloalkenyl, cycloalkenylalkyl, haloalkyl, haloalkenyl, haloalkoxy, haloalkoxyalkyl, haloalkenyloxyalkyl, halocycloalkoxy, halocycloalkoxyalkyl, halocycloalkenyloxyalkyl, carboxy, carboxyalkyl, carboalkoxy, carboxamido, and carboxamidoalkyl, wherein R³⁸ is optionally substituted at from one through three of the ring carbons with a substituent selected from the group consisting of R¹⁶, R¹⁷, R¹⁸, and R¹⁹;

R¹⁴ and R³⁸ can be independently selected from the group consisting of acyl, aroyl, and heteroaroyl with the proviso that acyl is selected from other than formyl and 2-oxoacyl and R³⁸ is optionally substituted at from one through three of the ring carbons with a substituent selected from the group consisting of R¹⁶, R¹⁷, R¹⁸, and R¹⁹;

Ψ is selected from the group consisting of NR⁵, O, C(O), C(S), S, S(O), S(O)₂, ON(R⁵), P(O)(R⁸), and CR³⁹R⁴⁰;

R⁵ is selected from the group consisting of hydrido, hydroxy, amino, alkyl, alkoxy, alkoxyalkyl, haloalkyl, acyl, aroyl, and heteroaroyl;

R³⁹ and R⁴⁰ are independently selected from the group consisting of hydrido, hydroxy, halo, cyano, hydroxyalkyl, acyl, aroyl, heteroaroyl, acylamido, alkoxy, alkyl, alkoxyalkyl, haloalkyl, haloalkoxy, haloalkoxyalkyl, alkylsulfonyl, haloalkylsulfonyl, carboxy, carboxyalkyl, carboalkoxy, carboxamido, and carboxamidoalkyl;

R² and R¹ are independently selected from the group consisting of Z⁰-Q, hydrido, alkyl, alkenyl, and halo with the provisos that R² is selected from other than the group consisting of hydrido, alkyl, cycloalkyl, and trifluoromethyl and R¹ is selected from other than the group consisting of hydrido and halo unless E¹ is other than C(O).NH, or unless E⁰ is selected from the group consisting of E² and E³, or unless K is other than (CR^4aR^4b)_n wherein n is 1 unless one of R^4a and R^4b are independently selected from other than hydrido, or unless Ψ is selected from other than NR⁵, or unless R⁵ is selected from other than hydrido, or unless Y⁰ is selected from other than wherein Q^s is C_1-4 alkyl, C_3-4 alkenyl or C_3-4 alkynyl where the C_1-4 alkyl, C_3-4 alkenyl or C_3-4 alkynyl group is bonded concurrently to E¹ wherein E¹ is C(O)NH and to the 4-position of an imidazole, the 4-position of a thiazole or the 5-position of a thiazole, or unless a spacer pair is present selected from the group of spacer pairs consisting of R² and R^4a, R² and R^4b, R² together with both R^4a and R^4b, R² and R¹⁴, R² and R¹⁵, and R⁶ with another group selected from the group consisting of R^4a, R^4b, R^4a and R^4b together, R³⁹, R⁴⁰, R³⁹ and R⁴⁰ together, R¹⁴, R¹⁵, and R⁵,that R² is selected from other than the group consisting of hydroxymethyl, methyl, methoxymethyl, methylthiomethyl, phenylthiomethyl, methylsulfinyl, methylthio, alkoxy, cycloalkoxy, alkylthio, alkylsulfinyl, alkysulfonyl, cycloalkylthio, cycloalkylsulfinyl, and cycloalkysulfonyl, when Y^o is other than phenyl, mono-substituted phenyl, and di-substituted phenyl 5-(2-amino)pyridindyl, or 4-(2-amino)pyridindyl, and that R² is selected from other than the group consisting of hydrido, halo, alkyl, cycloalkyl when Y^o is methyleneimidazo(1,2-a)pyridinyl, 4,5-benzimidazol-5-yl, or indol-5-yl unless R¹ is selected from other than the group consisting of hydrido or halo, or unless E¹ is other than C(O)NH, or unless E⁰ is selected from the group consisting of E² and E³, or unless K is other than (CR^4aR^4b)_n wherein n is 1 unless one of R^4a and R^4b are independently selected from other than hydrido, or unless Ψ is selected from other than NR⁵ wherein R⁵ is hydrido;

R¹ is optionally selected from the group consisting of amino, aminoalkyl, alkylamino, amidino, guanidino, hydroxy, hydroxyamino, alkoxy, hydroxyalkyl, alkoxyamino, thiol, alkylthio, dialkylsulfonium, trialkylphosphonium, dialkylsulfoniumalkyl, heteroarylamino, nitro, arylamino, aralkylamino, alkanoyl, alkenoyl, aroyl, heteroaroyl, aralkanoyl, heteroaralkanoyl, haloalkanoyl, hydroxyhaloalkyl, cyano, and phosphono;

Z⁰ is selected from the group consisting of covalent single bond, (CR⁴¹R⁴²)_q wherein q is an integer selected from 1 through 6, (CH(R⁴¹))_g—W⁰—(CH(R⁴²))_p wherein g and p are integers independently selected from 0 through 3 and W⁰ is selected from the group consisting of O, S, C(O), C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁴¹), (R⁴¹)NC(O), C(S)N(R⁴¹), (R⁴¹)NC(S), OC(O)N(R⁴¹), (R⁴¹)NC(O)O, SC(S)N(R⁴¹), (R⁴¹)NC(S)S, SC(O)N(R⁴¹), (R⁴¹)NC(O)S, OC(S)N(R⁴¹), (R⁴¹)NC(S)O, N(R⁴²)C(O)N(R⁴¹), (R⁴¹)NC(O)N(R⁴²), N(R⁴²)C(S)N(R⁴¹), (R⁴¹)NC(S)N(R⁴²), S(O),S(O)₂, S(O)₂N(R⁴¹), N(R⁴¹)S(O)₂, Se, Se(O), Se(O)₂, Se(O)₂N(R⁴¹), N(R⁴¹)Se(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R⁴¹), ON(R⁴¹), and SiR²⁸R²⁹, and (CH(R⁴¹))_e—W²²—(CH(R⁴²))_h wherein e and h are integers independently selected from 0 through 2 and W²² is selected from the group consisting of CR⁴¹═CR⁴², CR⁴¹R⁴¹═C; vinylidene), ethynylidene (C═C; 1,2-ethynyl), 1,2-cyclopropyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, and 3,4-tetrahydrofuranyl, with the provisos that R⁴¹ and R⁴² are selected from other than halo and cyano when directly bonded to N, Z⁰ is directly bonded to the pyrazinone ring, and W²² is optionally substituted with one or more substituents selected from the group consisting of R⁹, R¹⁰, R¹¹, R¹², and R¹³;

R⁴¹ and R⁴² are independently selected from the group consisting of amidino, hydroxyamino, hydrido, hydroxy, amino, halo, cyano, aryloxy, hydroxyalkyl, acyl, aroyl, heteroaroyl, heteroaryloxyalkyl, alkoxy, alkyl, aryl, aralkyl, aryloxyalkyl, aralkoxyalkylalkoxy, alkoxyalkyl, heteroaryloxyalkyl, cycloalkyl, cycloalkylalkyl, cycloalkylalkenyl, cycloalkenyl, cycloalkenylalkyl, haloalkyl, haloalkenyl, halocycloalkyl, halocycloalkenyl, haloalkoxy, haloalkoxyalkyl, haloalkenyloxyalkyl, halocycloalkoxy, halocycloalkoxyalkyl, halocycloalkenyloxyalkyl, saturated heterocyclyl, partially saturated heterocyclyl, heteroaryl, heteroaralkyl, heteroarylthioalkyl, heteroaralkylthioalkyl, alkylsulfonyl, haloalkylsulfonyl, arylsulfonyl, arylsulfonylalkyl, aralkylsulfonyl, cycloalkylsulfonyl, cycloalkylsufonylalkyl, heteroarylsulfonylalkyl, heteroarylsulfonyl, and aralkylsulfonylalkyl;

Q is formula (II): wherein D¹, D², J¹, J² and K¹ are independently selected from the group consisting of C, N, O, S and a covalent bond with the provisos that no more than one is a covalent bond, no more than one of D¹, D², J¹, J² and K¹ is O, no more than one of D¹, D², J¹, J² and K¹ is S, one of D¹, D², J¹, J² and K¹ must be a covalent bond when two of D¹, D², J¹, J² and K¹ are O and S; and no more than four of D¹, D², J¹, J² and K¹ are N, with the proviso that R⁹, R¹⁰, R¹¹, R¹², and R¹³ are each independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, and the divalent nature of oxygen and that D¹, D², J¹, J² and K¹ are selected to maintain an aromatic ring system;

Q is optionally selected from formula (III): wherein D³, D⁴, J³, and J⁴ are independently selected from the group consisting of C, N, O and S, no more than one of D³, D⁴, J³, and J⁴ is O, no more than one of D³, D⁴, J³, and J⁴ is S, and no more than three of D¹, D², J¹, and J² are N, with the provisos that R⁹, R¹⁰, R¹¹, and R¹² are each independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, and the divalent nature of oxygen and that D³, D⁴, J³, and J⁴ are selected to maintain an aromatic ring system;

Q is optionally selected from the group consisting of hydrido, alkyl, alkoxy, alkylamino, alkylthio, haloalkylthio, alkenyl, alkynyl, saturated heterocyclyl, partially saturated heterocyclyl, acyl, aroyl, heteroaroyl, cycloalkyl, cycloalkylalkyl, cycloalkenyl, cycloalkenylalkyl, cycloalkylalkenyl, haloalkyl, haloalkoxy, haloalkenyl, halocycloalkyl, halocycloalkenyl, haloalkoxyalkyl, haloalkenyloxyalkyl, halocycloalkoxyalkyl, and halocycloalkenyloxyalkyl with the proviso that Z⁰ is selected from other than a single covalent bond when Q is hydrido;

K is (CR^4aR^4b)_n wherein n is an integer selected from 1 through 2;

R^4a and R^4b are independently selected from the group consisting of halo, hydrido, hydroxy, cyano, hydroxyalkyl, alkyl, alkenyl, alkoxyalkyl, aralkyl, heteroaralkyl, alkylthioalkyl, haloalkyl, haloalkenyl, and cyanoalkyl;

E⁰ is E¹, when K is (CR^4aR^4b)_n, wherein E¹ is selected from the group consisting of a covalent single bond, O, S, C(O), C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁷), (R⁷)NC(O), C(S)N(R⁷), (R⁷)NC(S), OC(O)N(R⁷), (R⁷)NC(O)O, SC(S)N(R⁷), (R⁷)NC(S)S, SC(O)N(R⁷), (R⁷)NC(O)S, OC(S)N(R⁷), (R⁷)NC(S)O, N(R⁸)C(O)N(R⁷), (R⁷)NC(O)N(R⁸), N(R⁸)C(S)N(R⁷), (R⁷)NC(S)N(R⁸), S(O), S(O)₂, S(O)₂N(R⁷),N(R⁷)S(O)₂, S(O)₂N(R⁷)C(O), C(O)N(R⁷)S(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R⁷), ON(R⁷) CR^4a═CR^4b, ethynylidene (C═C; 1,2-ethynyl), and C═CR^4aR^4b;

K is optionally (CH(R¹⁴))_j-T wherein j is selected from a integer from 0 through 2 and T is selected from the group consisting of single covalent bond, O, S, and N(R⁷) with the proviso that (CH(R¹⁴))_j is bonded to the pyrazinone ring;

E⁰ is optionally E², when K is (CH(R¹⁴))_j-T, wherein E² is selected from the group consisting of a covalent single bond, C(O), C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁷), (R⁷)NC(O), C(S)N(R⁷), (R⁷)NC(S), (R⁷)NC(O)O, (R⁷)NC(S)S, (R⁷)NC(O)S, (R⁷)NC(S)O, N(R⁷)C(O)N(R⁷), (R⁷)NC(O)N(R⁸), N(R⁸)C(S)N(R⁷), (R⁷)NC(S)N(R⁸),S(O), S(O)₂, S(O)₂N(R⁷), N(R⁷)S(O)₂, S(O)₂N(H)C(O), C(O)N(H)S(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸),P(O)(R⁸)N(R⁷),and N(R⁷):

K is optionally G-(CH(R¹⁵))_k wherein k is selected from an integer from 1 through 2 and G is selected from the group consisting of O, S, and N(R⁷) with the proviso that R¹⁵ is other than hydroxy, cyano, halo, amino, alkylamino, dialkylamino, and sulfhydryl when k is 1;

E⁰ is optionally E³ when K is G-(CH(R¹⁵))_k, wherein E³ is selected from the group consisting of a covalent single bond, O, S, C(O), C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R⁷), (R⁷)NC(O), C(S)N(R⁷), (R⁷)NC(S), OC(O)N(R⁷), (R⁷)NC(O)O, SC(S)N(R⁷), (R⁷)NC(S)S, SC(O)N(R⁷), (R⁷)NC(O)S, OC(S)N(R⁷), (R⁷)NC(S)O, N(R⁸)C(O)N(R⁷), (R⁷)NC(O)N(R⁸), N(R⁸)C(S)N(R⁷), (R⁷)NC(S)N(R⁸), S(O), S(O)₂, S(O)₂N(R⁷), N(R⁷)S(O)₂, P(O)(R⁸), N(R⁷P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R⁷), ON(R⁷),CR^4a═CR^4b, ethynylidene (C═C; 1,2-ethynyl), and C═CR^4aR^4b;

Y⁰ is formula (IV): wherein D⁵, D⁶, J⁵, and J⁶ are independently selected from the group consisting of C, N, O, S and a covalent bond with the provisos that no more than one is a covalent bond, K² is independently selected from the group consisting of C and N⁺, no more than one of D⁵, D⁶, J⁵, and J⁶ is O, no more than one of D⁵, D⁶, J⁵, and J⁶ is S, one of D⁵, D⁶, J⁵, and J⁶ must be a covalent bond when two of D⁵, D⁶, J⁵, and J⁶ are O and S, no more than three of D⁵, D⁶, J⁵, and J⁶ is N when K² is N⁺, and no more than four of D⁵, D⁶, J⁵, and J⁶ are N when K² is carbon, with the provisos that R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are each independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, and the divalent nature of oxygen and that D⁵, D⁶, J⁵, and J⁶ are selected to maintain an aromatic ring system;

R¹⁶ and R¹⁷ are optionally independently taken together to form a linear moiety spacer having from 3 through 6 atoms connected to form a ring selected from the group consisting of a cycloalkenyl ring having from 5 through 8 members, a partially saturated heterocyclyl ring having from 5 through 8 members, a heteroaryl having from 5 through 6 members, and an aryl;

Q^b is selected from the group consisting of NR²⁰R²⁰, ^+NR20R²¹R²², oxy, alkyl, aminoalkyl, alkylamino, dialkylamino, dialkylsulfoniumalkyl, acylamino and hydrido, wherein R²⁰, R²¹, and R²² are independently selected from the group consisting of hydrido, amino, alkyl, hydroxy, alkoxy, aminoalkyl, alkylamino, dialkylamino, and hydroxyalkyl with the provisos that no more than one of R²⁰, R²¹, and R²² is hydroxy, alkoxy, alkylamino, amino, and dialkylamino at the same time and that R²⁰, R²¹, and R²² must be other than be hydroxy, alkoxy, alkylamino, amino, and dialkylamino when K² is N⁺;

R²⁰ and R²¹, R²⁰ and R²², and R²¹ and R²² are independently optionally selected to form a spacer pair wherein a spacer pair is taken together to form a linear moiety having from 4 through 7 atoms connecting the points of bonding of said spacer pair members to form a heterocyclyl ring having 5 through 8 members with the proviso that no more than one of the group consisting of spacer pairs R²⁰ and R²¹, R²⁰ and R²², and R²¹ and R²² is used at the same time;

Q^b is optionally selected from the group consisting of N(R²⁶)SO₂N(R²³)(R²⁴), N(R²⁶)C(O)OR⁵, N(R²⁶)C(O)SR⁵, N(R²⁶)C(S)OR⁵ and N(R²⁶)C(S)SR⁵ with the proviso that no more than one of R²³, R²⁴, and R²⁶ is hydroxy, alkoxy, alkylamino, amino, and dialkylamino when two of the group consisting of R²³, R²⁴, and R²⁶ are bonded to the same atom;

Q^b is optionally selected from the group consisting of dialkylsulfonium, trialkylphosphonium, C(NR²⁵)NR²³R²⁴, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴, N(R²⁶)C(O)N(R²³)(R²⁴), N(R²⁶)C(S)N(R²³)(R²⁴), C(NR²⁵)OR⁵, C(O)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), C(S)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), N(R²⁶)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), ON(R²⁶)C(NR²⁵)N(R²³)(R²⁴), N(R²⁶)N(R²⁶)SO₂N(R²³)(R²⁴), C(NR²⁵)SR⁵, C(O)NR²³R²⁴, and C(O)NR²³R²⁴ with the provisos that no more than one of R²³, R²⁴,and R²⁶ can be hydroxy, alkoxy, alkylaminol, amino, or dialkylamino when two of the group consisting of R²³, R²⁴, and R²⁶ are bonded to the same atom and that said Q^b group is bonded directly to a carbon atom;

R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, alkyl, hydroxy, alkoxy, aminoalkyl, alkylamino, dialkylamino, amino, and hydroxyalkyl;

R²³ and R²⁴ are optionally taken to-ether to form a linear spacer moiety having from 4 through 7 atoms connecting the points of bonding to form a heterocyclyl ring having 5 through 8 members;

Q^s is selected from the group consisting of a single covalent bond, (CR³⁷R²⁸)_b—(W⁰)_az wherein az is an integer selected from 0 through 1, b is an integer selected from 1 through 4, and W⁰ is selected from the group consisting of O, S, C(O), C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R¹⁴), (R¹⁴)NC(O), C(S)N(R¹⁴), (R¹⁴)NC(S), OC(O)N(R¹⁴), SC(S)N(R¹⁴), SC(O)N(R¹⁴), OC(S)N(R¹⁴), N(R¹⁵)C(O)N(R¹⁴), (R¹⁴)NC(O)N(R¹⁵), N(R¹⁵)C(S)N(R¹⁴), (R¹⁴)NC(S)N(R¹⁵), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸) P(O)(R⁸)N(R⁷), N(R¹⁴), ON(R¹⁴), (CH(R¹⁴))_c—W¹—(CH(R¹⁵))_d wherein c and d are integers independently selected from 1 through 4, and W¹ is selected from the group consisting of O, S, C(O), C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R¹⁴), (R¹⁴)NC(O), C(S)N(R¹⁴), (R¹⁴)NC(S), OC(O)N(R¹⁴), (R¹⁴)NC(O)O, SC(S)N(R¹⁴), (R¹⁴)NC(S)S, SC(O)N(R¹⁴), (R¹⁴)NC(O)S, OC(S)N(R¹⁴), (R¹⁴)NC(S)O, N(R¹⁵)C(O)N(R¹⁴), (R¹⁴)NC(O)N(R¹⁵), N(R¹⁵)C(S)N(R¹⁴), (R¹⁴)NC(S)N(R¹⁵), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R¹⁴), ON(R¹⁴), and (CH(R¹⁴))_e—W—(CH(R¹⁵)_h wherein e and h are integers independently selected from 0 through 2 and W²² is selected from the group consisting of CR⁴¹═CR⁴², CR⁴¹R⁴²═C; vinylidene), ethynylidene (C═C; 1,2-ethynyl), 1,2-cyclopropyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, and 3,4-tetrahydrofuranyl, with the provisos that R¹⁴ and R¹⁵ are selected from other than halo and cyano when directly bonded to N and that (CR³⁷R³⁸)_b, (CH(R¹⁴))_c, (CH(R¹⁵))_e and are bonded to E⁰;

Y⁰ is optionally Y^AT wherein Y^At is Q^b-Q^s;

Y⁰ is optionally Q^b-Q^ss wherein Q^ss is selected from the group consisting of (CR³⁷R³⁸)_f wherein f is an integer selected from 1 through 6, (CH(R¹⁴))_c—W¹—(CH(R¹⁵))_d wherein c and d are integers independently selected from 1 through 4, and W¹ is selected from the group consisting of W¹ is selected from the group consisting of O, S. C(O), C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R¹⁴), (R¹⁴)NC(O), C(S)N(R¹⁴), (R¹⁴)NC(S), OC(O)N(R¹⁴), (R¹⁴)NC(O)O, SC(S)N(R¹⁴), (R¹⁴)NC(S)S, SC(O)N(R¹⁴), (R¹⁴)NC(O)S, OC(S)N(R¹⁴), (R¹⁴)NC(S)O, N(R¹⁵)C(O)N(R¹⁴), (R¹⁴)NC(O)N(R¹⁵), N(R¹⁵)C(S)N(R¹⁴), (R¹⁴)NC(S)N(R¹⁵), S(O) S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R¹⁴), ON(R¹⁴), and (CH(R¹⁴))_e—W²—(CH(R¹⁵))_h wherein e and h are integers independently selected from 0 through 2 and W² is selected from the group consisting of CR^4a═CR^4b, ethynylidene (C═C; 1,2-ethynyl), and C═CR^4aR^4b with the provisos that R¹⁴ and R¹⁵ are selected from other than halo and cyano when directly bonded to N and that (CR³⁷R³⁸)_f, (CH(R¹⁴))_c, and (CH(R¹⁴))_e are bonded to E⁰;

Y⁰ is optionally Q^b-Q^sss wherein Q^sss is (CH(R³⁸))_r—W³, r is an integer selected from 1 through 3, W³ is selected from the group consisting of 1,1-cyclopropyl, 1,2-cyclopropyl, 1,1-cyclobutyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,4-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,5-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 1,4-piperazinyl, 2,3-piperazinyl, 2,5-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 1,4-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,5-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 3,5-piperidinyl, 3,6-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2H-2,3-pyranyl, 2H-2,4-pyranyl, 2H-2,5-pyranyl, 4H-2,3-pyranyl, 4H-2,4-pyranyl, 4H-2,5-pyranyl, 2H-pyran-2-one-3,4-yl, 2H-pyran-2-one-4,5-yl, 4H-pyran-one-2,3-yl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, 3,4-tetrahydrofuranyl, 2,3-tetrahydropyranyl, 2,4-tetrahydropyranyl, 2,5-tetrahydropyranyl, 2,6-tetrahydropyranyl, 3,4-tetrahydropyranyl, and 3,5-tetrahydropyranyl, and each carbon and hyrido containing nitrogen member of the ring of the W³ other than the points of attachment is optionally substituted with one or more of the group consisting of R⁹, R¹⁰, R¹¹, and R¹², with the proviso that (CH(R³⁸))_r is bonded to E⁰ and Q^b is bonded to lowest numbered substituent position of each W³;

Y⁰ is optionally Q^b-Q^sssr wherein Q^sssr is (CH(R³⁸))_r—W⁴, r is an integer selected from 1 through 3, W⁴ is selected from the group consisting of 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,4-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,5-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 1,4-piperazinyl, 2,3-piperazinyl, 2,5-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 1,4-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,5-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 3,5-piperidinyl, 3,6-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2H-2,3-pyranyl, 2H-2,4-pyranyl, 2H-2,5-pyranyl, 4H-2,3-pyranyl, 4H-2,4-pyranyl, 4H-2,5-pyranyl, 2H-pyran-2-one-3,4-yl, 2H-pyran-2-one-4,5-yl, 4H-pyran-one-2,3-yl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, 3,4-tetrahydrofuranyl, 2,3-tetrahydropyranyl, 2,4-tetrahydropyranyl, 2,5-tetrahydropyranyl, 2,6-tetrahydropyranyl, 3,4-tetrahydropyranyl, and 3,5-tetrahydropyranyl, and each carbon and hydrido containing nitro-en member of the ring of the W⁴ other than the points of attachment is optionally substituted with one or more of the Group consisting of R⁹, R¹⁰, R¹¹, and R¹², with the provisos that (CH(R²⁸))_r is bonded to E⁰ and Q^b is bonded to highest number substituent position of each W⁴;

Y⁾ is optionally Q^b-Q^ssss wherein Q^ssss is (CH(R³⁸))_r—W⁵, r is an integer selected from 1 through 3, W⁵ is selected from the group consisting of 1,4-indenyl, 1,5-indenyl, 1,6-indenyl, 1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl, 2,4-indenyl, 3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl, 2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl, 2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl, 3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl, 2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl, 3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl, 3,7-benzothiophenyl, 2,7-imidazo(1,2-a)pyridinyl, 3,4-imidazo(1,2-a)pyridinyl, 3,5-imidazo(1,2-a)pyridinyl, 3,6-imidazo(1,2-a)pyridinyl, 3,7-imidazo(1,2-a)pyridinyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl, 2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl, 1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl, 2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl, 3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl, 2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl, 2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,5-benzisoxazolyl, 3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl, 1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl, 2,4-naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl, 2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2,6-quinolinyl, 2,7-quinolinyl, 2,8-quinolinyl, 3,4-quinolinyl, 3,5-quinolinyl, 3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4.5-quinolinyl, 4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl, 1,4-isoquinolinyl, 1,5-isoquinolinyl, 1,6-isoquinolinyl, 1,7-isoquinolinyl, 1,8-isoquinolinyl, 3,4-isoquinolinyl, 3,5-isoquinolinyl, 3,6-isoquinolinyl, 3,7-isoquinolinyl, 3,8-isoquinolinyl, 4,5-isoquinolinyl, 4,6-isoquinolinyl, 4,7-isoquinolinyl, 4,8-isoquinolinyl, 3,4-cinnolinyl, 3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl, 4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and 4,8-cinnolinyl, and each carbon and hydrido containing nitro-en member of the ring of the W⁵ other than the points of attachment is optionally substituted with one or more of the group consisting of R⁹, R¹⁰, R¹¹, and R¹², with the proviso that Q^b is bonded to lowest number substituent position of each W⁵ and that (CH(R³⁸))_r is bonded to E⁰;

Y⁰ is optionally Q^b-Q^sssr wherein Q^ssssr is (CH(R³⁸))_r—W⁶, r is an integer selected from 1 through 3, W⁶ is selected from the group consisting of 1,4-indenyl, 1,5-indenyl, 1,6-indenyl, 1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,3-indenyl, 2,4-indenyl, 3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl, 2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl, 2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl, 3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl, 2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl, 3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl, 3,7-benzothiophenyl, 2,7-imidazo(1,2-a)pyridinyl, 3,4-imidazo(1,2-a)pyridinyl, 3,5-imidazo(1,2-a)pyridinyl, 3,6-imidazo(1,2-a)pyridinyl, 3,7-imidazo(1,2-a)pyridinyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl, 2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl, 1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl, 2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl, 3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl, 2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl, 2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,5-benzisoxazolyl, 3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl, 1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl, 2,4-naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl, 2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2.6-quinolinyl, 2,7-quinolinyl, 2,8-quinolinyl, 3,4-quinolinyl, 3,5-quinolinyl, 3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4,5-quinolinyl, 4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl, 1,4-isoquinolinyl, 1,5-isoquinolinyl, 1,6-isoquinolinyl, 1,7-isoquinolinyl, 1,8-isoquinolinyl, 3,4-isoquinolinyl, 3,5-isoquinolinyl, 3,6-isoquinolinyl, 3,7-isoquinolinyl, 3,8-isoquinolinyl, 4,5-isoquinolinyl, 4,6-isoquinolinyl, 4,7-isoquinolinyl, 4.8-isoquinolinyl, 3,4-cinnolinyl, 3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl, 4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and 4,8-cinnolinyl, and each carbon and hydrido containing nitrogen member of the ring of the W⁶ other than the points of attachment is optionally substituted with one or more of the group consisting of R⁹, R¹⁰, R¹¹, and R¹², with the proviso that Q^b is bonded to highest number substituent position of each W⁶ and that (CH(R³⁸))_r is bonded to E⁰. In another embodiment of a compound of Formula I or a pharmaceutically acceptable salt thereof,

J is selected from the group consisting of O and S;

B is formula (V): wherein D¹, D², J¹, J² and K¹ are independently selected from the group consisting of C, N, O, S and a covalent bond with the provisos that no more than one is a covalent bond, no more than one of D¹, D², J¹, J² and K¹ is O, no more than one of D¹, D², J¹, J² and K¹ is S, one of D¹, D², J¹, J² and K¹ must be a covalent bond when two of D¹, D², J¹, J² and K¹ are O and S, and no more than four of D¹, D², J¹, J² and K¹ are N, with the provisos that D¹, D², J¹, J² and K¹; are selected to maintain an aromatic ring system and that R³², R³³, R³⁴, R³⁵, and R³⁶ are each independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, and the divalent nature of oxygen;

R⁹, R¹⁰, R¹¹, R¹², R¹³, R¹⁶, R¹⁷, R¹⁸, R¹⁹, R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of heterocyclylalkoxy, N-alkyl-N-arylamino, heterocyclylamino, heterocyclylalkylamino, hydrido, acetamido, haloacetamido, amidino, guanidino, dialkylsulfonium, trialkylphosphonium, dialkylsulfoniumalkyl, carboxy, heteroaralkylthio, haloalkylthio, alkanoyloxy, alkoxy, alkoxyalkyl, haloalkoxylalkyl, heteroaralkoxy, cycloalkylamino, acylalkyl, acylalkoxy, aryloylalkoxy, heterocyclyloxy, aralkylaryl, aralkyl, aralkenyl, aralkynyl, heterocyclyl, perhaloaralkyl, aralkylsulfonyl, aralkylsulfonylalkyl, aralkylsulfinyl, aralkylsulfinylalkyl, halocycloalkyl, halocycloalkenyl, cycloalkylsulfinyl, cycloalkylsulfinylalkyl, cycloalkylsulfonyl, cycloalkylsulfonylalkyl, heteroarylamino, N-heteroarylamino-N-alkylamino, heteroaralkylamino, cycloalkoxy, cycloalkenyloxy, cycloalkoxyalkyl, cycloalkylalkoxy, cycloalkenyloxyalkyl, cycloalkylenedioxy, halocycloalkoxy, halocycloalkoxyalkyl, halocycloalkenyloxy, halocycloalkenyloxyalkyl, hydroxy, amino, alkoxyamino, thio, nitro, alkylamino, alkylthio, alkylthioalkyl, arylamino, aralkylamino, arylthio, arylthioalkyl, heteroaralkoxyalkyl, alkylsulfinyl, alkylsulfinylalkyl, arylsulfinylalkyl, arylsulfonylalkyl, heteroarylsulfinylalkyl, heteroarylsulfonylalkyl, alkylsulfonyl, alkylsulfonylalkyl, haloalkylsulfinylalkyl, haloalkylsulfonylalkyl, alkylsulfonamido, alkylaminosulfonyl, amidosulfonyl, monoalkyl amidosulfonyl, dialkyl amidosulfonyl, monoarylamidosulfonyl, arylsulfonamido, diarylamidosulfonyl, monoalkyl monoaryl amidosulfonyl, arylsulfinyl, arylsulfonyl, heteroarylthio, heteroarylsulfinyl, heteroarylsulfonyl, heterocyclylsulfonyl, heterocyclylthio, alkanoyl, alkenoyl, aroyl, heteroaroyl, aralkanoyl, heteroaralkanoyl, haloalkanoyl, alkyl, alkenyl, alkynyl, alkenyloxy, alkenyloxyalky, alkylenedioxy, haloalkylenedioxy, cycloalkyl, cycloalkylalkanoyl, cycloalkenyl, cycloalkylalkyl, cycloalkenylalkyl, halo, haloalkyl, haloalkenyl, haloalkoxy, hydroxyhaloalkyl, hydroxyaralkyl, hydroxyalkyl, alkylenylamino, hydoxyheteroaralkyl, haloalkoxyalkyl, aryl, aralkyl, aryloxy, aralkoxy, aryloxyalkyl, saturated heterocyclyl, partially saturated heterocyclyl, heteroaryl, heteroaryloxy, heteroaryloxyalkyl, heteroarylalkyl, arylalkenyl, heteroarylalkenyl, carboxyalkyl, carboalkoxy, alkoxycarboxamido, alkylamidocarbonylarido, arylamidocarbonylamido, carboalkoxyalkyl, carboalkoxyalkenyl, carboxy, carboaralkoxy, carboxamido, carboxamidoalkyl, cyano, carbohaloalkoxy, phosphono, phosphonoalkyl, diaralkoxyphosphono, and diaralkoxyphosphonoalkyl;

R¹⁶, R¹⁹, R³², R³³, R³⁴, R³⁵, and R³⁶ are independently optionally Q^b;

B is optionally selected from the group consisting of hydrido, trialkylsilyl, C2-C8 alkyl, C3-C8 alkylenyl, C3-C8 alkenyl, C3-C8 alkynyl, C2-C8 haloalkyl, and C3-C8 haloalkenyl wherein each member of group B is optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶;

B is optionally selected from the group consisting of C3-C12 cycloalkyl, C5-C10 cycloalkenyl, and C4-C9 saturated heterocyclyl, wherein each ring carbon is optionally substituted with R³³, a ring carbon other than the ring carbon at the point of attachment of B to A is optionally substituted with oxo provided that no more than one ring carbon is substituted by oxo at the same time, ring carbon and nitrogen atoms adjacent to the carbon atom at the point of attachment is optionally substituted with R⁹ or R¹³, a ring carbon or nitrogen atom adjacent to the R⁹ position and two atoms from the point of attachment is optionally substituted with R¹⁰, a ring carbon or nitrogen atom adjacent to the R¹³ position and two atoms from the point of attachment is optionally substituted with R¹², a ring carbon or nitrogen atom three atoms from the point of attachment and adjacent to the R¹⁰ position is optionally substituted with R¹¹, a ring carbon or nitrogen atom three atoms from the point of attachment and adjacent to the R¹² position is optionally substituted with R³³, and a ring carbon or nitrogen atom four atoms from the point of attachment and adjacent to the R¹¹ and R¹³ positions is optionally substituted with R³⁴;

A is selected from the group consisting of single covalent bond, (W⁷)_rr—(CH(R¹⁵))_pa and (CH(R¹⁵))_pa—(W⁷)_rr wherein rr is an integer selected from 0 through 1, pa is an integer selected from 0 through 6, and W⁷ is selected from the group consisting of O, S, C(O), C(O)N(R⁷), C(S)N(R⁷), (R⁷)NC(O), (R⁷)NC(S), and N(R⁷) with the proviso that no more than one of the group consisting of rr and pa can be 0 at the same time;

R⁷ and R⁸ are independently selected from the group consisting of hydrido, hydroxy, alkyl, and alkoxyalkyl;

R¹⁴, R¹⁵, R³⁷, and R³⁸ are independently selected from the group consisting of hydrido, hydroxy, halo, alkyl, alkoxyalkyl, haloalkyl, haloalkoxy, and haloalkoxyalkyl;

R¹⁴ and R¹⁵ can be independently selected from the group consisting of aroyl and heteroaroyl, wherein R³⁸ is optionally substituted at from one through three of the ring carbons with a substituent selected from the group consisting of R¹⁶, R¹⁷, R¹⁸, and R¹⁹;

Ψ is selected from the group consisting of NR⁵, C(O), and S(O)₂;

R⁵ is selected from the group consisting of hydrido, hydroxy, alkyl, and alkoxy;

R³⁹ and R⁴⁰ are independently selected from the group consisting of hydrido, hydroxy, halo, hydroxyalkyl, alkyl, alkoxyalkyl, haloalkyl, haloalkoxy, and haloalkoxyalkyl;

R¹ is selected from the group consisting of hydrido, alkyl, alkenyl, cyano, halo, haloalkyl, haloalkoxy, haloalkylthio, amino, aminoalkyl, alkylamino, amidino, guanidino, hydroxy, hydroxyamino, alkoxy, hydroxyalkyl, alkoxyamino, thiol, alkylthio, and phosphono;

R² is Z⁰-Q;

Z⁰ is selected from the group consisting of covalent single bond, (CR⁴¹R⁴²)_q wherein q is an integer selected from 1 through 3, (CH(R⁴¹))_g—W⁰—(CH(R⁴²))_p wherein g and p are integers independently selected from 0 through 3 and W⁰ is selected from the group consisting of O, S, C(O), S(O), S(O)₂, N(R⁴¹), and ON(R⁴¹), and (CH(R⁴¹))_e—W²²—(CH(R⁴²))_h wherein e and h are integers independently selected from 0 through 2 and W₂₂ is selected from the group consisting of CR⁴¹═CR⁴², 1,2-cyclopropyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrabydrofuranyl, 2,5-tetrahydrofuranyl, and 3,4-tetrahydrofuranyl, with the provisos that Z⁰ is directly bonded to the pyrazinone ring and W²² is optionally substituted with one or more substituents selected from the group consisting of R⁹, R¹⁰, R¹¹, R¹², and R¹³;

R⁴¹ and R⁴² are independently selected from the group consisting of amidino, hydroxyamino, hydrido, hydroxy, amino, and alkyl;

Q is selected from the group consisting of hydrido, with the proviso that Z⁰ is other than a covalent single bond, the formula (II): wherein D¹, D², J¹, J² and K¹ are independently selected from the group consisting of C, N, O, S and a covalent bond with the provisos that no more than one is a covalent bond, no more than one of D¹, D², J¹, J² and K¹ is O, no more than one of D¹, D², J¹, J² and K¹ is S, one of D¹, D², J¹, J² and K¹ must be a covalent bond when two of D¹, D², J¹, J² and K¹ are O and S, and no more than four of D¹, D², J¹, J² and K¹ is N, with the provisos that D¹, D², J¹, J² and K¹ are selected to maintain an aromatic ring system and that R⁹, R¹⁰, R¹¹, R¹², and R¹³ are each independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, and the divalent nature of oxygen;

K is (CR^4aR^4b)_n wherein n is 1 or 2;

R^4a and R^4b are independently selected from the group consisting of halo, hydrido, hydroxyalkyl, alkyl, alkoxyalkyl, alkylthioalkyl, and haloalkyl;

E⁰ is selected from the group consisting of a covalent single bond, C(O), C(S), C(O)N(R⁷), (R⁷)NC(O), S(O)₂, (R⁷)NS(O)₂, and S(O)₂N(R⁷);

Y⁰ is formula (IV): wherein D⁵, D⁶, J⁵, and J⁶ are independently selected from the group consisting of C, N, O, S and a covalent bond with the provisos that no more than one is a covalent bond, K² is C, no more than one of D⁵, D⁶, J⁵, and J⁶ is O, no more than one of D⁵, D⁶, J⁵, and J⁶ is S, one of D⁵, D⁶, J⁵, and J⁶ must be a covalent bond when two of D⁵, D⁶, J⁵, and J⁶ are O and S, and no more than four of D⁵, D⁶, J⁵, and J⁶ are N when K² is carbon, with the provisos that R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are each independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, and the divalent nature of oxygen and that D⁵, D⁶, J⁵, and J⁶ are selected to maintain an aromatic ring system;

Q^b is selected from the group consisting of NR²⁰R²¹, ⁺NR²⁰R²¹R²², aminoalkyl, and hydrido, wherein R²⁰, R²¹, and R²² are independently selected from the group consisting of hydrido, alkyl, hydroxy, amino, aminoalkyl, dialkylamino, alkylamino, and hydroxyalkyl with the proviso that no more than one of R²⁰ and R²¹ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino at the same time;

Q^b is optionally selected from the group consisting of C(NR²⁵)NR²³R²⁴, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), C(O)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), N(R²⁶)N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and ON(R²⁶)C(NR²⁵)N(R²³)(R²⁴) with the provisos that no more than one of R²³, R²⁴, and R²⁶ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino when two of the group consisting of R²³, R²⁴, and R²⁶ are bonded to the same atom; R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, alkyl, hydroxy, amino, aminoalkyl, dialkylamino, alkylamino, and hydroxyalkyl;

Q^s is selected from the group consisting of a single covalent bond, (CR³⁷R³⁸)_b—(W⁰)_az wherein az is an integer selected from 0 through 1, b is an integer selected from 1 through 5, and W⁰ is selected from the group consisting of O, C(O), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, and N(R¹⁴), (CH(R¹⁴))_c—W¹—(CH(R¹⁵))_d wherein c and d are integers independently selected from 1 through 4 and W¹ is selected from the group consisting of O, S, C(O), C(S), C(O)O, C(S)O, C(O)S, C(S)S, C(O)N(R¹⁴), (R¹⁴)NC(O), C(S)N(R¹⁴), (R¹⁴)NC(S), OC(O)N(R¹⁴), (R¹⁴)NC(O)O, SC(S)N(R¹⁴), (R¹⁴)NC(S)S, SC(O)N(R¹⁴), (R¹⁴)NC(O)S, OC(S)N(R¹⁴), (R¹⁴)NC(S)O, N(R¹⁵)C()N(R¹⁴), (R¹⁴)NC(O)N(R¹⁵), N(R¹⁵)C(S)N(R¹⁴), (R¹⁴)NC(S)N(R¹⁵), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, P(O)(R⁸), N(R⁷)P(O)(R⁸), P(O)(R⁸)N(R⁷), N(R¹⁴), ON(R¹⁴), and (CH(R¹⁴))_e—W²²—(CH(R¹⁵))_h wherein e and h are integers independently selected from 0 through 2 and W²² is selected from the group consisting of CR⁴¹′CR⁴², CR⁴¹R⁴²═C; vinylidene), ethynylidene (C═C; 1,2-ethynyl), 1,2-cyclopropyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 13-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, and 3,4-tetrahydrofuranyl, with the provisos that R¹⁴ and R¹⁵ are selected from other than halo and cyano when directly bonded to N and that (CR³⁷R³⁸)_b, (CH(R¹⁴))_c, and (CH(R¹⁴))_e are bonded to E⁰;

Y⁰ is optionally Y^AT wherein Y^AT is Q^b-Q^s;

Y⁰ is optionally Q^b-Q^ss wherein Q^ss is selected from the group consisting of (CR³⁷R³⁸)_f wherein f is an integer selected from 1 through 4, (CH(R¹⁴))_c—W¹—(CH(R¹⁵))_d wherein c and d are integers independently selected from 1 through 2. and W¹ is selected from the group consisting of W¹ is selected from the group consisting of O, S, C(O), C(O)N(R¹⁴), (R¹⁴)NC(O), N(R¹⁵)C(O)N(R¹⁴), (R¹⁴)NC(O)N(R¹⁴), ON(R¹⁴), and (CH(R¹⁴))_e—W²—(CH(R¹⁵))_h wherein e and h are integers independently selected from 0 through 2 and W² is selected from the group consisting of CR^4aCR^4b, ethynylidene (C═C; 1,2-ethynyl), and C═CR^4aR^4b with the provisos that R¹⁴ and R¹⁵ are selected from other than halo when directly bonded to N and that (CR³⁷R³⁸)_f, (CH(R¹⁴))_c, and (CH(R¹⁴))_e are bonded to E⁰;

Y⁰ is optionally Q^b-Q^sss wherein Q^sss is (CH(R³⁸))_r—W³, r is an integer selected from 1 through 2. W³ is selected from the group consisting of 1,1-cyclopropyl, 1,2-cyclopropyl, 1,1-cyclobutyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,4-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,5-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 1,4-piperazinyl, 2,3-piperazinyl, 2,5-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 1,4-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,5-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 3,5-piperidinyl, 3,6-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2H-2,3-pyranyl, 2H-2,4-pyranyl, 2H-2,5-pyranyl, 4H-2,3-pyranyl, 4H-2,4-pyranyl, 4H-2,4-pyranyl, 2H-pyran-2-one-3,4-yl, 2H-pyran-2-one-4,5-yl, 4H-pyran-one-2,3-yl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, 3,4-tetrahydrofuranyl, 2,3-tetrahydropyranyl, 2,4-tetrahydropyranyl, 2,5-tetrahydropyranyl, 2,6-tetrahydropyranyl, 3,4-tetrahydropyranyl, and 3,5-tetrahydropyranyl, and each carbon and hyrido containing nitrogen member of the ring of the W³ other than the points of attachment is optionally substituted with one or more of the group consisting of R⁹, R¹⁰, R¹¹, and R¹², with the proviso that (CH(R³⁸))_r is bonded to E⁰ and Q^b is bonded to lowest numbered substituent position of each W³;

Y⁰ is optionally Q^b-Q^sssr wherein Q^sssr is (CH(R³⁸))_r—W⁴, r is an integer selected from 1 through 2, W⁴ is selected from the group consisting of 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,4-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,5-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 1,4-piperazinyl, 2,3-piperazinyl, 2,5-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 1,4-piperidinyl, 2,3-piperidinyl, 2.4-piperidinyl, 2,5-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 3,5-piperidinyl, 3,6-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2H-2,3-pyranyl, 2H-2,4-pyranyl, 2H-2,>pyranyl, 4H-2,3-pyranyl, 4H-2,4-pyranyl, 4H-2,5-pyranyl, 2H-pyran-2-one-3.4-yl, 2H-pyran-2-one-4,5-yl, 4H-pyran-4one-2,3-yl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl 3,4-tetrahydrofuranyl, 2,3-tetrahydropyranyl, 2,4-tetrahydropyranyl, 2,5-tetrahydropyranyl, 2,6-tetrahydropyranyl, 3,4-tetrahydropyranyl, and 3,5-tetrahydropyranyl and each carbon and hyrido containing nitrogen member of the ring of the W⁴ other than the points of attachment is optionally substituted with one or more of the group consisting of

R⁹, R¹⁰, R¹¹, and R¹², with the provisos that (CH(R³⁸))_r is bonded to E⁰ and Q^b is bonded to highest number substituent position of each W⁴;

Y⁰ is optionally Q^b-Q^ssss wherein Q^ssss is (CH(R³⁸))_r—W⁵, r is an integer selected from 1 through 2, W⁵ is selected from the group consisting of 1,4-indenyl, 1,5-indenyl, 1,6-indenyl, 1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl, 2,4-indenyl, 3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl, 2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl, 2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl, 3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl, 2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl, 3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl, 3,7-benzothiophenyl, 2,7-imidazo(1,2-a)pyridinyl, 3,4-imidazo(1,2-a)pyridinyl, 3,5-imidazo(1,2-a)pyridinyl, 3,6-imidazo(1,2-a)pyridinyl, 3,7-imidazo(1,2-a)pyridinyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl, 2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl, 1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl; 2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl, 3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl, 2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl, 2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,5-benzisoxazolyl, 3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl, 1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl, 2,4-naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl, 2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2,6-quinolinyl, 2,7-quinolinyl, 2,8-quinolinyl, 3.4-quinolinyl, 3,5-quinolinyl, 3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4,5-quinolinyl, 4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl, 1,4-isoquinolinyl, 1,5-isoquinolinyl, 1,6-isoquinolinyl, 1.7-isoquinolinyl, 1,8-isoquinolinyl, 3,4-isoquinolinyl, 3,5-isoquinolinyl, 3,6-isoquinolinyl, 3,7-isoquinolinyl, 3,8-isoquinolinyl, 4,5-isoquinolinyl, 4,6-isoquinolinyl, 4,7-isoquinolinyl, 4,8-isoquinolinyl, 3,4-cinnolinyl, 3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,9-cinnolinyl, 4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and 4,8-cinnolinyl, and each carbon and hyrido containing nitrogen member of the ring of the W other than the points of attachment is optionally substituted with one or more of the group consisting of R⁹, R¹⁰, R¹¹, and R¹², with the proviso that Q^b is bonded to lowest number substituent position of each W⁵ and that (CH(R³⁸))_r is bonded to E⁰;

Y^b is optionally Q^b-Q^ssssr wherein Q^ssssr is (CH(R³⁸))_r—W⁶, r is an integer selected from 1 through 2, W⁶ is selected from the group consisting of 1,4-indenyl, 1,5-indenyl, 1,6-indenyl, 1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl, 2,4-indenyl, 3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl, 2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl, 2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl, 3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl, 2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl, 3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl, 3,7-benzothiophenyl, 2,7-imidazo(1,2-a)pyridinyl, 3,4-imidazo(1,2-a)pyridinyl, 3,5-imidazo(1,2-a)pyridinyl, 3,6-imidazo(1,2-a)pyridinyl, 3,7-imidazo(1,2-a)pyridinyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl, 2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl, 1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl, 2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl, 3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl, 2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl, 2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,5-benzisoxazolyl, 3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl, 1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl, 2,4-naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl, 2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2,6-quinolinyl, 2,7-quinolinyl, 2,8-quinolinyl, 3,4-quinolinyl, 3,5-quinolinyl, 3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4,5-quinolinyl, 4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl, 1,4-isoquinolinyl, 1,5-isoquinolinyl, 1,6-isoquinolinyl, 1,7-isoquinolinyl, 1,5-isoquinolinyl, 3,4-isoquinolinyl, 3.5-isoquinolinyl, 3,6-isoquinolinyl, 3,7-isoquinolinyl, 3,8-isoquinolinyl, 4,5-isoquinolinyl, 4,6-isoquinolinyl, 4,7-isoquinolinyl, 4,8-isoquinolinyl, 3,4-cinnolinyl, 3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl, 4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and 4,8-cinnolinyl, and each carbon and hyrido containing nitrogen member of the ring of the W⁶ other than the points of attachment is optionally substituted with one or more of the group consisting of R⁹,R¹⁰,R¹¹, and R¹², with the proviso that Q^b is bonded to highest number substituent position of each W⁶ and that (CH(R³⁸))_r is bonded to E⁰.

In a preferred embodiment of a compound of Formula I or a pharmaceutically acceptable salt thereof,

J is O;

B is formula (V): wherein D¹, D², J¹, J² and K¹ are independently selected from the group consisting of C, N, O, S and a covalent bond with the provisos that no more than one is a covalent bond, no more than one of D¹, D², J¹, J² and K¹ is O, no more than one of D¹, D², J¹, J² and K¹ is S, one of D¹, D², J¹, J² and K¹ must be a covalent bond when two of D¹, D², J¹, J² and K¹ are O and S, and no more than four of D¹, D², J¹, J² and K¹ are N, with the proviso that R³², R³³, R³⁴, R³⁵, and R³⁶ are each independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, and the divalent nature of oxygen and that D¹, D², J¹, J² and K¹ are selected to maintain an aromatic ring system;

R⁹, R¹⁰, R¹¹, R¹², R¹³, R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkylenedioxy, haloalkylthio, alkanoyloxy, alkoxy, alkoxyalkyl, haloalkoxylalkyl, hydroxy, amino, alkoxyamino, nitro, alkylamino, alkylthio, alkylthioalkyl, alkylsulfinyl, alkylsulfonyl, alkylsulfonylalkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, alkylsulfonamido, alkylaminosulfonyl, amidosulfonyl, monoalkyl amidosulfonyl, dialkyl amidosulfonyl, alkanoyl, haloalkanoyl, alkyl, alkenyl, halo, haloalkyl, haloalkenyl, haloalkoxy, hydroxyhaloalkyl, hydroxyalkyl, aminoalkyl, haloalkoxyalkyl, carboxyalkyl, carboalkoxy, carboxy, carboxamido, carboxamidoalkyl, and cyano;

R³², R³³, R³⁴, R³⁵, and R³⁶ are independently optionally Q^b;

B is optionally selected from the group consisting of hydrido, trialkylsilyl, C2-C8 alkyl, C3-C8 alkylenyl, C3-C8 alkenyl, C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group B may be optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶;

B is optionally selected from the group consisting of C3-C12 cycloalkyl and C4-C9 saturated heterocyclyl, wherein each ring carbon may be optionally substituted with R³³, a ring carbon other than the ring carbon at the point of attachment of B to A may be optionally substituted with oxo provided that no more than one ring carbon is substituted by oxo at the same time, ring carbon and nitrogen atoms adjacent to the carbon atom at the point of attachment may be optionally substituted with R⁹ or R¹³, a ring carbon or nitrogen atom adjacent to the R⁹ position and two atoms from the point of attachment may be substituted with R¹⁰, a ring carbon or nitrogen atom adjacent to the R¹³ position and two atoms from the point of attachment may be substituted with R¹², a ring carbon or nitrogen atom three atoms from the point of attachment and adjacent to the R¹⁰ position may be substituted with R¹¹, a ring carbon or nitrogen atom three atoms from the point of attachment and adjacent to the R¹² position may be substituted with R³³, and a ring carbon or nitrogen atom four atoms from the point of attachment and adjacent to the R¹¹ and R³³ positions may be substituted with R³⁴;

A is selected from the group consisting of single covalent bond, (W⁷)_rr—(CH(R¹⁵))_pa and (CH(R¹⁵))_pa—(W⁷)_rr wherein rr is an integer selected from 0 through 1, pa is an integer selected from 0 through 6, and W⁷ is selected from the group consisting of O, S, C(O), (R⁷)NC(O), (R⁷)NC(S), and N(R⁷) with the proviso that no more than one of the group consisting of rr and pa is 0 at the same time;

R⁷ is selected from the group consisting of hydrido, hydroxy, and alkyl;

R¹⁵ is selected from the group consisting of hydrido, hydroxy, halo, alkyl, and haloalkyl;

Ψ is selected from the group consisting of NH and NOH;

R¹ is selected from the group consisting of hydrido, alkyl, alkenyl, cyano, halo, haloalkyl, haloalkoxy, haloalkylthio, amino, aminoalkyl, alkylamino, amidino, hydroxy, hydroxyamino, alkoxy, hydroxyalkyl, alkoxyamino, thiol, and alkylthio;

R² is Z⁰-Q;

Z⁰ is selected from the group consisting of covalent single bond, (CR⁴¹R⁴²)_q wherein q is an integer selected from 1 through 3, (CH(R⁴¹))_g—W⁰—(CH(R⁴²))_p wherein g and p are integers independently selected from 0 through 3 and W⁰ is selected from the group consisting of O, S, C(O), S(O), N(R⁴¹), and ON(R⁴¹), and (CH(R⁴¹))_e—(CH(R⁴²))_h wherein e and h are integers independently selected from 0 through 1 and W²² is selected from the group consisting of CR⁴¹═CR⁴², 1,2-cyclopropyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, and 3,4-tetrahydrofuranyl, with the proviso that Z⁰ is directly bonded to the pyrazinone ring;

R⁴¹ and R⁴² are independently selected from the group consisting of amidino, hydroxyamino, hydrido, hydroxy, amino, and alkyl;

Q is selected from the group consisting of hydrido, with the proviso that Z⁰ is other than a covalent single bond, and the formula (II): wherein D¹, D², J¹, J² and K¹ are independently selected from the group consisting of C, N, O, S and a covalent bond with the provisos that no more than one is a covalent bond, no more than one of D¹, D², J¹, J² and K¹ is O, no more than one of D¹, D², J¹, J² and K¹ is S, one of D¹, D², J¹, J² and K¹ must be a covalent bond when two of D¹, D², J¹, J² and K¹ are O and S, and no more than four of D¹, D², J¹, J² and K¹ are N, with the proviso that R⁹, R¹⁰, R¹¹, R¹², and R¹³ are each independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, and the divalent nature of oxygen and that D¹, D², J¹, J² and K¹ are selected to maintain an aromatic ring system;

K¹ is (CR^4aR^4b)_n wherein n is an integer selected from 1 through 2;

R^4a and R^4b are independently selected from the group consisting of halo, hydrido, hydroxyalkyl, alkyl, alkoxyalkyl, alkylthioalkyl, and haloalkyl;

E⁰ is ^E1, when K¹ is (CR^4aR^4b)_n, wherein E¹ is selected from the group consisting of a covalent single bond, C(O), C(S), C(O)N(R⁷), (R⁷)NC(O), S(O)₂, (R⁷)NS(O)₂,and S(O)₂N(R⁷):

Y⁰ is formula (IV): wherein D⁵, D⁶, J⁵, and J⁶ are independently selected from the group consisting of C, N, O, S and a covalent bond with the provisos that no more than one is a covalent bond, K² is C, no more than one of D⁵, D⁶, J⁵, and J⁶ is O, no more than one of D⁵, D⁶, J⁵, and J⁶ is S, one of D⁵, D⁶, J⁵, and J⁶ must be a covalent bond when two of D⁵, D⁶, J⁵, and J⁶ are O and S, and no more than four of D⁵, D⁶, J⁵, and J⁶ are N, with the proviso that R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are each independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, and the divalent nature of oxygen and that D⁵, D⁶, J⁵ and J⁶ are selected to maintain an aromatic ring system;

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, nitro, alkoxyamino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, alkenyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, alkylenylamino, haloalkoxyalkyl, carboalkoxy, and cyano;

R¹⁶ or R¹⁹ is optionally selected from the group consisting of NR²⁰R²¹, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴) and C(NR²⁵)NR²³R²⁴, with the proviso that R¹⁶, R¹⁹, and Q^b are not simultaneously hydrido;

Q^b is selected from the group consisting of NR²⁰R²¹, aminoalkyl, hydrido, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the provisos that no more than one of R²⁰ and R²¹ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino at the same time and that no more than one of R²³ and R²⁴ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino at the same time;

R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, alkyl, hydroxy, aminoalkyl, amino, dialkylamino, alkylamino, and hydroxyalkyl;

Q^s is selected from the group consisting of a single covalent bond, (CR³⁷R³⁸)_b wherein b is an integer selected from 1 through 4, and (CH(R¹⁴))_c—W¹—(CH(R¹⁵))_d wherein c and d are integers independently selected from 1 through 3 and W¹ is selected from the group consisting of C(O)N(R¹⁴), (R¹⁴)NC(O), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, and N(R¹⁴), with the provisos that R¹⁴ is selected from other than halo when directly bonded to N and that (CR^4aR^4b)_b, and (CH(R¹⁴))_c are bonded to E⁰;

R¹⁴ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl;

R³⁷ and R³⁸ are independently selected from the group consisting of hydrido, alkyl, and haloalkyl;

R³⁸ is optionally selected from the group consisting of aroyl and heteroaroyl;

Y⁰ is optionally Q^b-Q^ss wherein Q^ss is (CH(R¹⁴))_e—W²—(CH(R¹⁵))_h, wherein e and h are integers independently selected from 1 through 2 and W² is CR^4a CR^4b with the proviso that (CH(R¹⁴))_e is bonded to E⁰;

Y⁰ is optionally selected from the group consisting of Q^b-Q^ssss and Q^b-Q^ssssr wherein Q^ssss is (CH(R³⁸))_r—W⁵ and Q^ssssr is (CH(R³⁸))_r—W⁶, r is an integer selected from 1 through 2, and W⁵ and W⁶ are independently selected from the group consisting of 1,4-indenyl, 1,5-indenyl, 1,6-indenyl, 1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl, 2,4-indenyl, 3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl, 2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl, 2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl, 3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl, 2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl, 3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl, 3,7-benzothiophenyl, 2,7-imidazo(1,2-a)pyridinyl, 3,4-imidazo(1,2-a)pyridinyl, 3,5-imidazo(1,2-a)pyridinyl, 3,6-imidazo(1,2-a)pyridinyl, 3,7-imidazo(1,2-a)pyridinyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl, 2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl, 1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl, 2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl, 3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl, 2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl, 2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,5-benzisoxazolyl, 3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl, 1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl, 2,4-naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl, 2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2,6-quinolinyl, 2,7-quinolinyl, 2,8-quinolinyl, 3,4-quinolinyl, 3,5-quinolinyl, 3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4,5-quinolinyl, 4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl, 1,4-isoquinolinyl, 1,5-isoquinolinyl, 1,6-isoquinolinyl, 1,7-isoquinolinyl, 1,8-isoquinolinyl, 3,4-isoquinolinyl, 3,5-isoquinolinyl, 3,6-isoquinolinyl, 3,7-isoquinolinyl, 3,8-isoquinolinyl, 4,5-isoquinolinyl, 4,6-isoquinolinyl, 4,7-isoquinolinyl, 4,8-isoquinolinyl, 3,4-cinnolinyl, 3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl, 4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and 4,8-cinnolinyl, and each carbon and hyrido containing, nitrogen member of the ring of the W⁵ and of the ring of the W⁶, other than the points of attachment of W⁵ and W⁶, is optionally substituted with one or more of the group consisting of R⁹, R¹⁰, R¹¹, and R¹², with the provisos that Q^b is bonded to lowest number substituent position of each W⁵, Q^b is bonded to highest number substituent position of each W⁶, and (CH(R³⁸))_r is bonded to E⁰.

In a another preferred embodiment of a compound of Formula I, said compound is the Formula: or a pharmaceutically acceptable salt thereof, wherein;

B is phenyl or a heteroaryl of 5 or 6 ring members, wherein a nitrogen with a removable hydrogen or a carbon adjacent to the carbon at the point of attachment is optionally substituted by R³², a nitrogen with a removable hydrogen or a carbon at the other position adjacent to the point of attachment is optionally substituted by R³⁶, a nitrogen with a removable hydrogen or a carbon adjacent to R³² and two atoms from the point of attachment is optionally substituted by R³³, a nitrogen with a removable hydrogen or a carbon adjacent to R³⁶ and two atoms from the point of attachment is optionally substituted by R³⁵, and a nitrogen with a removable hydrogen or a carbon adjacent to both R³³ and R³⁵ is optionally substituted by R³⁴;

R⁹, R¹⁰, R¹¹, R¹², R¹³, R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkylenedioxy, haloalkylthio, alkanoyloxy, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, alkoxyalkyl, haloalkoxylalkyl, hydroxy, amino, alkoxyamino, nitro, alkylamino, N-alkyl-N-arylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, alkylthio, alkylthioalkyl, alkylsulfinyl, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, alkylsulfonyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, alkylsulfonylalkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, alkylsulfonamido, amidosulfonyl, alkanoyl, haloalkanoyl, alkyl, alkenyl, halo, haloalkyl, haloalkenyl, haloalkoxy, hydroxyhaloalkyl, hydroxyalkyl, aminoalkyl, haloalkoxyalkyl, carboxyalkyl, carboalkoxy, carboxy, carboxamido, carboxamidoalkyl, and cyano;

R³², R³³, R³⁴, R³⁵, and R³⁶ are independently optionally Q^b;

B is optionally selected from the group consisting of hydrido, trialkylsilyl, C2-C8 alkyl, C3-C8 alkylenyl, C3-C8 alkenyl, C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group B is optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶;

B is optionally a C3-C12 cycloalkyl or C4-C9 saturated heterocyclyl, wherein each ring carbon is optionally substituted with R³³, a ring carbon other than the ring carbon at the point of attachment of B to A is optionally substituted with oxo provided that no more than one ring carbon is substituted by oxo at the same time, ring carbons and a nitrogen adjacent to the carbon atom at the point of attachment are optionally substituted with R⁹ or R¹³, a ring carbon or nitrogen atom adjacent to the R⁹ position and two atoms from the point of attachment is optionally substituted with R¹⁰, a ring carbon or nitrogen adjacent to the R¹³ position and two atoms from the point of attachment is optionally substituted with R¹², a ring carbon or nitrogen three atoms from the point of attachment and adjacent to the R¹⁰ position is optionally substituted with R¹¹, a ring carbon or nitrogen three atoms from the point of attachment and adjacent to the R¹² position is optionally substituted with R³³, and a ring carbon or nitrogen four atoms from the point of attachment and adjacent to the R¹¹ and R³³ positions is optionally substituted with R³⁴;

A is selected from the group consisting of single covalent bond, (W⁷)_rr—(CH(R¹⁵))_pa and (CH(R¹⁵))_pa—(W⁷)_rr wherein rr is 0 or 1, pa is an integer selected from 0 through 6, and W⁷ is selected from the group consisting of O, S, C(O), (R⁷)NC(O), (R⁷)NC(S), and N(R⁷) with the proviso that no more than one of the group consisting of rr and pa is 0 at the same time;

R⁷ is selected from the group consisting of hydrido, hydroxy, and alkyl;

R¹⁵ is selected from the group consisting of hydrido, hydroxy, halo, alkyl, and haloalkyl;

Ψ is NH or NOH;

R¹ is selected from the group consisting of hydrido, alkyl, alkenyl, cyano, halo, haloalkyl, haloalkoxy, haloalkylthio, amino, aminoalkyl, alkylamino, amidino, hydroxy, hydroxyamino, alkoxy, hydroxyalkyl, alkoxyamino, thiol, and alkylthio;

R² is Z⁰-Q;

Z⁰ is selected from the group consisting of covalent single bond, (CR⁴¹R⁴²)_q wherein q is an integer selected from 1 through 3, (CH(R⁴¹))_g—W⁰—(CH(R⁴²))_p wherein g and p are integers independently selected from 0 through 3 and W⁰ is selected from the group consisting of O, S, C(O), S(O), N(R⁴¹), and ON(R⁴¹);

Z⁰ is optionally (CH(R⁴¹))_e—W²²—(CH(R⁴²))_h wherein e and h are independently 0 or 1 and W²² is selected from the group consisting of CR⁴¹′CR⁴², 1,2-cyclopropyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, and 3,4-tetrahydrofuranyl, wherein Z⁰ is directly bonded to the pyrazinone ring and W²² is optionally substituted with one or more substituents selected from the group consisting of R⁹, R¹⁰, R¹¹, R¹², and R¹³;

R⁴¹ and R⁴² are independently selected from the group consisting of amidino, hydroxyamino, hydrido, hydroxy, amino, and alkyl;

Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a nitrogen with a removable hydrogen or a carbon adjacent to the carbon at the point of attachment is optionally substituted by R⁹, a nitrogen with a removable hydrogen or a carbon at the other position adjacent to the point of attachment is optionally substituted by R¹³, a nitrogen with a removable hydrogen or a carbon adjacent to R⁹ and two atoms from the point of attachment is optionally substituted by R¹⁰, a nitrogen with a removable hydrogen or a carbon adjacent to R¹³ and two atoms from the point of attachment is optionally substituted by R¹², and a nitrogen with a removable hydrogen or a carbon adjacent to both R¹⁰ and R¹² is substituted by R¹¹;

Q is optionally hydrido with the proviso that Z⁰ is selected from other than a covalent single bond or (CR⁴¹R⁴²)_q;

K is (CR^4aR^4b)_n wherein n is 1 or 2;

R^4a and R^4b are independently selected from the group consisting of halo, hydrido, hydroxyalkyl, alkyl, alkoxyalkyl, alkylthioalkyl, and haloalkyl;

E⁰ is E¹, when K¹ is (CR^4aR^4b)_n, wherein E¹ is selected from the group consisting of a covalent single bond, C(O), C(S), C(O)N(R⁷), (R⁷)NC(O), S(O)₂, (R⁷)NS(O)₂, and S(O)₂N(R⁷);

Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one carbon of said phenyl or said heteroaryl is substituted by Q^s, a carbon two or three atoms from the point of attachment of Q^s is substituted by Q^b, a carbon adjacent to the point of attachment of Q^s is optionally substituted by R¹⁷, another carbon adjacent to the point of attachment of Q^s is optionally substituted by R¹⁸, a carbon adjacent to Q^b is optionally substituted by R¹⁶, and another carbon adjacent to Q^b is optionally substituted by R¹⁹;

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, nitro, alkoxyamino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, alkenyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, haloalkoxyalkyl, carboalkoxy, and cyano, with the provisos that R¹⁶ and R¹⁹ are independently selected from other than the group consisting of hydrido, amino, aminoalkyl, hydroxyalkyl, and alkyl, wherein Q is hydrido, Y^o is a thiazolyl or imidazolyl ring and Z^o is (CH(R⁴¹))_e—W²²—(CH(R⁴²))_h wherein W²² is a cycloalkyl and R¹⁶ and R¹⁹ are independently other than hydrido or amino wherein Q is hydrido, Y^o is a pyridyl, and Z^o is (CH(R⁴¹))_e—W²²—(CH(R⁴²))_h wherein W²² is a cycloalkyl or (CH(R⁴¹))_g—W^o—(CH(R⁴²))_p wherein W⁰ is O, S, or S(O);

R¹⁶ or R¹⁹ is optionally selected from the group consisting of NR²⁰R²¹, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the proviso that R¹⁶, R¹⁹, and Q^b are not simultaneously hydrido;

Q^b is selected from the group consisting of NR²⁰R²¹, aminoalkyl, hydrido, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the provisos that no more than one of R²⁰ and R²¹ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino at the same time and that no more than one of R²³ and R²⁴ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino at the same time, that Q^b is other than hydrido or amino wherein Q is hydrido, Y^o is thiazolyl or imidazolyl and Z^o is (CH(R⁴¹))_e—W²²—(CH(R⁴²))_h wherein W²² is a cycloalkyl, and that Q^b is other than hydrido or amino wherein Q is hydrido, Y^o is pyridyl, and Z^o is (CH(R⁴¹))_e—W²²—(CH(R⁴²))_h wherein W²² is a cycloalkyl or (CH(R⁴¹))_g—W^o—(CH(R⁴²))_p wherein W⁰ is O, S, or S(O);

R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, alkyl, hydroxy, aminoalkyl, amino, dialkylamino, alkylamino, and hydroxyalkyl;

Q^s is selected from the group consisting of a single covalent bond, (CR³⁷R³⁸)_b wherein b is an integer selected from 1 through 4, and (CH(R¹⁴))_c—W¹—(CH(R¹⁵))_d wherein c and d are integers independently selected from 1 through 3 and W¹ is selected from the group consisting of C(O)N(R¹⁴), (R¹⁴)NC(O), S(O), S(O)₂, S(O)₂N(R¹⁴),N(R¹⁴)S(O)₂, and N(R¹⁴), with the provisos that R¹⁴ is selected from other than halo when directly bonded to N, Q^s is selected from other than a single covalent bond when Y^o is 2-Q^b-5-Q^s-6-R¹⁷-4-R¹⁸-3-R¹⁹ pyridine or 2-Q^b-4-Q^s-3-R¹⁶-5-R¹⁸-6-R¹⁹ pyridine, and that (CR³⁷R³⁸)_b and (CH(R¹⁴))_c are bonded to E⁰;

R¹⁴ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl;

R³⁷ and R³⁸ are independently selected from the group consisting of hydrido, alkyl, and haloalkyl;

R³⁸ is optionally aroyl or heteroaroyl, wherein R³⁸ is optionally substituted at from one through three of the ring carbons with a substituent selected from the group consisting of R¹⁶, R¹⁷, R¹⁸, and R¹⁹;

Y⁰ is optionally Y^AT wherein Y^ATis Q^b-Q^s;

Y⁰ is optionally Q^b-Q^ss wherein Q^ss is (CH(R¹⁴))_e—W²—(CH(R¹⁵))_h, wherein e and h are independently 1 or 2 and W² is CR^4a═CR^4b with the proviso that (CH(R¹⁴))_e is bonded to E⁰;

Y⁰ is optionally selected from the group consisting of Q^b-Q^ssss and; Q^b-Q^ssssr wherein Q^ssss is (CH(R³⁸))_r—W⁵ and Q^ssssr is (CH(R³⁸))_r—W⁶, r is 1 or 2, W⁵ and W⁶ are independently selected from the group consisting of 1,4-indenyl, 1,5-indenyl, 1,6-indenyl, 1,7-indenyl, 2,7-indenyl, 2,6-indenyl, 2,5-indenyl, 2,4-indenyl, 3,4-indenyl, 3,5-indenyl, 3,6-indenyl, 3,7-indenyl, 2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl, 2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl, 3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-benzothiophenyl, 2,5-benzothiophenyl, 2,6-benzothiophenyl, 2,7-benzothiophenyl, 3,4-benzothiophenyl, 3,5-benzothiophenyl, 3,6-benzothiophenyl, 3,7-benzothiophenyl, 2,7-imidazo(1,2-a)pyridinyl, 3,4-imidazo(1,2-a)pyridinyl, 3,5-imidazo(1,2-a)pyridinyl, 3,6-imidazo(1,2-a)pyridinyl, 3,7-imidazo(1,2-a)pyridinyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl, 2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl, 1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl, 2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl, 3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl, 2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl, 2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,5-benzisoxazolyl, 3,6-benzisoxazolyl, 3,7-benzisoxazolyl, 1,4-naphthyl, 1,5-naphthyl, 1,6-naphthyl, 1,7-naphthyl, 1,8-naphthyl, 2,4-naphthyl, 2,5-naphthyl, 2,6-naphthyl, 2,7-naphthyl, 2,8-naphthyl, 2,4-quinolinyl, 2,5-quinolinyl, 2,6-quinolinyl, 2,7-quinolinyl, 2,8-quinolinyl, 3,4-quinolinyl, 3,5-quinolinyl, 3,6-quinolinyl, 3,7-quinolinyl, 3,8-quinolinyl, 4,5-quinolinyl, 4,6-quinolinyl, 4,7-quinolinyl, 4,8-quinolinyl, 1,4-isoquinolinyl, 1,5-isoquinolinyl, 1,6-isoquinolinyl, 1,7-isoquinolinyl, 1,5-isoquinolinyl, 3,4-isoquinolinyl, 3,5-isoquinolinyl, 3,6-isoquinolinyl, 3,7-isoquinolinyl, 3,8-isoquinolinyl, 4,5-isoquinolinyl, 4,6-isoquinolinyl, 4,7-isoquinolinyl, 4,8-isoquinolinyl, 3,4-cinnolinyl, 3,5-cinnolinyl, 3,6-cinnolinyl, 3,7-cinnolinyl, 3,8-cinnolinyl, 4,5-cinnolinyl, 4,6-cinnolinyl, 4,7-cinnolinyl, and 4,8-cinnolinyl, and each carbon and hyrido containing nitrogen member of the ring of the W⁵ and of the ring of the W⁶, other than the points of attachment of W⁵ and W⁶, is optionally substituted with one or more of the group consisting of R⁹, R¹⁰, R¹¹, and R¹², with the provisos that Q^b is bonded to lowest number substituent position of each W⁵, Q⁶ is bonded to highest number substituent position of each W⁶, W⁵ and W⁶ are selected from other than 2,4-benzofuranyl, 2,5-benzofuranyl, 2,6-benzofuranyl, 2,7-benzofuranyl, 3,4-benzofuranyl, 3,5-benzofuranyl, 3,6-benzofuranyl, 3,7-benzofuranyl, 2,4-indolyl, 2,5-indolyl, 2,6-indolyl, 2,7-indolyl, 3,4-indolyl, 3,5-indolyl, 3,6-indolyl, 3,7-indolyl, 1,4-isoindolyl, 1,5-isoindolyl, 1,6-isoindolyl, 2,4-isoindolyl, 2,5-isoindolyl, 2,6-isoindolyl, 2,7-isoindolyl, 1,3-isoindolyl, 3,4-indazolyl, 3,5-indazolyl, 3,6-indazolyl, 3,7-indazolyl, 2,4-benzoxazolyl, 2,5-benzoxazolyl, 2,6-benzoxazolyl, 2,7-benzoxazolyl, 3,4-benzisoxazolyl, 3,5-benzisoxazolyl, 3,6-benzisoxazolyl, and 3,7-benzisoxazolyl, when r is the integer one, and (CH(R³⁸))_r is bonded to E⁰.

In a more preferred embodiment of a compound of Formula I or a pharmaceutically acceptable salt thereof,

J is O;

B is phenyl or heteroaryl of 5 or 6 ring members, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R³²,the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R³⁶, a carbon adjacent to R³² and two atoms from the carbon at the point of attachment is optionally substituted by R³³, a carbon adjacent to R³⁶ and two atoms from the carbon at the point of attachment is optionally substituted by R³⁴, and any carbon adjacent to both R³³ and R³⁵ is optionally substituted by R³⁴;

R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkylenedioxy, haloalkylthio, alkanoyloxy, alkoxy, hydroxy, amino, alkoxyamino, alkanoyl, haloalkanoyl, nitro, alkylamino, alkylthio, aryl, aralkyl, cycloalkyl, cycloalkylalkyl heteroaryl, heterocyclyl, alkylsulfonamido, amidosulfonyl, monoalkyl amidosulfonyl, dialkyl amidosulfonyl, alkyl, alkenyl, halo, haloalkyl, haloalkenyl, haloalkoxy, hydroxyalkyl, alkylenylamino, carboalkoxy, carboxy, carboxamido, cyano, and Q^b;

B is optionally selected from the group consisting of hydrido, trialkylsilyl, C2-C8 alkyl, C3-C8 alkylenyl, C3-C8 alkenyl, C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group B is optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶;

B is optionally selected from the group consisting of C3-C12 cycloalkyl and C4-C9 saturated heterocyclyl, wherein each ring carbon is optionally optionally substituted with R³³, a ring carbon other than the ring carbon at the point of attachment of B to A is optionally substituted with oxo provided that no more than one ring carbon is substituted by oxo at the same time, ring carbon and nitrogen atoms adjacent to the carbon atom at the point of attachment is optionally substituted with R⁹ or R¹³, a ring carbon or nitrogen atom adjacent to the R⁹ position and two atoms from the point of attachment is optionally substituted with R¹⁰, a ring carbon or nitrogen atom adjacent to the R¹³ position and two atoms from the point of attachment is optionally substituted with R¹², a ring carbon or nitrogen atom three atoms from the point of attachment and adjacent to the R¹⁰ position is optionally substituted with R¹¹, a ring carbon or nitrogen atom three atoms from the point of attachment and adjacent to the R¹² position is optionally substituted with R³³, and a ring carbon or nitrogen atom four atoms from the point of attachment and adjacent to the R¹¹ and R³³ positions is optionally substituted with R³⁴;

R⁹, R¹⁰, R¹¹, R¹², and R¹³ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, alkoxyamino, alkanoyl, haloalkanoyl, amidino, guanidino, alkylenedioxy, haloalkylthio, alkoxy; hydroxy, amino, alkylamino, alkylthio, alkylsulfinyl, alkysulfonyl, alkylsulfonamido, amidosulfonyl, monoalkyl amidosulfonyl, dialkyl amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, carboalkoxy, carboxyalkyl, carboxy, carboxamido, and cyano;

A is selected from the group consisting of single covalent bond and (CH(R¹⁵))_p—(W⁷)_rr wherein rr is an integer selected from 0 through.1, pa is an integer selected from 0 through 3, and W⁷ is selected from the group consisting of O, S, C(O), (R⁷)NC(O), (R⁷)NC(S), and N(R⁷);

R⁷ is selected from the group consisting of hydrido, hydroxy and alkyl:

R¹⁵ is selected from the group consisting of hydrido, hydroxy, halo, alkyl, and haloalkyl;

Ψ is NH;

R¹ is selected from the group consisting of hydrido, alkyl, cyano, halo, haloalkyl, haloalkoxy, amino, aminoalkyl, alkylamino, amidino, hydroxy, hydroxyamino, alkoxy, hydroxyalkyl, alkoxyamino, thiol, and alkylthio;

R² is Z⁰-Q;

Z⁰ is selected from the group consisting of covalent single bond and (CR⁴¹R⁴²)_q wherein q is an integer selected from 1 through 2, (CH(R⁴¹))_g—W⁰—(CH(R⁴²))_p wherein g and p are integers independently selected from 0 through 3 and W⁰ is selected from the group consisting of O, S, and N(R⁴¹), and (CH(R⁴¹))_e—W²²—(CH(R⁴²))_h wherein e and h are integers independently selected from 0 through 1 and W²² is selected from the group consisting of CR⁴¹′CR⁴², 1,2-cyclopropyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl and 3,4-tetrahydrofuranyl, with the proviso that Z⁰ is directly bonded to the pyrazinone ring;

R⁴¹ and R⁴² are independently selected from the group consisting of hydrido, hydroxy, and amino;

Q is selected from the group consisting of hydrido, with the proviso that Z⁰ is other than a covalent single bond, aryl, and heteroaryl, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R⁹, the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R¹³, a carbon adjacent to R⁹ and two atoms from the carbon at the point of attachment is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and two atoms from the carbon at the point of attachment is optionally substituted by R¹², and any carbon adjacent to both R¹⁰ and R¹² is optionally substituted by R¹¹;

K is CHR^4a wherein R^4a is selected from the group consisting of hydrido, hydroxyalkyl, alkyl, alkoxyalkyl, alkylthioalkyl, and haloalkyl;

E⁰ is selected from the group consisting of a covalent single bond, C(O)N(H), (H)NC(O), (R⁷)NS(O)₂, and S(O)₂N(R⁷);

Y⁰ is formula (IV): wherein D⁵, D⁶, J⁵, and J⁶ are independently selected from the group consisting of C, N, O, S and a covalent bond with the provisos that no more than one is a covalent bond, K² is C, no more than one of D⁵, D⁶, J⁵, and J⁶ is O, no more than one of D⁵, D⁶, J⁵, and J⁶ is S, one of D⁵, D⁶, J⁵, and J⁶ must be a covalent bond when two of D⁵, D⁶, J⁵, and J⁶ are O and S, and no more than four of D⁵, D⁶, J⁵, and J⁶ are N, with the provisos that R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are each independently selected to maintain the tetravalent nature of carbon, trivalent nature of nitrogen, the divalent nature of sulfur, and the divalent nature of oxygen and that D⁵, D⁶, J⁵, and J⁶ D, are selected to maintain an aromatic ring system;

R²⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano;

R¹⁶ or R¹⁹ is optionally selected from the group consisting of NR²⁰R²¹, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴) and C(NR²⁵)NR²³R²⁴, with the proviso that R¹⁶, R¹⁹, and Q^b are not simultaneously hydrido;

Q^b is selected from the group consisting of NR²⁰R²¹, hydrido, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the provisos that no more than one of R²⁰ and R²¹ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino at the same time and that no more than one of R²³ and R²⁴ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino at the same time; R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, alkyl, hydroxy, amino, alkylamino and dialkylamino:

Q^s is selected from the group consisting of a single covalent bond, (CR³⁷R³⁸)_b wherein b is an integer selected from 1 through 4, and (CH(R¹⁴))_c—W¹—(CH(R¹⁵))d wherein c and d are integers independently selected from 1 through 3 and W¹ is selected from the group consisting of C(O)N(R¹⁴), (R¹⁴)NC(O), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, and N(R¹⁴), with the provisos that R¹⁴ is selected from other than halo when directly bonded to N and that (CR³⁷R³⁸)_b, and (CH(R¹⁴))_c are bonded to E⁰;

R¹⁴ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl;

R³⁷and R³⁸ are independently selected from the group consisting of hydrido, alkyl, and haloalkyl;

R³⁸ is optionally selected from the group consisting of aroyl and heteroaroyl;

Y⁰ is optionally Q^b-Q^ss wherein Q²² is (CH(R¹⁴))_e—W²—(CH(R¹⁵))_h, wherein e and h are integers independently selected from 1 through 2 and W² is CR^4a═CH with the proviso that (CH(R¹⁴))_e is bonded to E⁰.

In a another preferred embodiment of a compound of Formula I, said compound is the Formula: or a pharmaceutically acceptable salt thereof, wherein;

B is phenyl or a heteroaryl of 5 or 6 ring members, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R³², the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R³⁶, a carbon adjacent to R³² and two atoms from the carbon at the point of attachment is optionally substituted by R³³, a carbon adjacent to R³⁶ and two atoms from the carbon at the point of attachment is optionally substituted by R³⁵, and any carbon adjacent to both R³³ and R³⁵ is optionally substituted by R³⁴;

R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkylenedioxy, haloalkylthio, alkanoyloxy, alkoxy, hydroxy, amino, alkoxyamino, haloalkanoyl, nitro, alkylamino, alkylthio, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, alkylsulfonamido, amidosulfonyl, alkyl, alkenyl, halo, haloalkyl, haloalkenyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy, carboxamido, cyano, and Q^b;

B is optionally selected from the group consisting of hydrido, trialkylsilyl, C2-C8 alkyl, C3-C8 alkylenyl, C3-C8 alkenyl, C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group B is optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶;

B is optionally a C3-C12 cycloalkyl or a C4-C9 saturated heterocyclyl, wherein each ring carbon is optionally substituted with R³³, a ring carbon other than the ring carbon at the point of attachment of B to A is optionally substituted with oxo provided that no more than one ring carbon is substituted by oxo at the same time, ring carbons and a nitrogen adjacent to the carbon atom at the point of attachment are optionally substituted with R⁹ or R¹³, a ring carbon or nitrogen atom adjacent to the R⁹ position and two atoms from the point of attachment is optionally substituted with R¹⁰, a ring carbon or nitrogen atom adjacent to the R¹³ position and two atoms from the point of attachment is optionally substituted with R¹², a ring carbon or nitrogen atom three atoms from the point of attachment and adjacent to the R¹⁰ position is optionally substituted with R¹¹, a ring carbon or nitrogen atom three atoms from the point of attachment and adjacent to the R¹² position is optionally substituted with R³³, and a ring carbon or nitrogen atom four atoms from the point of attachment and adjacent to the R¹¹ and R³³ positions is optionally substituted with R³⁴;

R⁹, R¹⁰, R¹¹, R¹², and R¹³ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, alkoxyamino, alkanoyl, haloalkanoyl, amidino, guanidino, alkylenedioxy, haloalkylthio, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy, amino, alkylamino, N-alkyl-N-arylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, alkylthio, alkylsulfinyl, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, alkylsulfonamido, alkylsulfonyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, amidosulfonyl, alkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy, carboxyalkyl, carboxamido, and cyano;

A is a single covalent bond or (CH(R¹⁵))_pa—(W⁷)_rrwherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is selected from the group consisting of O, S, C(O), (R⁷)NC(O), (R⁷)NC(S), and N(R⁷);

R⁷ is selected from the group consisting of hydrido, hydroxy and alkyl

R¹⁵ is selected from the group consisting of hydrido, hydroxy, halo, alkyl, and haloalkyl;

R¹ is selected from the group consisting of hydrido, alkyl, cyano, halo, haloalkyl, haloalkoxy, amino, aminoalkyl, alkylamino, amidino, hydroxy, hydroxyamino, alkoxy, hydroxyalkyl, alkoxyamino, thiol, and alkylthio;

R² is Z⁰-Q;

Z⁰ is selected from the group consisting of covalent single bond, (CR⁴¹R^{42 )}_q wherein q is 1 or 2, (CH(R⁴¹))_g—W⁰—(CH(R⁴²))_p wherein g and p are integers independently selected from 0 through 3 and W⁰ is selected from the group consisting of O, S, C(O), S(O), N(R⁴¹), and ON(R⁴¹);

Z⁰ is optionally (CH(R⁴¹))_e—W²²—(CH(R⁴²))_h wherein e and h are independently 0 or 1 and W²² is selected from the group consisting of CR⁴¹CR⁴², 1,2-cyclopropyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 2,3-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, and 3,4-tetrahydrofuranyl, wherein Z⁰ is directly bonded to the pyrazinone ring and W²² is optionally substituted with one or more substituents selected from the group consisting of R⁹, R¹⁰, R¹¹, R¹², and R¹³;

R⁴¹ and R⁴² are independently selected from the group consisting of hydrido, hydroxy, and amino;

Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R⁹, the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R¹³, a carbon adjacent to R⁹ and two atoms from the carbon at the point of attachment is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and two atoms from the carbon at the point of attachment is optionally substituted by R¹², and any carbon adjacent to both R¹⁰ and R¹² is optionally substituted by R¹¹;

Q is optionally hydrido with the proviso that Z⁰ is other than a covalent single bond or (CR⁴¹R⁴²)_q;

K is CHR^4a wherein R^4a is selected from the group consisting of hydrido, hydroxyalkyl, alkyl, alkoxyalkyl, alkylthioalkyl, and haloalkyl;

E⁰ is selected from the group consisting of a covalent single bond, C(O)N(H), (H)NC(O), (R⁷)NS(O)₂, and S(O)₂N(R⁷);

Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one carbon of said phenyl or said heteroaryl is substituted by Q^s, a carbon two or three contiguous atoms from the point of attachment of Q² is substituted by Q^b, a carbon adjacent to the point of attachment of Q^s is optionally substituted by R¹⁷, another carbon adjacent to the point of attachment of Q^s is optionally substituted by R¹⁸, a carbon adjacent to Q^b is optionally substituted by R¹⁶, and another carbon adjacent to Q^b is optionally substituted by R¹⁹;

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano, with the provisos that R¹⁶ and R¹⁹ are independently selected from other than the group consisting of hydrido, amino, aminoalkyl, hydroxyalkyl, and alkyl wherein Q is hydrido, Y^o is thiazolyl or imidazolyl and Z^o is (CH(R⁴¹))_e—W²²—(CH(R⁴²))_h wherein W²² is a cycloalkyl and R¹⁶ and R¹⁹ are independently other than hydrido or amino wherein Q is hydrido, Y^o is pyridyl, and Z^o is (CH(R⁴¹))_e—W²²—(CH(R⁴²))_h wherein W²² is a cycloalkyl or (CH(R⁴¹))_g—W⁰—(CH(R⁴²))_p wherein W⁰ is O, S, or S(O);

R¹⁶ or R¹⁹ is optionally selected from the group consisting of NR²⁰R²¹, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the proviso that R¹⁶, R¹⁹, and Q^b are not simultaneously hydrido;

Q^b is selected from the group consisting of NR²⁰R²¹, hydrido, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the provisos that no more than one of R²⁰ and R²¹ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino at the same time, that no more than one of R²³ and R²⁴ is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino at the same time, that Q^b is other than hydrido or amino wherein Q is hydrido. Y^o i s thiazolyl or imidazolyl and Z^o is (CH(R⁴¹))_e—W²²—(CH(R^{42 ))}_h wherein W²² is a cycloalkyl, and that Q^b is other than hydrido or amino wherein Q is hydrido, Y^o is pyridyl, and Z^o is (CH(R⁴¹))_e—W²²—(CH(R⁴²)_h wherein W²² is cycloalkyl or (CH(R⁴¹))_g—W^o—(CH(R⁴²))_p wherein W⁰ is O, S, or S(O);

R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, alkyl, hydroxy, amino, alkylamino and dialkylamino;

Q^s is selected from the group consisting of a single covalent bond, (CR³⁷R³⁸)_b wherein b is an integer selected from 1 through 4, and (CH(R¹⁴))_c—W¹—(CH(R¹⁵))_d wherein c and d are integers independently selected from 1 through 3 and W¹ is selected from the group consisting of C(O)N(R¹⁴), (R¹⁴)NC(O), S(O), S(O)₂, S(O)₂N(R¹⁴), N(R¹⁴)S(O)₂, and N(R¹⁴), with the provisos that R¹⁴ is selected from other than halo when directly bonded to N, Q^s is selected from other than a single covalent bond when Y^o is 2-Q^b-5-Q^s-6-R¹⁷-4-R¹⁸-3-R¹⁹ pyridine or 2-Q^b-4-Q^s-3-R¹⁶-5-R¹⁸-6-R¹⁹ pyridine, and that (CR³⁷R³⁸)_b and (CR³⁷R³⁸)_b, and (CH(R¹⁴))_c are bonded to E⁰;

R¹⁴ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl;

R³⁷ and R³⁸ are independently selected from the group consisting of hydrido, alkyl, and haloalkyl;

R³⁸ is optionally aroyl or heteroaroyl, wherein R³⁸ is optionally substituted at from one through three of the ring carbons with a substituent selected from the group consisting of R¹⁶, R¹⁷, R¹⁸, and R¹⁹;

Y⁰ is optionally Y^AT wherein Y^AT is Q^b-Q^s;

Y⁰ is optionally Q^b-Q^ss wherein Q^ss is (CH(R¹⁴))_e—W²-(CH(R¹⁵))_h, wherein e and h are independently 1 or 2 and W² is CR^4a═CH with the proviso that (CH(R¹⁴))_e is bonded to E⁰;

In an even more preferred embodiment of a compound of Formula I, said compound is the Formula: or a pharmaceutically acceptable salt thereof, wherein;

B is phenyl or heteroaryl of 5 or 6 members, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R³², the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R³⁶, a carbon adjacent to R³² and two atoms from the carbon at the point of attachment is optionally substituted by R³³, a carbon adjacent to R³⁶ and two atoms from the carbon at the point of attachment is optionally substituted by R³⁵, and any carbon adjacent to both R³³ and R³⁵ is optionally substituted by R³⁴;

R³², R³³, R³⁴, R³⁵ and R³⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboalkoxy, carboxy, carboxamido, cyano, and Q^b;

A is a single covalent bond or (CH(R¹⁵))_pa—(W⁷)_rrwherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is (R⁷)NC(O) or N(R⁷);

R⁷ is selected from the group consisting of hydrido, hydroxy and alkyl;

R¹⁵ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl;

R¹ is selected from the group consisting of hydrido, hydroxy, hydroxyamino, amidino, amino, cyano, hydroxyalkyl, alkoxy, alkyl, alkylamino, aminoalkyl, alkylthio, alkoxyamino, haloalkyl, haloalkoxy, and halo;

R² is Z⁰-Q;

Z⁰ is selected from the group consisting of a covalent single bond, CH₂, CH₂CH₂, W⁰—(CH(R⁴²))_p wherein p is 0 or 1 and W⁰ is selected from the group consisting of O, S, and N(R⁴¹);

R⁴¹ and R⁴² are independently hydrido or alkyl;

Q is selected from the group consisting of aryl and heteroaryl wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R⁹, the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R¹³, a carbon adjacent to R⁹ and two atoms from the carbon at the point of attachment is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and two atoms from the carbon at the point of attachment is optionally substituted by R¹², and any carbon adjacent to both R¹⁰ and R¹² is optionally substituted by R¹¹;

R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, hydroxy, amino, amidino, guanidino, alkylamino, alkylthio, alkylsulfonamido, alkylsulfinyl, alkylsulfonyl, amidosulfonyl, alkyl, alkoxy, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboxy, carboxamido, and cyano:

R¹⁰ and R¹² are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy, amino, alkoxyamino, alkylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, alkylsulfonamido, amidosulfonyl, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy, carboxyalkyl, carboxamido, halo, haloalkyl, and cyano;

Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one carbon of said phenyl or said heteroaryl is substituted by Q^s, a carbon two or three contiguous atoms from the point of attachment of Q² is substituted by Q^b, a carbon adjacent to the point of attachment of Q^s is optionally substituted by R¹⁷, another carbon adjacent to the point of attachment of Q^s is optionally substituted by R¹⁸, a carbon adjacent to Q^b is optionally substituted by R¹⁶, and another carbon adjacent to Q^b is optionally substituted by R¹⁹;

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl; haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano;

R¹⁶ or R¹⁹ is optionally NR²⁰R²¹ or C(NR²⁵)NR²³R²⁴, with the proviso that R¹⁶, R¹⁹, and Q^b are not simultaneously hydrido;

Q^b is selected from the group consisting of NR²⁰R²¹, hydrido, and C(NR²⁵)NR²³R²⁴, with the provisos that no more than one of R²⁰ and R²¹ is hydroxy at the same time and that no more than one of R²⁰ and R²¹ is hydroxy at the same time;

R²⁰, R²¹, R²³, R²⁴, and R²⁵ are independently selected from the group consisting of hydrido, alkyl, and hydroxy;

Q^s is selected from the group consisting of a single covalent bond, CH₂, and CH₂CH₂.

In another even more preferred embodiment of a compound of Formula I, said compound is the Formula: or a pharmaceutically acceptable salt thereof, wherein,

B is selected from the group consisting of hydrido, C2-C8 alkyl, C3-C8 alkenyl, C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group B is optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R³² R³³, R³⁴, R³⁵, and R³⁶;

R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboalkoxy, carboxy, carboxamido, cyano, and Q^b;

A is a single covalent bond or (CH(R¹⁵))_pa—(W⁷)_rrwherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is (R⁷)NC(O) or N(R⁷);

R⁷ is selected from the group consisting of hydrido, hydroxy and alkyl;

R¹⁵ is selected from the group consisting, of hydrido, halo, alkyl, and haloalkyl;

R¹ is selected from the group consisting of hydrido, hydroxy, hydroxyamino, amidino, amino, cyano, hydroxyalkyl, alkoxy, alkyl, alkylamino, aminoalkyl, alkylthio, alkoxyamino, haloalkyl, haloalkoxy, and halo;

R² is Z⁰-Q;

Z⁰ is selected from the group consisting of a covalent single bond, CH₂, CH₂CH₂, W⁰—(CH(R⁴²))_p wherein p is 0 or 1 and W⁰ is selected from the group consisting of O, S, and N(R⁴¹);

R⁴¹ and R⁴² are independently hydrido or alkyl;

Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R⁹, the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R¹³, a carbon adjacent to R⁹ and two atoms from the carbon at the point of attachment is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and two atoms from the carbon at the point of attachment is optionally substituted by R¹² and any carbon adjacent to both R¹⁰ and R¹² is optionally substituted by R¹¹;

R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, hydroxy, amino, amidino, guanidino, alkylamino, alkylthio, alkylsulfonamido, alkylsulfinyl, alkylsulfonyl, amidosulfonyl, alkyl, alkoxy, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboxy, carboxamido, and cyano;

R¹⁰ and R¹² are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy, amino, alkoxyamino, alkylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, alkylsulfonamido, amidosulfonyl, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy, carboxyalkyl, carboxamido, halo, haloalkyl, and cyano;

Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one carbon of said phenyl or said heteroaryl is substituted by Q^s, a carbon two or three contiguous atoms from the point of attachment of Q^s is substituted by Q^b, a carbon adjacent to the point of attachment of Q^s is optionally substituted by R¹⁷, another carbon adjacent to the point of attachment of Q^s is optionally substituted by R¹⁸, a carbon adjacent to Q^b is optionally substituted by R¹⁶, and another carbon adjacent to Q^b is optionally substituted by R¹⁹;

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano;

R¹⁶ or R¹⁹ is optionally selected from the group consisting of NR²⁰R²¹, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴) and C(NR²⁵)NR²³R²⁴, with the proviso that R¹⁶, R¹⁹, and Q^b are not simultaneously hydrido;

Q^b is selected from the group consisting of NR²⁰R²¹, hydrido, C(NR²⁵)NR²³R²⁴,and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), with the provisos that no more than one of R²⁰ and R²¹ is hydroxy at the same time and that no more than one of R²³ and R²⁴ is hydroxy at the same time;

R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, alkyl, and hydroxy;

Q^s is selected from the group consisting of a single covalent bond, CH₂, and CH₂CH₂.

In still another even more preferred embodiment of a compound of Formula I, said compound is the Formula: or a pharmaceutically acceptable salt thereof, wherein;

B is a C3-C7 cycloalkyl or a C4-C6 saturated heterocyclyl, wherein each ring carbon is optionally substituted with R³³, a ring carbon other than the ring carbon at the point of attachment of B to A is optionally substituted with oxo provided that no more than one ring carbon is substituted by oxo at the same time, ring carbons and a nitrogen adjacent to the carbon atom at the point of attachment are optionally substituted with R¹⁹ or R¹³, a ring carbon or nitrogen adjacent to the R⁹ position and two atoms from the point of attachment is optionally substituted with R¹⁰, a ring carbon or nitrogen adjacent to the R¹³ position and two atoms from the point of attachment is optionally substituted with R¹², a ring carbon or nitrogen three atoms from the point of attachment and adjacent to the R¹⁰ position is optionally substituted with R¹¹, a ring carbon or nitrogen three atoms from the point of attachment and adjacent to the R¹² position is optionally substituted with R³³, and a ring carbon or nitrogen four atoms from the point of attachment and adjacent to the R¹¹ and R³³ positions is optionally substituted with R³⁴;

R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, hydroxy, amino, amidino, guanidino, alkylamino, alkylthio, alkylsulfonamido, alkylsulfinyl, alkylsulfonyl, amidosulfonyl, alkyl, alkoxy, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboxy, carboxamido, and cyano;

R¹⁰ and R¹² are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy, amino, alkoxyamino, alkylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, alkylsulfonamido, amidosulfonyl, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy, carboxyalkyl, carboxamido, halo, haloalkyl, and cyano;

R³³ and R³⁴ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboalkoxy, carboxy, carboxamido, and cyano;

R³³ is optionally Q^b;

A is a single covalent bond or (CH(R¹⁵))_pa—(W⁷)_rr wherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is (R⁷)NC(O) or N(R⁷);

R⁷ is selected from the group consisting of hydrido, hydroxy and alkyl;

R¹⁵ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl;

R¹ is selected from the group consisting of hydrido, hydroxy, hydroxyamino, amidino, amino, cyano, hydroxyalkyl, alkoxy, alkyl, alkylamino, aminoalkyl, alkylthio, alkoxyamino, haloalkyl, haloalkoxy, and halo;

R² is Z⁰-Q;

Z⁰ is selected from the group consisting of a covalent single bond, CH₂, CH₂CH₂, W⁰—(CH(R⁴²))_p wherein p is 0 or 1 and W⁰ is selected from the group consisting of O, S, and N(R⁴¹);

R⁴¹ and R⁴² are independently hydrido or alkyl;

Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R⁹, the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R¹³, a carbon adjacent to R⁹ and two atoms from the carbon at the point of attachment is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and two atoms from the carbon at the point of attachment is optionally substituted by R¹², and any carbon adjacent to both R¹⁰ and R¹² is optionally substituted by R¹¹;

Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one carbon of said phenyl or said heteroaryl is substituted by Q^s, a carbon two or three contiguous atoms from the point of attachment of Q^s is substituted by Q^b, a carbon adjacent to the point of attachment of Q^s is optionally substituted by R¹⁷, another carbon adjacent to the point of attachment of Q^s is optionally substituted by R¹⁸, a carbon adjacent to Q^b is optionally substituted by R¹⁶; and another carbon adjacent to Q^b is optionally substituted by R¹⁹;

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano;

R¹⁶ or R¹⁹ is optionally NR²⁰R²¹ or and C(NR²⁵)NR²³R²⁴, with the proviso that R¹⁶, R¹⁹, and Q^b are not simultaneously hydrido;

Q^b is selected from the group consisting of NR²⁰R²¹, hydrido, and C(NR²⁵)NR²³R²⁴, with the provisos that no more than one of R²⁰ and R²¹ is hydroxy at the same time and that no more than one of R²³ and R²⁴ is hydroxy at the same time;

R²⁰, R²¹, R²³, R²⁴, and R²⁵ are independently selected from the group consisting of hydrido, alkyl, and hydroxy;

Q^s is selected from the group consisting of a single covalent bond, CH₂, and CH₂CH₂.

In still a further even more preferred embodiment of a compound of Formula I, said compound is the Formula: or a pharmaceutically acceptable salt thereof, wherein;

B is phenyl or a heteroaryl of 5 or 6 ring members, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R³², the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R³⁶, a carbon adjacent to R³² and two atoms from the carbon at the point of attachment is optionally substituted by R³³, a carbon adjacent to R³⁶ and two atoms from the carbon at the point of attachment is optionally substituted by R³⁵, and any carbon adjacent to both R³³ and R³⁵ is optionally substituted by R³⁴;

R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkylenedioxy, haloalkylthio, alkanoyloxy, alkoxy, hydroxy, amino, alkoxyamino, haloalkanoyl, nitro, alkylamino, alkylthio, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, alkylsulfonamido, amidosulfonyl, alkyl, alkenyl, halo, haloalkyl, haloalkenyl, haloalkoxy, hydroxyalkyl, alkylamino, carboalkoxy, carboxy, carboxamido, cyano, and Q^b;

B is optionally selected from the group consisting of hydrido, trialkylsilyl, C2-C8 alkyl, C3-C8 alkylenyl, C3-C8 alkenyl, C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group B is optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶;

B is optionally a C3-C12 cycloalkyl or a C4-C9 saturated heterocyclyl, wherein each ring carbon is optionally substituted with R³³ a ring carbon other than the ring carbon at the point of attachment of B to A is optionally substituted with oxo provided that no more than one ring carbon is substituted by oxo at the same time, ring carbons and a nitrogen adjacent to the carbon atom at the point of attachment are optionally substituted with R⁹ or R¹³, a ring carbon or nitrogen adjacent to the R⁹ position and two atoms from the point of attachment is optionally substituted with R¹⁰, a ring carbon or nitrogen adjacent to the R¹³ position and two atoms from the point of attachment is optionally substituted with R¹², a ring carbon or nitrogen three atoms from the point of attachment and adjacent to the R¹⁰ position is optionally substituted with R¹¹, a ring carbon or nitrogen three atoms from the point of attachment and adjacent to the R¹² position is optionally substituted with R³³, and a ring carbon or nitrogen four atoms from the point of attachment and adjacent to the R¹¹ and R³³ positions is optionally substituted with R³⁴;

R⁹, R¹⁰, R¹¹, R¹², and R¹³ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, alkoxyamino, alkanoyl, haloalkanoyl, amidino, guanidino, alkylenedioxy, haloalkylthio, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy, amino, alkylamino, N-alkyl-N-arylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, alkylthio, alkylsulfinyl, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, alkylsulfonamido, alkylsulfonyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, amidosulfonyl, alkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy, carboxyalkyl, carboxamido, and cyano;

A is a single covalent bond or (CH(R¹⁵))_pa—(W⁷)_rr wherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is selected from the group consisting of O, S, C(O), (R⁷)NC(O), (R⁷)NC(S), and N(R⁷);

R⁷ is selected from the group consisting of hydrido, hydroxy and alkyl;

R¹⁵ is selected from the group consisting of hydrido, hydroxy, halo, alkyl, and haloalkyl;

R¹ is selected from the group consisting of hydrido, alkyl, cyano, halo, haloalkyl, haloalkoxy, amino, aminoalkyl, alkylamino, amidino, hydroxy, hydroxyamino, alkoxy, hydroxyalkyl, alkoxyamino, thiol, and alkylthio;

R² is Z⁰-Q;

Z⁰ is selected from the group consisting of covalent single bond, (CR⁴¹R⁴²)_q wherein q is 1 or 2, (CH(R⁴¹))_g—W⁰—(CH(R⁴²))_p wherein g and p are integers independently selected from 0 through 3 and W⁰is selected from the group consisting of O, S, C(O), S(O), N(R⁴¹), and ON(R⁴¹);

Z⁰ is optionally (CH(R⁴¹))_e—W²²—(CH(R⁴²))_h wherein e and h are independently 0 or 1 and W²² is selected from the group consisting of CR⁴¹═CR⁴², 1,2-cyclopropyl, 1,2-cyclobutyl, 1,2-cyclohexyl, 1,3-cyclohexyl, 1,2-cyclopentyl, 1,3-cyclopentyl, 2,3-morpholinyl, 2,4-morpholinyl, 2,6-morpholinyl, 3,4-morpholinyl, 3,5-morpholinyl, 1,2-piperazinyl, 1,3-piperazinyl, 2,3-piperazinyl, 2,6-piperazinyl, 1,2-piperidinyl, 1,3-piperidinyl, 23-piperidinyl, 2,4-piperidinyl, 2,6-piperidinyl, 3,4-piperidinyl, 1,2-pyrrolidinyl, 1,3-pyrrolidinyl, 2,3-pyrrolidinyl, 2,4-pyrrolidinyl, 2,5-pyrrolidinyl, 3,4-pyrrolidinyl, 2,3-tetrahydrofuranyl, 2,4-tetrahydrofuranyl, 2,5-tetrahydrofuranyl, and 3,4-tetrahydrofuranyl, wherein Z⁰ is directly bonded to the pyrazinone ring and

W²² is optionally substituted with one or more substituents selected from the group consisting of R⁹, R¹⁰, R¹¹, R¹², and R¹³;

R⁴¹ and R⁴² are independently selected from the group consisting of hydrido, hydroxy, and amino;

Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R⁹, the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R¹³, a carbon adjacent to R⁹ and two atoms from the carbon at the point of attachment is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and two atoms from the carbon at the point of attachment is optionally substituted by R¹², and any carbon adjacent to both R¹⁰ and R¹² is optionally substituted by R¹¹;

Q is optionally hydrido with the proviso that Z⁰ is other than a covalent single bond;

K is CHR^4a wherein R^4a is selected from the group consisting of hydrido, hydroxyalkyl, alkyl, alkoxyalkyl, alkylthioalkyl, and haloalkyl;

E⁰ is selected from the group consisting of a covalent single bond, C(O)N(H), (H)NC(O), (R⁷)NS(O)₂, and S(O)₂N(R⁷);

Q^s is (CR³⁷R³⁸)_b wherein b is an integer selected from 1 through 4, R³⁷ is selected from the group consisting of hydrido, alkyl, and haloalkyl, and R³⁸ is selected from the group consisting of hydrido, alkyl, haloalkyl, aroyl, and heteroaroyl with the provisos that there is at least one aroyl or heteroaroyl substituent, that no more than one aroyl or heteroaroyl is bonded to (CR³⁷R³⁸)_b at the same time, that said aroyl and said heteroaroyl are optionally substituted at from one through three of the ring carbons with a substituent selected from the group consisting of R¹⁶, R¹⁷, R¹⁸, and R¹⁹, that said aroyl and said heteroaroyl are bonded to the CR³⁷R³⁸ that is directly bonded to E⁰, that no more than one alkyl or one haloalkyl is bonded to a CR³⁷R³⁸ at the same time, and that said alkyl and haloalkyl are bonded to a carbon other than the one bonding said aroyl or said heteroaroyl;

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano;

R¹⁶ or R¹⁹ is optionally selected from the group consisting of NR²⁰R²¹, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the proviso that R¹⁶, R¹⁹, and Q^b are not simultaneously hydrido;

Q^b is selected from the group consisting of NR²⁰R²¹, hydrido, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the provisos that no more than one of R²⁰ and R²¹ is hydroxy, amino, alkylamino, or dialkylamino at the same time and that no more than one of R²³ and R²⁴ is hydroxy, amino, alkylamino, or dialkylamino at the same time;

R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, alkyl, hydroxy, amino, alkylamino and dialkylamino.

In a most preferred embodiment of a compound of Formula I, said compound is the Formula: or a pharmaceutically acceptable salt thereof, wherein;

B is phenyl or a heteroaryl of 5 or 6 ring members, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R³², the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R³⁶, a carbon adjacent to R³² and two atoms from the carbon at the point of attachment is optionally substituted by R³³, a carbon adjacent to R³⁶ and two atoms from the carbon at the point of attachment is optionally substituted by R³⁵, and any carbon adjacent to both R³³ and R³⁵ is optionally substituted by R³⁴;

R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, carboalkoxy, carboxy, carboxamido, cyano, and Q^b;

A is a single covalent bond or (CH(R¹⁵))_pa—(W⁷)_rr wherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is N(R⁷);

R⁷ is hydrido or alkyl;

R¹⁵ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl;

R¹ is selected from the group consisting of hydrido, hydroxy, hydroxyamino, amidino, amino, cyano, hydroxyalkyl, alkoxy, alkyl, alkylamino, aminoalkyl, alkylthio, alkoxyamino, haloalkyl, haloalkoxy, and halo;

R² is Z⁰-Q;

Z⁰ is a covalent single bond;

Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R⁹, the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R¹³, a carbon adjacent to R⁹ and two atoms from the carbon at the point of attachment is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and two atoms from the carbon at the point of attachment is optionally substituted by R¹², and any carbon adjacent to both R¹⁰ and R¹² is optionally substituted by R¹¹;

R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, hydroxy, amino, amidino, guanidino, alkylamino, alkylthio, alkoxy, alkylsulfinyl, alkylsulfonyl, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, carboxy, carboxamido, and cyano;

R¹⁰ and R¹² are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl, alkoxy, alkoxyamino, hydroxy, amino, alkylamino, alkylsulfonamido, amidosulfonyl, hydroxyalkyl, aminoalkyl, halo, haloalkyl, carboalkoxy, carboxy, carboxamido, carboxyalkyl, and cyano;

R¹⁰ and R¹² are optionally independently selected from the group consisting of hydrido, amidino, guanidino, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy, amino, alkoxyamino, alkylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, hydroxyalkyl, and aminoalkyl;

Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one carbon of said phenyl or said heteroaryl is substituted by Q^s, a carbon two or three contiguous atoms from the point of attachment of Q^s is substituted by Q^b, a carbon adjacent to the point of attachment of Q^s is optionally substituted by R¹⁷, another carbon adjacent to the point of attachment of Q^s is optionally substituted by R¹⁸, a carbon adjacent to Q^b is optionally substituted by R¹⁶, and another carbon adjacent to Q^b is optionally substituted by R¹⁹;

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano;

R¹⁶ or R¹⁹ is optionally NR²⁰R²¹ or C(NR²⁵)NR²³R²⁴, with the proviso that R¹⁶, R¹⁹, and Q^b are not simultaneously hydrido;

Q^b is selected from the group consisting of NR²⁰R²¹, hydrido, and C(NR²⁵)NR²³R²⁴;

R²⁰, R²¹, R²³, R²⁴, and R²⁵ are independently hydrido or alkyl;

Q^s is CH₂.

In another most preferred embodiment of a compound of Formula I, said compound is the Formula: or a pharmaceutically acceptable salt thereof, wherein;

B is selected from the group consisting of hydrido, C2-C8 alkyl, C3-C8 alkenyl, C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group B is optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶;

R³², R³³, R³⁴, R³⁵, and R²⁶ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, carboalkoxy, carboxy, carboxamido, cyano, and Q^b;

A is a single covalent bond or (CH(R¹⁵))_pa—(W⁷)_rr wherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is N(R⁷);

R⁷ is hydrido or alkyl;

R¹⁵ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl;

R¹ is selected from the group consisting of hydrido, hydroxy, hydroxyamino, amidino, amino, cyano, hydroxyalkyl, alkoxy, alkyl, alkylamino, aminoalkyl, alkylthio, alkoxyamino, haloalkyl, haloalkoxy and halo;

R² is Z⁰-Q;

Z⁰ is a covalent single bond.

Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R⁹, the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R¹³, a carbon adjacent to R⁹ and two atoms from the carbon at the point of attachment is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and two atoms from the carbon at the point of attachment is optionally substituted by R¹², and any carbon adjacent to both R¹⁰ and R¹² is optionally substituted by R¹¹;

R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, hydroxy, amino, amidino, guanidino, alkylamino, alkylthio, alkoxy, alkylsulfinyl, alkylsulfonyl, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, carboxy, carboxamido, and cyano;

R¹⁰ and R¹² are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl, alkoxy, alkoxyamino, hydroxy, amino, alkylamino, alkylsulfonamido, amidosulfonyl, hydroxyalkyl, aminoalkyl, halo, haloalkyl, carboalkoxy, carboxy, carboxamido, carboxyalkyl, and cyano;

R¹⁰ and R¹² are optionally independently selected from the group consisting of hydrido, amidino, guanidino, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxyamino, alkoxyamino, alkylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, hydroxyalkyl, and aminoalkyl;

Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one carbon of said phenyl or said heteroaryl is substituted by Q^s, a carbon two or three contiguous atoms from the point of attachment of Q^s is substituted by Q^b, a carbon adjacent to the point of attachment of Q^s is optionally substituted by R¹⁷, another carbon adjacent to the point of attachment of Q^s is optionally substituted by R¹⁸, a carbon adjacent to Q^b is optionally substituted by R¹⁶, and another carbon adjacent to Q^b is optionally substituted by R¹⁹;

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano;

R¹⁶ or R¹⁹, is optionally selected from the group consisting of NR²⁰R²¹, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴, with the proviso that R¹⁶, R¹⁹, and Q^b are not simultaneously hydrido;

Q^b is selected from the group consisting of NR²⁰R²¹, hydrido, N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), and C(NR²⁵)NR²³R²⁴;

R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently hydrido or alkyl;

Q^s is CH₂.

In still another most preferred embodiment of a compound of Formula I, said compound is the Formula: or a pharmaceutically acceptable salt thereof, wherein;

B is a C3-C7 cycloalkyl or a C4-C6 saturated heterocyclyl, wherein each ring carbon is optionally substituted with R³³, a ring carbon other than the ring carbon at the point of attachment of B to A is optionally substituted with oxo provided that no more than one ring carbon is substituted by oxo at the same time, ring carbons and a nitrogen adjacent to the carbon atom at the point of attachment are optionally substituted with R⁹ or R¹³, a ring carbon or nitrogen adjacent to the R position and two atoms from the point of attachment is optionally substituted with R¹⁰, a ring carbon or nitrogen adjacent to the R¹³ position and two atoms from the point of attachment is optionally substituted with R¹², a ring carbon or nitrogen three atoms from the point of attachment and adjacent to the R¹⁰ position is optionally substituted with R¹¹, a ring carbon or nitrogen three atoms from the point of attachment and adjacent to the R¹² position is optionally substituted with R³³, and a ring carbon or nitrogen four atoms from the point of attachment and adjacent to the R¹¹ and R³³ positions is optionally substituted with R³⁴;

R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, hydroxy, amino, amidino, guanidino, alkylamino, alkylthio, alkoxy, alkylsulfinyl, alkylsulfonyl, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, carboxy, carboxamido, and cyano;

R¹⁰ and R¹² are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkyl, alkoxy, alkoxyamino, hydroxy, amino, alkylamino, alkylsulfonamido, amidosulfonyl, hydroxyalkyl, aminoalkyl, halo, haloalkyl, carboalkoxy, carboxy, carboxamido, carboxyalkyl, and cyano;

R¹⁰ and R¹² are optionally independently selected from the group consisting of hydrido, amidino, guanidino, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy, amino, alkoxyamino, alkylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, hydroxyalkyl, and aminoalkyl;

R³³ and R³⁴ are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, carboalkoxy, carboxy, carboxamido, and cyano;

R³³ is optionally Q^b;

A is a single covalent bond or (CH(R¹⁵))_pa—(W⁷)_rr wherein rr is 0 or 1, pa is an integer selected from 0 through 3, and W⁷ is N(R⁷);

R⁷ is hydrido or alkyl;

R¹⁵ is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl;

R¹ is selected from the group consisting of hydrido, hydroxy, hydroxyamino, amidino, amino, cyano, hydroxyalkyl, alkoxy, alkyl, alkylamino, aminoalkyl, alkylthio, alkoxyamino, haloalkyl, haloalkoxy, and halo;

R² is Z⁰-Q;

Z⁰ is a covalent single bond;

Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R⁹ the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R¹³, a carbon adjacent to R⁹ and two atoms from the carbon at the point of attachment is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and two atoms from the carbon at the point of attachment is optionally substituted by R¹², and any carbon adjacent to both R¹⁰ and R¹² is optionally substituted by R¹¹;

Y⁰ is phenyl or a heteroaryl of 5 or 6 ring members, wherein one carbon of said phenyl or said heteroaryl is substituted by Q^s, a carbon two or three contiguous atoms from the point of attachment of Q^s is substituted by Q^b, a carbon adjacent to the point of attachment of Q^s is optionally substituted by R¹⁷, another carbon adjacent to the point of attachment of Q^s is optionally substituted by R¹⁸, a carbon adjacent to Q^b is optionally substituted by R¹⁶, and another carbon adjacent to Q^b is optionally substituted by R¹⁹;

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano;

R¹⁶ or R¹⁹ is optionally NR²⁰R²¹ or C(NR²⁵)NR²³R²⁴, with the proviso that R¹⁶, R¹⁹, and Q^b are not simultaneously hydrido;

Q^b is selected from the group consisting of NR²⁰R²¹, hydrido, and C(NR²⁵)NR²³R²⁴;

R²⁰, R²¹, R²³, R²⁴, and R²⁵ are independently hydrido or alkyl:

Q is CH₂.

In a preferred specific embodiment of Formula I, compounds have the Formula I-S: or a pharmaceutically acceptable salt thereof, wherein;

B is selected from the group consisting of phenyl, 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 1,2,4-triazol-3-yl, 1,2,4-triazol-5-yl, 1,2,4-oxadiazol-3-yl, 1,2,4-oxadiazol-5yl, 1,3,4-oxadiazol-3-yl, 1,3,4-oxadiazol-5-yl, 3-isothiazolyl, 5-isothiazolyl, 2-oxazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, 1,3,5-triazin-2-yl, 1,2,4-triazin-3-yl, 1,2,4-triazin-5-yl, 1,2,4-triazin-6-yl, 1,2,3-triazin-4-yl, and 1,2,3-triazin-5-yl, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R³², the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R³², a carbon adjacent to R³² and two atoms from the carbon at the point of attachment is optionally substituted by R³³, a carbon adjacent to R³⁶ and two atoms from the carbon at the point of attachment is optionally substituted by R³⁵, and any carbon adjacent to both R³³ and R³⁵ is optionally substituted by R³⁴;

R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methyl, ethyl, isopropyl, propyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, nitro, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, acetyl, propanoyl, trifluoroacetyl, pentafluoropropanoyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, 2,2,2-trifluoro-1-trifluoromethyl-1-hydroxyethyl, carboxymethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, cyano, and Q^b;

B is selected from the group consisting of hydrido, trimethylsilyl, ethyl, 2-propenyl, 2-propynyl, propyl, isopropyl, butyl, 2-butenyl, 3-butenyl, 2-butynyl, sec-butyl, tert-butyl, isobutyl, 2-methylpropenyl, 1-pentyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 2-pentynyl, 3-pentynyl, 2-pentyl, 1-methyl-2-butenyl, 1-methyl-3-butenyl, 1-methyl-2-butynyl, 3-pentyl, 1-ethyl-2-propenyl, 2-methylbutyl, 2-methyl-2-butenyl, 2-methyl-3-butenyl, 2-methyl-3-butynyl, 3-methylbutyl, 3-methyl-2-butenyl, 3-methyl-3-butenyl, 1-hexyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, 5-hexenyl, 2-hexynyl, 3-hexynyl, 4-hexynyl, 2-hexyl, 1-methyl-2-pentenyl, 1-methyl-3-pentenyl, 1-methylpentenyl, 1-methyl-2-pentynyl, 1-methyl-3-pentynyl, 3-hexyl, 1-ethyl-2-butenyl, 1-ethyl-3-butenyl, 1-propyl-2-propenyl, 1-ethyl-2-butynyl, 1-heptenyl, 2-heptenyl, 3-heptenyl, 4-heptenyl, 5-heptenyl, 6-heptenyl, 2-heptenyl, 3-heptenyl, 4-heptenyl, 5-heptenyl, 2-heptyl, 1-methyl-2-hexenyl, 1-methyl-3-hexenyl, 1-methyl-4-hexenyl, 1-methyl-5-hexenyl, 1-methyl-2-hexynyl, 1-methyl-3-hexynyl, 1-methyl-4-hexynyl, 3-heptyl, 1-ethyl-2-pentenyl, 1-ethyl-3-pentenyl, 1-ethyl-4-pentenyl, 1-butyl-2-propenyl, 1-ethyl-2-pentynyl, 1-ethyl-3-pentynyl, 1-octyl, 2-octenyl, 3-octenyl, 4-octenyl, 5-octenyl, 6-octenyl, 7-octenyl, ²-octynyl, 3-octynyl, 4-octynyl, 5-octynyl, 6-octynyl, 2-octyl, 1-methyl-2-heptenyl, 1-methyl-3-heptenyl, 1-methyl-4-heptenyl, 1-methyl-5-heptenyl, 1-methyl-6-heptenyl, 1-methyl-2-heptynyl, 1-methyl-3-heptynyl, 1-methyl-4-heptenyl, 1-methyl-5-heptenyl, 1-methyl-6-heptenyl, 1-methyl-2-heptenyl, 1-methyl-3-heptynyl, 1-methyl-4-heptynyl, 1-methyl-5-heptynyl, 3-octyl, 1-ethyl-2-hexenyl, 1-ethyl-3-hexenyl, 1-ethyl-4-hexenyl, 1-ethyl-2-hexynyl, 1-ethyl-3-hexynyl, 1-ethyl-4-hexynyl, 1-ethyl-5-hexenyl, 1-pentyl-2-propenyl, 4-octyl, 1-propyl-2-pentenyl, 1-propyl-3-pentenyl, 1-propyl-4-pentenyl, 1-butyl-2-butenyl, 1-propyl-2-pentynyl, 1-propyl-3-pentynyl, 1-butyl-2-butynyl, 1-butyl-3-butenyl, 2,2,2-trifluoroethyl, 2,2-difluoropropyl, 4-trifluoromethyl-5,5,-trifluoropentyl, 4-trifluoromethylpentyl, 5,5,6,6,6-pentafluorohexyl, and 3,3,3-trifluoropropyl, wherein each member of group B is optionally substituted at any carbon up to and including 5 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶;

B is optionally selected from the group consisting of cyclopropyl, cyclobutyl, oxetan-2-yl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, thiaetan-2-yl, thiaetan-3-yl, cyclopentyl, cyclohexyl, adamantyl, norbornyl, 3-trifluoromethylnorbornyl, 7-oxabicyclo[2.2.1]heptan-2-yl, bicyclo[3.1.0]hexan-6-yl, cycloheptyl, cyclooctyl, 2-morpholinyl, 3-morpholinyl, 4-morpholinyl, 1-piperazinyl, 2-piperazinyl, 1-piperidinyl, 2-piperidinyl, 3-piperidinyl, 4-piperidinyl, 1-pyrrolidinyl, 2-pyrrolidinyl, 3-pyrrolidinyl, 2-dioxanyl, 4H-2-pyranyl, 4H-3-pyranyl, 4H-4pyranyl, 4H-pyran-4one-2-yl, 4H-pyran-4one-3-yl, 2-tetrahydrofuranyl, 3-tetrahydrofuranyl, 2-tetrahydropyranyl, 3-tetrahydropyranyl, 4-tetrahydropyranyl, 2-tetrahydrothienyl, and 3-tetrahydrothienyl, wherein each ring carbon is optionally substituted with R³³, a ring carbon and nitrogen atoms adjacent to the carbon atom at the point of attachment is optionally substituted with R⁹ or R¹³, a ring carbon or nitrogen atom adjacent to the R position and two atoms from the point of attachment is optionally substituted with R¹⁰, and a ring carbon or nitrogen atom adjacent to the R¹³ position and two atoms from the point of attachment is optionally substituted with R¹²;

R⁹, R¹⁰, R¹¹, R¹², and R¹³ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, carboxymethyl, methyl, ethyl, isopropyl, propyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, nitro, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethytamino, methylthio, ethylthio, isopropylthio, trifluoromethylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, acetyl, propanoyl, trifluoroacetyl, pentafluoropropanoyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, 2,2,2-trifluoro-1-trifluoromethyl-1-hydroxyethyl, carboxymethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, and cyano;

A is selected from the group consisting of single covalent bond, O, S, NH, N(CH₃), N(OH), C(O), CH₂, CH₃CH, CF₃CH, NHC(O), N(CH₃)C(O), C(O)NH, C(O)N(CH₃), CF₃CC(O), C(O)CCH₃, C(O)CCF₃, CH₂C(O), (O)CCH₂, CH₂CH₂, CH₂CH₂CH₂, CH₃CHCH₂, CF₃CHCH₂, CH₃CC(O)CH₂, CF₃CC(O)CH₂, CH₂C(O)CCH₃, CH₂C(O)CCF₃, CH₂CH₂C(O), and CH₂(O)CCH₂;

A is optionally selected from the group consisting of CH₂N(CH₃), CH₂N(CH₂CH₃), CH₂CH₂N(CH₃), and CH₂CH₂N(CH₂CH₃) with the proviso that B is hydrido;

R¹ is selected from the group consisting of hydrido, cyano, methyl, ethyl, propyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, and bromo;

R² is Z⁰-Q;

Z⁰ is selected from the group consisting of covalent single bond, CH₂, CH₂CH₂, CH(OH), CH(NH₂), CH₂CH(OH), CH₂CHNH₂, CH(OH)CH₂, and CH(NH₂)CH₂;

Q is selected from the group consisting of phenyl, 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 1,2,4-triazol-3-yl, 1,2,4-triazol-5-yl, 1,2,4-oxadiazol-3-yl, 1,2,4-oxadiazol-5-yl, 1,3,4-oxadiazol-3-yl, 1,3,4-oxadiazol-5-yl, 3-isothiazolyl, 5-isothiazolyl, 2-oxazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, 1,3,5-triazin-2-yl, 1,2,4-triazin-3-yl, 1,2,4-triazin-5-yl, 1,2,4-triazin-6-yl, 1,2,3-triazin-4-yl, and 1,2,3-triazin-5-yl, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R⁹, the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R¹³, a carbon adjacent to R⁹ and two atoms from the carbon at the point of attachment is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and two atoms from the carbon at the point of attachment is optionally substituted by R¹², and any carbon adjacent to both R¹⁰ and R¹² is optionally substituted by R¹¹;

K is CHR^4a wherein R^4a is selected from the group consisting of methyl, ethyl, propyl, isopropyl, hydroxymethyl, 1-hydroxyethyl, methoxymethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoromethyl, methylthiomethyl, and hydrido;

E⁰ is a covalent single bond, C(O)N(H), (H)NC(O), and S(O)₂N(H);

Y⁰ is selected from the group of formulas consisting of:

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, methyl, ethyl, isopropyl, propyl, amidino, guanidino, carboxy, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethylthio, methylsulfinyl, ethylsulfinyl, methylsulfonyl, ethylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, acetyl, propanoyl, trifluoroacetyl, pentafluoropropanoyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, and cyano;

R¹⁶ and R¹⁹ are optionally Q^b with the proviso that no more than one of R¹⁶ and R¹⁹ is Q^b at the same time and that Q^b is Q^be;

Q^b is selected from the group consisting of NR²⁰R²¹, Q^be wherein Q^be is hydrido, C(NR²⁵)NR²³R²⁴ and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), with the proviso that no more than one of R²⁰ and R²¹ is hydroxy, N-methylamino, and N,N-dimethylamino at the same time and that no more than one of R²³ and R²⁴ is hydroxy, N-methylamino, and N,N-dimethylamino at the same time;

R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, methyl, ethyl, propyl, butyl, isopropyl, hydroxy, 2-aminoethyl, 2-N-methylamino)ethyl, and 2-(N,N-dimethylamino)ethyl;

Q^s is selected from the group consisting of a single covalent bond, CH₂, CH₂CH₂, CH₃CH, CF₃CH, CH₃CHCH₂, CF3CHCH₂, CH₂(CH₃)CH, CH═CH, CF═CH, C(CH₃)═CH, CH═CHCH₂, CF═CHCH₂, C(CH₃)═CHCH₂, CH₂CH═CH, CH₂CF═CH, CH₂C(CH₃)═CH, CH₂CH═CHCH₂, CH,CF═CHCH₂, CH₂C(CH₃)═CHCH₂, CH₂CH═CHCH₂CH₂, CH₂CF═CHCH₂CH₂, and CH₂C(CH₃)═CHCH₂CH₂.

In a more preferred specific embodiment of Formula I, compounds have the Formula I-MPS wherein B is an aromatic:

(I-MPS wherein B is aromatic)

or a pharmaceutically acceptable salt thereof, wherein;

B is selected from the group consisting of phenyl, 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and 1,3,5-triazin-2-yl, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R³², the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R³⁶, a carbon adjacent to R¹² and two atoms from the carbon at the point of attachment is optionally substituted by R³³, a carbon adjacent to R³⁶ and two atoms from the carbon at the point of attachment is optionally substituted by R³⁵, and any carbon adjacent to both R³³ and R³⁵ is optionally substituted by R³⁴;

R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxyethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, cyano, and Q^b;

A is selected from the group consisting of single covalent bond, NH, N(CH₃), N(OH), CH₂, CH₃CH, CF₃CH, NBC(O), N(CH₃)C(O), C(O)NH, C(O)N(CH₃), CH₂CH₂, CH₂CH₂CH₂, CH₃CHCH₂, and CF₃CHCH₂;

R¹⁶ or R¹⁹ is optionally C(NR²⁵)NR²³R²⁴ with the proviso that R¹⁶, R¹⁹, and Q^b are not simultaneously hydrido;

Q^b is C(NR²⁵)R²³R²⁴ or hydrido, with the proviso that no more than one of R²³ and R²⁴ is hydroxy at the same time;

R²³, R²⁴, and R²⁵ are independently selected from the group consisting of hydrido, methyl, ethyl, and hydroxy.

In another more preferred specific embodiment of Formula I, compounds have the Formula I-MPS wherein B is a non-cyclic substituent: (I-MPS wherein B is a non-cyclic substituent) or a pharmaceutically acceptable salt thereof, wherein;

B is selected from the group consisting of hydrido, ethyl, 2-propenyl, 2-propynyl, propyl, isopropyl, butyl, 2-butenyl, 3-butenyl, 2-butynyl, sec-butyl, tert-butyl, isobutyl, 2-methylpropenyl, 1-pentyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 2-pentynyl, 3-pentynyl, 2-pentyl, 1-methyl-2-butenyl, 1-methyl-3-butenyl, 1-methyl-2-butynyl, 3-pentyl, 1-ethyl-2-propenyl, 2-methylbutyl, 2-methyl-2-butenyl, 2-methyl-3-butenyl, 2-methyl-3-butynyl, 3-methylbutyl, 3-methyl-2-butenyl, 3-methyl-3-butenyl, 1-hexyl, 2-hexenyl, 3-hexenyl, 4-hexenyl, 5-hexenyl, 2-hexynyl, 3-hexynyl, 4-hexynyl, 2-hexyl, 1-methyl-2-pentenyl, 1-methyl-3-pentenyl, 1-methyl-4-pentenyl, 1-methyl-2-pentynyl, 1-methyl-3-pentynyl, 3-hexyl, 1-ethyl-2-butenyl, 1-ethyl-3-butenyl, 1-propyl-2-propenyl, 1-ethyl-2-butynyl, 1-heptyl, 2-heptenyl, 3-heptenyl, 4-heptenyl, 5-heptenyl, 6-heptenyl, 2-heptynyl, 3-heptynyl, 4-heptynyl, 5-heptynyl, 2-heptyl, 1-methyl-2-hexenyl, 1-methyl-3-hexenyl, 1-methylpentenyl, 1-methyl-5-hexenyl, 1-methyl-2-hexynyl, 1-methyl-3-hexynyl, 1-methyl-4hexynyl, 3-heptyl, 1-ethyl-2-pentenyl, 1-ethyl-3-pentenyl, 1-ethyl-4pentenyl, 1-butyl-2-propenyl, 1-ethyl-2-pentynyl, 1-ethyl-3-pentynyl, 2,2,2-trifluoroethyl, 2,2-difluoropropyl, 4trifluoromethyl-5,5,5-trifluoropentyl, 4-trifluoromethylpentyl, 5,5,6,6,6-pentafluorohexyl, and 3,3-3-trifluoropropyl, wherein each member of group B is optionally substituted at any carbon up to and including 5 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶;

R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2.2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, cyano, and Q^b;

A is selected from the group consisting of single covalent bond, NH, N(CH₃), N(OH), CH₂, CH₃CH, CF₃CH, NHC(O), N(CH₃)C(O), C(O)NH, C(O)N(CH₃), CH₂CH₂, CH₂CH₂CH₂, CH₃CHCH₂, and CF₃CHCH₂;

A is optionally selected from the group consisting of CH₂N(CH₃), CH₂N(CH₂CH₃), CH₂CH₂N(CH₃), and CH₂CH₂N(CH₂CH₃) with the proviso that B is hydrido;

R¹⁶ or R¹⁹ is optionally selected from the group consisting of NR²⁰R²¹, C(NR²⁵)NR²³R²⁴, and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), with the proviso that R¹⁶, R¹⁹, and Q^b are not simultaneously hydrido;

Q^b is selected from the group consisting of NR²⁰R²¹ hydrido, C(NR²⁵)NR²³R²⁴, and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴), with the provisos that no more than one of R²⁰ and R²¹ is hydroxy at the same time and that no more than one of R²³ and R²⁴ is hydroxy at the same time;

R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, methyl, ethyl, propyl, butyl, isopropyl, and hydroxy.

In still another more preferred specific embodiment of Formula I, compounds have the Formula I-MPS wherein B is a non-aromatic cyclic substituent: (I-MPS wherein B is a non-aromatic cyclic substituent) or a pharmaceutically acceptable salt thereof, wherein;

B is optionally selected from the group consisting of cyclopropyl, cyclobutyl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, thiaetan-3-yl, cyclopentyl, cyclohexyl, norbornyl, 7-oxabicyclo[2.2.1]heptan-2-yl, bicyclo[3.1.0]hexan-6-yl, cycloheptyl, 2-morpholinyl, 3-morpholinyl, 4-morpholinyl, 1-piperazinyl, 2-piperazinyl, 1-piperidinyl, 2-piperidinyl, 3-piperidinyl, 4-piperidinyl, 1-pyrrolidinyl, 2-pyrrolidinyl, 3-pyrrolidinyl, 2-dioxanyl, 4H-2-pyranyl, 4H-3-pyranyl, 4H-4-pyranyl, 4H-pyran-4-one-2-yl, 4H-pyran-4-one-3-yl, 2-tetrahydrofuranyl, 3-tetrahydrofuranyl, 2-tetrahydropyranyl, 3-tetrahydropyranyl, 4-tetrahydropyranyl, 2-tetrahydrothienyl, and 3-tetrahydrothienyl, wherein each ring carbon is optionally substituted with R³³, a ring carbon and nitrogen atoms adjacent to the carbon atom at the point of attachment is optionally substituted with R⁹ or R¹³, a ring carbon or nitrogen atom adjacent to the R⁹ position and two atoms from the point of attachment is optionally substituted with R¹⁰, and a ring carbon or nitrogen atom adjacent to the R¹³ position and two atoms from the point of attachment is optionally substituted with R¹²;

A is selected from the group consisting of single covalent bond, NH, N(CH₃), N(OH), CH₂, CH₃CH, CF₃CH, NHC(O), N(CH₃)C(O), C(O)NH, C(O)N(CH₃), CH₂CH₂, CH₂CH₂CH₂, CH₃CHCH₂, and CF3CHCH₂;

R³³ is selected from the group consisting of hydrido, amidino, guanidino, carboxy, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, cyano, and Q^b;

R¹⁶ or R¹⁹ is optionally C(NR²⁵)NR²³R²⁴ with the proviso that R¹⁶, R¹⁹, and Q^b are not simultaneously hydrido;

Q^b is C(NR²⁵)NR²³R²⁴ or hydrido, with the proviso that no more than one of R²³ and R²⁴ is hydroxy at the same time;

R²³, R²⁴, and R²⁵ are independently selected from the group consisting of hydrido, methyl, ethyl, and hydroxy.

The more preferred specific embodiment (I-MPS) compounds of the present invention having the Formula: or a pharmaceutically acceptable salt thereof, have common structural units. wherein:

R¹ is selected from the group consisting of hydrido, hydroxy, amino, amidino, hydroxyamino, aminomethyl, 1-aminoethyl, methylamino, dimethylamino, cyano, methyl, ethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, methoxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, methoxyamino, methylthio, ethylthio, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, and bromo;

R² is Z⁰-Q;

Z⁰ is selected from the group consisting of covalent single bond, CH₂. CH₂CH₂, O, S, NH, N(CH₃), OCH₂, SCH₂, N(H)CH₂, and N(CH₃)CH₂;

Q is selected from the group consisting of phenyl, 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, i-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and 1,3,5-triazin-2-yl, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R⁹, the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R¹³, a carbon adjacent to R⁹ and two atoms from the carbon at the point of attachment is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and two atoms from the carbon at the point of attachment is optionally substituted by R¹², and any carbon adjacent to both R¹⁰ and R¹² is optionally substituted by R¹¹;

R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, and cyano;

R¹⁰ and R¹² are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, carboxymethyl, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, N-benzylamidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl, N-(3-fluorobenzyl)amidocarbonyl, N-(2-trifluoromethylbenzyl)amidocarbonyl, N-(1-phenylethyl)amidocarbonyl, N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl, N-(2-chlorobenzyl)amidosulfonyl, N-ethylamidocarbonyl, N-isopropylamidocarbonyl, N-propylamidocarbonyl, N-isobutylamidocarbonyl, N-(2-butyl)amidocarbonyl, N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl, N-cyclohexylamidocarbonyl, fluoro, chloro, bromo, cyano, cyclobutoxy, cyclohexoxy, cyclohexylmethoxy, 4-trifluoromethycyclohexylmethoxy, cyclopentoxy, benzyl, benzyloxy, 4-bromo-3-fluorophenoxy, 3-bromobenzyloxy, 4-bromobenzyloxy, 4-bromobenzylamino, 5-bromopyrid-2-ylmethylamino, 4-butoxyphenamino, 3-chlorobenzyl, 4-chlorophenoxy, 4-chloro-3-ethylphenoxy, 4-chloro-3-ethylbenzylamino, 4-chloro-3-ethylphenylamino, 3-chlorobenzyloxy, 4-chlorobenzyloxy, 4-chlorobenzylsulfonyl, 4-chlorophenylamino, 4-chlorophenylsulfonyl, 5-chloropyrid-3-yloxy, 2-cyanopyrid-3-yloxy, 2,3-difluorobenzyloxy, 2,4-difluorobenzyloxy, 3,4-difluorobenzyloxy, 2,5-difluorobenzyloxy, 3,5-difluorophenoxy, 3,5-difluorobenzyloxy, 4-difluoromethoxybenzyloxy, 2,3-difluorophenoxy, 2,4-difluorophenoxy, 2,5-difluorophenoxy, 3,5-dimethylphenoxy, 3,4-dimethylphenoxy, 3,4-dimethylbenzyloxy, 3,5-dimethylbenzyloxy, 4-ethoxyphenoxy, 4-ethylbenzyloxy, 3-ethylphenoxy, 4-ethylaminophenoxy, 3-ethyl-5-methylphenoxy, 4-fluorobenzyloxy, 2-fluoro-3-trifluoromethylbenzyloxy, 3-fluoro-5-trifluoromethylbenzyloxy, 4-fluoro-2-trifluoromethylbenzyloxy, 4-fluoro-3-trifluoromethylbenzyloxy, 2-fluorophenoxy, 4-fluorophenoxy, 2-fluoro-3-trifluoromethylphenoxy, 2-fluorobenzyloxy, 4-fluorophenylamino, 2-fluoro-4-trifluoromethylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, phenylamino, 1-phenylethoxy, 2-phenylethoxy, 2-phenylethyl, 2-phenylethylamino, phenylsulfonyl, 3-trifluoromethoxybenzyloxy, 4-trifluoromethoxybenzyloxy, 3-trifluoromethoxyphenoxy, 4-trifuoromethoxyphenoxy, 3-trifluoromethylbenzyloxy, 4-trifluoromethylbenzyloxy, 2,4-bis-trifluoromethyl benzyloxy, 3-trifluoromethylbenzyl, 3,5bis-trifluoromethylbenzyloxy, 4-trifluoromethylphenoxy, 3-trifluoromethylphenoxy, 3-trifluoromethylthiobenzyloxy, 4-trifluoromethylthiobenzyloxy, 2,3-trifluorophenoxy, 2,3,5-trifluorophenoxy, 3-pentafluoroethylphenoxy, 3-(1,1,2,2-tetrafluoroethoxy)phenoxy, and 3-trifluoromethylthiophenoxy;

Y⁰ is selected from the group of formulas consisting of:

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, methyl, ethyl, isopropyl, propyl, carboxy, amidino, guanidino, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethylthio, methylsulfinyl, ethylsulfinyl, methylsulfonyl, ethylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, and cyano;

Q^s is selected from the group consisting of a single covalent bond, CH₂, and CH₂CH₂.

In a most preferred specific embodiment of Formula I, compounds have the Formula I-EMPS wherein B is an aromatic:

(I-EMPS wherein B is aromatic)

or a pharmaceutically acceptable salt thereof, wherein;

B is selected from the group consisting of phenyl, 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, and 5-isoxazolyl, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R³², the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R³⁶, a carbon adjacent to R³² and two atoms from the carbon at the point of attachment is optionally substituted by R³³, a carbon adjacent to R³⁶ and two atoms from the carbon at the point of attachment is optionally substituted by R³⁵, and any carbon adjacent to both R³³ and R³⁵ is optionally substituted by R³⁴;

R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, amidino, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, amino, N-methylamino, dimethylamino, methoxyamino, methylthio, ethylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, hydroxymethyl, amidocarbonyl, carboxy, cyano, and Q^b;

A is selected from the group consisting of single covalent bond, NH, N(CH₃), CH₂, CH₃CH, and CH₂CH₂;

Q^b is NR²⁰R²¹ or C(NR²⁵)NR²³R²⁴;

R²⁰, R²¹, R²³, R²⁴, and R²⁵ are independently selected from the group consisting of hydrido, methyl, and ethyl.

In another most preferred specific embodiment of Formula I, compounds have the Formula I-EMPS wherein B is a non-cyclic substituent: (I-EMPS wherein B is a non-cyclic substituent) or a pharmaceutically acceptable salt thereof, wherein;

B is selected from the group consisting of hydrido, ethyl, 2-propenyl, 2-propynyl, propyl, isopropyl, butyl, 2-butenyl, 2-butynyl, sec-butyl, tert-butyl, isobutyl, 2-methylpropenyl, 1-pentyl, 2-pentenyl, 3-pentenyl, 2-pentynyl, 3-pentynyl, 2-pentyl, ³-pentyl, 2-methylbutyl, 2-methyl-2-butenyl, 3-methylbutyl, 3-methyl-2-butenyl, 1-hexyl, 2-hexenyl, 3-hexenyl, 4hexenyl, 2-hexynyl, 3-hexynyl, 4-hexynyl, 2-hexyl, 1-methyl-2-pentenyl, 1-methyl-3-pentenyl, 1-methyl-2-pentynyl, 1-methyl-3-pentynyl, 3-hexyl, 1-ethyl-2-butenyl, 1-heptyl, 2-heptenyl, 3-heptenyl, 4-heptenyl, 5-heptenyl, 2-heptynyl, 3-heptynyl, 4-heptynyl, 5-heptynyl, 2-heptyl, 1-methyl-2-hexenyl, 1-methyl-3-hexenyl, 1-methyl-4-hexenyl, 1-methyl-2-hexynyl, 1-methyl-3-hexynyl, 1-methyl-4-hexynyl, 3-heptyl, 1-ethyl-2-pentenyl, 1-ethyl-3-pentenyl, 1-ethyl-2-pentynyl, 1-ethyl-3-pentynyl, 2,2,2-trifluoroethyl, 2,2-difluoropropyl, 4-trifluoromethyl-5,5,5-trifluoropentyl, 4-trifluoromethylpentyl, 5,5,6,6,6-pentafluorohexyl, and 3,3,3-trifluoropropyl, wherein each member of group B is optionally substituted at any carbon up to and including 5 atoms from the point of attachment of B to A with one or more of the group consisting of R³², R³³, R³⁴, R³⁵, and R³⁶;

R³², R³³, R³⁴, R³⁵, and R³⁶ are independently selected from the group consisting of hydrido, amidino, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, amino, N-methylamino, dimethylamino, methoxyamino, methylthio, ethylthio, trifluoromethyl, pentafluoroethyl, 2,2.2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, hydroxymethyl, amidocarbonyl, carboxy, cyano, and Q^b;

A is selected from the group consisting of single covalent bond, NH, N(CH₃), CH₂, CH₃CH, and CH₂CH₂;

A is optionally selected from the group consisting of CH₂N(CH₃), CH₂N(CH₂CH₃), CH₂CH₂N(CH₃), and CH₂CH₂N(CH₂CH₃) with the proviso that B is hydrido;

Q^b is selected from the group consisting of NR²⁰R²¹, C(NR²⁵)NR²³R²⁴, and N(R²⁶)C(NR²⁵)N(R²³)(R²⁴);

R²⁰, R²¹, R²³, R²⁴, R²⁵, and R²⁶ are independently selected from the group consisting of hydrido, methyl, and ethyl.

In still another most preferred specific embodiment of Formula I, compounds have the Formula I-EMPS wherein B is a non-aromatic cyclic substituent:

(I-EMPS wherein B is a non-aromatic cyclic substituent)

or a pharmaceutically acceptable salt thereof, wherein;

B is selected from the group consisting of cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, oxalan-2-yl, 2-(2R)-bicyclo[2.2.1]-heptyl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, bicyclo[3.1.0]hexan-6-yl, 2-morpholinyl, 3-morpholinyl, 4-morpholinyl, 1-piperazinyl, 2-piperazinyl, 1-piperidinyl, 2-piperidinyl, 3-piperidinyl, 4-piperidinyl, 1-pyrrolidinyl, 2-pyrrolidinyl, 3-pyrrolidinyl, 2-dioxanyl, 2-tetrahydrofuranyl, 3-tetrahydrofuranyl, 2-tetrahydropyranyl, 3-tetrahydropyranyl, 4-tetrahydropyranyl, 2-tetrahydrothienyl, and 3-tetrahydrothienyl, wherein each ring carbon is optionally substituted with R³³, ring carbons and a nitrogen adjacent to the carbon atom at the point of attachment are optionally substituted with R⁹ or R¹³, a ring carbon or nitrogen adjacent to the R⁹ position and two atoms from the point of attachment are optionally substituted with R¹⁰, and a ring carbon or nitrogen atom adjacent to the R¹³ position and two atoms from the point of attachment is optionally substituted with R¹²;

R³³ is selected from the group consisting of hydrido, amidino, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, carboxy, amino, N-methylamino, dimethylamino, methoxyamino, methylthio, ethylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, hydroxymethyl, amidocarbonyl, cyano, and Q^b;

A is selected from the group consisting of single covalent bond, NH, N(CH₃), CH₂, CH₃CH, and CH₂CH₂;

Q^b is NR²⁰R²¹ or C(NR²⁵)NR²³R²⁴;

R²⁰, R²¹, R²³, R²⁴, and R²⁵ are independently selected from the group consisting of hydrido, methyl, and ethyl.

The most preferred specific embodiment (I-EMPS) compounds of the present invention having the Formula: or a pharmaceutically acceptable salt thereof, have common structural units, wherein;

R¹ is selected from the group consisting of hydrido, hydroxy, hydroxymethyl, amino, aminomethyl, methylamino, cyano, methyl, trifluoromethyl, methoxy, methylthio, trifluoromethoxy, fluoro, and chloro;

R² is selected from the group consisting of phenyl, 2-thienyl, 2-furyl, 2-pyrrolyl, 2-imidazolyl, 2-thiazolyl, 3-isoxazolyl, 2-pyridyl, and 3-pyridyl, wherein a carbon adjacent to the carbon at the point of attachment is optionally substituted by R⁹, the other carbon adjacent to the carbon at the point of attachment is optionally substituted by R¹³, a carbon adjacent to R⁹ and two atoms from the carbon at the point of attachment is optionally substituted by R¹⁰, a carbon adjacent to R¹³ and two atoms from the carbon at the point of attachment is optionally substituted by R¹², and any carbon adjacent to both R¹⁰ and R¹² is optionally substituted by R¹¹;

R⁹, R¹¹, and R¹³ are independently selected from the group consisting of hydrido, methyl, ethyl, methoxy, ethoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, methylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, carboxy, and cyano;

R¹⁰ and R¹² are independently selected from the group consisting of hydrido, amidino, amidocarbonyl, N-methylamidocarbonyl, N-benzylamidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl, N-(3-fluorobenzyl)amidocarbonyl, N-(2-trifluoromethylbenzyl)amidocarbonyl, N-(1-phenylethyl)amidocarbonyl, N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl, N-(2-chlorobenzyl)amidosulfonyl, N-ethylamidocarbonyl, N-isopropylamidocarbonyl, N-propylamidocarbonyl, N-isobutylamidocarbonyl, N-(2-butyl)amidocarbonyl, N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl, N-cyclohexylamidocarbonyl, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, carboxy, carboxymethyl, amino, acetamido, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoroacetamido, aminomethyl, N-methylamino, dimethylamino, methoxyamino, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, methanesulfonamido, methoxycarbonyl, fluoro, chloro, bromo, and cyano;

R¹⁰ and R¹² are optionally independently selected from the group consisting of hydrido, amidino, guanidino, hydroxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, amino, aminomethyl, N-methylamino, dimethylamino, methoxyamino, cyclobutoxy, cyclohexoxy, cyclohexylmethoxy, 4-trifluoromethycyclohexylmethoxy, cyclopentoxy, benzyl, benzyloxy, 4-bromo-3-fluorophenoxy, 3-bromobenzyloxy, 4bromobenzyloxy, 4-bromobenzylamino, 5-bromopyrid-2-ylmethylamino, 4-butoxyphenamino, 3-chlorobenzyl, 4-chlorophenoxy, 4-chloro-3-ethylphenoxy, 4chloro-3-ethylbenzylamino, 4-chloro-3-ethylphenylamino, 3-chlorobenzyloxy, 4-chlorobenzyloxy, 4-chlorobenzylsulfonyl, 4-chlorophenylamino, 4-chlorophenylsulfonyl, 5-chloropyrid-3-yloxy, 2-cyanopyrid-3-yloxy, 2,3-difluorobenzyloxy, 2,4-difluorobenzyloxy, 3,4-difluorobenzyloxy, 2,5-difluorobenzyloxy, 3,5-difluorophenoxy, 3,5-difluorobenzyloxy, 4-difluoromethoxybenzyloxy, 2,3-difluorophenoxy, 2,4-difluorophenoxy, 2,5-difluorophenoxy, 3,5-dimethylphenoxy, 3,4-dimethylphenoxy, 3,4-dimethylbenzyloxy, 3,5-dimethylbenzyloxy, 4-ethoxyphenoxy, 4-ethylbenzyloxy, 3-ethylphenoxy, 4-ethylaminophenoxy, 3-ethyl-5-methylphenoxy, 4-fluorobenzyloxy, 2-fluoro-3-trifluoromethylbenzyloxy, 3-fluoro-5-trifluoromethylbenzyloxy, 4-fluoro-2-trifluoromethylbenzyloxy, 4-fluoro-3-trifluoromethylbenzyloxy, 2-fluorophenoxy, 4-fluorophenoxy, 2-fluoro-3-trifluoromethylphenoxy, 2-fluorobenzyloxy, 4-fluorophenylamino, 2-fluoro-4-trifluoromethylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, phenylamino, 1-phenylethoxy, 2-phenylethoxy, 2-phenylethyl, 2-phenylethylamino, phenylsulfonyl, 3-trifluoromethoxybenzyloxy, 4-trifluoromethoxybenzyloxy, 3-trifluoromethoxyphenoxy, 4-trifluoromethoxyphenoxy, 3-trifluoromethylbenzyloxy, 4-trifluoromethylbenzyloxy, 2,4bis-trifluoromethylbenzyloxy, 3-trifluoromethylbenzyl, 3,5bis-trifluoromethylbenzyloxy, 4-trifluoromethylphenoxy, 3-trifluoromethylphenoxy, 3-trifluoromethylthiobenzyloxy, 4-trifluoromethylthiobenzyloxy, 2,3,4-trifluorophenoxy, 2,3,5-trifluorophenoxy, 3-pentafluoroethylphenoxy, 3-(1,1,2,2-tetrafluoroethoxy)phenoxy, and 3-trifluoromethylthiophenoxy;

Y⁰ is selected from the group of formulas consisting of:

R¹⁶, R¹⁷, R¹⁸, and R¹⁹ are independently selected from the group consisting of hydrido, methyl, ethyl, amidino, guanidino, methoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, methylthio, ethylthio, trifluoromethylthio, methylsulfinyl, methylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoromethoxy, fluoro, chloro, hydroxymethyl, carboxy, and cyano;

Q is CH₂.

The compounds of this invention can be used in anticoagulant therapy for the treatment and prevention of a variety of thrombotic conditions including coronary artery and cerebrovascular disease. The compounds of this invention can be used to inhibit serine protease associated with the coagulation cascade and factors II, VII, VIII, IX, X, XI, or XII. The compounds of the invention can inhibit the formation of blood platelet aggregates, inhibit the formation of fibrin, inhibit thrombus formation, and inhibiting embolus formation in a mammal, in blood, in blood products, and in mammalian organs. The compounds also can be used for treating or preventing unstable angina, refractory angina, myocardial infarction, transient ischemic attacks, atrial fibrillation, thrombotic stroke, embolic stroke, deep vein thrombosis, disseminated intravascular coagulation, ocular build up of fibrin, and reocclusion or restenosis of recanalized vessels in a mammal. The compounds can also be used in prophylactic treatment of subjects who are at risk of developing such disorders. The compounds can be used to lower the risk of atherosclerosis. The compounds of Formula (I) would also be useful in prevention of cerebral vascular accident (CVA) or stroke.

Besides being useful for human treatment, these compounds are also useful for veterinary treatment of companion animals, exotic animals and farm animals, including mammals, rodents, and the like. More preferred animals include horses, dogs, and cats.

In yet another embodiment of the present invention, the novel compounds are selected from the compounds set forth in Examples 1 through Example 166, Tables 1 through Table 7, Example Table 1, and Example Table 2.

The use of generic terms in the description of the compounds are herein defined for clarity.

Standard single letter elemental symbols are used to represent specific types of atoms unless otherwise defined. The symbol “C” represents a carbon atom. The symbol “O” represents an oxygen atom. The symbol “N” represents a nitrogen atom. The symbol “P” represents a phosphorus atom. The symbol “S” represents a sulfur atom. The symbol “H” represents a hydrido atom. Double letter elemental symbols are used as defined for the elements of the periodical table (i.e., Cl represents chlorine, Se represents selenium, etc.).

As utilized herein, the term “alkyl”, either alone or within other terms such as “haloalkyl” and “alkylthio”, means an acyclic alkyl radical containing from 1 to about 10, preferably from 3 to about 8 carbon atoms and more preferably 3 to about 6 carbon atoms. Said alkyl radicals may be optionally substituted with groups as defined below. Examples of such radicals include methyl, ethyl, chloroethyl, hydroxyethyl, n-propyl, oxopropyl, isopropyl, n-butyl, cyanobutyl, isobutyl, sec-butyl, tert-butyl, pentyl, aminopentyl, iso-amyl, hexyl, octyl and the like.

The term “alkenyl” refers to an unsaturated, acyclic hydrocarbon radical in so much as it contains at least one double bond. Such alkenyl radicals contain from about 2 to about 10 carbon atoms, preferably from about 3 to about 8 carbon atoms and more preferably 3 to about 6 carbon atoms. Said alkenyl radicals may be optionally substituted with groups as defined below. Examples of suitable alkenyl radicals include propenyl, 2-chloropropenyl, buten-1-yl, isobutenyl, penten-1-yl, 2-2-methylbuten-1-yl, 3-methylbuten-1-yl, hexen-1-yl, 3-hydroxyhexen-1-yl, hepten-1-yl, and octen-1-yl, and the like.

The term “alkynyl” refers to an unsaturated, acyclic hydrocarbon radical in so much as it contains one or more triple bonds, such radicals containing about 2 to about 10 carbon atoms, preferably having from about 3 to about 8 carbon atoms and more preferably having 3 to about 6 carbon atoms. Said alkynyl radicals may be optionally substituted with groups as defined below. Examples of suitable alkynyl radicals include ethynyl, propynyl, hydroxypropynyl, butyn-1-yl, butyn-2-yl, pentyn-1-yl, pentyn-2-yl, 4-methoxypentyn-2-yl, 3-methylbutyn-1-yl, hexyn-1-yl, hexyn-2-yl, hexyn-3-yl, 3,3-dimethylbutyn-1-yl radicals and the like.

The term “hydrido” denotes a single hydrogen atom (H). This hydrido radical may be attached, for example, to an oxygen atom to form a “hydroxyl” radical, one hydrido radical may be attached to a carbon atom to form a “methine” radical —CH═, or two hydrido radicals may be attached to a carbon atom to form a “methylene” (—CH₂—) radical.

The term “carbon” radical denotes a carbon atom without any covalent bonds and capable of forming four covalent bonds.

The tern “cyano” radical denotes a carbon radical having three of four covalent bonds shared by a nitrogen atom.

The term “hydroxyalkyl” embraces radicals wherein any one or more of the alkyl carbon atoms is substituted with a hydroxyl as defined above. Specifically embraced are monohydroxyalkyl, dihydroxyalkyl and polyhydroxyalkyl radicals.

The term “alkanoyl” embraces radicals wherein one or more of the terminal alkyl carbon atoms are substituted with one or more carbonyl radicals as defined below. Specifically embraced are monocarbonylalkyl and dicarbonylalkyl radicals. Examples of monocarbonylalkyl radicals include formyl, aceryl, and pentanoyl. Examples of dicarbonylalkyl radicals include oxalyl, malonyl, and succinyl.

The term “alkylene” radical denotes linear or branched radicals having from 1 to about 10 carbon atoms and having attachment points for two or more covalent bonds. Examples of such radicals are methylene, ethylene, methylethylene, and isopropylidene.

The term “alkenylene” radical denotes linear or branched radicals having from 2 to about 10 carbon atoms, at least one double bond, and having attachment points for two or more covalent bonds. Examples of such radicals are 1,1-vinylidene (CH₂═C), 1,2-vinylidene (—CH═CH—), and 1,4-butadienyl (—CH═CH—CH═CH—).

The term “halo” means halogens such as fluorine, chlorine, bromine or iodine atoms.

The term “haloalkyl” embraces radicals wherein any one or more of the alkyl carbon atoms is substituted with halo as defined above. Specifically embraced are monohaloalkyl, dihaloalkyl and polyhaloalkyl radicals. A monohaloalkyl radical, for one example, may have either a bromo, chloro or a fluoro atom within the radical. Dihalo radicals may have two or more of the same halo atoms or a combination of different halo radicals and polyhaloalkyl radicals may have more than two of the same halo atoms or a combination of different halo radicals. More preferred haloalkyl radicals are “haloalkyl” radicals having one to about six carbon atoms. Examples of such haloalkyl radicals include fluoromethyl, difluoromethyl, trifluoromethyl, chloromethyl, dichloromethyl, trichloromethyl, trifluoroethyl, pentafluoroethyl, heptafluoropropyl, difluorochloromethyl, dichlorofluoromethyl, difluoroethyl, difluoropropyl, dichloroethyl and dichloropropyl.

The term “hydroxyhaloalkyl” embraces radicals wherein any one or more of the haloalkyl carbon atoms is substituted with hydroxy as defined above. Examples of “hydroxyhaloalkyl” radicals include hexafluorohydroxypropyl.

The term “haloalkylene radical” denotes alkylene radicals wherein any one or more of the alkylene carbon atoms is substituted with halo as defined above. Dihalo alkylene radicals may have two or more of the same halo atoms or a combination of different halo radicals and polyhaloalkylene radicals may have more than two of the same halo atoms or a combination of different halo radicals. More preferred haloalkylene radicals are “haloalkylene” radicals having one to about six carbon atoms. Examples of “haloalkylene” radicals include difluoromethylene, tetrafluoroethylene, tetrachloroethylene, alkyl substituted monofluoromethylene, and aryl substituted trifluoromethylene.

The term “haloalkenyl” denotes linear or branched radicals having from 1 to about 10 carbon atoms and having one or more double bonds wherein any one or more of the alkenyl carbon atoms is substituted with halo as defined above. Dihaloalkenyl radicals may have two or more of the same halo atoms or a combination of different halo radicals and polyhaloalkenyl radicals may have more than two of the same halo atoms or a combination of different halo radicals.

The terms “alkoxy” and “alkoxyalkyl” embrace linear or branched oxy-containing radicals each having alkyl portions of one to about ten carbon atoms, such as methoxy radical. The term “alkoxyalkyl” also embraces alkyl radicals having one or more alkoxy radicals attached to the alkyl radical, that is, to form monoalkoxyalkyl and dialkoxyalkyl radicals. More preferred alkoxy radicals are “alkoxy” radicals having one to six carbon atoms. Examples of such radicals include methoxy, ethoxy, propoxy, butoxy, isopropoxy and tert-butoxy alkyls. The “alkoxy” radicals may be further substituted with one or more halo atoms, such as fluoro, chloro or bromo, to provide “haloalkoxy” and “haloalkoxyalkyl” radicals. Examples of such haloalkoxy radicals include fluoromethoxy, chloromethoxy, trifluoromethoxy, difluoromethoxy, trifluoroethoxy, fluoroethoxy, tetrafluoroethoxy, pentafluoroethoxy, and fluoropropoxy. Examples of such haloalkoxyalkyl radicals include fluoromethoxymethyl, chloromethoxyethyl, trifluoromethoxymethyl, difluoromethoxyethyl, and trifluoroethoxymethyl.

The terms “alkenyloxy” and “alkenyloxyalkyl” embrace linear or branched oxy-containing radicals each having alkenyl portions of two to about ten carbon atoms, such as ethenyloxy or propenyloxy radical. The term “alkenyloxyalkyl” also embraces alkenyl radicals having one or more alkenyloxy radicals attached to the alkyl radical, that is, to form monoalkenyloxyalkyl and dialkenyloxyalkyl radicals. More preferred alkenyloxy radicals are “alkenyloxy” radicals having two to six carbon atoms. Examples of such radicals include ethenyloxy, propenyloxy, butenyloxy, and isopropenyloxy alkyls. The “alkenyloxy” radicals may be further substituted with one or more halo atoms, such as fluoro, chloro or bromo, to provide “haloalkenyloxy” radicals. Examples of such radicals include trifluoroethenyloxy, fluoroethenyloxy, difluoroethenyhloxy, and fluoropropenyloxy.

The term “haloalkoxyalkyl” also embraces alkyl radicals having one or more haloalkoxy radicals attached to the alkyl radical, that is, to form monohaloalkoxyalkyl and dihaloalkoxyalkyl radicals. The term “haloalkenyloxy” also embraces oxygen radicals having one or more haloalkenyloxy radicals attached to the oxygen radical, that is, to form monohaloalkenyloxy and dihaloalkenyloxy radicals. The term “haloalkenyloxyalkyl” also embraces alkyl radicals having one or more haloalkenyloxy radicals attached to the alkyl radical, that is, to form monohaloalkenyloxyalkyl and dihaloalkenyloxyalkyl radicals.

The term “alkylenedioxy” radicals denotes alkylene radicals having at least two oxygens bonded to a single alkylene group. Examples of “alkylenedioxy” radicals include methylenedioxy, ethylenedioxy, alkylsubstituted methylenedioxy, and arylsubstituted methylenedioxy. The term “haloalkylenedioxy” radicals denotes haloalkylene radicals having at least two oxy groups bonded to a single haloalkyl group. Examples of “haloalkylenedioxy” radicals include difluoromethylenedioxy, tetrafluoroethylenedioxy, tetrachloroethylenedioxy, alkylsubstituted monofluoromethylenedioxy, and arylsubstituted monofluoromethylenedioxy.

The term “aryl”, alone or in combination, means a carbocyclic aromatic system containing one, two or three rings wherein such rings may be attached together in a pendant manner or may be fused. The term “fused” means that a second ring is present (ie, attached or formed) by having two adjacent atoms in common (ie, shared) with the first ring. The term “fused” is equivalent to the term “condensed”. The term “aryl” embraces aromatic radicals such as phenyl, naphthyl, tetrahydronaphthyl, indane and biphenyl.

The term “perhaloaryl” embraces aromatic radicals such as phenyl, naphthyl, tetrahydronaphthyl, indane and biphenyl wherein the aryl radical is substituted with 3 or more halo radicals as defined below.

The term “heterocyclyl” embraces saturated and partially saturated heteroatom-containing ring-shaped radicals having from 4 through 15 ring members, herein referred to as “C4-C15 heterocyclyl”, selected from carbon, nitrogen, sulfur and oxygen, wherein at least one ring atom is a heteroatom. Heterocyclyl radicals may contain one, two or three rings wherein such rings may be attached in a pendant manner or may be fused. Examples of saturated heterocyclic radicals include saturated 3 to 6membered heteromonocylic group containing 1 to 4 nitrogen atoms[e.g. pyrrolidinyl, imidazolidinyl, piperidino, piperazinyl, etc.]; saturated 3 to 6-membered heteromonocylic group containing 1 to 2 oxygen atoms and 1 to 3 nitrogen atoms [e.g. morpholinyl, etc.]; saturated 3 to 6-membered heteromonocylic group containing 1 to 2 sulfur atoms and 1 to 3 nitrogen atoms [e.g., thiazolidinyl, etc.]. Examples of partially saturated heterocyclyl radicals include dihydrothiophene, dihydropyran, dihydrofuran and dihydrothiazole. Non-limiting examples of heterocyclic radicals include 2-pyrrolinyl, 3-pyrrolinyl, pyrrolindinyl, 1,3-dioxolanyl, 2H-pyranyl, 4H-pyranyl, piperidinyl, 1,4-dioxanyl, morpholinyl, 1,4-dithianyl, thiomorpholinyl, and the like. Said “heterocyclyl” group may be substituted as defined herein. Preferred heterocyclic radicals include five to twelve membered fused or unfused radicals.

The term “heteroaryl” embraces fully unsaturated heteroatom-containing ring-shaped aromatic radicals having from 4 through 15 ring members selected from carbon, nitrogen, sulfur and oxygen, wherein at least one ring atom is a heteroatom. Heteroaryl radicals may contain one, two or three rings wherein such rings may be attached in a pendant manner or may be fused. Examples of “heteroaryl” radicals, include the unsaturated heteromonocylic group of 5 to 6 contiguous members containing 1 to 4 nitrogen atoms, for example, pyrrolyl, pyrrolinyl, imidazolyl, pyrazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, pyrimidyl, pyrazinyl, pyridazinyl, triazolyl [e.g., 4H-1,2,4-triazolyl, 1H-1,2,3-triazolyl, 2H-1,2,3-triazolyl, etc.] tetrazolyl [e.g. 1H-tetrazolyl, 2H-tetrazolyl, etc.], etc.; unsaturated condensed heterocyclic group containing 1 to 5 nitrogen atoms, for example, indolyl, isoindolyl, indolizinyl, benzimidazolyl, quinolyl, isoquinolyl, indazolyl, benzotriazolyl, tetrazolopyridazinyl [e.g., tetrazolo [1,5-b]pyridazinyl, etc.], etc.; unsaturated 3 to 6membered heteromonocyclic group containing an oxygen atom, for example, pyranyl, 2-furyl, 3-furyl, etc.; unsaturated 5 to 6 membered heteromonocyclic group containing a sulfur atom, for example, 2-thienyl, 3-thienyl, etc.; unsaturated 5- to 6-membered heteromonocyclic group containing 1 to 2 oxygen atoms and 1 to 3 nitrogen atoms, for example, oxazolyl, isoxazolyl, oxadiazolyl [e.g., 1,2,4-oxadiazolyl, 1,3,4-oxadiazolyl, 1,2,5-oxadiazolyl, etc.] etc.; unsaturated condensed heterocyclic group containing 1 to 2 oxygen atoms and 1 to 3 nitrogen atoms [e.g. benzoxazolyl, benzoxadiazolyl, etc.]; unsaturated 5 to 6membered heteromonocyclic group containing 1 to 2 sulfur atoms and 1 to 3 nitrogen atoms, for example, thiazolyl, thiadiazolyl [e.g., 1,2,4-thiadiazolyl, 1,3,4-thiadiazolyl, 1,2,5-thiadiazolyl, etc.] etc.; unsaturated condensed heterocyclic group containing 1 to 2 sulfur atoms and 1 to 3 nitrogen atoms [e.g., benzothiazolyl, benzothiadiazolyl, etc.] and the like. The term also embraces radicals where heterocyclic radicals are fused with aryl radicals. Examples of such fused bicyclic radicals include benzofuran, benzothiophene, and the like. Said “heteroaryl” group may be substituted as defined herein. Preferred heteroaryl radicals include five and six membered unfused radicals. Non-limiting examples of heteroaryl radicals include 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyll 1,2,4-triazol-3-yl, 1,2,4-triazol-5-yl, 1,2,4-oxadiazol-3-yl, 1,2,4-oxadiazol-5-yl, 1,3,4-oxadiazol-3-yl, 1,3,4-oxadiazol-5-yl, 3-isothiazolyl, 5isothiazolyl, 2-oxazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, 1,3,5-triazin-2-yl, 1,2,4-triazin-3-yl, 1,2,4-triazin-5yl, 1,2,4-triazin-6-yl, 1,2,3-triazinyl, and 1,2,3-triazin-5-yl, and the like.

The term “sulfonyl”, whether used alone or linked to other terms such as alkylsulfonyl, denotes respectively divalent radicals —SO₂—. “Alkylsulfonyl”, embraces alkyl radicals attached to a sulfonyl radical, where alkyl is defined as above. “Alkylsulfonylalkyl”, embraces alkylsulfonyl radicals attached to an alkyl radical, where alkyl is defined as above. “Haloalkylsulfonyl”, embraces haloalkyl radicals attached to a sulfonyl radical, where haloalkyl is defined as above. “Haloalkylsulfonylalkyl”, embraces haloalkylsulfonyl radicals attached to an alkyl radical, where alkyl is defined as above.

The term “amidosulfonyl” embraces amino, monoalkylamino, dialkylamino, monocycloalkylamino, alkyl cycloalkylamino, dicycloalkylamino, N-alkyl-N-arylamino, arylamino, aralkylamino, nitrogen containing heterocyclyl, heterocyclylamino, N-alkyl-N-heterocyclylamino, heteroarylamino, and heteroaralkylamino radicals, attached to one of two unshared bonds in a sulfonyl radical.

The term “sulfinyl”, whether used alone or linked to other terms such as alkylsulfinyl, denotes respectively divalent radicals —S(O)—. “Alkylsulfinyl”, embraces alkyl radicals attached to a sulfinyl radical, where alkyl is defined as above. “Alkylsulfinylalkyl”, embraces alkylsulfinyl radicals attached to an alkyl radical, where alkyl is defined as above. “Haloalkylsulfinyl”, embraces haloalkyl radicals attached to a sulfinyl radical, where haloalkyl is defined as above. “Haloalkylsulfinylalkyl”, embraces haloalkylsulfinyl radicals attached to an alkyl radical, where alkyl is defined as above.

The term “aralkyl” embraces aryl-substituted alkyl radicals. Preferable aralkyl radicals are “aralkyl” radicals having aryl radicals attached to alkyl radicals having one to six carbon atoms. Examples of such radicals include benzyl, diphenylmethyl, triphenylmethyl, phenylethyl and diphenylethyl. The terms benzyl and phenylmethyl are interchangeable.

The term “heteroaralkyl” embraces heteroaryl-substituted alkyl radicals wherein the beteroaralkyl radical may be additionally substituted with three or more substituents as defined above for aralkyl radicals. The term “perhaloaralkyl” embraces aryl-substituted alkyl radicals wherein the aralkyl radical is substituted with three or more halo radicals as defined above.

The term “aralkylsulfinyl”, embraces aralkyl radicals attached to a sulfinyl radical, where aralkyl is defined as above. “Aralkylsulfinylalkyl”, embraces aralkylsulfinyl radicals attached to an alkyl radical, where alkyl is defined as above.

The term “aralkylsulfonyl”, embraces aralkyl radicals attached to a sulfonyl radical, where aralkyl is defined as above. “Aralkylsulfonylalkyl”, embraces aralkylsulfonyl radicals attached to an alkyl radical, where alkyl is defined as above.

The term “cycloalkyl” embraces radicals having three to 15 carbon atoms. More preferred cycloalkyl radicals are “cycloalkyl” radicals having three to seven carbon atoms. Examples include radicals such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl and cycloheptyl. The term cycloalkyl embraces radicals having seven to 15 carbon atoms and having two to four rings. Examples include radicals such as norbornyl (i.e., bicyclo[2.2.1]heptyl) and adamantyl. The term “cycloalkylalkyl” embraces cycloalkyl-substituted alkyl radicals. Preferable cycloalkylalkyl radicals are “cycloalkylalkyl” radicals having cycloalkyl radicals attached to alkyl radicals having one to six carbon atoms. Examples of such radicals include cyclohexylhexyl. The term “cycloalkenyl” embraces radicals having three to ten carbon atoms and one or more carbon-carbon double bonds. Preferred cycloalkenyl radicals are “cycloalkenyl” radicals having three to seven carbon atoms. Examples include radicals such as cyclobutenyl, cyclopentenyl, cyclohexenyl and cycloheptenyl. The term “halocycloalkyl” embraces radicals wherein any one or more of the cycloalkyl carbon atoms is substituted with halo as defined above. Specifically embraced are monohalocycloalkyl, dihalocycloalkyl and polyhalocycloalkyl radicals. A monohalocycloalkyl radical, for one example, may have either a bromo, chloro or a fluoro atom within the radical. Dihalo radicals may have two or more of the same halo atoms or a combination of different halo radicals and polyhalocycloalkyl radicals may have more than two of the same halo atoms or a combination of different halo radicals. More preferred halocycloalkyl radicals are “halocycloalkyl” radicals having three to about eight carbon atoms. Examples of such halocycloalkyl radicals include fluorocyclopropyl, difluorocyclobutyl, trifluorocyclopentyl, tetrafluorocyclohexyl, and dichlorocyclopropyl. The term “halocycloalkenyl” embraces radicals wherein any one or more of the cycloalkenyl carbon atoms is substituted with halo as defined above. Specifically embraced are monohalocycloalkenyl, dihalocycloalkenyl and polyhalocycloalkenyl radicals.

The term “cycloalkoxy” embraces cycloalkyl radicals attached to an oxy radical. Examples of such radicals includes cyclohexoxy and cyclopentoxy. The term “cycloalkoxyalkyl” also embraces alkyl radicals having one or more cycloalkoxy radicals attached to the alkyl radical, that is, to form monocycloalkoxyalkyl and dicycloalkoxyalkyl radicals. Examples of such radicals include cyclohexoxyethyl. The “cycloalkoxy” radicals may be further substituted with one or more halo atoms, such as fluoro, chloro or bromo, to provide “halocycloalkoxy” and “halocycloalkoxyalkyl” radicals.

The term “cycloalkylalkoxy” embraces cycloalkyl radicals attached to an alkoxy radical. Examples of such radicals includes cyclohexylmethoxy and cyclopentylmethoxy.

The term “cycloalkenyloxy” embraces cycloalkenyl radicals attached to an oxy radical. Examples of such radicals includes cyclohexenyloxy and cyclopentenyloxy. The term “cycloalkenyloxyalkyl” also embraces alkyl radicals having one or more cycloalkenyloxy radicals attached to the alkyl radical, that is, to form monocycloalkenyloxyalkyl and dicycloalkenyloxyalkyl radicals. Examples of such radicals include cyclohexenyloxyethyl. The “cycloalkenyloxy” radicals may be further substituted with one or more halo atoms, such as fluoro, chloro or bromo, to provide “halocycloalkenyloxy” and “halocycloalkenyloxyalkyl” radicals.

The term “cycloalkylenedioxy” radicals denotes cycloalkylene radicals having at least two oxygens bonded to a single cycloalkylene group. Examples of “alkylenedioxy” radicals include 1,2-dioxycyclohexylene.

The term “cycloalkylsulfinyl”, embraces cycloalkyl radicals attached to a sulfinyl radical, where cycloalkyl is defined as above. “Cycloalkylsulfinylalkyl”, embraces cycloalkylsulfinyl radicals attached to an alkyl radical, where alkyl is defined as above. The term “Cycloalkylsulfonyl”, embraces cycloalkyl radicals attached to a sulfonyl radical, where cycloalkyl is defined as above. “Cycloalkylsulfonylalkyl”, embraces cycloalkylsulfonyl radicals attached to an alkyl radical, where alkyl is defined as above.

The term “cycloalkylalkanoyl” embraces radicals wherein one or more of the cycloalkyl carbon atoms are substituted with one or more carbonyl radicals as defined below. Specifically embraced are monocarbonylcycloalkyl and dicarbonylcycloalkyl radicals. Examples of monocarbonylcycloalkyl radicals include cyclohexylcarbonyl, cyclohexylacetyl, and cyclopentylcarbonyl. Examples of dicarbonylcycloalkyl radicals include 1,2-dicarbonylcyclohexane.

The term “alkylthio” embraces radicals containing a linear or branched alkyl radical, of one to ten carbon atoms, attached to a divalent sulfur atom. More preferred alkylthio radicals are “alkylthio” radicals having one to six carbon atoms. An example of “alkylthio” is methylthio (CH₃—S—). The “alkylthio” radicals may be further substituted with one or more halo atoms, such as fluoro, chloro or bromo, to provide “haloalkylthio” radicals. Examples of such radicals include fluoromethylthio, chloromethylthio, trifluoromethylthio, difluoromethylthio, trifluoroethylthio, fluoroethylthio, tetrafiuoroethylthio, pentafluoroethylthio, and fluoropropylthio.

The term “alkyl aryl amino” embraces radicals containing a linear or branched alkyl radical, of one to ten carbon atoms, and one aryl radical both attached to an amino radical. Examples include N-methyl-4-methoxyaniline, N-ethylmethoxyaniline, and N-methylftrifluoromethoxyaniline.

The term alkylamino denotes “monoalkylamino” and “dialkylamino” containing one or two alkyl radicals, respectively, attached to an amino radical. One or two alkyl radicals of the alkylamino may be optionally substituted with hydrogen bonding substitutents selected from the group consisting of hydroxy, amino, monoalkylamino, dialkylamino, amidino, guanidino, thiol, and alkoxy provided the alkyl radicals comprises two or more carbons.

The terms arylamino denotes “monoarylamino” and “diarylamino” containing one or two aryl radicals, respectively, attached to an amino radical. Examples of such radicals include N-phenylamino and N-naphthylamino.

The term “aralkylamino”, embraces aralkyl radicals attached to an amino radical, where aralkyl is defined as above. The term aralkylamino denotes “monoaralkylamino” and “diaralkylamino” containing one or two aralkyl radicals, respectively, attached to an amino radical. The term aralkylamino further denotes “monoaralkyl monoalkylamino” containing one aralkyl radical and one alkyl radical attached to an amino radical.

The term “arylsulfinyl” embraces radicals containing an aryl radical, as defined above, attached to a divalent S(O) atom. The term “arylsulfinylalkyl” denotes arylsulfinyl radicals attached to a linear or branched alkyl radical, of one to ten carbon atoms.

The term “arylsulfonyl”, embraces aryl radicals attached to a sulfonyl radical, where aryl is defined as above. “arylsulfonylalkyl”, embraces arylsulfonyl radicals attached to an alkyl radical, where alkyl is defined as above. The term “heteroarylsulfinyl” embraces radicals containing an heteroaryl radical, as defined above, attached to a divalent S(O) atom. The term “heteroarylsulfinylalkyl” denotes heteroarylsulfinyl radicals attached to a linear or branched alkyl radical, of one to ten carbon atoms. The term “Heteroarylsulfonyl”, embraces heteroaryl radicals attached to a sulfonyl radical, where heteroaryl is defined as above. “Heteroarylsulfonylalkyl”, embraces heteroarylsulfonyl radicals attached to an alkyl radical, where alkyl is defined as above.

The term “aryloxy” embraces aryl radicals, as defined above, attached to an oxygen atom. Examples of such radicals include phenoxy, 4chloro-3-ethyiphenoxy, 4-chloro-3-methylphenoxy, 3-chloro-4-ethylphenoxy, 3,4-dichlorophenoxy, 4-methylphenoxy, 3-trifluoromethoxyphenoxy, 3-trifluoromethylphenoxy, 4-fluorophenoxy, 3,4-dimethylphenoxy, 5bromo-2-fluorophenoxy, 4-bromo-3-fluorophenoxy, 4-fluoro-3-methylphenoxy, 5,6,7,8-tetrahydronaphthyloxy, 3-isopropylphenoxy, 3-cyclopropylphenoxy, 3-ethylphenoxy, 3-pentafluoroethylphenoxy, 3-(1,1,2,2-tetrafluoroethoxy)-phenoxy, and 4-tert-butylphenoxy.

The term “aroyl” embraces aryl radicals, as defined above, attached to an carbonyl radical as defined above. Examples of such radicals include benzoyl and toluoyl.

The term “aralkanoyl” embraces aralkyl radicals, as defined herein, attached to an carbonyl radical as defined above. Examples of such radicals include, for example, phenylacetyl.

The term “aralkoxy” embraces oxy-containing aralkyl radicals attached through an oxygen atom to other radicals. More preferred aralkoxy radicals are “aralkoxy” radicals having phenyl radicals attached to alkoxy radical as described above. Examples of such radicals include benzyloxy, 1-phenylethoxy, 3-trifluoromethoxybenzyloxy, 3-trifluoromethylbenzyloxy, 3,5-difluorobenyloxy, 3-bromobenzyloxy, 4-propylbenzyloxy, 2-fluoro-3-trifluoromethyibenzyloxy, and 2-phenylethoxy.

The term “aryloxyalkyl” embraces aryloxy radicals, as defined above, attached to an alkyl group. Examples of such radicals include phenoxymethyl.

The term “haloaryloxyalkyl” embraces aryloxyalkyl radicals, as defined above, wherein one to five halo radicals are attached to an aryloxy-group.

The term “heteroaroyl” embraces heteroaryl radicals, as defined above, attached to an carbonyl radical as defined above. Examples of such radicals include furoyl and nicotinyl.

The term “heteroaralkanoyl” embraces heteroaralkyl radicals, as defined herein, attached to an carbonyl radical as defined above. Examples of such radicals include, for example, pyridylacetyl and furylbutyryl.

The term “heteroaralkoxy” embraces oxy-containing heteroaralkyl radicals attached through an oxygen atom to other radicals. More preferred heteroaralkoxy radicals are “heteroaralkoxy” radicals having heteroaryl radicals attached to alkoxy radical as described above. The term “heterocyclylalkoxy” embraces oxy-containing heterocyclylalkyl radicals attached through an oxygen atom to other radicals.

The term “haloheteroaryloxyalkyl” embraces heteroaryloxyalkyl radicals, as defined above, wherein one to four halo radicals are attached to an heteroaryloxy group.

The term “heteroarylamino” embraces heteroaryl radicals, as defined above, attached to an amino group. Examples of such radicals include pyridylamino. The term “heterocyclylamino” embraces heterocyclyl radicals, as defined above, attached to an amino group.

The term “heteroaralkylamino” embraces heteroaralkyl radicals, as defined above, attached to an amino group. Examples of such radicals include pyridylmethylamino. The term “heterocyclylalkylamino” embraces heterocyclylalkyl radicals, as defined above, attached to an amino group.

The term “heteroaryloxy” embraces heteroaryl radicals, as defined above, attached to an oxy group. Examples of such radicals include 2-thiophenyloxy, 2-pyrimidyloxy, 2-pyridyloxy, 3-pyridyloxy, and 4-pyridyloxy. The term “heterocyclyloxy” embraces heterocyclyl radicals, as defined above, attached to an oxy group.

The term “heteroaryloxyalkyl” embraces heteroaryloxy radicals, as defined above, attached to an alkyl group. Examples of such radicals include 2-pyridyloxymethyl, 3-pyridyloxyethyl, and 4-pyridyloxymethyl. The term “heterocyclyloxyalkyl” embraces heterocyclyloxy radicals, as defined above, attached to an alkyl group.

The term “arylthio” embraces aryl radicals, as defined above, attached to an sulfur atom. Examples of such radicals include phenylthio.

The term “arylthioalkyl” embraces arylthio radicals, as defined above attached to an alkyl group. Examples of such radicals include phenylthiomethyl.

The term “alkylthioalkyl” embraces alkylthio radicals, as defined above, attached to an alkyl group. Examples of such radicals include methylthiomethyl. The term “alkoxyalkyl” embraces alkoxy radicals, as defined above, attached to an alkyl group. Examples of such radicals include methoxymethyl.

The term “carbonyl” denotes a carbon radical having two of the four covalent bonds shared with an oxygen atom. The term “carboxy” embraces a hydroxyl radical, as defined above, attached to one of two unshared bonds in a carbonyl group. The term “carboxamido” embraces amino, monoalkylamino, dialkylamino, monocycloalkylamino, alkylcycloalkylamino, dicycloalkylamino, N-alkyl-N-arylamino, arylamino, aralkylamino, nitrogen containing heterocyclyl, heterocyclylamino, N-alkyl-N-heterocyclylamino, heteroarylamino, and heteroaralkyl amino radicals, attached to one of two unshared bonds in a carbonyl group. The term “carboxamidoalkyl” embraces carboxamido radicals, as defined above, attached to an alkyl group. The term “carboxyalkyl” embraces a carboxy radical, as defined above, attached to an alkyl group. The term “carboalkoxy” embraces alkoxy radicals, as defined above, attached to one of two unshared bonds in a carbonyl group. The term “carboaralkoxy” embraces aralkoxy radicals, as defined above, attached to one of two unshared bonds in a carbonyl group. The term “monocarboalkoxyalkyl” embraces one carboalkoxy radical, as defined above, attached to an alkyl group. The term “dicarboalkoxyalkyl” embraces two carboalkoxy radicals, as defined above, attached to an alkylene group. The term “monocyanoalkyl” embraces one cyano radical, as defined above, attached to an alkyl group. The term “dicyanoalkylene” embraces two cyano radicals, as defined above, attached to an alkyl group. The term “carboalkoxycyanoalkyl” embraces one cyano radical, as defined above, attached to an carboalkoxyalkyl group.

The term “acyl”, alone or in combination, means a carbonyl or thionocarbonyl group bonded to a radical selected from, for example, hydrido, alkyl, alkenyl, alkynyl, haloalkyl, alkoxy, alkoxyalkyl, haloalkoxy, aryl, heterocyclyl, heteroaryl, alkylsulfinylalkyl, alkylsulfonylalkyl, aralkyl, cycloalkyl, cycloalkylalkyl, cycloalkenyl, alkylthio, arylthio, amino, alkylamino, dialkylamino, aralkoxy, arylthio, and alkylthioalkyl. Examples of “acyl” are formyl, acetyl, benzoyl, trifluoroacetyl, phthaloyl, malonyl, nicotinyl, and the like. The term “haloalkanoyl” embraces one or more halo radicals, as defined herein, attached to an alkanoyl radical as defined above. Examples of such radicals include, for example, chloroacetyl, trifluoroacetyl, bromopropanoyl, and heptafluorobutanoyl.

The term “phosphono” embraces a pentavalent phosphorus attached with two covalent bonds to an oxygen radical. The term “dialkoxyphosphono” denotes two alkoxy radicals, as defined above, attached to a phosphono radical with two covalent bonds. The term “diaralkoxyphosphono” denotes two aralkoxy radicals, as defined above, attached to a phosphono radical with two covalent bonds. The term “dialkoxyphosphonoalkyl” denotes dialkoxyphosphono radicals, as defined above, attached to an alkyl radical. The term “diaralkoxyphosphonoalkyl” denotes diaralkoxyphosphono radicals, as defined above, attached to an alkyl radical.

The term “amino” denotes a nitrogen atom containing two substituents such as hydrido, hydroxy or alkyl and having one covalent bond available for bonding to a single atom such as carbon. Examples of such amino radicals include, for example, —NH₂, —NHCH₃, —NHOH, and —NHOCH₃. The term “imino” denotes a nitrogen atom containing one substituent such as hydrido, hydroxy or alkyl and having two covalent bonds available for bonding to a single atom such as carbon. Examples of such imino radicals include, for example, ═NH, ═NCH₃, ═NOH, and ═NOCH₃. The term “imino carbonyl” denotes a carbon radical having two of the four covalent bond sites shared with an imino group. Examples of such imino carbonyl radicals include, for example, C═NH, C═NCH₃, C═NOH, and C═NOCH₃. The term “amidino” embraces a substituted or unsubstituted amino group bonded to one of two available bonds of an iminocarbonyl radical. Examples of such amidino radicals include, for example, NH₂—C═NH, NH₂—C═NCH₃, NH₂—C═NOCH₃ and CH₃NH—C═NOH. The term “guanidino” denotes an amidino group bonded to an amino group as defined above where said amino group can be bonded to a third group. Examples of such guanidino radicals include, for example, NH₂—C(NH)—NH—, NH₂—C(NCH₃)—NH—, NH₂—C(NOCH₃)—NH—, and CH₃NH—C(NOH)—NH—.

The term “sulfonium” denotes a positively charged trivalent sulfur atom where said sulfur is substituted with three carbon based groups such as alkyl. alkenyl, aralkyl, or aryl. The term “dialkyl sulfonium” denotes a sulfonium group where said sulfur is substituted with two alkyl groups. Examples of such dialkylsulfonium radicals include, for example, (CH₃)₂S⁺—. The term “dialkyl sulfonium alkyl” denotes a dialkyl sulfonium group where said group is bonded to one bond of an alkylene group as defined above. Examples of such dialkylsulfoniumalkyl radicals include (CH₃)₂S⁺—CH₂CH₂—.

The term “phosphonium” denotes a positively charged tetravalent phosphorus atom where said phosphorus is substituted with four carbon based groups such as alkyl, alkenyl, aralkyl, or aryl. The term “trialkyl phosphonium” denotes a phosphonium group where said phosphorus is substituted with three alkyl groups. Examples of such trialkylphosphonium radicals include, for example, (CH₃)₃P⁺—.

Said “alkyl”, “alkenyl”, “alkynyl”, “alkanoyl”, “alkylene”, “alkenylene”, “hydroxyalkyl”, “haloalkyl”, “haloalkylene”, “haloalkenyl”, “alkoxy”, “alkenyloxy”, “alkenyloxyalkyl”, “alkoxyalkyl”, “aryl”, “perhaloaryl”, “haloalkoxy”, “haloalkoxyalkyl”, “haloalkenyloxy”, “haloalkenyloxyalkyl”, “alkylenedioxy”, “haloalkylenedioxy”, “heterocyclyl”, “heteroaryl”, “hydroxyhaloalkyl”, “alkylsulfonyl”, “haloalkylsulfonyl”, “alkylsulfonylalkyl”, “haloalkylsulfonylalkyl”, “alkylsulfinyl”, “alkylsulfinylalkyl”, “haloalkylsulfinylalkyl”, “aralkyl”, “heteroaralkyl”, “perhaloaralkyl”, “aralkylsulfonyl”, “aralkylsulfonylalkyl”, “aralkylsulfinyl”, “aralkylsulfinylalkyl”, “cycloalkyl”, “cycloalkylalkanoyl”, “cycloalkylalkyl”, “cycloalkenyl”, “halocycloalkyl”, “halocycloalkenyl”, “cycloalkylsulfinyl”, “cycloalkylsulfinylalkyl”, “cycloalkylsulfonyl”, “cycloalkylsulfonylalkyl”, “cycloalkoxy”, “cycloalkoxyalkyl”, “cycloalkylalkoxy”, “cycloalkenyloxy”, “cycloalkenyloxyalkyl”, “cycloalkylenedioxy”, “halocycloalkoxy”, “halocycloalkoxyalkyl”, “halocycloalkenyloxy”, “halocycloalkenyloxyalkyl”, “alkylthio”, “haloalkylthio”, “alkylsulfinyl”, “amino”, “oxy”, “thio”, “alkylamino”, “arylamino”, “aralkylamino”, “arylsulfinyl”, “arylsulfinylalkyl”, “arylsulfonyl”, “arylsulfonylalkyl”, “heteroarylsulfinyl”, “heteroarylsulfinylalkyl”, “heteroarylsulfonyl”, “heteroarylsulfonylalkyl”, “heteroarylamino”, “heteroaralkylamino”, “heteroaryloxy”, “heteroaryloxylalkyl”, “aryloxy”, “aroyl”, “aralkanoyl”, “aralkoxy”, “aryloxyalkyl”, “haloaryloxyalkyl”, “heteroaroyl”, “heteroaralkanoyl”, “heteroaralkoxy”, “heteroaralkoxyalkyl”, “arylthio”, “arylthioalkyl”, “alkoxyalkyl”, “acyl”, “amidino”, “guanidino”, “dialkylsulfonium”, “trialkylphosphonium”, and “dialkylsulfoniumalkyl” groups defined above may optionally have 1 or more non-hydrido substituents such as amidino, guanidino, dialkylsulfonium, trialkylphosphonium, dialkylsulfoniumalkyl, perhaloaralkyl, aralkylsulfonyl, aralkylsulfonylalkyl, aralkylsulfinyl, aralkylsulfinylalkyl, halocycloalkyl, halocycloalkenyl, cycloalkylsulfinyl, cycloalkylsulfinylalkyl, cycloalkylsulfonyl, cycloalkylsulfonylalkyl, heteroarylamino, N-heteroarylamino-N-alkylamino, heteroaralkylamino, heteroaryloxy, heteroaryloxylalkyl, haloalkylthio, alkanoyloxy, alkoxy, alkoxyalkyl, haloalkoxylalkyl, heteroaralkoxy, cycloalkoxy, cycloalkenyloxy, cycloalkoxyalkyl, cycloalkylalkoxy, cycloalkenyloxyalkyl, cycloalkylenedioxy, halocycloalkoxy, halocycloalkoxyalkyl, halocycloalkenyloxy, halocycloalkenyloxyalkyl, hydroxy, amino, thio, nitro, alkyl amino, alkylthio, alkylthioalkyl, arylamino, aralkylamino, arylthio, arylthioalkyl, heteroaralkoxyalkyl, alkylsulfinyl, alkylsulfinylalkyl, arylsulfinylalkyl, arylsulfonylalkyl, heteroarylsulfinylalkyl, heteroarylsulfonylalkyl, alkylsulfonyl, alkylsulfonylalkyl, haloalkylsulfinylalkyl, haloalkylsulfonylalkyl, alkylsulfonamido, alkylaminosulfonyl, amidosulfonyl, monoalkyl amidosulfonyl, dialkyl amidosulfonyl, monoarylamidosulfonyl, arylsulfonamido, diarylamidosulfonyl, monoalkylmonoaryl amidosulfonyl, arylsulfinyl, arylsulfonyl, heteroarylthio, heteroarylsulfinyl, heteroarylsulfonyl, alkanoyl, alkenoyl, aroyl, heteroaroyl, aralkanoyl, heteroaralkanoyl, haloalkanoyl, alkyl, alkenyl, alkynyl, alkenyloxy, alkenyloxyalky, alkylenedioxy, haloalkylenedioxy, cycloalkyl, cycloalkylalkanoyl, cycloalkenyl, cycloalkylalkyl, cycloalkenylalkyl, halo, haloalkyl, haloalkenyl, haloalkoxy, hydroxyhaloalkyl, hydroxyaralkyl, hydroxyalkyl, aminoalkyl, hydoxyheteroaralkyl, haloalkoxyalkyl, aryl, aralkyl, aryloxy, aralkoxy, aryloxyalkyl, saturated heterocyclyl, partially saturated heterocyclyl, heteroaryl, heteroaryloxy, heteroaryloxyalkyl, arylalkyl, heteroaralkyl, arylalkenyl, heteroarylalkenyl, carboxyalkyl, carboalkoxy, alkoxycarbonyl, carboaralkoxy, carboxamido, carboxamidoalkyl, cyano, carbohaloalkoxy, phosphono, phosphonoalkyl, diaralkoxyphosphono, and diaralkoxyphosphonoalkyl.

The term “spacer” can include a covalent bond and a linear moiety having a backbone of 1 to 7 contiguous atoms. The spacer may have 1 to 7 atoms of a univalent or multi-valent chain. Univalent chains may be constituted by a radical selected from ═C(H)—, ═C(R^2a)—, —O—, —S—, —S(O)—, —S(O)₂—, —NH—, —N(R^2a)—, —N═, —CH(OH)—, ═C(OH)—, —CH(OR²¹)—, ═C(OR^2a)—, and —C(O)— wherein R^2a is selected from alkyl, alkenyl, alkynyl, aryl, heteroaryl, aralkyl, aryloxyalkyl, alkoxyalkyl, alkylthioalkyl, arylthioalkyl, cycloalkyl, cycloalkylalkyl, haloalkyl, haloalkenyl, haloalkoxyalkyl, perhaloaralkyl, heteroarylalkyl, heteroaryloxyalkyl, heteroarylthioalkyl, and heteroarylalkenyl. Multi-valent chains may consist of a straight chain of 1 or 2 or 3 or 4 or 5 or 6 or 7 atoms or a straight chain of 1 or 2 or 3 or 4 or 5 or 6 atoms with a side chain. The chain may be constituted of one or more radicals selected from: alkylene, alkenyl, —O—, —O—CH₂—, —S—CH₂—, —CH₂CH₂—, ethenyl, —CH═CH(OH)—, —OCH₂O—, —O(CH₂)₂O—, —NHCH₂—, —OCH(R^2a)O—, —O(CH₂CHR^2a)O—, —OCF₂O—, —O(CF₂)₂O—, —S—, —S(O)—, —S(O)₂—, —N(H)—, —N(H)O—, —N(R^2a)—, —N(R^2a)—, —C(O)—, —C(O)NH—, —C(O)NR^2a—, —N═, —OCH₂—, —SCH₂—, S(O)CH₂—, —CH₂C(O)—, —CH(OH)—, ═C(OH)—, —CH(OR^2a)—, ═C(OR^2a)—, S(O)₂CH₂—, and —NR^2aCH₂— and many other radicals defined above or generally known or ascertained by one of skill-in-the art. Side chains may include substituents such as 1 or more non-hydrido substituents such as amidino, guanidino, dialkylsulfonium, trialkylphosphonium, dialkylsulfoniumalkyl, perhaloaralkyl, aralkylsulfonyl, aralkylsulfonylalkyl, aralkylsulfinyl, aralkylsulfinylalkyl, halocycloalkyl, halocycloalkenyl, cycloalkylsulfinyl, cycloalkylsulfinylalkyl, cycloalkylsulfonyl, cycloalkylsulfonylalkyl, heteroarylamino, N-heteroarylamino-N-alkylamino, heteroaralkylamino, heteroaryloxy, heteroaryloxylalkyl, haloalkylthio, alkanoyloxy, alkoxy, alkoxyalkyl, haloalkoxylalkyl, heteroaralkoxy, cycloalkoxy, cycloalkenyloxy, cycloalkoxyalkyl, cycloalkylalkoxy, cycloalkenyloxyalkyl, cycloalkylenedioxy, halocycloalkoxy, halocycloalkoxyalkyl, halocycloalkenyloxy, halocycloalkenyloxyalkyl, hydroxy, amino, thio, nitro, alkylamino, alkylthio, alkylthioalkyl, arylamino, aralkylamino, arylthio, arylthioalkyl, heteroaralkoxyalkyl, alkylsulfinyl, alkylsulfinylalkyl, arylsulfinylalkyl, arylsulfonylalkyl, heteroarylsulfinylalkyl, heteroarylsulfonylalkyl, alkylsulfonyl, alkylsulfonylalkyl, haloalkylsulfinylalkyl, haloalkylsulfonylalkyl, alkylsulfonamido, alkylaminosulfonyl, amidosulfonyl, monoalkylamiodosulfonyl, dialkylamidosulfonyl, monoarylamidosulfonyl, arylsulfonamido, diarylamidosulfonyl, monoalkylmonoarylamidosulfonyl, arylsulfinyl, arylsulfonyl, heteroarylthio, heteroarylsulfinyl, heteroarylsulfonyl, alkanoyl, alkenoyl, aroyl, heteroaroyl, aralkanoyl, heteroaralkanoyl, haloalkanoyl, alkyl, alkenyl, alkynyl, alkenyloxy, alkenyloxyalky, alkylenedioxy, haloalkylenedioxy, cycloalkyl, cycloalkenyl, cycloalkylalkyl, cycloalkenylalkyl, halo, haloalkyl, haloalkenyl, haloalkoxy, hydroxyhaloalkyl, hydroxyaralkyl, hydroxyalkyl, aminoalkyl, hydoxyheteroaralkyl, haloalkoxyalkyl, aryl, aralkyl, aryloxy, aralkoxy, aryloxyalkyl, saturated heterocyclyl, partially saturated heterocyclyl, heteroaryl, heteroaryloxy, heteroaryloxyalkyl, arylalkyl, heteroarylalkyl, arylalkenyl, heteroarylalkenyl, carboxyalkyl, carboalkoxy, carboaralkoxy, carboxamido, carboxamidoalkyl, cyano, carbohaloalkoxy, phosphono, phosphonoalkyl, diaralkoxyphosphono, and diaralkoxyphosphonoalkyl.

Compounds of the present invention can exist in tautomeric, geometric or stereoisomeric forms. The present invention contemplates all such compounds, including cis- and trans-geometric isomers, E- and Z-geometric isomers, R- and S-enantiomers, diastereomers, d-isomers, 1-isomers, the racemic mixtures thereof and other mixtures thereof, as falling within the scope of the invention. Pharmaceutically acceptable sales of such tautomeric, geometric or stereoisomeric forms are also included within the invention.

The terms “cis” and “trans” denote a form of geometric isomerism in which two carbon atoms connected by a double bond will each have a hydrogen atom on the same side of the double bond (“cis”) or on opposite sides of the double bond (“trans”).

Some of the compounds described contain alkenyl groups, and are meant to include both cis and trans or “E” and “Z” geometric forms.

Some of the compounds described contain one or more stereocenters and are meant to include R, S, and mixtures of R and S forms for each stereocenter present.

Some of the compounds described herein may contain one or more ketonic or aldehydic carbonyl groups or combinations thereof alone or as part of a heterocyclic ring system. Such carbonyl groups may exist in part or principally in the “keto” form and in part or principally as one or more “enol” forms of each aldehydic and ketone group present. Compounds of the present invention having aldehydic or ketonic carbonyl groups are meant to include both “keto” and “enol” tautomeric forms.

Some of the compounds described herein may contain one or more amide carbonyl groups or combinations thereof alone or as part of a heterocyclic ring system. Such carbonyl groups may exist in part or principally in the “keto” form and in part or principally as one or more “enol” forms of each amide group present. Compounds of the present invention having amidic carbonyl groups are meant to include both “keto” and “enol” tautomeric forms. Said amide carbonyl groups may be both oxo (C═O) and thiono (C═S) in type.

Some of the compounds described herein may contain one or more imine or enamine groups or combinations thereof. Such groups may exist in part or principally in the “imine” form and in part or principally as one or more “enamine” forms of each group present. Compounds of the present invention having said imine or enamine groups are meant to include both “imine” and “enamine” tautomeric forms.

The present invention also comprises a treatment and prophylaxis in anticoagulant therapy for the treatment and prevention of a variety of thrombotic conditions including coronary artery and cerebrovascular disease in a subject, comprising administering to the subject having such disorder a therapeutically-effective amount of a compound of Formula (I): or a pharmaceutically-acceptable salt thereof.

As a further embodiment, compounds of the present invention of Formula (I) or a pharmaceutically-acceptable salt thereof as defined above, comprise a treatment and prophylaxis of coronary artery disease, cerebrovascular disease and other coagulation cascade related disorders in a subject, comprising administering to the subject having such disorder a therapeutically-effective amount of compounds of formula (I) of the present invention or a pharmaceutically-acceptable salt thereof.

Compounds of the present invention of Formula (I) or a pharmaceutically-acceptable salt thereof can also be used whenever inhibition of blood coagulation is required such as to prevent coagulation of stored whole blood and to prevent coagulation in other biological samples for testing or storage. Thus coagulation inhibitors of the present inhibition can be added to or contacted with stored whole blood and any medium containing or suspected of containing plasma coagulation factors and in which it is desired that blood coagulation be inhibited, e.g. when contacting the mammal's blood with material selected from the group consisting of vascular grafts, stents, orthopedic prothesis, cardiac prosthesis, and extracorporeal circulation systems.

Compounds of Formula (I) are capable of inhibiting activity of serine proteases related to the coagulation cascade, and thus could be used in the manufacture of a medicament, a method for the prophylactic or therapeutic treatment of diseases mediated by coagulation cascade serine proteases, such as inhibiting the formation of blood platelet aggregates, inhibiting the formation of fibrin, inhibiting thrombus formation, and inhibiting embolus formation in a mammal, in blood, in blood products, and in mammalian organs. The compounds also can be used for treating or preventing unstable angina, refractory angina, myocardial infarction, transient ischemic attacks, atrial fibrillation, thrombotic stroke, embolic stroke, deep vein thrombosis, disseminated intravascular coagulation, ocular build up of fibrin, and reocclusion or restenosis of recanalized vessels in a mammal. The compounds also can be used to study the mechanism of action of coagulation cascade serine proteases to enable the design of better inhibitors and development of better assay methods. The compounds of Formula (I) would be also useful in prevention of cerebral vascular accident (CVA) or stroke.

Also included in the family of compounds of Formula (I) are the pharmaceutically-acceptable salts thereof. The term “pharmaceutically-acceptable salt” embraces salts commonly used to form alkali metal salts and to form addition salts of free acids or free bases. The nature of the salt is not critical, provided that it is pharmaceutically acceptable. Suitable pharmaceutically-acceptable acid addition salts of compounds of Formula (I) may be prepared from inorganic acid or from an organic acid. Examples of such inorganic acids are hydrochloric, hydrobromic, hydroiodic, nitric, carbonic, sulfuric and phosphoric acid. Appropriate organic acids may be selected from aliphatic, cycloaliphatic, aromatic, araliphatic, heterocyclic, carboxylic and sulfonic classes of organic acids, examples of which are formic, acetic, propionic, succinic, glycolic, gluconic, lactic, malic, tartaric, citric, ascorbic, glucoronic, maleic, fumaric, pyruvic, aspartic, glutaric, benzoic, anthranilic, mesylic, salicylic, p-hydroxybenzoic, phenylacetic, mandelic, embonic (pamoic), methanesulfonic, ethylsulfonic, benzenesulfonic, sulfanilic, stearic, cyclohexylaminosulfonic, algenic, galacturonic acid. Suitable pharmaceutically-acceptable base addition salts of compounds of Formula (I) include metallic salts made from aluminum, calcium, lithium, magnesium, potassium, sodium and zinc or organic salts made from N,N′-dibenzylethyleneldiamine, choline, chloroprocaine, diethanolamine, ethylenediamine, meglumine (N-methylglucamine) and procain. All of these salts may be prepared by conventional means from the corresponding compound of Formula (I) by reacting, for example, the appropriate acid or base with the compound of Formula (I).

The present invention also comprises a pharmaceutical composition comprising a therapeutically-effective amount of a compound of Formula (I) in association with at least one pharmaceutically-acceptable carrier, adjuvant or diluent. Pharmaceutical compositions of the present invention can comprise the active compounds of Formula (I) in association with one or more non-toxic, pharmaceutically-acceptable carriers and/or diluents and/or adjuvants (collectively referred to herein as “carrier” materials) and, if desired, other active ingredients. The active compounds of the present invention may be administered by any suitable route, preferably in the form of a pharmaceutical composition adapted to such a route, and in a dose effective for the treatment intended.

The active compounds and composition may, for example, be administered orally, intravascularly, intraperitoneally, subcutaneously, intramuscularly, oculary, or topically. For treating ocular build up of fibrin, the compounds may be administered intraocularly or topically as well as orally or parenterally. The compounds can be administered in the form of a depot injection or implant preparation which may be formulated in such a manner as to permit a sustained release of the active ingredient. The active ingredient can be compressed into pellets or small cylinders and implanted subcutaneously or intramusculary as depot injections or implants. Implants may employ inert materials such as biodegradable polymers or synthetic silicones, for example. Silastic, silicone rubber or other silicon containing polymers.

The compounds can also be administered in the form of liposome delivery systems, such as small unilamellar vesicles, large unilamellar vesicles and multilamellar vesicles. Liposomes can be formed from a variety of phospholipids, such as cholesterol, stearylamine or phosphatidylcholines.

The compounds may also be delivered by the use of monoclonal antibodies as individual carriers to which the compound molecules are coupled. The compounds may also be coupled with soluble polymers as targetable drug carriers. Such polymers can include polyvinylpyrrolidone, pyran copolymer, polyhydroxy-propyl-methacrylamide-phenol, polyhydroxyethyl-aspartamide-phenol, or ployethyleneoxide-polylysine substituted with palmitoyl residues. Furthermore, the compounds may be coupled to a class of biodegradable polymers useful in achieving controlled release of a drug, for example, polylactic acid, polyglycolic acid, copolymers of polylactic and polyglycolic acid, polyepsilon caprolactone, polyhydroxy butyric acid, polyorthoesters, polyacetals, polydihydropyrans, polycyanoacrylates and cross linked or amphitpathic block copolymers of hydrogels.

For oral administration, the pharmaceutical composition may be in the form of, for example, tablets, capsules (each of which includes sustained release or timed release formulations), pills, powders, granules, elixers, tinctures, suspensions, liquids including syrups, and emulsions. The pharmaceutical composition is preferably made in the form of a dosage unit containing a particular amount of the active ingredient. Examples of such dosage units are tablets or capsules. The active ingredient may also be administered by injection as a composition wherein, for example, saline, dextrose or water may be used as a suitable carrier.

The amount of therapeutically active compounds which are administered and the dosage regimen for treating a disease condition with the compounds and/or compositions of this invention depends on a variety of factors, including the age, weight, sex and medical condition of the subject, the severity of the disease, the route and frequency of administration, and the particular compound employed, and thus may vary widely.

The pharmaceutical compositions may contain active ingredients in the range of about 0.1 to 2000 mg, and preferably in the range of about 0.5 to 500 mg. A daily dose of about 0.01 to 100 mg/kg body weight, and preferably between about 0.5 and about 20 mg/kg body weight, may be appropriate. The daily dose can be administered in one to four doses per day.

The compounds may be formulated in topical ointment or cream, or as a suppository, containing the active ingredients in a total amount of, for example, 0.075 to 30% w/w, preferably 0.2 to 20% w/w and most preferably 0.4 to 15% w/w. When formulated in an ointment, the active ingredients may be employed with either paraffinic or a water-miscible ointment base.

Alternatively, the active ingredients may be formulated in a cream with an oil-in-water cream base. If desired, the aqueous phase of the cream base may include, for example at least 30% w/w of a polyhydric alcohol such as propylene glycol, butane-1,3-diol, mannitol, sorbitol, glycerol, polyethylene glycol and mixtures thereof. The topical formulation may desirably include a compound which enhances absorption or penetration of the active ingredient through the skin or other affected areas. Examples of such dermal penetration enhancers include dimethylsulfoxide and related analogs. The compounds of this invention can also be administered by a transdermal device. Preferably topical administration will be accomplished using a patch either of the reservoir and porous membrane type or of a solid matrix variety. In either case, the active agent is delivered continuously from the reservoir or microcapsules through a membrane into the active agent permeable adhesive, which is in contact with the skin or mucosa of the recipient. If the active agent is absorbed through the skin, a controlled and predetermined flow of the active agent is administered to the recipient. In the case of microcapsules, the encapsulating agent may also function as the membrane.

The oily phase of the emulsions of this invention may be constituted from known ingredients in a known manner. While the phase may comprise merely an emulsifier, it may comprise a mixture of at least one emulsifier with a fat or an oil or with both a fat and an oil. Preferably, a hydrophilic emulsifier is included together with a lipophilic emulsifier which acts as a stabilizer. It is also preferred to include both an oil and a fat. Together, the emulsifier(s) with or without stabilizer(s) make-up the so-called emulsifying wax, and the wax together with the oil and fat make up the so-called emulsifying ointment base which forms the oily dispersed phase of the cream formulations. Emulsifiers and emulsion stabilizers suitable for use in the formulation of the present invention include Tween 60, Span 80, cetostearyl alcohol, myristyl alcohol, glyceryl monostearate, and sodium lauryl sulfate, among others.

The choice of suitable oils or fats for the formulation is based on achieving the desired cosmetic properties, since the solubility of the active compound in most oils likely to be used in pharmaceutical emulsion formulations is very low. Thus, the cream should preferably be a non-greasy, non-staining and washable product with suitable consistency to avoid leakage from tubes or other containers. Straight or branched chain, mono- or dibasic alkyl esters such as diisoadipate, isocetyl stearate, propylene glycol diester of coconut fatty acids, isopropyl myristate, decyl oleate, isopropyl palmitate, butyl stearate, 2-ethylhexyl palmitate or a blend of branched chain esters may be used. These may be used alone or in combination depending on the properties required. Alternatively, high melting point lipids such as white soft paraffin and/or liquid paraffin or other mineral oils can be used.

For therapeutic purposes, the active compounds of the present invention are ordinarily combined with one or more adjuvants appropriate to the indicated route of administration. If administered per os, the compounds may be admixed with lactose, sucrose, starch powder, cellulose esters of alkanoic acids, cellulose alkyl esters, talc, stearic acid, magnesium stearate, magnesium oxide, sodium and calcium salts of phosphoric and sulfuric acids, gelatin, acacia gum, sodium alginate, polyvinylpyrrolidone, and/or polyvinyl alcohol, and then tableted or encapsulated for convenient administration. Such capsules or tablets may contain a controlled-release formulation as may be provided in a dispersion of active compound in hydroxypropylmethyl cellulose. Formulations for parenteral administration may be in the form of aqueous or non-aqueous isotonic sterile injection solutions or suspensions. These solutions and suspensions may be prepared from sterile powders or granules having one or more of the carriers or diluents mentioned for use in the formulations for oral administration. The compounds may be dissolved in water, polyethylene glycol, propylene glycol, ethanol, corn oil, cottonseed oil, peanut oil, sesame oil, benzyl alcohol, sodium chloride, and/or various buffers. Other adjuvants and modes of administration are well and widely known in the pharmaceutical art.

In practicing the methods of the present invention for the treatment and prevention of a variety of thrombotic conditions including coronary artery and cerebrovascular disease, the compounds and pharmaceutical compositions of the present invention are administered alone or in combination with one another, or in combination with other therapeutics or in vivo diagnostic agents. The coagulation cascade inhibitors of the present invention can also be co-administered with suitable anti-platelet agreggation agents, including, but not limited to ticlopidine or clopidrogel, fibrinogen receptor antagonists (e.g. to treat or prevent unstable angina or to prevent reocculsion after angioplasty and restenosis), anti-coagulants such as aspirin, warfarin or heparins, thrombolytic agents such as plasminogen activators or streptokinase to achieve synergistic effects in the treatment of various pathologies, lipid lowering agents including antihypercholesterolemics (e.g. HMG CoA reductase inhibitors such as mevastatin, lovastatin, simvastatin, pravastatin, and fluvastatin, HMG CoA synthatase inhibitors, etc.), anti-diabetic drugs, or other cardiovascular agents (loop diuretics, thiazide type diuretics, nitrates, aldosterone antagonistics (i.e., spironolactone and epoxymexlerenone), angiotensin converting enzyme (e.g. ACE) inhibitors, angiotensin II receptor antagonists, beta-blockers, antiarrythmics, anti-hypertension agents, and calcium channel blockers) to treat or prevent atheriosclerosis. For example, patients suffering from coronary artery disease, and patients subjected to angioplasty procedures, would benefit from coadministration of fibrinogen receptor antagonists and coagulation cascade inhibitors of the present invention. Also, coagulation cascade inhibitors could enhance the efficiency of tissue plasminogen activator-mediated thrombolytic reperfusion.

Typical doses of coagulation cascade inhibitors of the present invention with other suitable anti-platelet agents, anticoagulation agents, cardiovascular therapeutic agents, or thrombolytic agents may be the same as those doses of coagulation cascade inhibitors administered without coadministration of additional anti-platelet agents, anticoagulation agents, cardiovascular therapeutic agents, or thrombolytic agents, or may be substantially less than those doses of coagulation cascade inhibitors administered without coadministration of additional anti-platelet agents, anticoagulation agents, cardiovascular therapeutic agents, or thrombolytic agents, depending on a patient's therapeutic needs.

The present novel methods preferably employ compounds which selectively inhibit human TF-VIIA over the inhibition of both human Thrombin II and human factor Xa. Preferably, the compounds have a human TF-VIIA IC₅₀ of less than 0.5 μM and also have a selectivity ratio of TF-VIIA inhibition over both human Thrombin II and human factor Xa inhibition of at least 10, and more preferably at least 100. Even more preferably, the compounds have a human TF-VIIA IC₅₀ of less than 0.1 μM and also have a selectivity ratio of TF-VIIA inhibition over both human Thrombin II and human factor Xa inhibition of at least 1000, and most preferably at least 10,000.

All mentioned references are incorporated by reference as if here written.

Although this invention has been described with respect to specific embodiments, the details of these embodiments are not to be construed as limitations. The following examples are provided to illustrate the present invention and are not intended to limit the scope thereof. Without further elaboration, it is believed that one skilled in the art can, using the preceding descriptions, utilize the present invention to its fullest extent. Therefore the following preferred specific embodiments are to be construed as merely illustrative and not limitative of the remainder of the disclosure in any way whatsoever. Compounds containing multiple variations of the structural modifications illustrated in the schemes or the following Examples are also contemplated. Those skilled in the art will readily understand that known variations of the conditions and processes of the following preparative procedures can be used to prepare these compounds.

One skilled in the art may use these generic methods to prepare the following specific examples, which have been or may be properly characterized by ¹H NMR, mass spectrometry, elemental composition, and similar procedures. These compounds also may be formed in vivo. The following examples contain detailed descriptions of the methods of preparation of compounds of Formula (I). These detailed descriptions fall within the scope and are presented for illustrative purposes only and are not intended as a restriction on the scope of the invention. All parts are by weight and temperatures are Degrees centigrade unless otherwise indicated.

The following general synthetic sequences are useful in making the present invention. Abbreviations used in the schemes and tables include: “AA” represents amino acids, “AcCN” represents acetonitrile, “AcOH” represents acetic acid, “BINAP” represents 2,2′-bis(diphenylphosphino)-1,1′-binaphthyl. “BnOH” represents benzyl alcohol, “BnCHO” represents 2-phenylethanal, “BnSO₂Cl” represents benzylsulfonyl chloride, “Boc” represents tert-butyloxycarbonyl, “BOP” represents benzotriazol-1-yl-oxy-tris-(dimethylamino), “bu” represents butyl, “dba” represents dibenzylidene-acetone, “DCC” represents 1,3-dicyclohexylcarbodiimide, “DCM” represents dichloromethane or methylene chloride, “DIBAH” or “DIBAL” represents diisobutylaluminum hydride, “DMF” represents dimethylformamide, “DMSO” represents dimethylsulfoxide, “DPPA” represents “diphenylphosphorylazide”, “EDC” represents 1-[3-(dimethylamino)propyl]-3-ethylcarbodimide hydrochloride, “Ex. No.” represents Example Number, “Fmoc” represents 9-fluorenylmethoxycarbonyl, “HOBt” represents “hydroxybenzoltriazole”, “LDA” represents lithium diisopropylamide, “MW” represents molecular weight, “NMM” represents N-methylmorpholine, “Ph” represents phenyl or aryl, “PHTH” represents a phthaloyl group, “pnZ” represents 4-nitrobenzyloxy-carbonyl, “PTC” represents a phase transfer catalyst, “py” represents pyridine, “RNH₂” represents a primary organic amine, “p-TsOH” represents paratoluenesulfonic acid, “TBAF” represents tetrabutylammonium fluoride, “TBTU” represents 2-(1H-benzotriozole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate, “TEA” represents triethylamine, “TFA” represents trifluoroacetic acid, “THF” represents tetrahydrofuran, “TMS” represents trimethylsilyl, “TMSCN” represents trimethylsilyl cyanide, and “Cbz” or “Z” represents benzyloxycarbonyl.

GENERAL SYNTHETIC PROCEDURES AND SPECIFIC EXAMPLES

The compounds of the present invention can be synthesized, for example, according to the following procedures and Schemes given below.

The general synthetic approach to substituted pyrazinones is shown in Schemes 1 and 2 below. Treatment of benzyl glycine under Strecker reaction conditions followed by cyclocondensation with oxalyl chloride provides the pyrazinone heterocyclic core with an acetic acid ester at N-1. Heating a solution of the pyrazinone in ethyl acetate in the presence of excess amine results in the nucleophilic displacement of the C-3 chlorine atom by the amine. Stirring the substituted pyrazinone in the presence of lithium hydroxide results in the unmasking of the acid functional group. Alternatively, treatment of the pyrazinone with potassium hydroxide and catalytic palladium on carbon under an atmosphere of hydrogen results in the reductive dechlorination of the C-5 chlorine atom as well as the unmasking of the acid functional group. These acids are then coupled under standard peptide coupling conditions with various amines. These amines are typically multi-functional, and are introduced in a protected form. Removal of these protecting groups in any of several ways provides the compounds for screening These synthetic schemes are exemplified in specific examples disclosed herein.

Example 1

A solution of benzyl glycine hydrochloride (78.00 g, 386.8 mmol) in 1.2 L ethyl acetate was washed with brine and saturated Na₂CO₃ (1:1, 3×1 L). The organic solution was dried (MgSO₄), filtered, and concentrated. The resulting light yellow oil was placed on the high vacuum for approximately 15 minutes to remove residual solvent. The yellow oil was then diluted with 137.0 mL dichloromethane (2.82 M) and added benzaldehyde (39.30 mL, 386.6 mmol) slowly by syringe at room temperature. The reaction becomes slightly exothermic and turbid. The mixture was then added trimethylsilyl nitrile (51.60 mL, 386.9 mmol) drop wise via syringe over a 10 minute period, upon which a slight exotherm occurs and the reaction becomes clear and golden brown in color. The reaction was stirred for 4 hours at room temperature. The reaction mixture was then concentrated under reduced pressure . The resulting brown oil was diluted with ethyl acetate (500.0 mL), washed with brine (3×150 mL), dried (MgSO₄), and concentrated to leave a yellow oil. The oil was diluted ethyl acetate (80 mL) and added 9.9 M HCl (406.4 mmol) in ethanol (prepared by addition of 28.90 mL acetyl chloride to 41.0 mL cold ethanol). Upon which a white precipitate forms exothermically. The precipitate was collected by filtration, washed with ethyl ether, and dried which cave pure benzyl-N-(1-cyanobenzyl)glycine hydrochloride (EX-1A) in 35% yield: ¹H NMR (300 MHz, DMSO) δ 9.13-9.00 (br s, 1H) 7.68-7.60 (m, 2H). 7.55-7.32 (m, 8H) 5.70 (s, 1H), 5.19 (s, 2H), 3.81 (d, J=5.4 Hz, 1H); ¹³ C NMR (75 MHz, DMSO) d 168.6, 136.1, 130.7, 129.78, 129.49, 129.17, 128.99, 128.92, 127.10, 67.3, 51.7, 47.1; HRMS (ES) calcd for C₁₇H₁₇N₂O₂ 281.1290, found 281.1311.

A suspension of benzyl-N-(1-cyanobenzyl)glycine hydrochloride (EX-1A) (42.90 g, 135.4 mmol) in 135.0 mL dry 1,2-dichlorobenzene (1.0 M) was added to oxalyl chloride (47.50 mL, 544.5 mmol) with stirring at room temperature. The resulting light brown suspension was heated to 100° C. for approximately 18 hours. Upon heating to mixture 100° C., the mixture became homogeneous and dark brown in color with gaseous HCl being evolved. The reaction was allowed to cool to room temperature and the volatiles were removed under reduced pressure. The remaining solution was passed through a silica gel column (1 L hexane flush, followed by 2 L 50% ethyl acetate/hexanes). Concentration of the solution gave a dark brown solid. The crude product was purified by MPLC (2 L hexane flush to 25% ethyl acetate/hexanes) to gave pure 1-Benzyloxycarbonylmethyl-3,5dichloro-6-phenylpyrazinone (EX-1B) in 60% yield as a yellow solid: ¹H NMR (300 MHz, CDCl₃) δ 7.58-7.37 (m, 6H), 7.31-7.26 (m, 4H), 5.18 (s, 2H), 4.53 (s, 2H); ¹³C NMR (75 MHz, CDCl₃) δ 166.4, 152.4, 146.0, 1383, 134.9, 131.1, 130.0, 129.8, 129.1, 129.0, 128.8, 1243, 68.2, 49.5; HRMS (ES) calcd for Cl₉H₁₅Cl₂N₂O₃ 389.0460, found 389.0475.

A solution of 1-benzyloxycarbonylmethyl-3,5-dichloro-6-phenylpyrazinone (EX-1B), (10.19 g, 26.19 mmol) in 103.0 mL ethyl acetate (0.255M) was added 9.90 mL phenethyl amine in one portion at room temperature. The resulting solution was heated to reflux for 18 hours. The solution was allowed to cool to room temperature which resulted in a thick precipitate forming. The reaction mixture was diluted with ethyl acetate (750.0 mL) and was washed with 0.5 N HCl (1×250 mL), saturated NaHCO₃ (1×250 mL) and brine (1×250 mL). The organic solution was dried (MgSO₄), filtered and concentrated to give the crude product. Recrystallization from ethyl acetate and hexanes afforded pure 3-(2-phenylethylamino)-5chloro-6-phenyl-1-benzyloxycarbonylmethylpyrazinone (EX-1C) as light yellow crystals in 96% yield: ¹H NMR (300 MHz, CDCl₃) δ 7.46-7.28 (m, 15H), 6.39 (br s, 1H), 5.25 (s, 2H), 4.54 (s, 2H), 3.81-3.79 (m, 2H), 3.04-3.00 (m, 2H); ¹³C NMR (75 MHz, CDCl₃) δ 167.2, 1513, 149.2, 138.9, 135.2. 131.9, 130.7, 129.9, 129.3, 129.0, 128.95, 128.86, 128.83, 128.7, 126.9, 123.3, 67.7, 47.9, 42.5, 35.4; HRMS (EI) calcd for C₂₇H₂₅ClN₃O₃ 474.1584, found 474.1591.

A suspension of 3-(2-phenylethylamino)-5-chloro-6-phenyl-1-benzyloxycarbonylmethylpyrazinone (EX-1C), (1.26 g 7.66 mmol) in 27.0 mL tetrahydrofuran and ethanol (1:1, 0.12 M) was added potassium hydroxide (463.1 mg, 8.25 mmol) in 4.0 mL water. The resulting solution was degassed (via high vacuum) three times. The solution was then added 421.1 mg 5% Pd/C in one portion. The resulting mixture was then stirred under an atmosphere of hydrogen overnight. The reaction mixture was filtered through a pad of Celite 545 then concentrated under reduced pressure to half of the original volume. The solution was then diluted with brine and acidified with 20% (w/w) KHSO₄ to a pH of 1. The resulting turbid solution was extracted with ethyl acetate (4×25 mL). The combined organic solutions were washed with brine (1×25 mL), dried (MgSO₄). filtered, concentrated to give pure 3-(2-phenylethylamino)-6phenyl-1-methylenecarboxypyrazinone (EX-1D) in 97% yield as a white solid: ¹H NMR (300 MHz, DMSO) δ 7.49-7.48 (m, 3H), 7.40-7.23 (m, 7H), 6.77 (s, 1H), 4.52 (s, 1H), 4.40 (s, 2H), 3.64-3.57 (m, 2H), 2.93 (t, J=7.4 Hz, 2H); ¹³C NMR (75 MHz, DMSO) δ 169.6, 151.8, 150.6, 150.5, 143.2, 140.3, 133.2, 130.2, 129.6, 129.4, 129.3, 129.1, 128.8, 128.7, 127.3, 127.1, 126.8, 122.3, 63.6, 47.5, 42.5, 35.2; HRMS (EI) calcd for C₂₀H₂₀N₃O₃ 350.1505, found 350.1502.

p-Cyanobenzaldehyde (38.13 mmoles, 5 g) was stirred in 50 mL of tetrahydrofuran at 0° C. under nitrogen while lithium bis(trimethylsilyl)amide (83.89 mmoles, 84 mL of a 1.0 M solution in tetrahydrofuran) was added dropwise over 10 min. After addition the mixture was allowed to warm to room temperature and stirred for 3 hr. Water (50 mL) was then added and stirring continued for 30 min. Then 2.5N sodium hydroxide (763 mmoles,305 mL) and di-tert-butyl dicarbonate (83.89 mmoles, 18.309 g) were added along with tetrahydrofuran (100 mL) and the mixture was allowed to stir for 3 hr. The layers were then separated. The tetrahydrofuran layer was diluted with ethyl acetate and washed with brine. The water layer was extracted twice with ethyl acetate. The combined organic layers were dried over magnesium sulfate, filtered, the solvent removed in vacuo. The residue was chromatographed medium pressure liquid chromatography with 30% ethyl acetate/hexanes to give 4.03 g of desired 4-(t-butoxycarbonylamidino)-benzaldehyde in 43% yield. ¹H NMR (300 MHz, CDCl₃) δ 10.03 (s, 1H), 7.97 (d, 2H) 7.89 (d, 2H), 1.53 (s, 9H).

The 4(t-butoxycarbonylamidino)benzaldehyde (4.03 mmoles, 1.0 g) was stirred in tetrahydrofuran (20 mL) at room temperature under nitrogen while allylamine (6.05 mmoles, 453 uL) was added dropwise. After addition the mixture was allowed to stir for 6 hr. The mixture was diluted with methanol (20 mL) and cooled to 0° C. Then sodium borohydride (6.04 mmoles, 22.8 mg) added in small amounts and allowed to warm to room temperature. After 2 hr the reaction was quenched with water and extracted with dichloromethane. The organic layer was dried over magnesium sulfate, filtered, and the solvent removed in vacuo. The oily residue solidified on standing. The N-allyl-4-(t-butoxycarbonylamidino)-benzylamine product was used without further purification. ¹H NMR (300 MHz, CDCl₃) δ 7.79 (d, 2H), 7.37 (d, 2H), 5.90-6.10 (m, 1H), 5.19 (dd, 2H), 3.81 (s, 2H), 3.24 (d, 2H), 1.53 (s, 9H)

The N-allyl-4-(t-butoxycarbonylamidino)benzylamine (3.97 mmoles, 1.15 g) and chlorotris(triphenylphosphine)-rhodium(I) (0.21 mmoles, 195 mg) was stirred in acetonitrile/water (84:16, 92 mL) under nitrogen. The mixture was refluxed for 3 hr and allowed to cool to room temperature. Then the mixture was filtered through a pad of celite and the solvent removed in vacuo. The residue was dried on a high vacuum pump to yield an orange glassy product. 4-(t-Butoxycarbonylamidino)benzylamine product was verified by HPLC/MS and used without further purification.

A solution of 3-(2-phenethylamino)-6-phenyl-1-methylenecarboxypyrazinone (EX-1D) (521.1 mg, 1.491 mmol) in 15.0 mL tetrahydrofuran and dimethylformamide (1:1, 0.1 M) was added N,N-diisopropylethylamine (1.30 mL, 7.463 mmol), N-hydroxybenzotriazole (610.5 mg, 4.518 mmol), and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (855.3 mg, 4.461 mmol). The resulting mixture was allowed to stir for 30 minutes. The reaction mixture was then added 4-(t-butoxycarbonyl-amidino)benzylamine (763.1 mg, 3.061 mmol) prepared above in one portion. The resulting mixture was allowed to stir over night. The reaction mixture was diluted with ethyl acetate (50 mL) and washed with 5% citric acid (1×25 mL), saturated NaHCO₃ (1×25 mL), and brine (1×25 mL). The organic solution was dried (MNgSO₄), filtered and concentrated. The crude reaction was purified by MPLC (75% ethyl acetate/hexanes) to give the product (EX-1E): ¹H NMR (300 MHz. DMSO) δ 9.06 (br s, 1H), 8.65 (t, J=5.6 Hz, 1H), 7.94 (d, J=8.1 Hz, 2H), 7.47-7.40 (m, 6H), 7.35-7.21 (m, 8H), 6.75 (s, 1H), 4.41 (s, 2H), 4.36-4.34 (m, 2H). 3.63-3.57 (m, 2H), 2.93 (t, J=7.3 Hz, 2H), 1.48 (s, 9H); C NMR (75 MHz, DMSO) δ 167.3, 151.9, 150.7, 143.7, 140.4, 133.8, 133.4, 130.3, 129.4, 129.34, 129.29, 129.15, 129.10, 128.3, 127.6, 126.8, 122.2, 78.5, 48.7, 42.6, 35.2, 28.7; HRMS (EI) calcd for C₃₃H₃₇N₆O₄ 581.2876. found 581.2871.

A flask of protected pyrazinone (260.7 mg, 0.449 mmol) was added 5.0 mL of 4 M HCl in dioxane. The resulting solution was allowed to stir overnight (approximately 18 hours). The solution was concentrated and the crude product was triturated from ethyl ether. The resulting white solid was collected by filtration, washed with ethyl ether and dried to give pure product: ¹H NMR (300 MHz, DMSO) δ 9.57 (br s, 2H), 9.38 (br s, 2H), 9.06 (br s, 1H), 7.88 (d, J=7.9 Hz, 2H), 7.5-7.52 (m, 3H), 7.42-7.24 (m, 9H), 6.66 (s, 1H), 4.43 (s, 2H), 438-4.37 (m, 2H), 3.83 (br s, 2H), 3.03-2.98 (m, 2H); HRMS (EI) calcd for C₂₈H₂₉N₆O₂ 481.2352, found 481.2348.

Example 2

By following the method of Example 1 and substituting phenylacetaldehyde for benzaldehyde, the compound was prepared: ¹H NMR (400 MHz, DMSO) δ 9.43 (s, 2H), 9.25 (s, 2H), 8.84 (br s, 1H), 7.79 (d, J=8.1 Hz, 2H), 7.40-7.16 (m, 12H), 6.61 (s, 1H), 4.47 (s, 2H), 4.27 (s, 2H), 3.86 (s, 2H), 3.75 (br s, 2H), 2.94-2.90 (m, 2H); HRMS (EI) calcd for C₂₉H₃₀N₆O₂ 494.2430, found 494.2438.

Example 3

A suspension of 3-(2-phenylethylamino)-5-chloro-6-phenyl-1-benzyloxycarbonylmethylpyrazinone (1.35 g, 2.85 mmol) in 28.0 mL tetrahydrofuran, methanol and water (3:3:1, 0.10 M) was added potassium hydroxide (0.50 g, 8.93 mmol). The mixture was then stirred 3 hours. The reaction mixture was concentrated under reduced pressure to half of the original volume. The solution was then diluted with brine and acidified with 20% (w/w) KHSO₄ to a pH of 1. The resulting turbid solution was extracted with ethyl acetate (4×25 mL). The combined organic solutions were washed with brine (1×25 mL), dried (MgSO₄), filtered, concentrated to give pure EX-3A (3-(2-phenethylamino)-5-chloro-6-phenyl-1-methylenecarboxypyrazinone) in 88% yield as a white solid: ¹H NMR (300 MHz, DMSO) δ 13.15 (br s, 1H), 7.84 (br s, 1H), 7.51-7.50 (br m, 3H), 7.33-7.24 (m, 7H), 4.24 (s, 2H), 3.58 (br s, 2H), 2.94 (br s, 2H); ¹³C NMR (75 MHz, DMSO) δ 169.2, 151.0, 149.6, 140.1, 132.4, 131.1, 130.2, 129.6, 129.3, 129.1, 126.9, 125.4, 123.4, 48.1, 42.8, 34.8; HRMS (EI) calcd for C₂₀H₁₉ClN₃O₃ 384.1115, found 384.1118.

A solution of (S)—N-[[[4amino-5-oxo-5-(thiazolyl)pentyl]amino]iminomethyl]methoxy-2,3,6-trimethylbenzenesulfonamide dihydrochloride (1.664 g, 3.161 mmol) in 29.0 mL tetrahydrofuran and dimethylformamide (1:1, 0.10 M) was added N,N-diisopropylethylamine (5.00 mL, 28.70 mmol). The resulting mixture was allowed to stir for 10 minutes at room temperature. The solution was then added 3-(2-Phenylethylamino)-5chloro-6-phenyl-1-methylenecarboxypyrazinone (1.104 g, 2.877 mmol), N-hydroxybenzotriazole (466.8 mg, 3.454 mmol), and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (673.1 mg, 3.511 mmol). After the addition was complete the solution was allowed to stir over night. The reaction mixture was diluted with ethyl acetate (50 mL). The organic solution was washed with 5% citric acid (1×25 mL), saturated NaHCO₃ (1×25 mL), and brine (1×25 mL). The organic solution was dried (MgSO₄), filtered and concentrated. The crude reaction mixture was purified by MPLC (75% ethyl acetate/hexanes) to give pure product EX-3B: ¹H NMR (300 MHz, CDCl₃) δ 8.04 (d, J=3.0 Hz, 1H), 7.75 (d, J=2.8 Hz, 1H), 7.57 (br s, 1H), 7.42-7.21 (m. 11H), 6.54 (s, 2H), 6.31 (s, 2H), 5.63 (br s, 1H), 4.60 (d, J=16.2 Hz, 1H), 4.21 (d, J=16.5 Hz, 1H), 3.84 (s, 3H), 3.77-3.66 (m, 2H), 3.17 (br s, 1H), 2.96 (d, J=7.2 Hz, 2H), 2.68 (s, 3H), 2.60 (s, 3H), 2.14 (s, 3H), 1.79-1.66 (m, 3H); HRMS (EI) calcd for C₃₉H₄₄ClN₈O₆S₂ 819.2514, found 819.2512.

A solution of material EX-3B (928.1 mg, 1.133 mmol) in 11.3 mL trifluoroacetic acid (0.1 M) was added to thioanisole (0.400 mL, 3.407 mmol) at room temperature with stirring. The resulting mixture was allowed to stir 6 hours. The reaction mixture was concentrated under reduced pressure. The crude product was purified by trituration from ethyl ether. A yellow powder was collected by filtration, washed with ethyl ether to give the pure product: ¹H NMR (300 MHz, DMF) δ 8.76 (d, J=7.2 Hz, 1H), 8.51-8.50 (m, 1H), 8.42-8.41 (m, 1H), 8.17 (br s, 1H), 7.92-7.45 (m, 10H), 5.74 (br s, 1H), 4.67-4.65 (m, 2H), 3.89-3.87 (m, 2H), 3.52 (br s, 2H), 3.23-3.20 (m, 2H), 2.73 (s, 2H), 2.19 (br s, 1H), 1.88 (br s, 3H); HRMS (EI) calcd for C₂₉H₃₂ClN₈O₃S 607.2007, found 607.2000.

Example 4

By following the method of Example 3 and substituting 3-(2-phenethylamino)-5-chloro-6-benzyl-1-methylenecarboxypyrazinone for 3-(2-phenethylamino)-5-chloro-6-phenyl-1-methylenecarboxypyrazinone, the title compound was prepared: HRMS (EI) calcd for C₃₀H₃₄ClN₈O₃S 621.2163, found 621.2171.

Example 5

By following the method of Example 3 and substituting 3-(2-phenethylamino)-5-chloro-6-(2-phenylethyl)-1-methylenecarboxypyrazinone for 3-(2-phenethylamino)-5-chloro-6phenyl-1-methylenecarboxypyrazinone, the title compound was prepared: HRMS (EI) calcd for C₃₁H₃₆ClN₈O₃S-635.2320, found 635.2330.

Example 6

By following the method of Example 3 and substituting 3-(2-phenethylamino)-6-phenyl-1-methylenecarboxypyrazinone for 3-(2-phenethylamino)-5-chloro-6-phenyl-1-methylenecarboxypyrazinone, the title compound was prepared: HRMS (EI) calcd for C₂₉H₃₃N₆O₃S 573.2396, found 573.2399.

Example 7

By following the method of Example 3 and substituting 3-(2-phenethylamino)-6-benzyl-1-methylenecarboxypyrazinone for 3-(2-phenethylamino)-5-chloro-6-phenyl-1-methylenecarboxypyrazinone, the title compound was prepared: HRMS (EI) calcd for C₃₀H₃₅N₈O₃S 587.2553, found 587.2564

Example 8

By following the method of Example 3 and substituting 3-(2-phenethylamino)-6-(2-phenylethyl)-1-methylenecarboxypyrazinone for 3-(2-phenethylamino)-5-chloro-6-phenyl-1-methylenecarboxypyrazinone, the title compound was prepared: HRMS (EI) calcd for C₃, H₃₇N₈O₃S 601.2709, found 601.2714.

Example 9

A solution of 2-amino-5-aminomethylpyridine in 1.60 mL tetrahydrofuran (0.13 M) was added to N,N-diisopropylethylamine (0.145 mL, 0.832 mmol). The resulting mixture was allowed to stir for 10 minutes at room temperature. The solution was then added to 3-(2-Phenylethylamino)-6-benzyl-5-chloro-1-methylenecarboxypyrazinone (81.6 mg, 0.2051 mmol), N-hydroxybenzotriazole (38.1 mg, 0.2819 mmol), and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (49.6 mg, 3.511 mmol). The reaction mixture was then allowed to stir over night. The reaction mixture was diluted with ethyl acetate (50 mL). The organic solution was washed with 5% citric acid (1×25 mL), saturated NaHCO₃ (1×25 mL), and brine (1×25 mL). The organic solution was dried (MgSO₄), filtered and concentrated. The crude reaction mixture was purified by MPLC (ethyl acetate) to give pure product: ¹H NMR (300 MHz, DMSO) δ 8.50 (br s, 1H), 7.83 (s, 1H), 7.68 (br s, 1H), 7.34-7.19 (m, 13H), 6.46-6.43 (m, 1H), 5.90 (br s, 1H), 4.42 (s, 2H), 4.09 (br s, 2H), 3.98 (br s, 2H), 3.56 (br s, 3H), 2.94 (br s, 3H); HRMS (EI) calcd for C₂₇H₂₈ClN₆O₂ 503.1962, found 503.1968.

Example 10

3-(2-Phenylethylamino)-5-chloro-6-phenethyl-1-(2-amino-5-methylcarboxamidomethylpyridinyl)pyrazinone

By following the method of Example 9 and substituting 3-(2-phenethylamino)-5-chloro-6-(2-phenylethyl)-1-methylenecarboxypyrazinone for 3-(2-phenethylamino)-5-chloro-6-benzyl-1-methylenecarboxypyrazinone, the title compound was prepared: HRMS (EI) calcd for C₂₈H₃₀N₆O₂ 517.2119, found 517.2127.

Example 11

A solution of 3-(2-phenethylamino)-6-phenyl-1-methylenecarboxypyrazinone (217.6 mg, 0.6228 mmol) in 6.3 mL tetrahydrofuran and dimethylformamide (1:1, 0.1 M) was added N,N-diisopropylethylamine (1.00 mL, 5.741 mmol), N-hydroxybenzotriazole (171.1 mg, 1.266 mmol), and 1-[3-(dimethylamino)propyl 1-3-ethylcarbodiimide hydrochloride (240.0 mg, 1.252 mmol). The resulting mixture was allowed to stir for 30 minutes. The reaction mixture was then added to the 3-(di-Boc-guanidino)propanamine (1.30 mg, 3.684 mmol) in one portion. The resulting mixture was allowed to stir over night. The reaction mixture was diluted with ethyl acetate (50 mL) and washed with 5% citric acid (1×25 mL), saturated NaHCO₃ (1×25 mL), and brine (1×25 mL). The organic solution was dried (MgSO₄), filtered and concentrated. The crude reaction was purified by MPLC (75% ethyl acetate/hexanes) to give the product EX-11A: ¹H NMR (300 MHz, DMSO) δ 11.42 (s, 1H), 8.46 (t, J=6.3 Hz, 1H), 7.92 (t. J=6.0 Hz, 1H), 7.46-7.41 (m, 5H), 7.37-7.23 (m, 5H), 6.86 (s, 1H), 6.24 (br s, 1H), 4.49 (s, 2H), 3.79-3.72 (m, 2H), 3.48-3.42 (m, 2H), 3.31-3.25 (m, 2H), 3.00 (t, J=7.1 Hz, 2H), 1.53 (s, 9H), 1.40 (s, 9H); HRMS (EI) calcd for C₃₄H₄₅N₇O₆ 648.3510, found 648.3498.

A flask of protected guanidino EX-11A (260.7 mg, 0.449 mmol) was added to 5.0 mL of 4 M HCl in dioxane. The resulting solution was allowed to stir for 4 hours. The solution was concentrated and the crude product was triturated from ethyl ether. The resulting white solid was collected by filtration, washed with ethyl ether and dried to give pure product: ¹H NMR (300 MHz, DMSO) δ 9.65 (br s, 1H), 8.48 (t, J=5.1 Hz, 1H), 7.96 (t, J=5.4 Hz, 1H), 7.60-7.22 (m, 13H), 6.66 (s, 1H), 4.32 (s, 2H), 3.82 (br s, 2H), 3.13-3.09 (m, 2H), 3.03-2.98 (m, 2H), 1.59-1.54 (m, 2H); HRMS (EI) calcd for C₂₄H₂₉N₇O₂ 448.2461, found 448.2425.

Example 12

By following the method of Example 11 and using the appropriate butanamine, the title compound was prepared: HRMS (EI) calcd for C₂,₅H₃ N₇O₂ 20 462.2617, found 462.2575.

Example 13

By following the method of Example 11 and using the appropriate pentanamine, the title compound was prepared: HRMS (EI) calcd for C₂₆H₃₃N₇O₂ 476.2774, found 476.278.

Example 14

By following the method of Example 11 and using the appropriate butanamine with 3-(2-phenethylamino)-6-(4-methoxyphenyl)-1-methylenecarboxypyrazinone, title compound was prepared: HRMS (EI) calcd for C₂₆H₃₄N₇O₃ 492.2723, found 492.2693.

Example 15

By following the method of Example 11 and using the appropriate butanamine with 3-(2-phenethylamino)-6-(4-biphenyl)-1-methylenecarboxypyrazinone, the title compound was prepared: HRMS (EI) calcd for C₃₁H₃₆N₇O₂ 538.2930, found 538.2918.

Example 16

By following the method of Example 11 and using the appropriate butanamine with 3-(2-phenethylamino)-6-(3,4methylenedioxyphenyl)-1-methylenecarboxypyrazinone, the title compound was prepared: HRMS (EI) calcd for C₂₆H₃₂N₇O₄ 506.2516, found 506.2506.

Example 17

Using the procedures of Schemes 1 and 2 and Example 1, 2-{5-chloro-6-(3-bromophenyl)-3-[(methylethyl)amino]-2-oxohydropyrazinyl}acetic acid was prepared.

A solution of 2-{5-chloro-6-(3-bromophenyl)-3-[(methylethyl)amino]-2-oxohydropyrazinyl}acetic acid (7.4 g, 18.47 mmol) and copper (I) cyanide (1.75 g 19.55 mmol) in 75.0 mL dimethylsulfoxide was heated at 150° C. for 20 hours. The flask was then cooled and the contents were poured into a solution of 500 mL water and 100 mL 1M HCl. The mixture was then extracted with ethyl acetate (2×1 L). The ethyl acetate layers were separated, combined, dried over magnesium sulfate, filtered, and stripped of solvent under reduced pressure. Purification by HPLC (25% ethyl acetate in hexanes) provided 2-{5-chloro-6-(3-cyanophenyl)-3-[(methylethyl)amino]-2-oxohydropyrazinyl}acetic acid (EX-17A) of adequate purity: ¹H NMR (400 MHz, CDCl₃) d 7.8-7.4 (br, 4H), 4.4 (br, 2H). 2.2 (br, 1H), 1.3 (br d, 6H); MS (ES) calcd for C₁₅H₁₅ClN₄O₃ 346, found 347 (M+H).

2-{5-chloro-6-(3-cyanophenyl)-3-[(methylethyl)amino]-2-oxohydropyrazinyl}acetic acid (EX-17A) was converted to the product as described in Example 1. Mass spectral analysis gave an m/z+1 of 478.

Example 18

A solution of 3.90 g (10 mmol) of EX-1B in 50 mL of CH₃NO₂ was treated with 4.5 mL of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU). After 30 minutes, the reaction was poured into 300 mL of ethyl acetate and washed with 2×25 mL 1 N HCl (aq). The excess organic solvent was removed under reduced pressure. The resulting oil was treated with 25 mL H₂O and 25 mL CH₃OH. The solution was treated with 2.8 g of KOH. After 60 minutes, the reaction was diluted with 300 mL of acetonitrile. The resulting solid was washed with 100 mL of acetonitrile. The solid was dissolved in 50 mL 1N HCl (aq) and extracted with 2×100 mL CH₂Cl₂. The organic layer was dried with MgSO₄, and the excess solvent removed under reduced pressure. The resulting solid was washed with diethyl ether and dried in ambient conditions to give 2.1 g (6.4 mmol; 64% yield) of desired product (EX-18A). LC/MS showed a single peak at 254 nm and a M+Na at 346. ¹H-NMR (dmso-d₆): 4.4 ppm (2H, s); 5.6 ppm (2H, s); 7.3-7.5 ppm (5H, m)

The product was obtained using standard coupling conditions and deprotection methods under reducing conditions of Example 1 to give the desired product after purification by HPLC. LC/MS showed a single peak at 254 nm and a M+H at 425. ¹H-NMR (dmso-d₆): 4.2 ppm (2H, s); 4.4 ppm (2H, m); 4.6 ppm (2H, m); 7.4 ppm (5H, m) 7.6-7.8 ppm (4H, m); 8.4 ppm (2H, bs); 8.7 (1H, m); 9.1 ppm (2H, bs); 9.3 ppm (2H, bs).

Using the procedures of Scheme 1, Scheme 2, and Example 1 through Example 18 with suitable reagents, starting materials, intermediates, and additional pyrazinones of the present invention were prepared by one skilled in the art using similar methods and these pryazinones summarized in Table 1.

TABLE 1
Additional Substituted Pyrazinones Prepared by Procedures of
Scheme 1, Scheme 2, and Examples 1 through 18
General Structure
Ex.				MW
No.	R21	B—A	YO	(m/z + 1)
19	phenyl	2-(4-pyridyl)ethyl	4-amidinobenzyl	516.3
20	benzyl	2-phenylethyl	4-amidinobenzyl	528.9
21	bi-	2-(3-pyridyl)ethyl	4-amidinobenzyl	591.9
	phenyl
22	bi-	2-(4-chlorophenyl)ethyl	4-amidinobenzyl	625.5
	phenyl
23	3-	benzyl	4-amidinobenzyl	535.3
	chloro-
	phenyl
24	bi-	2-phenylethyl	4-amidinobenzyl	591.5
	phenyl

Example 25

To a solution of 2-iodo-5-methyl benzoic acid (10.0 g, 0.038 mol) in toluene (200 mL) was added trimethylorthoacetate (25 mL) at room temperature. The reaction mixture was refluxed for 12 hours. The reaction mixture was cooled to room temperature and diluted with saturated sodium bicarbonate and ethyl acetate. The layers were separated and the organic layer washed with brine. The organic layer was dried (MgSO₄) and solvent removed to give 1035 g of methyl 2-iodo-5-methylbenzoate (EX-25A) as a yellow oil with an m/z+1=277.

A degasssed mixture of ester EX-25A (10.35 g, 0.037 mol)), Pd(dba)₃ (0.017 g, 0.018 mmol)), dppf (0.025 g, 0.045 mmol)) and Zn(CN)₂ (2.6 g, 0.02 mol) in DMF (100 mL) was heated to 120° C. for 2 hours. The reaction mixture was poured into water and ethyl acetate. The organic layer was washed with water (2×) and brine (1×). The organic layer was collected, dried (MgSO₄) and the solvent removed in vacuo to give 5.28 g methyl 2-cyano-5methylbenzoate (EX-25B) as a brownish oil with m/z+1=176

To a solution of EX-25B (5.28 g, 0.03 mol) in CCl₄ (100 mL) was added NBS (5.37 g, 0.03 mol) and benzoyl peroxide (0.36 g, 0.0015 mol) at room temperature. The reaction mixture was heated to reflux for 15 hours. The reaction was cooled and the precipitate filtered away. The organic filtrate was diluted with ether and washed with saturated sodium bicarbonate. The organic layer was dried (MgSO₄) and the solvent removed in vacuo to give an oil, which after chromatography (silica, hexanes to 30% ether/hexanes) gave 1.57 g methyl 2-cyano-5-bromomethylbenzoate (EX-25C) as a tan solid with m/z+1×255.

To a solution of di-tert-butyl iminodicarboxylate (1.48 g, 7.5 mmol) in THF at 0° C. was added NaH (0.31 g. 7.8 mmol). After stirring at room temperature for 30 minutes, EX-25C (1.57 g, 6.0 mmol) was added as a solution in THF via canula. The reaction was complete after 2.5 hours at room temperature. The reaction was quenched by addition of water and ether. The layers were separated and the organic layer washed with brine (2×), dried (MgSO₄) and the solvent removed in vacuo to give 2.36 g methyl 2-cyano-5-(N,N-bis-Bocaminomethylbenzoate (EX-25D) as a yellowish solid with m/z+1=391.

To a solution of EX-25D (0.20 g, 0.5 mmol) in anhydrous methanol (10 mL) was added anhydrous hydrazine (1 mL, 32 mmol)) at room temperature. The reaction was heated to 70° C. overnight. The solvent was removed in vacuo to give a solid, which was suspended in ether and filtered to give 0.11 g of the product EX-25E as a white solid with an m/z+1=291.

To a solution of EX-25E (0.22 g, 0.78 mmol) in dichloromethane (5 mL) at room temperature was added trifluoroacetic acid (5 mL). After 30 min, the solvent was removed in vacuo to give a clear residue, which upon drying on high vacuum became a white solid EX-25F (0.39 g) with m/z+1=191.

To a solution of 2-{5-chloro-6-(3-aminophenyl)-3-cyclobutylarnino-2-oxohydropyrazinyl}acetic acid (0.93 g, 2.6 mmol) in DMF (20mL) was added EDC (0.64 g, 3.3 mmol) and HOBt (0.44 g, 3.2 mmol) at room temperature. After 30 min, the amine EX-25F in a solution of DMF and trimethylamine (1.76 mL, 0.01 mol) was added to the acid. The reaction mixture was stirred for 1 hour and then poured into NaHCO₃ (aq) and ethyl acetate. The layers were separated and the aqueous layer extracted with ethyl acetate (2×) The organic layer was washed with brine (1×), dried (MgSO₄), and the solvent removed in vacuo to give a brown oil, which after chromatography (silica, dichloromethane to 10% methanol/dichloromethane) gave the product EX-25G (0.29 g) with m/z+1+521.

To a suspension of EX-25G (0.29 g, 5.6 mmol) in ether (5 mL) was added 25 mL of 2.0 M HCl in ether. The reaction was stirred for 30 min to give a fine precipitate which was filtered and dried to give the product (0.37 g) with m/z+1=521. Analysis C₂₅H₂₅Cl₂N₈O₃+1.8HCl+2.15H₂O gave C, 47.78%; H, 5.22%; N, 16.29%; O 12.59%; Cl, 15.43%.

Example 26

To a solution of 2-Amino-methylpyrimidine (1.0 g, 9.0 mmol) in THF (100 mL) at 0° C. was added TMEDA (4.15 mL, 27.0 mmol) and n-butyl lithium (17.2 mL, 27.0 mmol). After stirring at 0° C. for 30 min, (2-bromoethoxy)-tert-butyldimethylsilane (2.16 mL. 10 mmol) was added in a solution of THF (20 mL) dropwise via canula. The reaction was allowed to warm to room temperature overnight. The reaction was diluted with water and ether. The aqueous layer was extracted (2×) with ether. The organic layer was washed with brine, dried (MgSO₄), and solvent removed in vacuo to give a brown oil, which after chromatography (silica, dichloromethane to 10% methanol/dicholoromethane) gave EX-26A (1.26 g) with m/z+1=268.

To a solution of EX-26A (4.36 g, 16.0 mmol) in dichloromethane (100 mL) was added triethylamine (3.4 mL, 24 mmol), di-tert-butyl dicarbonate (4.53 g, 24 mmol) and DMAP (0.2 g, 0.16 mmol). After stirring at room temperature for 24 hours the reaction was poured into aqueous sodium bicarbonate and ether. The layers were separated and the aqueous layer extracted (2×) with ether. The organic layer was washed with brine, and the solvent removed in vacuo to give a red oil (4.4 g). The oil was purified by chromatography (silica, 60% ethyl acetate/hexanes) to give a yellow oil EX-26B (2.77 g) with m/z+1=468.

To a solution of EX-26B (2.77 g, 6.0 mmol) in THF (100 mL) was added TBAF (7.1 mL, 1 M in THF) dropwise. After 4 hours at room temperature the reaction was complete. The reaction mixture was poured into ethyl acetate and brine. The aqueous layer was extracted 2× with ethyl acetate. The organic layer was dried (MgSO₄) and the solvent removed to give a yellow oil, which after chromatography (silica, 70% ethyl acetate/hexanes to 100% ethyl acetate) gave 1.51 g of the alcohol 2-(bis-Boc-amino)-4-(3-hydroxypropyl)pyrimidine (EX-26C) as a yellow oil with an m/z+1=354.

To a solution of EX-26C (1.38 g, 4.0 mmol) in toluene (20 mL) was added triethylamine (0.54 mL, 4.0 mmol) and methanesulfonyl chloride (0.30 mL, 4.0 mmol). After 10 min, no starting material was observed by TLC. The reaction mixture was poured into dichloromethane and water. The layers were separated and the organic layer was washed with brine and dried (Na₂SO₄). The solvent was removed to give a yellow oil EX-26D which was used without further purification. To the crude mesylate EX-26D (1.73 g, 4.0 mmol) in DMF (10 mL) was added NaN₃ (2.6 g, 40 mmol) and water (1 mL). The reaction mixture was stirred at room temperature for 18 hours. The reaction was diluted with ether and water. The layers were separated and the organic layer washed with brine and dried (Na₂SO₄). The solvent was removed to give an oil, which after chromatography (silica, 60% ethyl acetate/hexanes) gave the azide EX-26E (0.91 g) with a m/z+1=379.

To a solution of 2-(bis-Boc-amino)-4-(3-azidopropyl)pyrimidine (EX-26E) (0.39 g, 1.0 mmol) in ethanol at room temperature was added 10% Pd/C and a hydrogen balloon. After stirring at room temperature for 3 hours the reaction was complete by TLC. The reaction mixture was filtered through a pad of celite and washed with ethanol. The solvent was removed in vacuo to give an oil (035 g) which was a mixture of Boc derivatives EX-26F. To a solution of EX-26F (0.32 g) in dichloromethane (7 mL) was added trifluoroacetic acid (3 mL) dropwise. After 30 min, the solvent was removed in vacuo to give 0.34 g of the free amine 2-amino-4-(3-aminopropyl)pyrimidine (EX-26G) as an oil with an m/z+1=353.

To a solution of anilino-acid 2-{-chloro-6-(3-aminophenyl)-3-cyclobutylamino-2-oxohydropyrazinyl}acetic acid (1.46 g, 4.2 mmol) in DMF (30 mL) was added HOBt (0.91 g, 6.7 mmol) and EDAC (1.29 g, 6.7 mmol) at room temperature. After stirring for 30 min, EX-26G (1.59 g, 4.2 mmol) in DMF (8 mL) and triethylamine (3.5 mL, 25.2 mmol) was added. After 30 min, the reaction was diluted with aqueous sodium bicarbonate and ethyl acetate. The layers were separated and aqueous layer extracted (2×) with ethyl acetate. The organic layer was washed with brine and dried (MgSO₄). The solvent was removed in vacuo to give an oil, which after chromatography (dichloromethane to 15% methanol dichloromethane) gave the product EX-26H (1.20 g) as a yellow foam with an m/z+1=483.

To a solution of EX-26H (0.32 g, 0.67 mmol) in 5 mL of ether was added 20 mL of 3.0 M HCl in ether at room temperature. The reaction mixture was stirred at room temperature for 20 minutes to give a precipitate which was filtered to give a yellow solid (0.34 g) of the di-hydrochloride salt. The solid was purified by RP-HPLC to give (0.22 g) with an m/z+1=483.

Example 27

To a solution of the mixture N-Boc and N,N-bis-Boc 4(N′-Z-amidino)benzylamines (3.0 g, 6.2 mmol) in 50 mL of EtOH and 20 mL THF was added 300 mg of 5% Pd(C). The solution was hydrogenated at 40 psi H₂ in a Parr shaker for 18 hrs. The catalyst was filtered off, and the filtrate concentrated in-vacuo to afford the mixture EX-27A (2.1 g, 6.0 mmol) of N-Boc and N,N-bis-Boc 4-amidinobenzylamines as a brownish oil with M+H of 250 (monoBoc) and M+H of 350 (diBoc).

A solution of EX-27A (2.1 g, 6.0 mmol) in MeOH was treated with ethylenediamine (1.13 g, 18.9 mmol). The mixture was heated to reflux for 18 hrs, cooled to room temperature and concentrated in vacuo. 50 mL of H₂O was added and extracted 3× with CH₂Cl₂. The organic extracts were dried over MgSO₄, filtered and condensed in vacuo to afford the mixture EX-27B (2.2 g, 5.9 mmol) as a tan solid with M+H of 276 (monoBoc) and M+H of 376 (diBoc).

A solution of the mixture EX-27B (2.2 g, 5.9 mmol) in 20 mL methylene chloride and 5 mL pyridine was treated with benzyl chloroformate (1.3 g, 7.7 mmol). The mixture was stirred for 1.5 hrs and then was added 100 mL methylene chloride and 100 mL 0.5 N HCl. The layers were seperated, and the aqueous extracted 2× with methylene chloride The organics were combined, washed 1× with brine, dried over MoSO₄, filtered and condensed in vacuo. Purification by column chromatography (silica gel 200-400 mesh) using 50% ethyl acetate as elutant afforded the mixture EX-27C (1.1 g , 2.2 mmol) as a tan oil with M+H 410 (monoBoc) and M+H 510 (diBoc).

A solution of the mixture EX-27C (800 mg, 1.6 mmol) in 10 mL of methylene chloride was treated with 5 mL of 4N HCl in dioxane. The mixture was stirred for 1.5 hrs. and then diethyl ether was added to precipitate the product. The precipitate was filtered off and washed extensively with diethyl ether to afford the HCl salt EX-27D (520 mg, 1.7 mmol) as a tan solid with an M+H of 310.

A solution of 2-{5-chloro-6-(3-nitrophenyl)-3-cyclobutylamino-2-oxohydropyrazinyl}acetic acid (329 mg, 0.86 mmol) in 10 mL of methylene chloride was treated with HOBt (127 mg, 0.94 mmol) for 20 min. Then was added EDC (180 mg, 0.94 mmol), DIEA (335 mg, 2.6 mmol), and EX-27D (300 mg, 0.86 mmol), and the reaction was allowed to stir for 1 hr. Water was then added, and the reaction mixture extracted 3× with methylene chloride. The organics were then washed 1× with brine, dried over MgSO₄, filtered and condensed in vacuo.

Purification by column chromatography (silica gel 200-400 mesh) eluting with 90% ethyl acetate/hexane and then 100% ethyl acetate afforded EX-27E (325 mg, 0.48 mmol) as a yellow solid which gave an M+H of 670.

A solution of EX-27E (325 mg, 0.48 mmol) in 10 mL of MeOH was treated with 0.7 mL of 3N HCl in MeOH and 5% Pd(C) (50 mg). The mixture was hydrogenated at 45 psi on a Parr shaker apparatus for 2 hrs. The catalyst was then filtered off and washed extensively with MeOH. The filtrate was concentrated in vacuo. The residue was dissolved in EtOH and triturated with diethyl ether. The solid formed was filtered and extensively washed with diethyl ether to afford the HCl salt product (220 mg, 0.43 mmol) as an off-white solid which gave M+H's of 506 (100%) and 508 (60%).

Example 28

Using the procedures of Scheme 1, Scheme 2, and Example 1 through Example 18 with suitable reagents, starting materials, 2-{5-chloro-6-(3-nitrophenyl)-3-cyclobutylamino-2-oxohydropyrazinyl}acetic acid and 4(N-Boc-aminomethyl)benzylamine prepared according to the literature reference (Callahan, J. F., Ashton-Shue, D., et al., J. Med. Chem. 1989, 32, 391-396), the product was obtained and gave an m/z(M+H)⁺ of 467.

Example 29

Using the procedures of Scheme 1, Scheme 2, and Example 1 through Example 18 with suitable reagents, starting materials, 2-{5-chloro-6-(3-nitrophenyl )-3-cyclobutylamino-2-oxohydropyrazinyl}acetic acid, and 2-(4-imidazoyl)ethanamine commercially available form Fluka, the product was obtained and cave an m/z(M+H)⁺ of 442.

Example 30

Using the procedures of Scheme 1, Scheme 2, and Example 1 through Example 18 with suitable reagents, starting materials, 2-{5-chloro-6-(3-5-nitrophenyl)-3-cyclobutylamino-2-oxohydropyrazinyl}acetic acid and 2-(4-(2-aminoimidazoyl))ethanamine prepared according to the literature reference (Nagai, W. Kirk, K. L., Cohen, L. A., J. Org. Chem. 1973, 33, 1971-1974), the product was: obtained and gave an m/z(M+H)⁺ of 457.

Example 31

2-Amino-4-picoline (5.00 g, 46.2 mmol) and 11.20 g of di-tert-butyl dicarbonate (50.8 mmol) were stirred in 100 mL of tert-butanol at 30° C. overnight. The reaction mixture was concentrated in vacuo and chromatographed on silica gel with 25% EtOAc/Hexane to give 8.20 g (85% yield) of the product EX-31A.

To a solution of 3.00 g of N-Boc-2-amino-4-picoline (EX-31A, 14.4 mmol) in 150 mL of THF at −78° C. was added 14.4 mL of 2.5 M n-BuLi/Hexanes solution. The reaction mixture was allowed to warm up to room temperature and stirred for 40 min. The reaction mixture was cooled down to −78 ° C. and 1-bromo-2-chloroethane was added. The mixture was stirred at −78° C. for overnight. The reaction mixture was quenched with HOAc at −78° C. and concentrated in vacuo.

The crude was dissolved in EtOAc and washed with brine. The EtOAc layer was dried over MgSO₄ and concentrated in vacuo. The crude product was purified by silica gel chromatography with 20% EtOAc/Hexane to give 2.00 g (50%) of the product EX-31B.

To a solution of 2.00 g of the chloride EX-31B (6.91 mmol) and 0.50 g of sodium azide (7.69 mmol) in 80 mL of DMF was added 10 mL of water and 0.52 g of sodium iodide. The reaction mixture was stirred at 55° C. overnight. The mixture was washed with brine and extracted with EtOAc. The EtOAc layer was dried over MgSO₄ and concentrated in vacuo. The crude product was chromatographed on silica gel with 20% EtOAc/Hexane to give 1.80 g (94%) of the product EX-31C.

To a solution of 1.74 g of the azide EX-31C (6.27 mmol) in 30 mL of THF was added 1.64 g of triphenylphosphine (6.27 mmol) and 1 mL of water. The reaction mixture was stirred at room temperature overnight. The reaction mixture was concentrated in vacuo and chromatographed on silica gel with 10% CH₃OH/CH₂Cl₂ to give 1.26 g (80%) of the amine product EX-31D.

To a solution of 0.77 g of 2-{5-chloro-6-(3-aminophenyl)-3-cyclobutylamino-2-oxohydropyrazinyl}acetic acid (2.21 mmol) in 50 mL of DMF was added 0.47 g of EDC.HCl and 033 g of HOBt. The mixture was stirred at room temperature for 30 min. After the addition of 0.61 g of the amine EX-31D (2.43 mmol) and 0.50 g of triethylamine the reaction mixture was stirred at room temperature overnight. The mixture was washed with water and extracted with EtOAc. The EtOAc layer was washed-with brine and concentrated in vacuo. The crude product was chromatographed on silica gel with 3% CH₃OH/CH₂Cl₂ to afford 1.10 g (86%) of the Boc protected product EX-31E.

The Boc protected product EX-31E (0.50 g) was treated with 2.0 M of HCl/ether solution for overnight. The mixture was concentrated in vacuo and chromatographed by DeltaPrep with 10% CH₃CN/H₂O to give 0.32 g of the product (78%) as a TFA salt. The TFA salt was converted to the HCl salt by ion exchange chromatography with BioRad AG 2-X8 resin and 10% CH₃CN/H₂O and analyzed by mass sprectrometry to give an (M+H) of 482.16.

Example 3

A mixture of 26.5 mmol of bromo-3-fluorotoluene, 29 mmol of copper cyanide and 25 ml of dry DMF is refluxed for 12 hr, then 150 ml water was added and the reaction mixture-filtered. The precipitate was triturated with 100 ml of concentrated ammonium hydroxide, extracted twice with 50 ml of dichloromethane. The organic layer was washed with ammonium hydroxide (100 ml) and water (100) and then concentrated and recrystallized (hexane) to yield 2 g solid 4cyano-3-fluorotoluene (EX-32A). NMR and MS confirmed the structure of EX-32A.

A mixture of 2-fluorotmethylbenzonitrile (EX-32A) (2 g, 14.8 mmol), NBS (2.6 g, 14.8 mmol) and benzoyl peroxide (178 mg, 0.74 mmol) in CCl₄ (30 ml) was refluxed for 16 hr, then cooled and filtered. The mixture was then concentrated and purified with silica-gel column to yield 1.5 g oil EX-32B. NMR and MS confirmed the structure of EX-32B.

N,N-(Boc)₂NH (1.1 g, 5.17 mmol) in THF (20 ml) was cooled to 0° C. and NaH (60%, 0.25 g, 6.11 mmol) was added. The mixture was kept stirring for 30 min. then benzylbromide EX-32B (1 g, 4.7 mmol) in THF (2 ml) was added. The mixture was stirred for 3 hr. Then water was added and extracted with EtOAc (3×5 ml). The combined EtOAc was then concentrated and recrystalized in hexane to yield 0.6 g white solid EX-32C. NMR and MS all confirmed the structure of EX-32C.

To the compound EX-32C (200 mg) in CH₂Cl₂ (3 ml) was added TFA (1.5 ml). The reaction mixture was stirred at RT for 3 h and concentrated to afford oil EX-32D which was directly used for next amide coupling reaction.

To 2-{5-chloro-6-(3-nitrophenyl)-3-cyclobutylamino-2-oxohydropyrazinyl}acetic acid (²²⁷ mg, 0.6 mmol) was added HOBt (106.1 mg, 0.7 mmol) and EDC (126.7 mg, 0.7 mmol) in DMF (3 ml). The mixture was stirred at RT for 30 min. Then the amine TFA salt EX-32D in DMF (1 ml) and triethyl amine (0.2 ml) was added to the mixture which was stirred overnight. The mixture was concentrated, purified to yield 200 mg solid EX-32E, confirmed by NMR and MS.

EX-32E (0.2 g) in THF (5 ml) was added with Pd/C (10%, 20 mg). The mixture was stirred at RT under N₂. and then H₂ gas balloon was connected to the flask. The reaction was stirred for 24 hr to complete reaction. The mixture was filtered, washed with ethanol, and then dried to yield 0.16 g white solid EX-32F, which was directly used for next cyclization reaction.

To acetohydroxamic acid (37 mg, 0.5 mmol) in DMF (2 ml) was added potassium t-butoxide (1M, 0.5 ml, 0.5 mmol) at room temperature. After stirring for 30 min, benzonitrile EX-32F (160 mg, 0.33 mmol) in DMF (2 ml) was added. The reaction mixture was stirred overnight, and then poured into a mixture of brine and ethyl acetate. The aqueous layer was extracted with EtOAc (3×2 ml), and the combined EtOAc was washed with brine, dried, concentrated and purified on reverse-phase HPLC to yield 60 mg of the HCl salt. NMR and MS both confirmed the structure of product.

Example 33

By substituting 2-fluoro-4-methylbenzornitrile for 4-methylbenzonitrile, 2-fluoro-4-methylbenzonitrile (EX-32A) was converted to the protected amidine, 4-(N-benzyloxycarbonylamidino)-3-fluorobenzylamine hydrogen chloride salt (EX-33A), using the procedure outlined in Synthetic Communications, 28(23), 4419-4429 (1998) for preparing 4-(N-benzyloxycarbonylamidino)benzylamine hydrogen chloride salt. EX-33A was characterized by: MS (LR-ESI) m/z 302 (M+H)+; ¹HNMR (DMSO, 300 MHz) δ 8.75 (bs, 3H, CH₂NH₃), δ 7.79-7.02 (m, 8H, aromatic CH), δ 5.31-5.07 (m, 2H, C₈H₅CH₂), δ 4.10 (s, 2H, CH₂NH₃).

Using the procedure of Example 44 by substituting 2-[3-(N-{2-phenylethyl}amino)-2-oxo-6-phenylhydropyrazinyl]acetic acid (EX-1D) for 2-[3-({2-[(tert-butoxy)carbonylamino]ethyl}amino)-5-chloro-2-oxo-6-phenylhydropyrazinyl]acetic acid, EX-33A was converted to the product which gave an m/z+1 of 499.

Example 34

By substituting 3-fluoro-4-methylbenzornitrile for 4-methylbenzonitrile, 3-fluoro-4-methylbenzornitrile was converted to the protected amidine, 4(N-benzyloxycarbonylamidino)-2-fluorobenzylamine hydrogen chloride salt (EX-34A), using the procedure outlined in Synthetic Communications, 28(23), 4419-4429 (1998) for preparing 4-(N-benzyloxycarbonylamidino)benzylamine hydrogen chloride salt. EX-34A was characterized by: MS (LR-ESI) m/z 302 (M+H)⁺; ¹HNMR (DMSO, 300 MHz) δ 8.82 (bs, 3H, CH₂NH₃), δ 7.92-7.26 (m, 8H, aromatic CH), δ 5.32 (s, 2H, C₆H₅CH₂), δ 4.10 (s. 2H, CH₂NH₃).

Using the procedure of Example 44 by substituting 2-[3-(N-{2-phenylethyl}amino)-2-oxo-6-phenylhydropyrazinyl]acetic acid (EX-1D) for 2-[3-({2-[(tert-butoxy)carbonylamino]ethyl}amino)-5-chloro-2-oxo-6-phenylhydropyrazinyl]acetic acid, EX-34A was converted to the product which gave an m/z+1 of 499.

Example 35

By substituting 2-methoxy-4-methylbenzonitrile for 4-methylbenzonitrile, 2-methoxy-4-methylbenzonitrile was converted to the protected amidine, 4-(N-benzyloxycarbonylamidino)-3-methoxybenzylamine hydrogen chloride salt (EX-35A), using the procedure outlined in Synthetic Communications, 28(23), 4419-4429 (1998) for preparing 4-(N-benzyloxycarbonylamidino)benzylamine hydrogen chloride salt. EX-35A was characterized by: MS (LR-ESI) m/z 314 (M+H)⁻; ¹HNMR (DMSO, 300 MHz) δ 7.77-6.95 (m, 8H, aromatic CH), δ 4.74 (bs, 2H, C₆H₅CH₂), δ 4.10-3.95 (m, 2H, CH₂NH₃), δ 3.80 (s, 3H, OCH₃).

Using the procedure of Example 44 by substituting 2-[3-(N-{2-phenylethyl}amino)-2-oxo-6-phenylhydropyrazinyl]acetic acid (EX-1D) for 2-[3-({2-[(tert-butoxy)carbonylamino]ethyl}amino)-5-chloro-2-oxo-6-phenylhydropyrazinyl]acetic acid, EX-35A was converted to the product which gave an m/z+1 of 511.

Using the procedures of Scheme 1, Scheme 2, and the Examples herein with suitable reagents, starting materials, and intermediates, additional pyrazinones of the present invention were prepared and these pryazinones are summarized in Table 2.

TABLE 2
Additional Substituted Pyrazinones of the Present Invention Prepared
based on the Procedures of Scheme 1, Scheme 2, and Examples herein.
General Structure
Ex.					MW
No.	R2	R1	B—A—	YO	(m/z + 1)
36	Phenyl	H	2-phenethyl	1-(4-guanidino)-2-	458
				butynyl
37	Phenyl	H	2-phenylethyl	1-(4-guanidino)-cis-	460
				2-butenyl
38	Phenyl	H	2-phenylethyl	(3-aminoindazol-5-	494
				yl)methyl
39	Phenyl	H	2-phenylethyl	(3-aminoindazol-6-	494
				yl)methyl
40	3-amino-	Cl	cyclobutyl	(4-amidino-3-	498
	phenyl			fluoro)-
				benzyl
41	3-amino-	Cl	cyclobutyl	(4-amidino-2-	511
	phenyl			fluoro)-
				benzyl
42	3-amino-	Cl	isopropyl	(4-amidino-3-	486
	phenyl			fluoro)-
				benzyl
43	3-amino-	H	isopropyl	(4-amidino-3-	452
	phenyl			fluoro)-
				benzyl

To a solution of 2-[3-({2-[(tert-butoxy)carbonylamino]ethyl}amino)-5-chloro-2-oxo-6phenylhydropyrazinyl]acetic acid (6.50 g, 15.38 mmol) prepared as described in EX-1C using 2-(tert-butoxycarbonylamino)ethylamine in place of 2-phenylethylamine in 100.0 mL dimethylformamide was added N,N-diisopropylethylamine (21.0 mL, 120.56. mmol), N-hydroxybenzotriazole (2.73 g, 20.21 mmol), and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (3.84 g, 20.04 mmol). The resulting mixture was stirred for 30 minutes. To the reaction mixture was added in one portion (5.9723 g, 18.68 mmol) of the protected amidine, 4(N-benzyloxycarbonylamidino)benzyl amine hydrogen chloride salt, prepared using the procedure outlined Synthetic Communications, 28(23), 4419-4429 (1998). The resulting mixture was stirred overnight. The reaction mixture was diluted with ethyl acetate (250 mL) and washed with 5% citric acid (1×50 mL), saturated NaHCO₃ (1×50 mL), and brine (1×50 mL). The organic solution was dried (MgSO₄), filtered and concentrated. The crude reaction was purified by MPLC (80% ethyl acetate/hexanes) to give pure product EX-44A: ¹H NMR (300 MHz, DMSO) δ 8.59-8.53 (1H), 7.99-7.96 (m, 2H), 7.81-7.75 (m, 1H), 7.51-7.25 (m, 12H), 6.99 (br m, 1H), 5.14 (s, 2H), 4.32-4.27 (m, 4H), 3.42-3.35 (m, 4H), 3.24-3.20 (m, 2H), 1.41 (s, 9H); ¹³C NMR (75 MHz, CDCl₃) δ 166.6, 163.0, 156.5, 151.31, 149.9, 143.9, 137.8, 133.5, 132.6, 131.3, 130.1, 129.5, 129.2, 129.1, 128.9, 128.7, 128.4, 127.7, 124.0, 78.5, 66.8, 49.3, 42.6, 36.5, 31.5, 29.0; HRMS (EI) calcd for C₃₅H₃₈ClN₇O₆ 688.2650, found 688.2614.

A solution of pyrazinone EX-44A (334.4 mg, 0.4593 mmol) in 5.0 mL ethanol/4 M HCl in dioxane (3:1, 0.1 M) was flushed with hydrogen gas. To the solution was then added 113.1 mg 10% Pd/C (wet), and the resulting suspension was stirred at room temperature under an atmosphere of hydrogen (balloon pressure) for approximately 18 hours. The reaction mixture was filtered through a pad of Celite 545 and rinsed with ethanol. The solvent was removed under reduced pressure. The resulting oil was triturated with ethyl ether to provide pure product as a white solid: ¹H NMR (400 MHz, DMSO) d 9.50 (s, 2H), 9.29 (s, 2H), 8.8/0 (s, 1H), 8.22 (s, 3H), 7.85-7.80 (m, 3H), 7.44 (br s. 3H), 7.27-7.24 (m, 4H), 4.23 (s, 4H), 3.58-3.54 (m, 4H); HRMS (ES) calcd for C₂₂H₂₅ClN₇O₂ 454.1758, found 454.1741.

Example 45

By following the method of Example 44 and substituting 2-[3-({3-[(tert-butoxy)carbonylamino]propyl}amino)-5-chloro-2-oxo-6-phenylhydropyrazinyl] acetic acid for 2-[3-({2-[(tert-butoxy)carbonylamino]ethyl}amino)-5-chloro-2-oxo-6-phenylhydropyrazinyl]acetic acid, the product was prepared: ¹H NMR (400 MHz. DMSO) d 9.51 (br s, 2H), 8.28 (br s, 2H), 8.77 (s, 1H), 8.15 (3,3H), 7.86-7.79 (m, 3H), 7.42 (s, 3H), 7.26-7.24 (m, 4H), 5.37 (br s, 2H), 4.21 (s 4H), 3.39-3.29 (m, 2H), 2.81-2.76 (br s, 2H), 1.86 (br s, 2H); ¹³C NMR (100 MHz, DMSO) d 166.7, 166.0, 151.2, 149.7, 146.0, 132.5, 131.1, 129.5, 128.8, 127.9, 126.8, 125.1, 123.9, 65.6, 56.6, 49.2, 42.4, 38.1, 37.3, 34.6, 26.7, 19.2, 15.8; HRMS (EI) calcd for C₂₃H₂₆ClN₃O₆ 469.1755, found 469.1725.

Example 46

By following the method of Example 44 and substituting 2-[3-({4[-(tert-butoxy)carbonylamino]butyl}amino)-5-chloro-2-oxo-6-phenylhydropyrazinyl]acetic acid for 2-[3-({2-1-(tert-butoxy)carbonylamino]ethyl}amino)-5-chloro-2-oxo-6-phenylhydropyrazinyl]acetic acid, the product was prepared: ¹H NMR (400 MHz, DMSO) d 9.49 (br s, 2H), 9.28 (s, 2H), 8.75 (s, 1H), 8.08 (s, 3H), 7.89-7.76 (m, 3H), 7.42 (s,3H), 7.26-7.24 (m, 4H), 4.70 (br s, 4H), 4.23-4.21 (m, 3H), 2.73 (br s, 2H), 1.57 (br s, 3H), 1.03-0.96 (m, 2H); HRMS (EI) calcd for C₂₄H₂₉ClN₇O₂ 482.2071, found 482.2040.

Example 47

A solution of 1-(N-{4-N-benzyloxycarbonylamidino]benzylamido}carbonylmethyl)-3-({3-[(tert-butoxy)carbonylamino]propyl}amino)-5-chloro-6-phenylpyrazinone hydrochloride (2.0075 g, 2.859 mmol), prepared as an intermediate in Example 45, in 28.0 mL ethanol/4 M HCl in dioxane (1: 1, 0.1 M) was allowed to stir at room temperature for approximately 4 hours. The solvent was removed under reduced pressure. Purification by trituration with ethyl ether cave pure product EX-47A as a yellow solid: ¹H NMR (400 MHz, DMSO) d 11.67 (br s, 1H), 10.53 (br s, 1H), 8.90-8.87 (m, 1H), 8.30-8.25 (m, 3H), 7.89-7.83 (m, 1H), 7.75-7.73 (m, 2H), 7.46-7.23 (m, 13H), 5.532 (s, 2H), 4.26-4.23 (m, 3H), 3.50 (s, 2H), 3.36-3.35 (m, 2H), 2.75 (br m, 2H); HRMS (EI) calcd for C₃₁ H₃₂ClN₇O₄ 602.2283, found 602.2253.

To a solution of amino pyrazinone EX-47A (1.9093 g, 2.684 mmol) in 10.0 mL dimethyl formamide (0.25 M) was added triethylamine (1.90 mL, 13.63 mmol) To the resulting mixture was then added N,N′-di-BOC-N′-triflylguanidine (1.4021 g,3.583 mmol, prepared according to Feichtinger, K., Zapf, C., Sings, H. L., and Goodman, M., J. Org. Chem., 63, 3804-3805 (1998)) in one portion at room temperature. The resulting suspension was allowed to stir over night. The reaction mixture was diluted ethyl acetate (250 mL) and washed with saturated NaHCO₃ (2×100 mL) and brine (2×100 mL). The organic solution was dried (MgSO₄), filtered and concentrated. Purification by MPLC (75% ethyl acetate/hexanes) afforded EX-47B: ¹H NMR (400 MHz, CDCl₃) d 11.53 (s, 1H), 8.55-8.48 (m, 2H), 7.97-7.93 (m, 4H), 7.49-7.24 (m, 13H), 5.13 (s, 2H), 4.30-4.25 (m, 4H), 3.90-3.33 (m, 4H), 1.84-1.79 (m, 2H), 1.49 (s, 9H), 1.41 (s, 9H); HRMS (EI) calcd for C₄₂H₅₁ClN₉O₈ 844.3549, found 844.3521.

A solution of pyrazinone EX-47B (1.5450 g, 1.8298 mmol) in 18.0 mL ethanol/4 M HCl in dioxane (3:1, 0.1 M) was flushed with hydrogen gas. To the solution was then added 157.2 mg 10% Pd/C (wet), and the resulting suspension was stirred at room temperature under an atmosphere of hydrogen (balloon pressure) for approximately 18 hours. The reaction mixture was filtered through a pad of Celite 545 and rinsed with ethanol. The solvent was removed under reduced pressure. The resulting oil was triturated with ethyl ether to provide the pure product in 63% yield: ¹H NMR (400 MHz, DMSO) d 9.50 (s, 2H), 9.28 (s, 2H), 8.77 (s, 1H), 7.91 (s, 1H), 7.81-7.79 (m, 3H), 7.42 (br s, 4H), 7.26-7.24 (m, 5H), 6.28 (br s, 2H), 4.23-4.21 (m, 4H), 3.36-3.27 (m, 2H), 3.14-3.13 (br m, 2H), 1.77-1.74 (m, 2H); HRMS (ES) calcd for C₂₄H₂₉ClN₉O₂ 510.2133, found 510.2080.

Example 48

Using the method of Example 47 and substituting 1-(N-{4-[N-benzyloxycarbonylamidino]benzylamido}carbonylmethyl)-3-({2-[(tert-butoxy) carbonylamino]ethyl}amino)-5-chloro-6-phenylpyrazinone hydrochloride, prepared as an intermediate in Example 44, for the propyl analog used in Example 47, the product was prepared: ¹H NMR (400 MHz, DMSO) d 9.51 (s, 2H), 9.29 (s, 2H), 8.80 (s, 1H), 7.90-7.78 (m, 5H), 7.43-7.37 (m, 51), 7.35-7.23 (m, 5H), 4.23 (s, 4H), 4.03 (s, 2H), 3.40-3.34 (m, 4H); HRMS (EI) calcd for C₂₃H₂₇ClN₉O₂ 496.1976, found 496.1952.

Example 49

By following the method of Example 47 and substituting 1-(N-{4-[N-benzyloxycarbonylamidino]benzylamido}carbonylmethyl)-3-({4-[(tert-butoxy)carbonylamino]butyl}amino)-5-chloro-6-phenylpyrazinone hydrochloride (2.0075 g, 2.859 mmol), prepared as an intermediate in Example 46, for the propyl analog used in Example 47, the product was prepared: ¹H NMR (400 MHz, DMSO) d 9.47 (s, 2H), 9.28 (s, 2H), 8.74-8.72 (m, 1H), 7.88 (br s, 1H), 7.80-7.73 (m, 3H), 7.43-7.31 (m, 4H), 7.27-7.20 (m, 5H), 5.36-5.32 (m, 3H), 4.25-4.21 (m, 4H), 3.28-3.27 (m, 2H), 3.10-3.08 (m, 2H), 1.58-1.53 (m, 2H), 1.48-1.43 (m, 2H); HRMS (EI) calcd for C₂₅H₃₁ClN₉O₂ 524.2289, found 24.2292.

Example 50

To a solution of 2-{5-chloro-3-[(2-cyanoethyl)amino]-2-oxo-6-phenylhydropyrazinyl}acetic acid (2.09 g, 6.28 mmol) in 31.0 mL dimethylformamide/tetrahydrofuran (1:1) was added N,N-diisopropylethylamine (5.50 mL, 31.57 mmol), N-hydroxybenzotriazole (1.02 g, 7.6 mmol), and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (1.45 g 7.51 mmol). The resulting mixture was stirred for 30 minutes. To the reaction mixture was then added 4-cyanobenzylamine (1.28 g, 7.57 mmol) in one portion. The resulting mixture was allowed to stir over night. The reaction mixture was diluted with ethyl acetate (250 mL) and washed with 5% citric acid (1×50 mL), saturated NaHCO₃ (1×50 mL), and brine (1×50 mL). The organic solution was dried (Mg₄SO₄), filtered and concentrated. The crude reaction was purified trituration with ethyl ether to give EX-50A: ¹H NMR (300 MHz, DMSO) δ 8.59 (t, J=5.6 Hz, 1H), 8.10 (t, J=5.6 Hz, 1H), 7.82 (d, J=8.1 Hz, 2H), 7.53-7.46 (m, 3H), 7.35-7.32 (m, 4H) 4.33-4.29 (m, 4H), 3.63-3.57 (m, 2H), 2.89 (t, J=6.3 Hz, 2H); ¹³C NMR (75 MHz, DMSO) δ 166.7, 151.1, 149.6, 145.6, 132.93, 132.45, 131.16, 130.21, 129.55, 128.63, 124.97, 124.72, 120.0, 119.6, 110.4, 49.3, 42.6, 37.3, 17.3; HRMS (EI) calcd for C₂₃H₂₀ClN₆O₂ 447.1336, found 447.1330.

To a suspension of bis-nitrile pyrazinone EX-50A (2.26, 58.07 mmol) in 50 mL ethanol/H₂O (2.6:1, 0.1 M) was added hydroxyl amine hydrochloride (2.61 g,37.6 mmol) followed by potassium carbonate (3.08 g, 22.3 mmol). The resulting white suspension was stirred and heated to 60° C. overnight. The reaction mixture was cooled to room temperature and diluted with water (75.0 ml). The mixture was placed in an ice bath, and the pH was adjusted to approximately 7 using dilute acid. The precipitate that formed was collected by filtration, washed with cold water and dried under vacuum to afford pure EX-50B: ¹H NMR (300 MHz, DMSO) δ 9.63 (s, 1H), 8.95 (s, 1H), 8.47 (br s, 1H), 7.66-7.61 (m, 2H), 7.53-7.47 (m, 4H), 7.32 (d, J=5.2 Hz), 7.16-7.13 (m, 2H), 5.83 (s, 2H), 5.47 (s, 2H), 4.25 (s, 4H), 3.61-3.53 (m, 2H), 2.39-2.35 (m, 2H); ¹³C NMR (75 MHz, DMSO) δ 166.5, 151.68, 151.35, 151.23, 149.6, 140.3, 132.70. 132.63, 131.3, 130.1, 129.5, 127.6, 126.0, 125.3, 49.2. 42.6, 38.4, 30.6; HRMS (EI) calcd for C₂₃H₂₆ClN₈O₄ 513.1766, found 513.1735.

To a solution of Bis-hydroxyamidine EX-50B (2.40 g, 4.67 mmol) in 19.0 mL acetic acid (0.25 M) was added acetic anhydride (1.80 mL, 19.1 mmol). The resulting mixture was stirred for 10 minutes and flushed with hydrogen gas. To the solution was then added Pd/C (wet) and the resulting mixture was allowed to stir under an atmosphere of hydrogen (balloon pressure) at room temperature, over night. The reaction mixture was filtered through a pad of Celite 545 and concentrated under vacuum. Purification by HPLC (1% acetonitrile to 60% acetonitrile/H₂O/0.1% trifluoroacetic acid) afford pure product: ¹H NMR (400 MHz, DMSO) δ 9.51 (s, 2H), 9.30 (s, 2H), 9.03 (s, 2H), 8.93 (s, 2H), 8.62-8.59 (m, 1H), 7.89-7.86 (m, 2H), 7.74 (d, J=8.3 Hz, 2H), 7.47-7.40 (m, 3H), 7.28-7.23 (m, 4H), 4.27-4.24 (m, 4H), 3.63-3.59 (m, 2H), 2.70-2.68 (m, 2H); HRMS (EI) calcd for C₂₃H₂₆ClN₈O₂ 481.1867, found 481.1836.

Example 51

By following, the method of Example 50 and substituting 2-{5-chloro-3-[(4-cyanobenzyl)amino]-2-oxo-6-phenylhydropyrazinyl}acetic acid for the 2-cyanoethylamino analog, the product was prepared: ¹H NMR (400 MHz, DMSO) d 9.44 (d, J=16.9 Hz, 3H), 9.26 (d, J=17.2 Hz, 8.61 (br s, 1H), 8.47-8.44 (m, 1H), 7.74 (d, J=7.0 Hz, 4H), 7.52 (d, J=Hz, 2H), 7.43-7.42 (m, 3H), 7.28-7.22 (m, 4H), 4.56-4.55 (m, 2H), 4.25 (s, 4H); HRMS (EI) calcd for C₂₈H₂₈ClN₈O₂ 543.2024, found 543.1986.

Example 52

By following the method of Example 50 and substituting 2-{5-chloro-3-[(3-cyanobenzyl)amino]-2-oxo-6-phenylhydropyrazinyl}acetic acid for the 2-cyanoethylamino analog, the product was prepared: ¹H NMR (400 MHz, DMSO) d 9.41 (s, 4H), 9.28 (d, J=11.0 Hz, 4H), 8.61-8.58 (m, 1H), 8.35-8.32 (m, 1H), 7.77-7.72 (m, 3H), 7.66-7.64 (m, 2H), 7.55-7.52 (m, 1H), 7.45-7.39 (m, 3H), 7.29-7.23 (m, 4H), 4.57-4.55 (m, 2H), 4.26-4.21 (m, 4H); ¹³C NMR (100 MHz, DMSO) d 166.7, 166.1, 159.8, 159.4, 151.2, 149.6, 145.9, 140.6, 133.3, 132.4, 131.1, 130.1, 129.6, 129.5, 129.1, 128.7, 127.93, 127.86, 127.3, 124.9, 124.5, 49.1, 44.0, 42.4; HRMS (EI) calcd for C₂₈H₂₈ClN₈O₂ 543.2024, found 543.2032.

Example 3

To a solution of 2-{5-chloro-3-[(2-cyanoethyl)amino]-2-oxo-6-phenylhydropyrazinyl}acetic acid (1.45 g, 3.25 mmol) in 17.0 mL dimethylformamide was added N,N-diisopropylethylamine (3.00 mL, 17.2 mmol), N-hydroxybenzotriazole (0.536 mg, 3.96 mmol), and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (0.752 mg, 3.923 mmol). The resulting mixture was allowed to stir for 30 minutes. The reaction mixture was then added the Cbz protected amidine (1.2631 g, 3.950 mmol) prepared and used in Example 44 in one portion. The resulting mixture was allowed to stir over night. The reaction mixture was diluted with ethyl acetate (250 mL) and washed with 5% citric acid (1×50 mL), saturated NaHCO₃ (1×50 mL), and brine (1×50 mL). The organic solution was dried (MgSO₄), filtered and concentrated. The crude reaction was purified by MPLC (100% ethyl acetate) to give pure EX-53A in 82% yield: ¹H NMR (400 MHz, DMSO) δ 9.06 (br s, 1H), 8.50-8.47 (m, 1H), 8.05-8.02 (m, 1H), 7.89 (d, J=8.2 Hz, 2H) 7.46-7.26 (m, 11H), 7.18 (d, J=8.2 Hz, 2H), 5.07 (s, 2H), 4.24-4.21 (m, 4H), 3.55-3.51 (m, 2H), 2.83-2.80 (m, 2H); HRMS (EI) calcd for C₃, H₂₈ClN₇O₄ 598.1970, found 598.1970.

To a solution of pyrazinone EX-53A (1.497 g, 2.50 mmol) in 25.0 mL ethanol/4 M HCl in dioxane (3:1, 0.1 M) was flushed with hydrogen gas. To the solution was then added 10% Pd/C (wet) and the resulting suspension was allowed to stir at room temperature under an atmosphere of hydrogen (balloon pressure) for approximately 18 hours. The reaction mixture was filtered through a pad of Celite 545 and rinsed with ethanol. The solvent was removed under reduced pressure. Purification by HPLC (5% acetonitrile to 95% acetonitrile/H₂O/0.1% trifluoroacetic acid) provided pure product: ¹H NMR (400 MHz, DMSO) d 9.51 (s, 2H), 9.29 (s, 2H), 8.63-8.60 (m, 1H), 8.03-8.00 (m, 1H), 7.74 (d, J=8.3 Hz, 2H), 7.44-7.40 (m, 3H), 7.29-7.27 (m, 4H), 4.27-4.24 (m, 4H), 3.55-3.51 (m, 3H), 2.83-2.80 (m, 3H); HRMS (ES) calcd for C₂₃H₂₃ClN₇O₂ 464.1602, found 464.1624.

Example 54

A solution of p-bromophenethylamine (40 g, 199-92 mmol) and phthalic anhydride (29.6 g, 199.84 mmol) in 250 mL of dioxane and 25 mL of dimethylformamide was heated at 120° C. for 24 hours. The flask was then cooled, and the resulting white precipitate was filtered and washed with methanol (200 mL) to give EX-54A in exceptional yield and purity: ¹H NMR (400 MHz, CDCl₃) d 7.8 (m, 2H), 7.7 (m, 2H), 7.4 (d, 2H), 7.1 (d, 2H), 3.8 (t, 2H), 2.95 (t, 2H); MS (ES) calcd for C₁₆H₁₂BrNO₂ 330, found 331 (M+H).

A nitrogen purged solution of EX-54A (40 g, 121.15 mmol) and copper (I) cyanide (16.28 g, 181.72 mmol) in 500 mL of dimethylformamide was heated at 170° C. for 24 hours. The solvent was removed under vacuum, and the resulting material was taken up in ethyl acetate. The ethyl acetate suspension was flashed through celite and concentrated under vacuum. The resulting white precipitate EX-54B was of exceptional yield and purity: ¹H NMR (300 MHz, CDCl₃) d 7.82 (m, 2H), 7.75 (m, 2H), 7.6 (d, 2H), 7.35 (d, 2H), 3.95 (t, 2H), 3.05 (t, 2H); MS (ES) calcd for C₁₇H₁₂N₂O₂ 276, found 277 (M+H).

A solution of p-cyanophenethylamine EX-54B (25 g, 90.48 mmol) and hydroxylamine hydrochloride (8 g, 115.12 mmol) in 1 L of ethanol and 20 mL (114.82 mmol) of diisopropylethylamine was heated at reflux for 16 hours. The flask was then cooled, and the resulting white precipitate was filtered and air dried to give EX-54C in an adequate yield and purity: ¹H NMR (300 MHz. DMSO) d 7.75 (d, 2H), 7.55 (d, 2H), 7.25 (d, 2H), 7.2 (d, 2H), 3.8 (m, 2H), 2.95 (m, 2H); MS (ES) calcd for C₁₇H ₁₅N₃O₃ 309, found 310 (M+H).

A solution of p-(N-hydroxy)amidinophenethyl phthalimide (EX-54C) (4.53 g, 14.64 mmol) in 200 mL of chloroform was treated with hydrazine monohydrate (1 mL, 20.62 mmol). The reaction was stirred vigorously at 50° C. for 24 hours. The flask was then cooled and the resulting white precipitate was filtered and washed with chloroform (200 mL). A 50:50 mixture of product EX-54D and phthalhydrazide was obtained and used as is: ¹H NMR (300 MHz, DMSO) d 7.6 (d, 2H), 7.2 (d, 2H), 2.8 (t, 2H), 2.7 (m, 2H); MS (ES) calcd for C₁₇H₁₅N₃Q₃ 179, found 180 (M+H).

Reacting EX-54D containing phthalhydrazide with 2-{5-chloro-6-(3-nitrophenyl)-3-[N-(1-methylethyl)amino]-2-oxohydropyrazinyl}acetic acid in place of 2-{5-chloro-6-(3-nitrophenyl)-3-cyclobutylamino-2-oxohydropyrazinyl}acetic acid and EX-27D and then hydrogenating the resulting intermediate according to the final two procedures described in Example 27 gave the product with an m/z+1 of 484.

Example 55

A solution of diisopropylamide (35.3 ml, 0.251 moles) in tetrahydrofuran (500 ml) was cooled to −78° C. under a nitrogen blanket. To this was added 1.6M n-butyllithium in hexanes (157 ml, 0.251 moles) and allowed to stir for 5 min. Then slowly added thiopene-2-carbonitrile (21.33 ml, 0.229 moles) in tetrahydrofuran (115 ml) and allowed to stir. After 45 min. was added NN-dimethylformamide (88.66 ml, 1.145 moles) at −78° C. Citric acid (40 g) was added after 2 h. followed by water (240 ml) and stirred for 18 h. The reaction was concentrated in vacuo, transferred to a separatory funnel, diluted with brine, and extracted twice with ether. The combined ether layers were washed with brine, dried over magnesium sulfate. filtered, and the solvent removed in vacuo. Chromatography yielded 15.8 g (50%) of 2-cyano-5-formylthiophene (EX-55A) as a brown solid: ¹H NMR (300 MHZ, CDCl₃) d 10.02 (s, 1H), 7.79 (m, 1H), 7.30 (m, 1H).

2-Cyano-5-formylthiophene (EX-55A) (15.8 g, 0.229 moles) was stirred in ethanol (375 ml), and sodium borohydride (4.36 g, 0.15 moles) added in small portions. After 15 min., the solvent was removed in vacuo, and residue taken up in ethyl acetate. After the ethyl acetate was washed with 1N potassium hydrogen sulfate and brine, the organic layer was dried over magnesium sulfate, filtered, and solvent removed in vacuo. The residue was dried on vacuum pump to yield 9.57 g (59%) of the alcohol EX-55B as a brown-orange oil: ¹H NMR (300 MHz, CDCl₃) d 7.53 (m, 1H), 7.00 (m, 1H), 4.88 (s, 2H), 2.84 (br s, 1H).

To a stirring solution of EX-55B (9.57 g, 0.069 moles) in tetrahydrofuran (80 ml) was added triphenylphosphine (19.86 g, 0.075 moles) and carbon tetrabromide (25.11 g, 0.075 moles). After 18 h. the reaction was concentrated in vacuo, and the crude material chromatographed to yield EX-55C as a brown oil: ¹H NMR (300 MHz, CDCl₃) d 7.52 (m, 1H), 7.14 (m, 1H), 4.69 (s,2H).

2-Arminomethyl-5-carbobenzyloxyamidinothiophene dihydrogen chloride salt (EX-55D) was prepared by the method outlined in Synthetic Communications, 28(23), 4419-4429 (1998) by substituting 5-bromomethyl-2-cyanothiophene (EX-55C) for 4-cyanobenzyl bromide to give after trituration with acetonitrile EX-55D: ¹H NMR (300 MHz, DMSO) d 9.98 (br s, 1H), 8.83 (br s, 2H), 8.10 (s, 1H), 7.40-7.48 (m, 7H), 5.26 (s, 2H), 4.31 (s, 2H); HRMS calcd for C₁₄H₁₆N₃O₂S 290.0963, found 290.0949.

Reacting EX-55D with 2-{5-chloro-6-(3-nitrophenyl)-3-[N-(1-methylethyl)amino]-2-oxohydropyrazinyl}acetic acid in place of 2-{5-chloro-6-(3-nitrophenyl)-3-cyclobutylamino-2-oxohydropyrazinyl}acetic acid and EX-27D and then hydrogenating the resulting intermediate according to the final two procedures described in Example 27 gave the product with an m/z+1 of 474.

Example 56

To a stirring solution of 3-cyano-6-methylpyridine (20 g, 0.169 moles) in carbon tetrachloride (850 ml) was added N-bromosuccinimde (30 g, 0.169 moles) and benzoyl peroxide (4.1 g, 0.0169 moles), and the solution was heated to reflux. After 18 h, the heat was discontinued, diluted with carbon tetrachloride (1L) and washed twice with water (1L). The solvent was removed in vacou and the crude material chromatooraphed to yield 12.05 g (36%) of dark brown solid EX-56A: ¹H NMR (300 MHz, CDCl₃) d 8.86 (d, 1H), 7.00 (m, 1H), 7.62 (m, 1H), 4.60 (s, 2H); ¹³C NMR (300 MHz, CDCl₃) d 156.38, 147.70, 135.82, 118.98, 111.75, 104.66, 27.82; HRMS (EI) calcd for C₇H₆BrN₂ 196.9714, found 196.9661.

2-Aminomethyl-5-carbobenzyloxyamidinopyridine dihydrogen chloride salt (EX-56B) was prepared by the method outlined in Synthetic Communications, 28(23), 4419-4429 (1998) by substituting 5-bromomethyl-2-cyanopyridine (EX-15A) for 4-cyanobenzyl bromide to give EX-56B: HPLC/LRMS; 98%, (M+H)⁻ 285.

Reacting EX-56B with 2-{5-chloro-6-phenyl-3-[N-(2-phenylethyl)amino]-2-oxohydropyrazinyl}acetic acid in place of 2-({-chloro-6-(3-nitrophenyl)-3-cyclobutylamino-2-oxohydropyrazinyl}acetic acid and EX-27D and then hydrogenating the resulting intermediate according to the final two procedures described in Example 27 gave the product with an m/z+1 of 482.

Example 57

2-Cyano-5-methylpyridine (EX-57A) was prepared following the procedure outlined in Synthetic Commnunications, 19(13&14), 2371-2374(1989): HRMS (EI) calcd for C₇H₇N₂ 119.0609, found 119.0587.

By following the procedure of Example 56 and substituting 2-cyano-5-methylpyridine for 3-cyano-6-methylpyridine, the intermediate 5-bromomethyl-2-cyanopyridine (EX-57B) was prepared.

2-Aminomethyl-5-carbobenzyloxyamidinopyridine dihydrogen chloride salt (EX-57C) was prepared by the method outlined in Example 56 substituting 5-bromomethyl-2-cyanopyridine for 6-bromomethyl-3-cyanopyridine: HPLC/LRMS; 95%, (M+H)⁺285.

Reacting 2-Aminomethyl-5-carbobenzyloxyamidinopyridine dihydrogen chloride salt (EX-57C) with 2-{5-chloro-6-phenyl-3-[N-(2-phenylethyl)amino]-2-oxohydropyrazinyl}acetic acid as described in Example 56 gave the product with an m/z+1 of 482.

Example 58

2-Aminomethyl-5-cyanopyridine hydrochloride (EX-58A) was prepared by the deprotection with 4N HCl Dioxane of the intermediate 2-{N,N-bis-(tert-butoxycarbonyl)aminomethyl}-5-cyanopyridine used to prepare 2-aminomethyl-5-carbobenzyloxyamidinopyridine dihydrogen chloride salt in Example 56: ¹H NMR (400 MHz, DMSO) d 9.04 (s, 1H), 8.64 (br s, 2H), 8.34 (m, 1H), 7.69 (m, 1H), 4.25 (s, 2H); HRMS (EI) calcd for C₇H₈N₃ 134.0718, found 134.0699.

Using the procedure of Example 44 by substituting 2-[5-chloro-3-(N-{1-methylethyl}amino)-2-oxo-6-phenylhydropyrazinyl]acetic acid (EX-1D) for 2-[3-({2-[(tert-butoxy)carbonylaminolethyl}amino)-5-chloro-2-oxo-6-phenylhydropyrazinyl]acetic acid, EX-58A was converted to the product which gave an m/z+1 of 482.

Example 59

4-cyanobenzylamine hydrochloride (EX-59A) was prepared from 10 g (0.030 moles) of 4-{N,N-bis-(tert-butoxycarbonyl)aminomethyl}benzonitrile, prepared following Synthetic Communication, 28(23), 4419-4429 (1998), by stirring it in 4N HCl Dioxane (75 ml). After 3 h, the solution was concentrated in vacuo and triturated with ether. The solid was collected by filtration and vacuum dried to yield 5 g (98%) of EX-59A as a white solid: ¹H NMR (DMSO) d 8.68 (br s, 2H), 7.84 (m, 2H), 7.67 (m, 2H), 4.06 (s, 2H); HRMS (EI) calcd for C₈H₈N₂ 133.0766, found 133.0807

Using the procedure of Example 58, EX-59A was converted to the product which gave an m/z+1 of 481.

Using the procedures of Scheme 1, Scheme 2, and the Examples herein with suitable reagents, starting materials, and intermediates, additional pyrazinones of the present invention were prepared and these pryazinones are summarized in Table 3.

TABLE 3
Additional Substituted Pyrazinones of the Present Invention Prepared
based on the Procedures of Scheme 1, Scheme 2, and Examples herein.
General Structure
Ex.				MW
No.	R2	B—A—	YO	(m/z + 1)
60	Phenyl	2-phenylethyl	4-amidinobenzyl	487
61	3-Nitrophenyl	isopropyl	4-(N-hydroxyami-	514
			dino)benzyl
62	3-Aminophenyl	isopropyl	2-(4-amidinophe-	482
			nyl)ethyl
63	Phenyl	2-phenylethyl	2-(4-amidinophe-	495
			nyl)ethyl
64	3-Carbomethoxy	isopropyl	4-amidinobenzyl	511
	phenyl
65	3-Carboxyphenyl	isopropyl	4-amidinobenzyl	497
66	2-hydroxyphenyl	cyclobutyl	4-amidinobenzyl	481
67	3-hydroxyphenyl	cyclobutyl	4-amidinobenzyl	481
68	3-acetamido	isopropyl	2-(4-amidinophe-	524
	phenyl		nyl)ethyl

1-Benzyloxycarbonylmethyl-6-(5-bromothiophen-2-yl)-3,5-dichloro pyrazinone (EX-69A) was synthesized as described in the general schemes of the patent and as described, for example, specifically for EX-1B substituting 5-bromothiophenecarbaldehyde for benzaldehyde. EX-69A is a yellow crystalline solid: HPLC-MS (5 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 4.38 min, M+Na⁺=494.9 for formula C₁₇H₁₁BrCl₂N₂O₃SNa; ¹H NMR (400 MHz, CDCl₃): d 4.62 (s, 2H), 5.19 (s, 2H), 6.79 (d, J=4.0 Hz, 1H), 7.00 (d, J=4.0 Hz, 1H) 7.32 (m, 2H), 7.37 (m, 3H); ¹³ C NMR (101 MHz, CDCl₃): d 49.0, 68.1, 117.8, 126.5, 128.6, 128.7, 128.8, 130.1, 130.7,132.0, 134.5, 147.8, 151.9, 166.2.

EX-69A (12.15 , 25.75 mmol) was treated with cyclobutylamine (3.80 g, 53.52 mmol) in 250 ml toluene at room temperature for 4 hours. The toluene solution was washed with saturated ammonium chloride solution and dried over anhydrous MgSO₄. After removing the toluene, the pure product EX-69B was obtained as a yellow solid (13.05 , 99%): HPLC-MS (5 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50 ° C.): retention time 4.90 min, M+H⁺=508.0 for formula C₂₁H₂₀BrClN₃O₃S.

Potassium phthalimide (4.56 g, 24.6 mmol) and CuI (18.0 A 94.7 mmol) were mixed in 200 ml dimethylacetamide. The mixture was stirred at room temperature for 10 minutes. To this mixture was added compound EX-69B (12.0 g, 23.7 mmol). The resulting mixture was heated to 160° C. and stirred for 5 hours at an open air atmosphere. The reaction solution was filtered to remove all the insoluble solid and was concentrated via high vacuum distillation at a rotavapor. Aqueous work-up and silica gel flush chromatography yielded the pure product EX-69C as light yellow solid (6.8 g, 50%) with the des-bromo side product formation the reason for the low yield: HPLC-MS (5 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50 ° C.): retention time 3.82 min, M+H⁺=575.5 for formula C₂₉H₂₄ClN₄O₅S; ¹H NMR (400 MHz, CDCl₃): d 1.69 (m, 2H), 1.92 (m, 2H), 2.36 (m, 2H), 4.45 (m, 1H), 4.49 (s, 2H), 5.07 (s, 2H), 6.54 (d, J=8.0 Hz, 1H), 6.75 (d, J=3.6 Hz, 1H), 7.17-7.25 (m, 7H), 7.50 (d, J=4.0 Hz, 1H), 7.71 (dd, J=2.8, 5.2 Hz, 2H), 7.85 (dd, J=2.8, 5.2 Hz, 2H); ¹³C NMR (101 MHz, CDCl₃): d 15.2, 30.9, 45.8, 47.4, 67.4, 114.7, 118.2, 123.9, 126.5, 128.28, 128.33, 128.36, 128.39, 128.42, 128.45, 129.5, 129.9, 131.1, 134.8, 134.9, 135.7, 148.5, 150.8, 165.2, 166.9.

EX-69C (0.55 g, 0.96 mmol) was treated with 1 ml hydrazine in 10 ml methanol and 5 ml dichloromethane for 4 hours. The reaction solution was acidified with 1N HCl and filtered to remove the solid by-product. Aqueous work-up yield the crude (90% pure) product EX-69D (0.49 g): HPLC-MS (5 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 3.29 min, M+H⁺=445.3 for formula C₂₁H₂₂ClN₄O₃S.

EX-69D (0.48 g, 1.08 mmol) was mixed with Boc anhydride (0.28 g, 1.30 mmol), triethylamine (0.22 g, 2.16 mmol) and DMAP(12 mg, 0.1 mmol). The reaction mixture was stirred for 4 hours at room temperature. After an aqueous work-up, the crude product in 2 ml CH₃CN and 2 ml THF was treated with 2 ml 1M LiOH for 3 hours. Aqueous work-up yield the crude carboxylic acid EX-69E: HPLC-MS (5 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 3.18 min, M+H⁺=455.4 for formula C₁₉HN₄ClN₄O₅S.

EX-69E was coupled with the protected amidine, 4-(N-benzyloxycarbonylamidino)benzylamine hydrogen chloride salt, prepared using the procedure outlined Synthetic Communications, 28(23), 4419-4429 (1998) in the same way as described before using EDC, HOBt and DIEA in DMF to give the protected product EX-69F. EX-69F was purified by reverse phase HPLC using C18 column to give an off-white amorphous solid: HPLC-MS (5 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50 ° C.): retention time 3.28 min, M+H⁺=720.9 for formula C₃₅H₃₈ClN₇O₆S; ¹H NMR (400 MHz, CDCl₃): d 1.49 (s, 9H), 1.80 (m, 2H), 2.03 (m, 2H), 2.45 (m, 2H), 4.3 (b. 2H). 4.49 (b, 3H), 5.07 (s, 2H), 6.66-6.78 (m, 2H), 7.0-7.18 (m, 2H), 7.33-7.47 (m, 5H).

EX-69F was converted to the product by hydrogenation as described before. After the hydrogenation, it was treated with HCl saturated methanol solution to remove the Boc group. The product was purified by reverse phase HPLC with a C18 column with amobile phase was 0.1% TFA in water and acetonitrile to give the product as a TFA salt and an off-white amorphous solid: HPLC-MS (5 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 1.94 min, M+H⁺=486.4 for formula C₂₂H₂₅ClN₇O₂S; ¹H NMR (400 MHz, methanol-d₄): d 1.79 (m, 2H), 2.06 (m, 2H), 2.39 (m, 2H), 4.45 (s, 2H), 4.46 (m, 1H), 4.57 (s, 1H), 4.58 (s, 1H), 6.01 (d, J=4 Hz, 1H), 6.52 (m, 1H), 7.49 (d, J=8.4 Hz, 2H), 7.75 (m, 2H).

Sulfonyl analogs of pyrazinones wherein a sulfonyl is present as a replacement for the carbonyl of the acetamide at the N-1 position of the pyrazinone can be prepared using Scheme 3: Sulfonyl Pyrazinone detailed below along with the specific Example 70.

Benzaldehyde (1 eq.) is added slowly by syringe to a solution of aminomethanesulfonic acid (1 eq.) in dichloromethane at room temperature. Trimethylsilyl cyanide (1 eq.) is added dropwise via syringe over a 10 minute period. The reaction is stirred for 4 hours at room temperature and then concentrated under reduced pressure. The residue is diluted with ethyl acetate, washed with brine, dried (MgSO₄), and concentrated. The residue is diluted with ethyl acetate (80 mL) and 9.9 M HCl (1.05 eq.) in ethanol is added (prepared by addition of 28.90 mL acetyl chloride to 41.0 mL cold ethanol), resulting in precipitation of the intermediate product EX-70A. The precipitate is collected by filtration, washed with ethyl, ether, and dried to give pure product EX-70A.

To a suspension of 1 eq. of EX-70A in dry 1,2-dichlorobenzene (1.0 M) is added oxalyl chloride (4 eq.) with stirring at room temperature. The resulting suspension is heated at 100° C. for approximately 18 hours. The reaction is allowed to cool to room temperature and the volatiles are removed under reduced pressure. The remaining solution is passed through a silica gel column (hexane flush, followed by 50% ethyl acetate/hexanes). Concentration of the solution gives crude product EX-70B, which is purified by column chromatography.

Phenethylamine (3 eq.) is added to a solution of EX-70B (1 eq.) in ethyl acetate at room temperature. The resulting solution is heated at reflux for 18 hours. The solution is allowed to cool to room temperature, resulting in formation of a thick precipitate. The reaction mixture is diluted with ethyl acetate, washed with 0.5 N HCl, saturated NaHCO₃ and brine. The organic solution is dried (MgSO₄), filtered and concentrated to give the crude product. Recrystallization from ethyl acetate and hexanes affords pure product EX-70C.

A solution of 1 eq. of EX-70C in dichloromethane with several drops of dimethylformamide added is cooled to 0° C. Thionyl chloride (1.1 eq.) is added dropwise and the solution is slowly warmed to room temperature. After completion of the reaction, the volatile components are removed under reduced pressure and the product EX-70D is immediately used in the next step.

To the sulfonyl chloride EX-70D (1 eq.) in dichloromethane is added the amine, 4-(N-tert-butoxycarbonylamidino)benzylamine hydrochloride, in DMF with 5 eq. of N-methylmorpholine. After completion of the reaction, polyaldehyde and/or polyamine resin (10 eq.) are added to remove any unreacted starting materials. The resins are filtered, rinsed with DMF/DCM (1:1) and the solvents are removed under reduced pressure to give pure product EX-70E.

To 1 eq. of EX-70E is added 40 eq. of 4 M HCl/dioxane. The resulting solution is stirred at room temperature overnight. The solution is concentrated and the crude product is triturated from solvent to afford pure product.

Methylene analogs of pyrazinones wherein a methylene is present as a replacement for the carbonyl of the acetamide at the N-1 position of the pyrazinone can be prepared using Scheme 4: Methylene Pyrazinone detailed below along with the specific Example 71.

Example 71

Diisobutylaluminum hydride (1.05 equiv.) is added over a period of 15 min to a cooled solution (−78° C.) of 1 eq. of 1-benzyloxycarbonylmethyl-5-chloro-6-phenyl-3-(2-phenylethylamino)pyrazinone in tetrahydrofuran . After stirring for 1 h at −78° C. the reaction is slowly quenched at −78° C. with cold methanol. The mixture is slowly poured into ice-cold IN HCl and the aqueous mixture is extracted with ethyl acetate. The combined organic layers are washed with brine, dried with MgSO₄, filtered, and the solvents are removed under reduced pressure. The crude product is purified by column chromatography to afford purified product EX-71A.

Sodium triacetoxyborohydride (1.2 eq.) and a catalytic amount of acetic acid are added to a suspension of 1.0 eq. of EX-71A and 1.0 eq. of the amine, 4-(N-tert-butoxycarbonylamidino)benzylamine hydrochloride, in dichloromethane. The suspension quickly clears and becomes homogeneous. The reaction is stirred for several hours. The solution is cooled in an ice bath and basified with 1.0 N NaOH. The reaction mixture is diluted with dichloromethane and washed with brine. The organic solution is dried (MgSO₄), filtered and concentrated to give the crude product. The crude product is purified by silica gel chromatagraphy to afford purified product EX-71B.

To 1 eq. of EX-71B is added 40 eq. of 4 M HCl/dioxane. The resulting solution is stirred at room temperature overnight. The solution is concentrated and the crude product is triturated from ethyl ether to afford pure product.

General Robotics and Experimental Procedure for the Robotic Parallel Synthesis of a Series of Amides E-i and Z-i from A-i

Scheme 5 specifically illustrates the derivatization of the scaffold A-i to afford the desired product D-i in a parallel array synthesis format. In a parallel array synthesis reaction block, individual reaction products were prepared in each of multiple reaction block vessels in a spatially addressed format. A solution of the desired scaffold A-i (limiting amount) in acetonitrile (ACN) was added to the reaction vessels followed by a three-fold stoichiometric excess solution of the primary amine B-i in acetonitrile. Excess primary amine was used as a base and to effect complete conversion of scaffold A-i to product C-i. The reaction mixtures were incubated at 70° C. for 16-20 h. After cooling to ambient temperature, each reaction vessel was charged with one mL of methanol and an excess (3-4 fold stoichiometric excess) of aqueous potassium hydroxide. The reaction block was shaken vertically for 14-20 h on an orbital shaker at ambient temperature. The contents of each reaction vessel were then acidified with aqueous HCl. Each reaction vessel was then opened, and the solutions were evaporated to dryness under N₂ and/or a Savant apparatus. Polyamine resin R-1 (10-15 fold stoichiometric excess) was added to the solid carboxylic acid followed by dichloromethane and water (10:1). The mixture was shaken laterally for 14-20 h on an orbital shaker at ambient temperature (rotating the vials at least once so each side of the vial was agitated for a minimum of 2 h). The desired product D-i was sequestered away from the reaction by-products and excess reactants as the insoluble adduct D-x. Simple filtration of the insoluble resin-adduct D-x and rinsing of the resin cake with DMF, DCM, MeOH, and DCM afforded the desired resin-bound product. After drying the resin under vacuum for 2 h, an excess of HCl/dioxane (7-8 fold stoichiometric excess based on the loading of amine functionality) along with dichloromethane was added to each reaction vessel to cleave the desired product D-i from the resin. The reaction block was shaken laterally for 2-20 h on an orbital shaker at ambient temperature. Simple filtration of the solution, rinsing of the resin cake with dimethylformamide/dichloromethane, and evaporation of the solvents afforded the desired product D-i in purified form.

Scheme 6 and Scheme 7 illustrate the conversion of the carboxylic acid-containing scaffold D-i to the desired amide product E-i in a parallel synthesis format. A unique scaffold D-i was added as a solution in dichloromethane/dimethylformamide to each reaction vessel. A solution of hydroxybenzotriazole B-2 in dichloromethane/dimethylformamide was added to each reaction vessel, followed by the polymer-bound carbodiimide reagent R-2 (1.5 fold stoichiometric excess). The parallel reaction block was agitated vertically on an orbital shaker for 30 min to 1 h. A limiting amount of the same amine B-3 (0.8 equivalents) in DMF, along with a 3 fold stoichiometric excess of NMM if the amine B-3 was a salt, was added to the unique contents of each vessel. The parallel reaction block was then agitated vertically on an orbital shaker for 2-3 h at ambient temperature. An excess of the amine-functionalized resin R-1 and aldehyde resin R-3, along with dichloromethane solvent were added to each reaction vessel. The resin-charged reaction block was shaken vertically for 2 h on an orbital shaker at ambient temperature. The amine-containing resin R-1 sequestered B-2 and any remaining D-i as their resin-bound adducts, B-4 and D-2, respectively. The aldehyde-containing resin R-3 sequestered any unreacted B-3 as its resin-bound adduct R-5. Filtration of the insoluble resins and resin adducts R-1, R-2, R-3, R-4, R-5, B-4, and D-2 and subsequent rinsing of the vessel resin-bed with dichloromethane/dimethylformamide afforded filtrates containing the purified products E-i. Concentration of the filtrates afforded the purified products E-i, which were weighed and analyzed by LC/MS.

For those amines B-3 which contain a protecting group, a final deprotection step was required after the coupling reaction (Scheme 8). The residues E-i were dissolved in methanol, Pd/C was added, and the reaction mixtures were stirred under 10 psi of Ho for 16-20 h. The mixtures were filtered through Celite, rinsed with methanol and concentrated to afford pure products Z-i, which were weighed and analyzed by LC/MS. If necessary, the products were purified by reverse-phase HPLC. Conversely, the deprotection step was done, as needed, in the presence of ammonium formate (5 fold stoichiometric excess) in place of the 10 psi of H₂.

A third method of deprotection uses TMSI generated in situ. The residues E-i were dissolved in acetonitrile. Sodium iodide and TMSCl (5 fold stoichiometric excess of each) were added, and the reaction mixtures were agitated vertically at 55° C. for 14-20 h. Methanol and (N,N-dimethyl)aminomethylpolystyrene resin were added to each vessel, and the mixtures were agitated for another 3 h. The mixtures were filtered through Celite, rinsed with acetonitrile and concentrated to afford products Z-i, which were weighed and analyzed by LC/MS. If necessary, the products were purified by reverse-phase HPLC.

Although Schemes 5, 6, 7, and 8 describe the use of parallel array chemical library technology to prepare compounds of general formulae D-i, E-i and Z-i, it is noted that one with ordinary skill in the art of classical synthetic organic chemistry would be able to prepare D-i, E-i, and Z-i by conventional means (one compound prepared at a time in conventional Glassware and purified by conventional means such as chromatography and/or crystallization).

The various functionalized resins utilized to prepare and purify parallel reaction mixtures, their source commercially or in the scientific literature, and the three representations (ie. the R number, an abbreviated functional structure, and the actual structural unit bound to the resin for each) are summarized below as follows:

The specific compounds prepared, by using the General Robotics and Experimental Procedure, Schemes 5 through 8, and general synthetic methods and processes disclosed herein, are listed below in Tables 4 through Table 7. Tables 4 through Table 7 further summarize the mass spectral characterization data that confirmed the indicated structure for each compound of the present invention disclosed in these tables.

TABLE 4
Structures of Pyrazinones Prepared by General Robotic and
Experimental Procedures
General Structure
Ex					MW
No.	R2	B—A—	YO	R1	(m/z + 1)
73	5-amino-2-	isopropyl	4-amidino-2-	Cl	504
	fluorophenyl		fluorobenzyl
74	2-chloro-5-py-	isopropyl	4-amidino-2-	Cl	506
	ridyl		fluorobenzyl
75	3-pyridyl	isopropyl	4-amidinoben-	Cl	454
			zyl
76	5-amino-2-	isopropyl	4-amidino-	Cl	515
	methylthiophe-		benzyl
	nyl
77	3-nitrophenyl	2-phenylethyl	4-amidino-	Cl	560.2
			benzyl
78	2-methylphenyl	2-phenylethyl	4-amidino-	Cl	529.4
			benzyl
79	4-methylphenyl	2-phenylethyl	4-amidino-	Cl	529.3
			benzyl
80	1-naphthyl	2-phenylethyl	4-amidino-	Cl	565.3
			benzyl
81	3-methylphenyl	2-phenylethyl	4-amidino-	Cl	529.5
			benzyl
82	2-naphthyl	2-phenylethyl	4-amidino-	Cl	564.9
			benzyl
83	3-methylphenyl	2-phenylethyl	4-amidino-	H	495.8
			benzyl
84	3-methylphenyl	2-phenylethyl	4-amidino-	H	495.5
			benzyl
85	3-methylphenyl	2-phenylethyl	4-amidino-	H	495.4
			benzyl
86	3-aminophenyl	2-phenylethyl	4-amidino-	Cl	530.3
			benzyl
87	3-aminophenyl	2-(3-chloro	4-amidino-	Cl	563.9
		phenyl)ethyl	benzyl
88	3-aminophenyl	benzyl	4-amidino-	Cl	516.2
			benzyl
89	3-aminophenyl	cyclobutyl	2-phenylethyl	Cl	452.3
90	3-aminophenyl	cyclobutyl	4-amidino-	Cl	480.5
			benzyl
91	3-aminophenyl	benzyl	5-guanidino-	Cl	608.4
			1-oxo-1-
			(2-thiazolyl)-
			2-pentyl
92	3-aminophenyl	cyclobutyl	4-amidino-	H	446.2
			benzyl
93	3-aminophenyl	t-butyl	4-amidino-	Cl	482
			benzyl
94	3-aminophenyl	N,N-dimethyl	4-amidino-	Cl	469.2
		amino	benzyl
95	3-(N-	2-phenylethyl	4-amidino-	Cl	543.9
	methylamino)		benzyl
	phenyl
96	3-(N-	isopropyl	4-amidino-	Cl	481.6
	methylamino)		benzyl
	phenyl
97	2-methyl-3-	isopropyl	4-amidino-	Cl	482.2
	aminophenyl		benzyl
98	2-methyl-3-	isopropyl	4-amidino-	H	448.8
	aminophenyl		benzyl
99	3-aminophenyl	cyclobutyl	benzyl	Cl	438.4

TABLE 5
Structures of Pyrazinones Prepared by General Robotic and Experimental
Procedures
General Structure
Ex.
No.	R2	B—A—	YO	MW (m/z + 1)
E-0001	methyl	benzyl	2-(4-pyridyl)ethyl	412
E-0002	methyl	2-phenylethyl	2-(4-pyridyl)ethyl	426
E-0003	methyl	2-(3-chlorophenyl)-	2-(4-pyridyl)ethyl	460
		ethyl
E-0004	methyl	2-(4-chlorophenyl)-	2-(4-pyridyl)ethyl	460
		ethyl
E-0005	methyl	2-(3-pyridyl)ethyl	2-(4-pyridyl)ethyl	427
E-0006	methyl	2-(4-pyridyl)ethyl	2-(4-pyridyl)ethyl	427
E-0007	methyl	2-(4-	2-(4-pyridyl)ethyl	435
		morpholinyl)ethyl
E-0008	methyl	4-pyridylmethyl	2-(4-pyridyl)ethyl	413
E-0009	phenyl	benzyl	2-(4-pyridyl)ethyl	474
E-0010	phenyl	2-phenylethyl	2-(4-pyridyl)ethyl	488
E-0011	phenyl	2-(3-chlorophenyl)-	2-(4-pyridyl)ethyl	522
		ethyl
E-0012	phenyl	2-(4-chlorophenyl)-	2-(4-pyridyl)ethyl	522
		ethyl
E-0013	phenyl	2-(3-pyridyl)ethyl	2-(4-pyridyl)ethyl	489
E-0014	phenyl	2-(4-pyridyl)ethyl	2-(4-pyridyl)ethyl	489
E-0015	phenyl	2-(4-morpholinyl)-	2-(4-pyridyl)ethyl	497
		ethyl
E-0016	phenyl	4-pyridylmethyl	2-(4-pyridyl)ethyl	475
E-0017	4-chlorophenyl	benzyl	2-(4-pyridyl)ethyl	508
E-0018	4-chlorophenyl	2-phenylethyl	2-(4-pyridyl)ethyl	522
E-0019	4-chlorophenyl	2-(3-chlorophenyl)-	2-(4-pyridyl)ethyl	557
		ethyl
E-0020	4-chlorophenyl	2-chlorophenyl)-	2-(4-pyridyl)ethyl	557
		ethyl
E-0021	4-chlorophenyl	2-(3-pyridyl)ethyl	2-(4-pyridyl)ethyl	523
E-0022	4-chlorophenyl	2-(4-pyridyl)ethyl	2-(4-pyridyl)ethyl	523
E-0023	4-chlorophenyl	2-(4-	2-(4-pyridyl)ethyl	531
		morpholinyl)ethyl
E-0024	4-chlorophenyl	4-pyridylmethyl	2-(4-pyridyl)ethyl	509
E-0025	4-chlorophenyl	benzyl	2-(4-pyridyl)ethyl	508
E-0026	4-chlorophenyl	2-phenylethyl	2-(4-pyridyl)ethyl	522
E-0027	4-chlorophenyl	2-(3-chlorophenyl)-	2-(4-pyridyl)ethyl	557
		ethyl
E-0028	4-chlorophenyl	2-(4-chlorophenyl)-	2-(4-pyridyl)ethyl	557
		ethyl
E-0029	4-chlorophenyl	2-(3-pyridyl)ethyl	2-(4-pyridyl)ethyl	523
E-0030	4-chlorophenyl	2-(4-pyridyl)ethyl	2-(4-pyridyl)ethyl	523
E-0031	4-chlorophenyl	2-(4-	2-(4-pyridyl)ethyl	531
		morpholinyl)ethyl
E-0032	4-chlorophenyl	4-pyridylmethyl	2-(4-pyridyl)ethyl	509
E-0033	4-	benzyl	2-(4-pyridyl)ethyl	504
	methoxyphenyl
E-0034	4-	2-phenylethyl	2-(4-pyridyl)ethyl	518
	methoxyphenyl
E-0035	4-	2-(3-chlorophenyl)-	2-(4-pyridyl)ethyl	552
	methoxyphenyl	ethyl
E-0036	4-	2-(4-chlorophenyl)-	2-(4-pyridyl)ethyl	552
	methoxyphenyl	ethyl
E-0037	4-	2-(3-pyridyl)ethyl	2-(4-pyridyl)ethyl	519
	methoxyphenyl
E-0038	4-	2-(4-pyridyl)ethyl	2-(4-pyridyl)ethyl	519
	methoxyphenyl
E-0039	4-	2-(4-	2-(4-pyridyl)ethyl	527
	methoxyphenyl	morpholinyl)ethyl
E-0040	4-	4-pyridylmethyl	2-(4-pyridyl)ethyl	505
	methoxyphenyl
E-0041	3,4-methylene-	benzyl	2-(4-pyridyl)ethyl	518
	dioxyphenyl
E-0042	3,4-methylene-	2-phenylethyl	2-(4-pyridyl)ethyl	532
	dioxyphenyl
E-0043	3,4-methylene-	2-(3-chlorophenyl)-	2-(4-pyridyl)ethyl	566
	dioxyphenyl	ethyl
E-0044	3,4-methylene-	2-(4-chlorophenyl)-	2-(4-pyridyl)ethyl	566
	dioxyphenyl	ethyl
E-0045	3,4-methylene-	2-(3-pyridyl)ethyl	2-(4-pyridyl)ethyl	533
	dioxyphenyl
E-0046	3,4-methylene-	2-(4-pyridyl)ethyl	2-(4-pyridyl)ethyl	533
	dioxyphenyl
E-0047	3,4-methylene-	2-(4-	2-(4-pyridyl)ethyl	541
	dioxyphenyl	morpholinyl)ethyl
E-0048	3,4-methylene-	4-pyridylmethyl	2-(4-pyridyl)ethyl	519
	dioxyphenyl
E-0049	4-biphenyl	benzyl	2-(4-pyridyl)ethyl	550
E-0050	4-biphenyl	2-phenylethyl	2-(4-pyridyl)ethyl	564
E-0051	4-biphenyl	2-(3-chlorophenyl)-	2-(4-pyridyl)ethyl	599
		ethyl
E-0052	4-biphenyl	2-(4-chlorophenyl)-	2-(4-pyridyl)ethyl	599
		ethyl
E-0053	4-biphenyl	2-(3-pyridyl)ethyl	2-(4-pyridyl)ethyl	565
E-0054	4-biphenyl	2-(4-pyridyl)ethyl	2-(4-pyridyl)ethyl	565
E-0055	4-biphenyl	2-(4-	2-(4-pyridyl)ethyl	573
		morpholinyl)ethyl
E-0056	4-biphenyl	4-pyridylmethyl	2-(4-pyridyl)ethyl	551
E-0057	benzyl	benzyl	2-(4-pyridyl)ethyl	488
E-0058	benzyl	2-phenylethyl	2-(4-pyridyl)ethyl	502
E-0059	benzyl	2-(3-chlorophenyl)-	2-(4-pyridyl)ethyl	536
		ethyl
E-0060	benzyl	2-(4-chlorophenyl)-	2-(4-pyridyl)ethyl	536
		ethyl
E-0061	benzyl	2-(3-pyridyl)ethyl	2-(4-pyridyl)ethyl	503
E-0062	benzyl	2-(4-pyridyl)ethyl	2-(4-pyridyl)ethyl	503
E-0063	benzyl	2-(4-	2-(4-pyridyl)ethyl	511
		morpholinyl)ethyl
E-0064	benzyl	4-pyridylmethyl	2-(4-pyridyl)ethyl	489
E-0065	2-phenylethyl	benzyl	2-(4-pyridyl)ethyl	502
E-0066	2-phenylethyl	2-phenylethyl	2-(4-pyridyl)ethyl	516
E-0067	2-phenylethyl	2-(3-chlorophenyl)-	2-(4-pyridyl)ethyl	550
		ethyl
E-0068	2-phenylethyl	2-(4-chlorophenyl)-	2-(4-pyridyl)ethyl	550
		ethyl
E-0069	2-phenylethyl	2-(3-pyridyl)ethyl	2-(4-pyridyl)ethyl	517
E-0070	2-phenylethyl	2-(4-pyridyl)ethyl	2-(4-pyridyl)ethyl	517
E-0071	2-phenylethyl	2-(4-	2-(4-pyridyl)ethyl	525
		morpholinyl)ethyl
E-0072	2-phenylethyl	4-pyridylmethyl	2-(4-pyridyl)ethyl	503
E-0073	3-chlorophenyl	benzyl	2-(4-pyridyl)ethyl	508
E-0074	3-chlorophenyl	benzyl	2-(3-pyridyl)ethyl	508
E-0075	3-chlorophenyl	benzyl	4-	573
			piperidinylmethyl
E-0076	3-chlorophenyl	2-phenylethyl	2-(4-pyridyl)ethyl	522
E-0077	3-chlorophenyl	2-phenylethyl	2-(3-pyridyl)ethyl	522
E-0078	3-chlorophenyl	2-phenylethyl	4-	587
			piperidinylmethyl
E-0079	3-chlorophenyl	2-(3-chlorophenyl)-	2-(4-pyridyl)ethyl	557
		ethyl
E-0080	3-chlorophenyl	2-(3-chlorophenyl)-	2-(3-pyridyl)ethyl	557
		ethyl
E-0081	3-chlorophenyl	2-(3-chlorophenyl)-	4-	622
		ethyl	piperidinylmethyl
E-0082	3-chlorophenyl	2-(4-chlorophenyl)-	2-(4-pyridyl)ethyl	557
		ethyl
E-0083	3-chlorophenyl	2-(4-chlorophenyl)-	2-(3-pyridyl)ethyl	557
		ethyl
E-0084	3-chlorophenyl	2-(4-chlorophenyl)-	4-	622
		ethyl	piperidinylmethyl
E-0085	3-chlorophenyl	benzyl	2-(4-pyridyl)ethyl	508
E-0086	3-chlorophenyl	benzyl	2-(3-pyridyl)ethyl	508
E-0087	3-chlorophenyl	benzyl	4-	573
			piperidinylmethyl
E-0088	3-chlorophenyl	2-phenylethyl	2-(4-pyridyl)ethyl	522
E-0089	3-chlorophenyl	2-phenylethyl	2-(3-pyridyl)ehyl	522
E-0090	3-chlorophenyl	2-phenylethyl	4-	587
			piperidinylmethyl
E-0091	3-chlorophenyl	2-(3-chlorophenyl)-	2-(4-pyridyl)ethyl	557
		ethyl
E-0092	3-chlorophenyl	2-(3-chlorophenyl)-	2-(3-pyridyl)ethyl	557
		ethyl
E-0093	3-chlorophenyl	2-(3-chlorophenyl)-	4-	622
		ethyl	piperidinylmethyl
E-0094	3-chlorophenyl	2-(4-chlorophenyl)-	2-(4-pyridyl)ethyl	557
		ethyl
E-0095	3-chlorophenyl	2-(4-chlorophenyl)-	2-(3-pyridyl)ethyl	557
		ethyl
E-0096	3-chlorophenyl	2-(4-chlorophenyl)-	4-	622
		ethyl	piperidinylmethyl
E-0097	4-	benzyl	2-(4-pyridyl)ethyl	504
	methoxyphenyl
E-0098	4-	benzyl	2-(3-pyridyl)ethyl	504
	methoxyphenyl
E-0099	4-	benzyl	4-	569
	methoxyphenyl		piperidinylmethyl
E-0100	4-	2-phenylethyl	2-(4-pyridyl)ethyl	518
	methoxyphenyl
E-0101	4-	2-phenylethyl	2-(3-pyridyl)ethyl	518
	methoxyphenyl
E-0102	4-	2-phenylethyl	4-	583
	methoxyphenyl		piperidinylmethyl
E-0103	4-	2-(3-	2-(4-pyridyl)ethyl	552
	methoxyphenyl	chlorophenyl)ethyl
E-0104	4-	2-(3-	2-(3-pyridyl)ethyl	552
	methoxyphenyl	chlorophenyl)ethyl
E-0105	4-	2-(3-	4-	617
	methoxyphenyl	chlorophenyl)ethyl	piperidinylmethyl
E-0106	4-	2-(4-	2-(4-pyridyl)ethyl	552
	methoxyphenyl	chlorophenyl)ethyl
E-0107	4-	2-(4-	2-(3-pyridyl)ethyl	552
	methoxyphenyl	chlorophenyl)ethyl
E-0108	4-	2-(4-	4-	617
	methoxyphenyl	chlorophenyl)ethyl	piperidinylmethyl
E-0109	4-biphenyl	benzyl	2-(4-pyridyl)ethyl	550
E-0110	4-biphenyl	benzyl	2-(3-pyridyl)ethyl	550
E-0111	4-biphenyl	benzyl	4-	615
			piperidinylmethyl
E-0112	4-biphenyl	2-phenylethyl	2-(4-pyridyl)ethyl	564
E-0113	4-biphenyl	2-phenylethyl	2-(3-pyridyl)ethyl	564
E-0114	4-biphenyl	2-phenylethyl	4-	629
			piperidinylmethyl
E-0115	4-biphenyl	2-(3-	2-(4-pyridyl)ethyl	599
		chlorophenyl)ethyl
E-0116	4-biphenyl	2-(3-	2-(3-pyridyl)ethyl	599
		chlorophenyl)ethyl
E-0117	4-biphenyl	2-(3-	4-	663
		chlorophenyl)ethyl	piperidinylmethyl
E-0118	4-biphenyl	2-(4-	2-(4-pyridyl)ethyl	599
		chlorophenyl)ethyl
E-0119	4-biphenyl	2-(4-	2-(3-pyridyl)ethyl	599
		chlorophenyl)ethyl
E-0120	4-biphenyl	2-(1-	4-	663
		chlorophenyl)ethyl	piperidinylmethyl
E-0121	methyl	benzyl	4-	477
			piperidinylmethyl
E-0122	methyl	2-phenylethyl	4-	491
			piperidinylmethyl
E-0123	methyl	2-(3-	4-	525
		chlorophenyl)ethyl	piperidinylmethyl
E-0124	methyl	2-(4-	4-	525
		chlorophenyl)ethyl	piperidinylmethyl
E-0125	methyl	2-(3-pyridyl)ethyl	4-	528
			piperidinylmethyl
E-0126	methyl	2-(4-pyridyl)ethyl	4-	528
			piperidinylmethyl
E-0127	methyl	2-(4-	4-	536
		morpholinyl)ethyl	piperidinylmethyl
E-0128	methyl	2-(1-	4-	531
		methylimidazol-4-	piperidinylmethyl
		yl)ethyl
E-0129	methyl	2-(1-	4-	531
		methylimidazol-5-	piperidinylmethyl
		yl)ethyl
E-0130	methyl	4-pyridylmethyl	4-	514
			piperidinylmethyl
E-0131	phenyl	benzyl	4-	539
			piperidinylmethyl
E-0132	phenyl	2-phenylethyl	4-	553
			piperidinylmethyl
E-0133	phenyl	2-(3-	4-	587
		chlorophenyl)ethyl	piperidinylmethyl
E-0134	phenyl	2-(4-	4-	587
		chlorophenyl)ethyl	piperidinylmethyl
E-0135	phenyl	2-(3-pyridyl)ethyl	4-	590
			piperidinylmethyl
E-0136	phenyl	2-(4-pyridyl)ethyl	4-	590
			piperidinylmethyl
E-0137	phenyl	2-(4-	4-	598
		morpholinyl)ethyl	piperidinylmethyl
E-0138	phenyl	2-(1-	4-	593
		methylimidazol	4-piperidinylmethyl
		yl)ethyl
E-0139	phenyl	2-(1-	4-	593
		methylimidazol-5-	piperidinylmethyl
		yl)ethyl
E-0140	phenyl	4-pyridylmethyl	4-	576
			piperidinylmethyl
E-0141	4-chlorophenyl	benzyl	4-	573
			piperidinylmethyl
E-0142	4-chlorophenyl	2-phenylethyl	4-	587
			piperidinylmethyl
E-0143	4-chlorophenyl	2-(3-	4-	622
		chlorophenyl)ethyl	piperidinylmethyl
E-0144	4-chlorophenyl	2-(4-	4-	622
		chlorophenyl)ethyl	piperidinylmethyl
E-0145	4-chlorophenyl	2-(3-pyridyl)ethyl	4-	625
			piperidinylmethyl
E-0146	4-chlorophenyl	2-(4-pyridyl)ethyl	4-	625
			piperidinylmethyl
E-0147	4-chlorophenyl	2-(4-	4-	633
		morpholinyl)ethyl	piperidinylmethyl
E-0148	4-chlorophenyl	2-(1-	4-	628
		methylimidazol-4-	piperidinylmethyl
		yl)ethyl
E-0149	4-chlorophenyl	2-(1-	4-	628
		methylimidazol-5-	piperidinylmethyl
		yl)ethyl
E-0150	4-chlorophenyl	4-pyridylmethyl	4-	611
			piperidinylmethyl
E-0151	4-chlorophenyl	benzyl	4-	573
			piperidinylmethyl
E-0152	4-chlorophenyl	2-phenylethyl	4-	587
			piperidinylmethyl
E-0153	4-chlorophenyl	2-(3-	4-	622
		chlorophenyl)ethyl	piperidinylmethyl
E-0154	4-chlorophenyl	2-(4-	4-	622
		chlorophenyl)ethyl	piperidinylmethyl
E-0155	4-chlorophenyl	2-(3-pyridyl)ethyl	4-	625
			piperidinylmethyl
E-0156	4-chlorophenyl	2-(4-pyridyl)ethyl	4-	625
			piperidinylmethyl
E-0157	4-chlorophenyl	2-(4-	4-	633
		morpholinyl)ethyl	piperidinylmethyl
E-0158	4-chlorophenyl	2-(1-	4-	628
		methylimidazol-4-	piperidinylmethyl
		yl)ethyl
E-0159	4-chlorophenyl	2-(1-	4-	628
		methylimidazol-5-	piperidinylmethyl
		yl)ethyl
E-0160	4-chlorophenyl	4-pyridylmethyl	4-	611
			piperidinylmethyl
E-0161	4-	benzyl	4-	569
	methoxyphenyl		piperidinylmethyl
E-0162	4-	2-phenylethyl	4-	583
	methoxyphenyl		piperidinylmethyl
E-0163	4-	2-(3-	4-	617
	methoxyphenyl	chlorophenyl)ethyl	piperidinylmethyl
E-0164	4-	2-(4-	4-	617
	methoxyphenyl	chlorophenyl)ethyl	piperidinylmethyl
E-0165	4-	2-(3-pyridyl)ethyl	4-	620
	methoxyphenyl		piperidinylmethyl
E-0166	4-	2-(4-pyridyl)ethyl	4-	620
	methoxyphenyl		piperidinylmethyl
E-0167	4-	2-(4-	4-	628
	methoxyphenyl	morpholinyl)ethyl	piperidinylmethyl
E-0168	4-	2-(1-	4-	623
	methoxyphenyl	methylimidazol-4-	piperidinylmethyl
		yl)ethyl
E-0169	4-	2-(1-	4-	623
	methoxyphenyl	methylimidazol-5-	piperidinylmethyl
		yl)ethyl
E-0170	4-	4-pyridylmethyl	4-	606
	methoxyphenyl		piperidinylmethyl
E-0171	3,4-methylene-	benzyl	4-	583
	dioxyphenyl		piperidinylmethyl
E-0172	3,4-methylene-	2-phenylethyl	4-	597
	dioxyphenyl		piperidinylmethyl
E-0173	3,4-methylene-	2-(3-	4-	631
	dioxyphenyl	chlorophenyl)ethyl	piperidinylmethyl
E-0174	3,4-methylene-	2-(4-	4-	631
	dioxyphenyl	chlorophenyl)ethyl	piperidinylmethyl
E-0175	3,4-methylene-	2-(3-pyridyl)ethyl	4-	634
	dioxyphenyl		piperidinylmethyl
E-0176	3,4-methylene-	2-(4-pyridyl)ethyl	4-	634
	dioxyphenyl		piperidinylmethyl
E-0177	3,4-methylene-	2-(4-	4-	642
	dioxyphenyl	morpholinyl)ethyl	piperidinylmethyl
E-0178	3,4-methylene-	2-(1-	4-	637
	dioxyphenyl	methylimidazol-4-	piperidinylmethyl
		yl)ethyl
E-0179	3,4-methylene-	2-(1-	4-	637
	dioxyphenyl	methylimidazol-5-	piperidinylmethyl
		yl)ethyl
E-0180	3,4-methylene-	4-pyridylmethyl	4-	620
	dioxyphenyl		piperidinylmethyl
E-0181	4-biphenyl	benzyl	4-	615
			piperidinylmethyl
E-0182	4-biphenyl	2-phenylethyl	4-	629
			piperidinylmethyl
E-0183	4-biphenyl	2-(3-	4-	663
		chlorophenyl)ethyl	piperidinylmethyl
E-0184	4-biphenyl	2-(4-	4-	663
		chlorophenyl)ethyl	piperidinylmethyl
E-0185	4-biphenyl	2-(3-pyridyl)ethyl	4-	666
			piperidinylmethyl
E-0186	4-biphenyl	2-(4-pyridyl)ethyl	4-	666
			piperidinylmethyl
E-0187	4-biphenyl	2-(4-	4-	675
		morpholinyl)ethyl	piperidinylmethyl
E-0188	4-biphenyl	2-(1-	4-	669
		methylimidazol-4-	piperidinylmethyl
		yl)ethyl
E-0189	4-biphenyl	2-(1-	4-	669
		methylimidazol-5-	piperidinylmethyl
		yl)ethyl
E-0190	4-biphenyl	4-pyridylmethyl	4-	652
			piperidinylmethyl
E-0191	benzyl	benzyl	4-	553
			piperidinylmethyl
E-0192	benzyl	2-phenylethyl	4-	567
			piperidinylmethyl
E-0193	benzyl	2-(3-	4-	601
		chlorophenyl)ethyl	piperidinylmethyl
E-0194	benzyl	2-(4-	4-	601
		chlorophenyl)ethyl	piperidinylmethyl
E-0195	benzyl	2-(3-pyridyl)ethyl	4-	604
			piperidinylmethyl
E-0196	benzyl	2-(4-pyridyl)ethyl	4-	604
			piperidinylmethyl
E-0197	benzyl	2-(4-	4-	612
		morpholinyl)ethyl	piperidinylmethyl
E-0198	benzyl	2-(1-	4-	607
		methylimidazol-4-	piperidinylmethyl
		y)ethyl
E-0199	benzyl	2-(1-	4-	607
		methylimidazol-5-	piperidinylmethyl
		yl)ethyl
E-0200	benzyl	4-pyridylmethyl	4-	590
			piperidinylmethyl
E-0201	2-phenylethyl	benzyl	4-	567
			piperidinylmethyl
E-0202	2-phenylethyl	2-phenylethyl	4-	581
			piperidinylmethyl
E-0203	2-phenylethyl	2-(3-	4-	615
		chlorophenyl)ethyl	piperidinylmethyl
E-0204	2-phenylethyl	2-(4-	4-	615
		chlorophenyl)ethyl	piperidinylmethyl
E-0205	2-phenylethyl	2-(3-pyridyl)ethyl	4-	618
			piperidinylmethyl
E-0206	2-phenylethyl	2-(4-pyridyl)ethyl	4-	618
			piperidinylmethyl
E-0207	2-phenylethyl	2-(4-	4-	626
		morpholinyl)ethyl	piperidinylmethyl
E-0208	2-phenylethyl	2-(1-	4-	621
		methylimidazol-4-	piperidinylmethyl
		yl)ethyl
E-0209	2-phenylethyl	2-(1-	4-	621
		methylimidazol-5-	piperidinylmethyl
		yl)ethyl
E-0210	2-phenylethyl	4-pyridylmethyl	4-	604
			piperidinylmethyl

TABLE 6
Structures of Pyrazinones Prepared by General Robotic and Experimental
Procedures
General Structure
Ex.				MW
No.	R2	B—A—	YO	(m/z + 1)
1471-1	methyl	benzyl	4-amidinobenzyl	439
1471-2	methyl	2-(4-chlorophenyl)-	4-amidinobenzyl	488
		ethyl
1471-3	methyl	4-pyridylmethyl	4-amidinobenzyl	440
1471-4	methyl	2-(4-morpholinyl)-	4-amidinobenzyl	462
		ethyl
1471-5	methyl	2-(4-pyridyl)ethyl	4-amidinobenzyl	454
1471-6	methyl	2-(3-chlorophenyl)-	4-amidinobenzyl	488
		ethyl
1471-7	methyl	2-phenylethyl	4-amidinobenzyl	453
1471-8	methyl	2-(3-pyridyl)ethyl	4-amidinobenzyl	454
1471-9	phenyl	benzyl	4-amidinobenzyl	501
1471-	phenyl	2-(4-chlorophenyl)-	4-amidinobenzyl	550
10		ethyl
1471-	phenyl	4-pyridylmethyl	4-amidinobenzyl	502
11
1471-	phenyl	2-(4-morpholinyl)-	4-amidinobenzyl	525
12		ethyl
1471-	phenyl	2-(4-pyridyl)ethyl	4-amidinobenzyl	517
13
1471-	phenyl	2-(3-chlorophenyl)-	4-amidinobenzyl	550
14		ethyl
1471-	phenyl	2-phenylethyl	4-amidinobenzyl	516
15
1471-	phenyl	2-(3-pyridyl)ethyl	4-amidinobenzyl	517
16
1471-	4-Cl-phenyl	benzyl	4-amidinobenzyl	536
17
1471-	4-Cl-phenyl	2-(4-chlorophenyl)-	4-amidinobenzyl	584
18		ethyl
1471-	4-Cl-phenyl	4-pyridylmethyl	4-amidinobenzyl	537
19
1471-	4-Cl-phenyl	2-(4-morpholinyl)-	4-amidinobenzyl	559
20		ethyl
1471-	4-Cl-phenyl	2-(4-pyridyl)ethyl	4-amidinobenzyl	551
21
1471-	4-Cl-phenyl	2-(3-chlorophenyl)-	4-amidinobenzyl	584
22		ethyl
1471-	4-Cl-phenyl	2-phenylethyl	4-amidinobenzyl	550
23
1471-	4-Cl-phenyl	2-(3-pyridyl)ethyl	4-amidinobenzyl	551
24
1471-	3-Cl-phenyl	benzyl	4-amidinobenzyl	536
25
1471-	3-Cl-phenyl	2-(4-chlorophenyl)-	4-amidinobenzyl	584
26		ethyl
1471-	3-Cl-phenyl	4-pyridylmethyl	4-amidinobenzyl	537
27
1471-	3-Cl-phenyl	2-(4-morpholinyl)-	4-amidinobenzyl	559
28		ethyl
1471-	3-Cl-phenyl	2-(4-pyridyl)ehyl	4-amidinobenzyl	551
29
1471-	3-Cl-phenyl	2-(3-chlorophenyl)-	4-amidinobenzyl	584
30
1471-	3-Cl-phenyl	2-phenylethyl	4-amidinobenzyl	550
31
1471-	3-Cl-phenyl	2-(3-pyridyl)ethyl	4-amidinobenzyl	551
32
1471-	4-methoxyphenyl	benzyl	4-amidinobenzyl	532
33
1471-	4-methoxyphenyl	2-(4-chlorophenyl)-	4-amidinobenzyl	580
34		ethyl
1471-	4-methoxyphenyl	4-pyridylmethyl	4-amidinobenzyl	533
35
1471-	4-methoxyphenyl	2-(4-morpholinyl)-	4-amidinobenzyl	555
36		ethyl
1471-	4-methoxyphenyl	2-(4-pyridyl)ethyl	4-amidinobenzyl	547
37
1471-	4-methoxyphenyl	2-(3-chlorophenyl)-	4-amidinobenzyl	580
38		ethyl
1471-	4-methoxyphenyl	2-phenylethyl	4-amidinobenzyl	546
39
1471-	4-methoxyphenyl	2-(3-pyridyl)ethyl	4-amidinobenzyl	547
40
1471-	3,4-methylene-	benzyl	4-amidinobenzyl	545
41	dioxyphenyl
1471-	3,4-methylene-	2-(4-chlorophenyl)-	4-amidinobenzyl	594
42	dioxyphenyl	ethyl
1471-	3,4-methylene-	4-pyridylmethyl	4-amidinobenzyl	546
43	dioxyphenyl
1471-	3,4-methylene-	2-(4-morpholinyl)-	4-amidinobenzyl	569
44	dioxyphenyl	ethyl
1471-	3,4-methylene-	2-(4-pyridyl)ethyl	4-amidinobenzyl	561
45	dioxyphenyl
1471-	3,4-methylene-	2-(3-chlorophenyl)-	4-amidinobenzyl	594
46	dioxyphenyl	ethyl
1471-	3,4-methylene-	2-phenylethyl	4-amidinobenzyl	560
47	dioxyphenyl
1471-	3,4-methylene-	2-(3-pyridyl)ethyl	4-amidinobenzyl	561
48	dioxyphenyl
1471-	ethyl	benzyl	4-amidinobenzyl	553
57
1471-	ethyl	2-(4-chlorophenyl)-	4-amidinobenzyl	502
58		ethyl
1471-	ethyl	4-pyridylmethyl	4-amidinobenzyl	454
59
1471-	ethyl	2-(4-morpholinyl)-	4-amidinobenzyl	476
60		ethyl
1471-	ethyl	2-(4-pyridyl)ethyl	4-amidinobenzyl	468
61
1471-	ethyl	2-(3-chlorophenyl)-	4-amidinobenzyl	502
62		ethyl
1471-	ethyl	2-phenylethyl	4-amidinobenzyl	467
63
1471-	ethyl	2-(3-pyridyl)ethyl	4-amidinobenzyl	468
64
1471-	4-biphenyl	4-pyridylmethyl	4-amidinobenzyl	579
67
1471-	4-biphenyl	2-(3-chlorophenyl)-	4-amidinobenzyl	626
70		ethyl
1471-	4-biphenyl	2-phenylethyl	4-amidinobenzyl	592
71
1471-	4-biphenyl	2-(3-pyridyl)ethyl	4-amidinobenzyl	593
72
1507-	phenyl	3-trifluoromethyl-	4-amidinobenzyl	569
01		benzyl
1507-	phenyl	1-indanyl	4-amidinobenzyl	528
02
1507-	phenyl	2-Cl-benzyl	4-amidinobenzyl	536
03
1507-	phenyl	4-trifluoromethoxy	4-amidinobenzyl	585
04		benzyl
1507-	phenyl	3-(1-imidazolyl)-	4-amidinobenzyl	520
05		propyl
1507-	phenyl	2-(4-bromophenyl)-	4-amidinobenzyl	594
06		ethyl
1507-	phenyl	1,2-(diphenyl)ethyl	4-amidinobenzyl	592
07
1507-	phenyl	2-indanyl	4-amidinobenzyl	528
08
1507-	phenyl	2,2-(diphenyl)ethyl	4-amidinobenzyl	592
09
1507-	phenyl	3,3-(diphenyl)propyl	4-amidinobenzyl	606
10
1507-	phenyl	2-(4-methoxyphenyl)	4-amidinobenzyl	546
11		ethyl
1507-	phenyl	2-(3-methoxyphenyl)	4-amidinobenzyl	546
12		ethyl
1507-	phenyl	4-methoxybenzyl	4-amidinobenzyl	532
13
1507-	phenyl	2-trifluoromethyl-	4-amidinobenzyl	569
15		benzyl
1507-	phenyl	1,2,3,4-tetrahydro-1-	4-amidinobenzyl	542
16		naphthyl
1507-	phenyl	2-(cyclohex-1-	4-amidinobenzyl	520
17		enyl)ethyl
1507-	phenyl	2-(2-thienyl)ethyl	4-amidinobenzyl	522
18
1507-	phenyl	3-[1-(pyrrolidinyl-2-	4-amidinobenzyl	537
19		one)]propyl
1507-	phenyl	1-carboethoxy-	4-amidinobenzyl	567
20		piperidin-4-yl
1507-	phenyl	cyclobutyl	4-amidinobenzyl	465
21
1507-	phenyl	2,4-dichlorobenzyl	4-amidinobenzyl	570
22
1507-	phenyl	2-(3-chlorophenyl)	4-amidinobenzyl	516
23		ethyl
1507-	phenyl	2-pyridylmethyl	4-amidinobenzyl	502
24
1507-	phenyl	cyclopentyl	4-amidinobenzyl	479
25
1507-	phenyl	2,4-difluorobenzyl	4-amidinobenzyl	537
26
1507-	phenyl	1-naphthylmethyl	4-amidinobenzyl	552
28
1507-	phenyl	cyclohepyl	4-amidinobenzyl	508
29
1507-	phenyl	4-bromobenzyl	4-amidinobenzyl	580
30
1507-	phenyl	cyclopropyl	4-amidinobenzyl	451
31
1507-	phenyl	2-methylpropyl	4-amidinobenzyl	467
32
1507-	phenyl	2-methoxyethyl	4-amidinobenzyl	469
33
1507-	phenyl	(S)-α-methylbenzyl	4-amidinobenzyl	516
34
1507-	phenyl	1,1-diphenylmethyl	4-amidinobenzyl	578
35
1507-	phenyl	3-(2,3,4,5-tetrahydro-	4-amidinobenzyl	530
36		1,1-dioxothiophenyl)
1507-	phenyl	3-chlorobenzyl	4-amidinobenzyl	536
38
1507-	phenyl	3,5-bis-	4-amidinobenzyl	637
40		trifluoromethylbenzyl
1507-	phenyl	2,2,2-trifluoroethyl	4-amidinobenzyl	493
41
1507-	phenyl	3-fluorobenzyl	4-amidinobenzyl	519
42
1507-	phenyl	4-phenylbutyl	4-amidinobenzyl	544
43
1507-	phenyl	2-(3,4-dichloro-	4-amidinobenzyl	584
44		phenyl)ethyl
1507-	phenyl	2-(4-methylphenyl)-	4-amidinobenzyl	530
45		ethyl
1507-	phenyl	4-chlorobenzyl	4-amidinobenzyl	536
46
1507-	phenyl	3-(dimethylamino)	4-amidinobenzyl	497
47		propyl
1507-	phenyl	3,4-difluorobenzyl	4-amidinobenzyl	537
48
1512-	phenyl	2H,3H-benzo[e]1,4-	4-amidinobenzyl	560
01		dioxan-2-ylmethyl
1512-	phenyl	2,3-dimethoxybenzyl	4-amidinobenzyl	562
02
1512-	phenyl	3,4-methylenedioxy-	4-amidinobenzyl	545
04		phenyl
1512-	phenyl	2-(3,4-dimethoxy-	4-amidinobenzyl	576
05		phenyl)ethyl
1512-	phenyl	3-(phenyl)propyl	4-amidinobenzyl	530
06
1512-	phenyl	2-(3-methoxy)propyl	4-amidinobenzyl	483
07
1512-	phenyl	2-ethoxybenzyl	4-amidinobenzyl	546
11
1512-	phenyl	3-heptyl	4-amidinobenzyl	510
12
1512-	phenyl	butyl	4-amidinobenzyl	467
14
1512-	phenyl	2-(dimethylamino)-	4-amidinobenzyl	482
15		ethyl
1512-	phenyl	cycloheptyl	4-amidinobenzyl	508
16
1512-	phenyl	4-t-butylcyclohexyl	4-amidinobenzyl	550
17
1512-	phenyl	3-(2,3,4,5-tetrahydro-	4-amidinobenzyl	530
19		1,1-dioxothiophenyl)
1512-	phenyl	phenylamino	4-amidinobenzyl	487
20
1512-	phenyl	2,3-dimethyl-	4-amidinobenzyl	522
23		cyclohexyl
1512-	phenyl	2-fluoro-4-	4-amidinobenzyl	587
26		trifluoromethylbenzyl
1512-	phenyl	2-fluoro-5-	4-amidinobenzyl	587
27		trifluoromethylbenzyl
1512-	phenyl	3-fluoro-5-	4-amidinobenzyl	587
29		trifluoromethylbenzyl
1512-	phenyl	2-chloro-6-methyl-	4-amidinobenzyl	550
31		benzyl
1512-	phenyl	3,4,5-trifluorobenzyl	4-amidinobenzyl	555
32
1512-	phenyl	2,5-dichlorobenzyl	4-amidinobenzyl	570
35
1512-	phenyl	2,5-difluorobenzyl	4-amidinobenzyl	537
36
1512-	phenyl	3,5-difluorobenzyl	4-amidinobenzyl	537
39
1512-	phenyl	3-trifluoromethoxy-	4-amidinobenzyl	585
40		benzyl
1512-	phenyl	2-(3-trifluoromethyl-	4-amidinobenzyl	584
41		phenyl)ethyl
1512-	phenyl	2-trifluoromethoxy-	4-amidinobenzyl	585
42		benzyl
1512-	phenyl	2,6-difluorobenzyl	4-amidinobenzyl	537
43
1512-	phenyl	2-fluoro-6-	4-amidinobenzyl	587
44		trifluoromethylbenzyl
1512-	phenyl	2,4-dichloro-6-	4-amidinobenzyl	584
45		methylbenzyl
1512-	phenyl	2-(1-methyl-	4-amidinobenzyl	523
46		pyrrolidin-2-yl)-ethyl
1512-	phenyl	2-(pyrid-2-yl)ethyl	4-amidinobenzyl	517
47
1515-	3-	benzyl	4-amidinobenzyl	569
01	trifluoromethyl-
	phenyl
1515-	2-methoxyphenyl	benzyl	4-amidinobenzyl	532
02
1515-	1-(2-bromo-	benzyl	4-amidinobenzyl	586
03	thienyl)
1515-	2-chlorophenyl	benzyl	4-amidinobenzyl	536
04
1515-	3-methoxyphenyl	benzyl	4-amidinobenzyl	532
05
1515-	2-thienyl	benzyl	4-amidinobenzyl	508
06
1515-	4-fluorophenyl	benzyl	4-amidinobenzyl	519
07
1515-	4-trifluoro-	benzyl	4-amidinobenzyl	569
08	methylphenyl
1515-	3-fluorophenyl	benzyl	4-amidinobenzyl	519
09
1515-	3-bromophenyl	benzyl	4-amidinobenzyl	580
10
1515-	2-fluorophenyl	benzyl	4-amidinobenzyl	519
11
1515-	2-trifluoro-	benzyl	4-amidinobenzyl	569
12	methylphenyl
1515-	3-trifluoro-	cyclobutyl	4-amidinobenzyl	533
13	methylphenyl
1515-	2-methoxyphenyl	cyclobutyl	4-amidinobenzyl	495
14
1515-	1-(2-	cyclobutyl	4-amidinobenzyl	550
15	bromothienyl)
1515-	2-chlorophenyl	cyclobutyl	4-amidinobenzyl	500
16
1515-	3-methoxyphenyl	cyclobutyl	4-amidinobenzyl	495
17
1515-	2-thienyl	cyclobutyl	4-amidinobenzyl	471
18
1515-	4-fluorophenyl	cyclobutyl	4-amidinobenzyl	483
19
1515-	4-trifluoro-	cyclobutyl	4-amidinobenzyl	533
20	methylphenyl
1515-	3-bromophenyl	cyclobutyl	4-amidinobenzyl	544
22
1515-	2-fluorophenyl	cyclobutyl	4-amidinobenzyl	483
23
1515-	2-trifluoro-	cyclobutyl	4-amidinobenzyl	533
24	methylphenyl
1515-	3-trifluoro-	2-phenylethyl	4-amidinobenzyl	584
25	methylphenyl
1515-	2-methoxyphenyl	2-phenylethyl	4-amidinobenzyl	546
26
1515-	3-bromo-2-	2-phenylethyl	4-amidinobenzyl	600
27	thienyl)
1515-	2-chlorophenyl	2-phenylethyl	4-amidinobenzyl	550
28
1515-	3-methoxyphenyl	2-phenylethyl	4-amidinobenzyl	546
29
1515-	2-thienyl	2-phenylethyl	4-amidinobenzyl	522
30
1515-	4-fluorophenyl	2-phenylethyl	4-amidinobenzyl	534
31
1515-	4-trifluoro-	2-phenylethyl	4-amidinobenzyl	584
32	methylphenyl
1515-	3-fluorophenyl	2-phenylethyl	4-amidinobenzyl	534
33
1515-	3-bromophenyl	2-phenylethyl	4-amidinobenzyl	594
34
1515-	2-fluorophenyl	2-phenylethyl	4-amidinobenzyl	534
35
1515-	2-trifluoro-	2-phenylethyl	4-amidinobenzyl	584
36	methylphenyl
1515-	3-trifluoro-	2-(3,4-	4-amidinobenzyl	618
37	methylphenyl	dichlorophenyl)ethyl
1515-	2-methoxyphenyl	2-(3,4-	4-amidinobenzyl	580
38		dichlorophenyl)ethyl
1515-	1-(2-bromo-	2-(3,4-	4-amidinobenzyl	635
39	thienyl)	dichlorophenyl)ethyl
1515-	2-chlorophenyl	2-(3,4-	4-amidinobenzyl	584
40		dichlorophenyl)ethyl
1515-	3-methoxyphenyl	2-(3,4-	4-amidinobenzyl	580
41		dichlorophenyl)ethyl
1515-	2-thienyl	2-(3,4-	4-amidinobenzyl	556
42		dichlorophenyl)ethyl
1515-	4-fluorophenyl	2-(3,4-	4-amidinobenzyl	568
43		dichloropbenyl)ethyl
1515-	4-trifluoro-	2-(3,4-	4-amidinobenzyl	618
44	methylphenyl	dichlorophenyl)ethyl
1515-	3-fluorophenyl	2-(3,4-	4-amidinobenzyl	568
45		dichlorophenyl)ethyl
1515-	3-bromophenyl	2-(3,4-	4-amidinobenzyl	629
46		dichlorophenyl)ethyl
1515-	2-fluorophenyl	2-(3,4-	4-amidinobenzyl	568
47		dichlorophenyl)ethyl
1515-	2-trifluoro-	2-(3,4-	amidinobenzyl	618
48	methylphenyl	dichlorophenyl)ethyl
1522-	phenyl	2-hydroxyethyl	4-amidinobenzyl	455
02
1522-	phenyl	2-hydroxybutyl	4-amidinobenzyl	484
05
1522-	phenyl	(R)-2-butyl	4-amidinobenzyl	468
06
1522-	phenyl	6-hydroxyhexyl	4-amidinobenzyl	512
07
1522-	phenyl	2-(pyrrolidin-1-yl)-	4-amidinobenzyl	509
08		ethyl
122-	phenyl	(S)-2-butyl	4-amidinobenzyl	468
09
1522-	phenyl	3-pentyl	4-amidinobenzyl	482
11
1522-	phenyl	(S)-2-methylbutyl	4-amidinobenzyl	482
12
1522-	phenyl	2-mehylbutyl	4-amidinobenzyl	482
13
1522-	phenyl	3-methylbutyl	4-amidinobenzyl	482
14
1522-	phenyl	2-(3-methyl)butyl	4-amidinobenzyl	482
15
1522-	phenyl	2-(4-methyl)pentyl	4-amidinobenzyl	496
17
1522-	phenyl	3,3-dimethylbutyl	4-amidinobenzyl	496
18
1522-	phenyl	tricyclo[53.1.1<3,9>]	4-amidinobenzyl	546
19		dodec-3-yl
1522-	phenyl	tricyclo[53.1.1<3.9>]	4-amidinobenzyl	560
20		dodec-3-ylmethyl
1522-	phenyl	2-propynyl	4-amidinobenzyl	449
21
1522-	phenyl	2-(dimethylamino)-	4-amidinobenzyl	497
23		propyl
1522-	phenyl	N,N-butano	4-amidinobenzyl	465
27
1522-	phenyl	N,N-propano	4-amidinobenzyl	451
28
1522-	phenyl	benzylthio	4-amidinobenzyl	519
31
1522-	phenyl	2-methoxyethyl	4-amidinobenzyl	469
33
1522-	phenyl	2-methylpropyl	4-amidinobenzyl	468
34
1522-	phenyl	1,2-diethyl-	4-amidinobenzyl	538
35		pyrazolidin-4-yl
1522-	phenyl	cycloheptyl	4-amidinobenzyl	508
36
1522-	phenyl	N-(3-chloro-5-	4-amidinobenzyl	634
37		trifluoromethyl-pyrid-
		2-yl)-2-aminoethyl
1522-	phenyl	N-(3-trifluoromethyl-	4-amidinobenzyl	600
38		pyrid-2-yl)-2-
		aminoethyl
1522-	phenyl	6-cyanohexyl	4-amidinobenzyl	507
40
1522-	phenyl	3-hydroxypropyl	4-amidinobenzyl	469
41
1522-	phenyl	4-(pyrrolidin-1-yl)-	4-amidinobenzyl	537
42		butyl
1522-	phenyl	(S)-1-cyclohexylethyl	4-amidinobenzyl	522
43
1522-	phenyl	2-(2R)-bicyclo-	4-amidinobenzyl	506
44		[2.2.1]heptyl
1522-	phenyl	3-(2,3,4,5-tetrahydro-	4-amidinobenzyl	530
46		1,1-dioxothiophenyl)
1522-	phenyl	4-t-butylcyclohexyl	4-amidinobenzyl	550
47
1526-	3-aminophenyl	cyclopropyl	4-amidinobenzyl	466
01
1526-	3-aminophenyl	cyclopentyl	4-amidinobenzyl	495
03
1526-	3-aminophenyl	2,2,2-trifluoroethyl	4-amidinobenzyl	508
04
1526-	3-aminophenyl	2-(3-methoxypropyl)	4-amidinobenzyl	499
05
1526-	3-aminophenyl	2-(2-methylbutyl)	4-amidinobenzyl	497
06
1526-	3-aminophenyl	t-butyl	4-amidinobenzyl	483
07
1526-	3-aminophenyl	(S)-2-butyl	4-amidinobenzyl	483
09
1526-	3-aminophenyl	3-pentyl	4-amidinobenzyl	497
11
1526-	3-aminophenyl	ethyl	4-amidinobenzyl	454
12
1526-	3-aminophenyl	propyl	4-amidinobenzyl	469
13
1526-	3-aminophenyl	2-butyl	4-amidinobenzyl	483
14
1526-	3-aminophenyl	2-(3-methylbutyl)	4-amidinobenzyl	497
15
1526-	3-aminophenyl	(R)-2-butyl	4-amidinobenzyl	483
16
1526-	3-aminophenyl	2-(4-methylpentyl)	4-amidinobenzyl	511
17
1526-	3-aminophenyl	2-propenyl	4-amidinobenzyl	466
19
1526-	3-aminophenyl	2-propynyl	4-amidinobenzyl	464
21
1526-	3-aminophenyl	cyclobutyl	4-amidinobenzyl	481
23
1526-	3-aminophenyl	isopropyl	4-amidinobenzyl	469
24
1526-	3-aminophenyl	2-methoxyethyl	4-amidinobenzyl	485
25
1526-	3-aminophenyl	2-methylpropyl	4-amidinobenzyl	483
26
1526-	3-aminophenyl	(1S)-1-	4-amidinobenzyl	537
29		cyclohexylethyl
1526-	3-aminophenyl	2-(2R)bicyclo[2.2.1]-	4-amidinobenzyl	521
30		heptyl
1526-	3-aminophenyl	(2S)-oxalan-2-	4-amidinobenzyl	511
33		ylmethyl
1526-	3-aminophenyl	butyl	4-amidinobenzyl	483
40
1526-	3-aminophenyl	cyclopropylmethyl	4-amidinobenzyl	481
41
1543-	3-aminophenyl	2-(pyrrolidin-1-	4-amidinobenzyl	524
03		yl)ethyl
1543-	3-aminophenyl	methyl	4-amidinobenzyl	440
05
1543-	3-aminophenyl	3-(1-imidazolyl)-	4-amidinobenzyl	535
07		propyl
1543-	3-aminophenyl	2-dimethylaminoethyl	4-amidinobenzyl	498
09
1543-	3-aminophenyl	6-amidocarbonylhexyl	4-amidinobenzyl	540
11
1543-	3-aminophenyl	3-hydroxypropyl	4-amidinobenzyl	485
13
1543-	3-aminophenyl	2-(piperid-1-yl)ethyl	4-amidinobenzyl	538
15
1543-	3-aminophenyl	2-dimethylamino-	4-amidinobenzyl	512
19		propyl
1543-	3-aminophenyl	4-(pyrrolidin-1-	4-amidinobenzyl	552
21		yl)butyl
1543-	3-aminophenyl	2-(3-diethylamino)-	4-amidinobenzyl	540
25		propyl
1543-	3-aminophenyl	3-(pyrrolidin-1-	4-amidinobenzyl	538
27		yl)propyl
1543-	3-aminophenyl	ethyl	4-amidino-2-	472
31			fluorobenzyl
1543-	3-aminophenyl	cyclopropyl	4-amidino-2-	484
33			fluorobenzyl
1543-	3-aminophenyl	cyclopentyl	4-amidino-2-	513
34			fluorobenzyl
1543-	3-aminophenyl	propyl	4-amidino-2-	486
35			fluorobenzyl
1543-	3-aminophenyl	butyl	4-amidino-2-	501
36			fluorobenzyl
1543-	3-aminophenyl	2-(pyrrolidin-1-	4-amidino-2-	542
37		yl)ethyl	fluorobenzyl
1543-	3-aminophenyl	2-methylpropyl	4-amidino-2-	501
38			fluorobenzyl
1543-	3-aminophenyl	cyclobutyl	4-amidino-2-	499
39			fluorobenzyl
1543-	3-aminophenyl	isopropyl	4-amidino-2-	486
40			fluorobenzyl
1543-	3-aminophenyl	cyclobutyl	8-aza-1,4-dioxa-	474
41			spiro[4.5]decyl
1543-	3-aminophenyl	cyclobutyl	3,3-diethyl-	462
45			pyrrolidin-1-yl
1543-	3-aminophenyl	cyclobutyl	4-(4-amino-	497
46			phenyl)pyrazinyl

TABLE 7
Structures of Pyrazinones Prepared by General Robotic and Experimental Procedures
Ex.				MW
No.	R2	B-A-	R4a	(m/z + 1)
1517-	3-thienyl	benzyl	H	508
01
1517-	phenyl	benzyl	(S)-methyl	516
03
1517-	phenyl	benzyl	methylthiomethyl	562
04
1517-	phenyl	benzyl	(R)-methyl	516
05
1517-	2,6-	benzyl	H	570
06	dichlorophenyl
1517-	3-thienyl	cyclobutyl	H	472
07
1517-	phenyl	cyclobutyl	benzyl	556
08
1517-	phenyl	cyclobutyl	(S)-methyl	480
09
1517-	phenyl	cyclobutyl	methylthiomethyl	526
10
1517-	phenyl	cyclobutyl	(R)-methyl	480
11
1517-	2,6-	cyclobutyl	H	534
12	dichlorophenyl
1517-	3-thienyl	2-phenylethyl	H	522
13
1517-	phenyl	2-phenylethyl	benzyl	606
14
1517-	phenyl	2-phenylethyl	(S)-methyl	530
15
1517-	phenyl	2-phenylethyl	methylthiomethyl	576
16
1517-	phenyl	2-phenylethyl	(R)-methyl	530
17
1517-	2,6-	2-phenylethyl	H	584
18	dichlorophenyl
1517-	3-thienyl	2-(3-chlorophenyl)-	H	556
19		ethyl
1517-	phenyl	2-(3-chlorophenyl)-	benzyl	640
20		ethyl
1517-	phenyl	2-(3-chlorophenyl)-	(R)-methyl	564
23		ethyl
1517-	2,6-	2-(3-chlorophenyl)-	H	619
24	dichlorophenyl	ethyl
1517-	phenyl	cyclohexyl	H	494
25
1517-	phenyl	4-heptyl	H	510
26
1517-	phenyl	2-hexyl	H	496
29
1517-	phenyl	N-methyl N-(1-	H	468
31		methylethyl)
1517-	phenyl	propyl	H	453
33
1517-	phenyl	butyl	H	468
35
1517-	phenyl	trimethylsilylmethyl	H	498
36
1517-	phenyl	2-butyl	H	468
37
1517-	phenyl	prop-2-enyl	H	451
38
1517-	phenyl	methyl	H	425
39
1517-	phenyl	3-methylbutyl	H	482
40
1517-	phenyl	3,3-dimethylbutyl	H	496
41
1517-	phenyl	cyclopropylmethyl	H	465
43
1517-	phenyl	isopropyl	H	453
44
1517-	phenyl	ethyl	H	439
46
1517-	phenyl	3-heptyl	H	524
47
1517-	phenyl	pentyl	H	482
48

Formula (I) compounds of this invention possessing hydroxyl, thiol and amine functional groups can be converted to a wide variety derivatives. Alteratively, derivatized Formula (I) compounds can be obtained by first derivatizing one or more intermediates in the processes of preparation before further transforming the derivatized intermediate to compounds of Formula (I). A hydroxyl group in the form of an alcohol or phenol can be readily converted to esters of carboxylic, sulfonic, carbamic, phosphonic, and phosphoric acids. Acylation to form a carboxylic acid ester is readily effected using a suitable acylating reagent such as an aliphatic acid anhydride or acid chloride. The corresponding aryl and heteroaryl acid anhydrides and acid chlorides can also be used. Such reactions are generally carried out using an amine catalyst such as pyridine in an inert solvent. Similarly, carbamic acid esters (urethanes) can be obtained by reacting a hydroxyl group with isocyanates and carbamoyl chlorides. Sulfonate, phosphonate, and phosphate esters can be prepared using the corresponding acid chloride and similar reagents. Compounds of Formula (I) that have at least one thiol group present can be converted to the corresponding thioesters derivatives analogous to those of alcohols and phenols using the same reagents and comparable reaction conditions. Compounds of Formula (I) that have at least one primary or secondary amine group present can be converted to the corresponding amide derivatives. Amides of carboxylic acids can be prepared using the appropriate acid chloride or anhydrides with reaction conditions analogous to those used with alcohols and phenols. Ureas of the corresponding primary or secondary amine can be prepared using isocyanates directly and carbamoyl chlorides in the presence of an acid scavenger such as triethylamine or pyridine. Sulfonamides can be prepared from the corresponding sulfonyl chloride in the presence of aqueous sodium hydroxide or a tertiary amine. Suitable procedures and methods for preparing these derivatives can be found in House's Modem Synthetic Reactions, W. A. Benjamin, Inc., Shriner, Fuson, and Curtin in The Systematic Identification of Organic Compounds, 5th Edition, John Wiley & Sons, and Fieser and Fieser in Reagents for Organic Synthesis, Volume 1, John Wiley & Sons. Reagents of a wide variety that can be used to derivatize hydroxyl, thiol, and amines of compounds of Formula (I) are available from commercial sources or the references cited above, which are incorporated herein by reference.

Formula (I) compounds of this invention possessing hydroxyl, thiol, and amine functional groups can be alkylated to a wide variety of derivatives. Alternatively, alkylated Formula (I) compounds can be obtained by first alkylating one or more intermediates in the processes of preparation before further transforming the alkylated intermediate to compounds of Formula (I). A hydroxyl group of compounds of Formula (I) can be readily converted to ethers. Alkylation to form an ether is readily effected using a suitable alkylating reagent such as an alkyl bromide, alkyl iodide or alkyl sulfonate. The corresponding aralkyl, heteroaralkyl, alkoxyalkyl, aralkyloxyalkyl, and heteroaralkyloxyalkyl bromides, iodides, and sulfonates can also be used. Such reactions are generally carried out using an alkoxide forming reagent such as sodium hydride, potassium t-butoxide, sodium amide, lithium amide, and n-butyl lithium using an inert polar solvent such as DMF, DMSO, THF, and similar, comparable solvents, amine catalyst such as pyridine in an inert solvent. Compounds of Formula (I) that have at least one thiol group present can be converted to the corresponding thioether derivatives analogous to those of alcohols and phenols using the same reagents and comparable reaction conditions. Compounds of Formula (I) that have at least one primary, secondary or tertiary amine group present can be converted to the corresponding secondary, tertiary or quaternary ammonium derivative. Quaternary ammonium derivatives can be prepared using the appropriate bromides, iodides, and sulfonates analogous to those used with alcohols and phenols. Conditions involve reaction of the amine by warming it with the alkylating reagent with a stoichiometric amount of the amine (i.e., one equivalent with a tertiary amine, two with a secondary, and three with a primary). With primary and secondary amines, two and one equivalents, respectively, of an acid scavenger are used concurrently. Secondary or tertiary amines can be prepared from the corresponding primary or secondary amine. A primary amine can be dialkylated by reductive amination using an aldehyde, such as formaldehyde, and sodium cyanoborohydride in the presence of glacial acetic acid. A primary amine can be monoalkylated by first mono-protecting the amine with a ready cleaved protecting group, such as trifluoroacetyl. An alkylating agent, such as dimethylsulfate, in the presence of a non-nucleophilic base, such as Barton's base (2-tert-butyl-1,1,3,3-tetramethylguanidine), gives the monomethylated protected amine. Removal of the protecting group using aqueous potassium hydroxide gives the desired monoalkylated amine. Additional suitable procedures and methods for preparing these derivatives can be found in House's iModem Synthetic Reactions, W. A. Benjamin, Inc., Shriner, Fuson, and Curtin in The Systematic Identification of Organic Compounds, 5th Edition, John Wilev & Sons, and Fieser and Fieser in Reagents for Organic Synthesis published by John Wiley & Sons. Perfluoroalkyl derivatives can be prepared as described by DesMarteau in J. Chem. Soc. Chem. Commun. 2241 (1998). Reagents of a wide variety that can be used to derivatize hydroxyl, thiol, and amines of compounds of Formula (I) are available from commercial sources or the references cited above, which are incorporated herein by reference.

The examples of synthetic approaches to the preparation pyrazinones derivatized in a nucleophilic substituent such as may be present in B, R¹, R² and Y⁰ are shown in specific Examples 100 through 104 below. The specific examples recited below should be considered a being merely illustrative of the wide variety possible and not as limiting to one of ordinary skill in the art.

Example 100

By following the method of Example 1 and substituting 3-nitrobenzaldehyde for benzaldehyde, 1-benzyloxycarbonylmethyl-3,5-dichloro-6-(3-nitrophenyl)pyrazinone (EX-100A) was obtained. The pyrazinone, 1-benzyloxycarbonylmethyl-3,5-dichloro-6-(3-nitrophenyl)pyrazinone (EX-100A), (15.01 g, 34.6 mmol) was taken up in 325 mL of 50% EtOH (w/w) and heated to 75° C. EtOAc was added until the solution was homogeneous (about 80 mL). Iron powder (9.4 g, 168 mmol) was added, followed by 0.57 mL of 12 M HCl (6.8 mmol) in about 0.6 mL of 50% EtOH. The reaction was monitored by TLC (80% EtOAc/hexanes) and was complete within 40 minutes. The reaction mixture was cooled to room temperature, and the iron was removed by filtration through Celite. The yellow solution was diluted with 600 mL of EtOAc and 300 mL of water. Saturated NaCl was added to help separate the layers. The organic phase was washed with saturated NaHCO₃ (2×250 mL), saturated NaCl 1×250 mL), dried over MgSO₄, filtered, and the solvents were removed under reduced pressure. The residue was taken up in 20-25 mL of 3.4 M HCl in EtOAc. Additional EtOAc (about 25 mL) was added, and the mixture was heated to dissolve all of the compound. The volatile components were removed under reduced pressure. The residue (crusty solid) was taken up in EtOAc and slowly dripped into hexanes. The pale yellow solid that precipitated was filtered and dried under vacuum at room temperature to yield 12.19 g (80% yield) of 1-benzyloxycarbonylmethyl-3,5-dichloro-6-(3-aminophenyl)pyrazinone hydrochloride (EX-100B) as a pale yellow solid: ¹H NMR (300 MHz, CD₃OD) δ 4.61 (AB q, 2H, J=17 Hz), 5.20 (AB q, 2H, J=12 Hz), 7.31-7.51 (m, 7H), 7.63-7.67 (m, 2H); HPLC purity (retention time): 91% (3.0 min); LRMS m/z 404 (M⁺+H).

The pyrazinone, 1-benzyloxycarbonylmethyl-3,5-dichloro-6-(3-aminophenyl)pyrazinone hydrochloride (EX-100B), (78.2 mg, 0.18 mmol) was taken up in 5 mL of dichioromethane. Pyridine (32 mL, 0.40 mmol) was added, followed by acetyl chloride (26 mL, 0.36 mmol) in 1 mL of dichloromethane. The reaction was stirred at ambient temperature until the reaction was complete by TLC and LC/MS after 24 hours. The reaction solution was then washed with saturated NaHCO₃ (4×5 mL), saturated NaCl (1×5 nmL), dried over MgSO₄ and concentrated to give 68.9 mg (86% yield) of the product 1-benzyloxycarbonyl-methyl-3,5-dichloro-6-(3-acetamidophenyl)pyrazinone (EX-100C): ¹H NMR (300 MHz, CDCl₃) δ 2.21 (s, 3H), 4.55 (AB q, 2H, J=16.6 Hz), 5.17 (s, 2H), 30 6.96 (d, 1H, J=7.7 Hz), 7.26-7.40 (m, 5H), 7.57 (s, 1H), 7.747.79 (m, 1H), 8.19-8.24 (br m, 1H), 8.65 (br s, 1H).

Following the necessary final steps of the procedure of Example 1, EX-100C was converted to the product: HPLC purity (retention time): 100% (2.9 min); LRMS m/z 572.5 (M⁺+H).

Example 101

By following the method of Example 100 and substituting methanesulfonyl chloride for acetyl chloride the product was prepared: HPLC purity (retention time): 100% (2.9 min); LRMS m/z 608.2 (M⁺+H).

Example 102

By following the method of Example 100 and substituting trifluoroacetic anhydride for acetyl chloride, the product was prepared: HPLC purity (retention time): 100% (3.3 min); LRMS m/z 626.3 (M⁺+H).

Example 103

By following the method of Example 1 and substituting 3-nitrobenzaldehyde for benzaldehyde, 1-benzyloxycarbonylmethyl-3,5-dichloro-6-(3-aminophenyl)pyrazinone was obtained.

The 1-benzyloxycarbonylmethyl-3,5-dichloro-6-(3-aminophenyl)-pyrazinone (210.6 mg, 0.48 mmol) was taken up in 9 mL of acetonitrile. Polyarnine resin (1.05 g, 4.9 mmol) was added, along with about 10 mL of dichloromethane. After agitating about 10 mins the resin was filtered, rinsed with acetonitrile, and the solvents concentrated to about 10 mL. Formaldehyde (37%) (0.4 mL, 4.9 mmol) was added, followed by NaCNBH₃ (1.0 M in THF, 1.5 mL, 1.5 mmol) and the dropwise addition of two 50 mL portions of glacial acetic acid (17.4 M, 1.74 mmol). The reaction was monitored by LC/MS. A third 50 mL portion of glacial acetic acid was added after 3.5 h to force the reaction to completion. The solution was diluted with about 40 mL of diethyl ether and washed with 1.2 M NaOH (3×5 mL), saturated NaCl (1×5 mL), dried over MgSO₄, and the solvents were removed under reduced pressure to give 0.17 g (82% yield) of 1-benzyloxycarbonylmethyl-3,5-dichloro-6-(3-[N,N-dimethylaminolphenyl)pyrazinone (EX-103A): ¹H NMR (300 MHz, CDCl₃): δ 2.96 (s, 6H), 4.59 (s, 2H), 5.19 (s, 2H), 6.55 (m, 2H), 6.82 (d, 1H), 7.25-7.40 (m, 6H).

Following the necessary final steps of the procedure of Example 1, EX-103A was converted to the product: HPLC purity (retention time): 94% (2.6 min); LRMS m/z 558.4 (M⁺+H).

Example 104

By following the method of Example 100 and replacing phenethylamine with isopropylamine, 1-benzyloxycarbonylmethyl-3-isopropylamino-5-chloro-6-(3-aminophenyl)pyrazinone was obtained.

The 1-benzyloxycarbonylmethyl-3-isopropylamino-5-chloro-6-(3-aminophenyl)pyrazinone (1.01 g, 2.4 mmol) was dissolved in 25 mL of THF. Pyridine (0.37 mL, 4.6 mmol) was added, followed by pentafluoropyridine trifluoroacetate (0.79 mL, 4.6 mmol). After 2 h, polyamine resin (3.1 g, 8.7 mmol) and 25 mL of dichloromethane was added, and the mixture was vigorously stirred for 1-2 h. The resin was filtered, rinsed with dichloromethane (3×5 mL), and the volatiles were removed under reduced presssure to give the desired product EX-104A in quantitative yield: H NMR (300 MHz, CDCl₃) δ 1.30 (d, 3H, J=1.4 Hz), 1.32 (d, 3H, J=1.4 Hz), 4.24 (m, 1H), 4.47 (AB q, 2H, J=16.9 Hz), 5.15 (s, 2H), 6.22 (d, 1H, J=8.2 Hz), 7.12 (d, 1H, J=7.7 Hz), 7.25-7.42 (m, 5H), 7.54 (s, 1H), 7.73-7.81 (m, 1H), 8.62 (d, IH, J=4.2 Hz), 9.10 (br s, 1H).

The 1-benzyloxycarbonylmethyl-3-isopropylamino-5-chloro-6-(3-[N-trifluoroacetamidolphenyl)pyrazinone (EX-104A) (0.63 g, 1.2 mmol) was dissolved in 20 mL of dichloromethane. Barton's base (2-tert-butyl-1,1,3,3-tetramethylguanidine) (0.5 mL, 2.5 mmol) and dimethylsulfate (0.66 mL. 7 mmol) were added, and the reaction was stirred at ambient temperature overnight. The reaction was monitored by LC/MS, and after completion the solution was washed with aqueous NH₄OH (2×10 mL) and 5% HCl (1×10 mL). The combined aqueous washes were extracted with dichloromethane (1×10 mn). The combined organic phases were washed with saturated NaCl (1×10 mL), dried over MgSO₄, filtered, and the volatiles were removed under reduced pressure to give 0.51 g (80% yield) of the desired product (EX-104B): HPLC purity (retention time): 97% (4.4 min); LRMS m/z 537.5 (M⁺+H).

Following the necessary final steps of the procedure of Example 1, EX-104B was converted to the product: ¹H NMR (300 MHz, CD₃OD) δ 1.31 (s, 3H), 1.33 (s, 3H), 2.94 (s, 3H), 4.22 (m, 1H), 4.404.52 (m, 4H), 7.01-7.05 (m, 2H), 7.17-7.19 (m, 1H), 7.42-7.45 (m, 1H), 7.49 (d, 2H, J=8.3 Hz) 7.80 (d, 2H, J=8.3 Hz); HPLC purity (retention time): 100% (2.1 min); LRMS m/z 481.6 (M⁺+H).

Pyrazinones, wherein a B-A substituent is introduced by reaction of a 3-amino group of an intermediate pyrazinone with an electrophilic reagent, can be prepared using the general procedures and processes shown in Scheme 9 and Scheme 10 and as illustrated below in specific Examples 105-109.

The examples of synthetic approaches to the preparation pyrazinones in which the substituents represented by B-A are introduced by reaction of a 3-amino group of the pyrazinone with an electrophilic reagent are shown in.specific Examples 105 through 109 below. The specific examples recited below should be considered a being merely illustrative of the wide variety possible and not construed as limiting to one of ordinary skill in the art.

Example 105

1-Benzyloxycarbonylmethyl-3,5-dichloro-6-phenylpyrazinone (EX-1B) (0.8 g, 2.06 mmol) was mixed with 20 ml 0.5 M ammonia in dioxane in a sealed tube. The tube was heated to 100° C. for 12 hours. After removing the dioxane under reduced pressure, the residue was dissolved in ethyl acetate. The ethyl acetate solution was washed with water and brine and dried over anhydrous Na₂SO₄. After removing the solvent, the product was recrystallized in acetone to yield the pure amino pyrazinone EX-105A as a white crystal solid (0.76 g, 99%): HPLC-MS (0 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 3.75 min, M+H⁺=370.0 for formula C₁₉H₁₇ClN₃O₃. ¹H NMR (400 MHz, CDCl₃): δ 4.43 (s, 2H), 5.13 (s, 2H), 5.78 (b, 2H), 7.21-7.27 (m, 5H), 7.39-7.39 (m, 5H).

EX-105A (4.7 g, 12.73 mmol) was mixed with 1.34 g 10% Pd/C in 100 ml methanol. The mixture was stirred under hydrogen atmosphere that was introduced via a balloon for 48 hours. After filtration and removing the solvent, a white crystal solid was obtained as the carboxylic acid product EX-105B (3.0 g, 97%): HPLC-MS (0 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 1.45 min, M+H⁺=246.0 for formula C₁₂H₁₂N₃O₃.

EX-105B (3.0 g, 12.2 mmol) in 100 ml methanol was cooled down to −50° C. SOCl₂ (1.4 ml, 19.1 mmol) was added to the solution. After stirring at room temperature for four hours, the mix was heated to reflux for three hours. After removing the solvent, the residue was subjected to a silica gel plug using ethyl acetate to elute. The pure product was obtained by recrystallization in methanol as a white crystal solid EX-105C (2.22 g, 68%): HPLC-MS (0 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 1.94 min, M+H⁺=260.0 for formula C₁₃H₁₄N₃O₃.

EX-105C (0.258 g, 1 mmol) was mixed with benzenesulfonyl chloride (0.353 g, 2 mmol) in 3 ml pyridine. The reaction mixture was heated at 90° C. for 2 hours. After removing the pyridine, the crude product was obtained by an aqueous work-up procedure. The crude product EX-105D was dissolved in 10 ml methanol and treated with 10 ml 1M LiOH solution for 15 minutes. After the solution was acidified with 2 N HCl to a pH of about 2 and the methanol removed under reduced pressure, a yellow precipitate was obtained via filtration and washing with water. The pure sulfonamide EX-105E is a yellow crystalline solid (0.267 g, 70%):

HPLC-MS (0 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 2.88 min, M+H⁺=386.0 for formula C₁₈H₁₆N₃O₅S. ¹H NMR (400 MHz, methanol-d₄): δ 4.44 (s, 2H), 6.77 (s, 1H), 732 (dd, J=8.0, 1.6 Hz, 2H), 7.42-7.48 (m, 3H), 7.54 (t, J=8.0 Hz, 2H), 7.60-7.64 (m, 1H), 8.09 (d, J=8.0, 2H). ¹³C NMR (101 MHz, methanol-d₄): δ 48.4, 129.2, 129.9, 130.0, 130.6, 131.0, 132.6, 134.4, 141.4, 146.1, 157.0, 159.0, 160.0, 170.3.

EX-105E (0.106 g, 0.275 mmol) was mixed with EDC (0.055 g, 0.289 mmol) and HOBt (0.044 g, 0.289 mmol) in 2 ml DMF. The mixture was stirred for 10 minutes. To this mixture was then added the protected amidine, 4-(N-benzyloxycarbonylamidino)benzylamine hydrogen chloride salt (0.289 mmol), and DIEA (0.144 ml, 0.825 mmol) in 1 ml DMF. The reaction solution was stirred for 2 hours at room temperature. The DMF was removed under reduced pressure. The remaining residue was triturated in 1 N HCl and washed with water to yield the product EX-105F as an off-white amorphous solid (0.152 g, 85%): HPLC-MS (0 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 3.14 min, M+H⁺=651.3 for formula C₃₄H₃₀N₅O₇S. H NMR (400 MHz, methanol-d₄): δ 4.42 (s, 2H), 4.5.1 (s. 2H), 5.40 (s. 2H), 6.76 (s, 1H), 7.35-7.62 (m, 15H), 7.75 (d, J=8.0 Hz, 2H), 8.08 (d, J=8.0 Hz, 2H). ¹³C NMR (101 MHz, methanol-d₄): δ 43.6, 49.7,70.7, 111.6, 118.2, 119.7, 127.3. 128.7, 129.0, 129.1, 129.8, 129.9, 130.0, 130.8, 131.0, 132.6, 134.4, 135.8, 136.2, 141.5, 146.3, 147.6, 153.0, 154.5, 167.9, 169.0.

EX-105F (0.148 g, 0.228 mmol), p-toluenesulfonic acid mono hydrate (0.045 g, 0.24 mmol) and 10% Pd on activated carbon (0.012 g, 0.007 mmol) were: mixed with 5 ml methanol. The mixture was stirred for 2 hours under an atmosphere of hydrogen that was introduced through a rubber balloon. After filtenrng off the catalyst and removing the methanol, the remaining residue was triturated in a solvent of 2:1 ether to methanol to yield a white amorphous solid as the product (0.105 g, 95%) as the mono-salt of p-toluenesulfonic acid: HPLC-MS (0 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 2.64 min, M+H⁺=517.5 for formula C₂₆H₂₅N₆O₄S. ¹H NMR (400 MHz, methanol-d₄): δ 2.35 (s, 3H), 4.40 (s, 2H), 4.52 (s, 2H), 6.77 (s, 1H), 7.21 (d, J=7.6 Hz, 2H), 7.34 (d, J=7.2 Hz, 2H), 7.41-7.51 (m, 3H), 7.55 (t, J=7.6 Hz, 2H), 7.64 (t, J=7.2 Hz, 1H), 7.79 (d, J=8.0Hz, 2H), 7.74 (d, J=8.0 Hz, 2H). ¹³ C NMR (101 MHz, methanol-d₄): δ 21.2, 43.5, 70.7, 119.5, 126.8, 128.0, 128.7, 128.9, 129.0, 129.7, 129.8, 129.9, 130.6, 130.9, 132.4, 134.3, 136.0, 141.3, 141.6, 146.2, 146.4, 152.9, 167.9, 168.7.

Example 106

Following the method of Example 105, EX-105C (0.0932 g, 0.36 mmol) was treated with phenyl isocyanate (0.128 g, 1.08 mmol) and 0.2 ml pyridine in 2 ml acetonitrile at 80° C. for 3 hours instead of benzenesulfonyl chloride. After the reaction mixture was kept in a freezer for two days, a nice crystal solid formed as the pure pyrazinone urea EX-106A (0.129 g, 95%): HPLC-MS (0 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 3.73 min, M+H³⁰ =379.3 for formula C₂₀H₁₉N₄O₄.

¹H NMR (400 MHz, CDCl₃): δ 3.75 (s, 3H), 4.55 (s, 2H), 6.97 (s, 1H), 7.10 (t, J=7.6 Hz, 1H), 7.32-7.38 (m, 4H), 7.46-7.52 (m, 3H), 7.58 (d, J=8.0 Hz, 2H), 8.28 (s, 1H), 11.1 (s, 1H). ¹³C NMR (101 MHz, CDCl₃): δ 47.4, 52.8, 119.6, 120.2, 123.9, 128.9, 129.1, 129.4, 130.1, 130.9, 133.8, 137.8, 145.7, 150.8, 150.9, 167.3.

Saponification of compound EX-106A manner similar to the procedure as described in the synthesis of EX-105D yielded compound EX-106B. HPLC-MS (0 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 334 min, M+H⁺=365.1 for formula C₁₉H₁₆N₄O₄. Compound EX-106B was coupled with 4(N-benzyloxycarbonylamidino)benzylarmine hydrogen chloride salt using EDC, HOBt and DIEA as described before to yield the protected product EX-106C as an off-white solid: HPLC-MS (0 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 3.58 min, M+H⁺=630.0 for formula C₃₅H₃₂N₇O₅. ¹H NMR (400 MHz, methanol-d₄): δ 4.49 (s, 2H), 4.61 (s, 2H), 5.40 (s, 2H), 7.06 (s, 1H), 7.11 (t, J=7.2 Hz, 1H), 7.32-7.56 (m. 16H), 7.76 (d, J=8 Hz, 2H).

EX-106C was converted to the HCl salt of the product by hydrogenation in methanol in the presence of HCl with Pd/C as the catalyst. The product was an off-white amorphous solid: HPLC-MS (0 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 3.01 min, M+H⁺=496.4 for formula C₂₇H₂₆N₇O₃. ¹H NMR (400 MHz, methanol-d₄): δ 4.47 (s, 2H), 4.65 (s, 2H), 6.97 (s, 1H), 7.15 (t, J=7.2 Hz, 1H), 7.27-7.54 (m, 9H), 7.57 (d, J=7.2 Hz, 2H) 7.78 (d, J=8.0 Hz, 2H), 8.76 (s, 1H), 9.26 (s, 1H). HRMS m/z MH⁺ 496.2036, calcd for C₂₇H₂₆N₇O₃ 496.2097.

Example 107

Using the procedure of Example 106 and substituting 3-(benzyloxycarbonylamido)phenyl isocyanate for phenyl isocyanate, the product was obtained as the HCl salt: HPLC-MS (0 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 1.84 min, M+H⁺=511.6 for formula CC₂₇H₂₇N₈O₃. ¹H NMR (400 MHz, methanol-d₄): δ 4.46 (s, 2H), 4.65 (s, 2H), 6.97 (s, 1H), 7.17 (d, J=6.8 Hz, 1H), 7.45-7.60 (m, 8H), 7.78 (m, 3H) 7.94 (s, 1H), 8.77 (s, 1H), 9.26 (s, 1H). HRMS m/z MH⁺ 511.2251, calcd for C₂₇H₂₇N₈O₃ 511.2206.

Example 108

Using the procedure of Example 106 and substituting 3,5-dichlorophenyl isocyanate for phenyl isocyanate, the product was obtained as the HCl salt: HPLC-MS (0 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 3.41 min, M+H⁺=564.4 for formula C₂₇H₂₄Cl₂N₇O₃. ¹H NMR (400 MHz, methanol-d₄): δ 4.47 (s, 2H). 4.63 (s, 2H), 7.04 (s, 1H), 7.18 (t, J=1.6 Hz, 1H), 7.45-7.56 (m, 7H), 7.64 (d, J=2 Hz, 2H) 7.78 (d, J=8.0 Hz, 2H), 8.77 (s, 1H), 9.26 (s, 1H). HRMS m/z MH³⁰ 564.1351, calcd for C₂₇H₂₄CI₂N₇O₃ 564.1318.

Example 109

Using the procedure of Example 106 and substituting isopropyl isocyanate for phenyl isocyanate, the product was obtained as the HCl salt: HPLC-MS (0 to 95% AcCN/6 min @ 1.0 mL/Min @ 254 nm @ 50° C.): retention time 2.43 mn, M+H⁺=462.4 for formula C₂₄H₂₈N₇O₃. ¹H NMR (400 MHz, methanol-d₄): δ 1.25 (d, J=6.4 Hz, 6H), 3.99 (m, 1H), 4.45 (s, 2H), 4.64 (s, 2H), 6.82 (s, 1H), 7.43-7.53 (m, 5H), 7.60 (m, 1H) 7.67 (t, J=6.4 Hz, 1H), 7.78 (d, J=8.0 Hz, 2H), 8.77 (s, 1H), 9.26 (s, 1H). HRMS m/z MH⁺ 462.2230, calcd for C₂₄H₂₈N₇O₃ 462.2254.

Example 110

The protected pyrazinone intermediate 1-(N-(4-(N-benzyloxycarbonylamidino)benzyl)amidocarbonylmethylene)-5-chloro-3-(N-isopropylamino)-6-(>nitro-2-carboxymethylthiophenyl)pyrazinone (prepared from commercially available 2-fluoro-5-nitrobenzaldehyde as described in the general pyrazinone inhibitor synthesis section; Scheme 1, Scheme 2, and Examples disclosed herein; 119 mg, 0.18 mmol) was dissolved in DMF (20 mL) and treated with triethylamine (7/7 μL). To this solution was added thioglycolic acid (18.6 mg, 0.20 mmol), and the resulting mixture was heated to 50° C. and stirred for 1 hour. At this time LCMS indicated approximately 50% conversion. Sodium hydride (15.0 mg, 0.63 mmol) and another 3 equivalents of thioglycolic acid (55.8 mg) were added over the next two hours and stirring continued. After 5 hours LCMS indicated 96% conversion. The mixture was concentrated to give EX-111A: LRMS (ESI) [M +H]⁺=723.

EX-111A (≦0.18 mmol) was placed in a Parr bottle and dissolved in glacial acetic acid (35 mL). Under an argon blanket, 10% Pd/C (52 mg) was added. The resulting heterogeneous mixture was hydrogenated at 60 psi and room temperature for 6 hours. LCMS shows complete reduction of the nitro group to the corresponding amine. The catalyst was filtered and the solvent evaporated. The crude Z-protected intermediate (EX-111B) was taken up into glacial acetic acid (10 mL), treated with 30% HBr in acetic acid (15 mL) and stirred at room temperature for 15 hours. The mixture was then concentrated and purified by reverse phase HPLC (C18 column, 90% (0.1% TFA in water)/10% acetonitrile gradient to 10% aqueous/90% organic over 10 min) to afford 6 mg of product. Analytical HPLC (Beckman Ultrasphere ODS, 4.6 mm×250 mm, 85% (0.1% TFA in water/15% acetonitrile gradient to 15% aqueous/85% organic over 25 min) showed 100% purity at retention time=10.67 min; LRMS (ESI) [M+H]⁺=558.

Example 111

Using the procedure of Example 110 and substituting potassium methanethiolate for thioglycolic acid with no additional base added oave the product: LRMS (ESI) [M +H]⁺=514.

Example 112

Using the procedure of Example 110 and substituting 3-mercaptobenzoic acid for thioglycolic. The methyl ester of the product was formed quantitatively during hydrogenation/hydrogenolysis conducted in 4 N HCl/MeOH: LRMS (ESI, negative ion mode) [M−H]⁻=632.

Example 113

A solution of 1-(tert-butoxycarbonylmethyl)-6-bromo-3-(N-cyclobutylamino)pyrazinone (500 mg, 1.4 mmol) and 4-cyanobenzeneboronic acid (411 mg, 2.8 mmol) in toluene (7.0 mL), ethyl alcohol (5.0 mL), and sodium carbonate (4.4 mL, 2.0 N), was treated with tetrakis(triphenylphosphine)-palladium(0) (80 mg, 0.07 mmol). The mixture was deoxvgenated three times (hi-vacuum/nitrogen purge), and heated to 75° C. for 18 hrs. The reaction was cooled to room temperature, water (75 mL) was added and extracted three times with ethyl acetate. The organic layer was washed with brine, dried over magnesium sulfate, and concentrated in vacuo. Purification by column chromatography, eluting with 15% ethyl acetate/hexanes and then with 30% ethyl acetate/hexanes afforded EX-113A (270 mg, 0.71 mmol) as a white solid with M+H of 381.

A solution of EX-113A (270 mg, 0.71 mmol) in methylene chloride (5 mL) was treated with trifluoroacetic acid (5 mL) for 18 hrs. The reaction was concentrated in vacuo, toluene added, concentrated, diethyl ether added, and the solution concentrated in vacuo to afford EX-113B (230 mg, 0.70 mmol) as an off white solid.

A solution of EX-113B (200 mg, 0.62 mmol) in methylene chloride (8 mL) was treated with 1-hydroxybenzotriazole (100 mg, 0.74 mmnol), EDC (147 mg, 0.74 mmol), diisopropyl ethyl amine (0.08 mL) and 4-cyanobenzylamine (98 mg, 0.74 mmol) for 18 hrs. Water was added and then extracted 3 times with ethyl acetate. The organics were washed with brine, dried over magnesium sulfate, filtered and concentrated in vacuo. Purification by column chromatography eluting with 70% ethyl acetate/hexanes and then 10% methanol/ethyl acetate afforded EX-113C (100 mg, 0.22 mmol) as an off-white solid. M+H 439.

A suspension of EX-113C (90 mg, 0.20 mmol) in ethyl alcohol (10 mL) was cooled to 0° C. and hydrochloric acid (g) was bubbled through the solution for 10 min. The reaction was allowed to warm to room temperature, stirred for 4 hrs, and then concentrated in vacuo. The residue was dissolved in ethyl alcohol (10 mL), cooled to 0° C., treated with ammonia (10 mL, 2.0 M in ethyl alcohol), warmed to room temperature and stirred for 65 hrs. Removal of the solvent, purification by reverse phase HPLC (Waters, delta prep 3000), and lyophilizationyalization afforded the product (80 mg, 0.17 mmol) with an M+H of 473.

Example 114

A solution of 1-(tert-butoxycarbonylmethyl)-6-bromo-3-(N-cyclobutylamino)pyrazinone (500 mg, 1.4 mmol) and 3-cyanobenzeneboroaic acid (411 mg, 2.8 mmol) in toluene (7.0 mL), ethyl alcohol (5.0 mL), and sodium carbonate (4.4 mL, 2.0 N), was treated with tetrakis(triphenylphosphine)-palladium(0) (80 mg, 0.07 mmol). The mixture was deoxygenated three times (hi-vacuum/nitrogen purge), and heated to 75° C. for 18 hrs. The reaction was cooled to room temperature and water (75 mL) was added, extracted three times with ethyl acetate. The organic layer was washed with brine, dried over magnesium sulfate, and concentrated in vacuo. Purification by column chromatography, eluting with 10% ethyl acetate/hexanes and then with 25% ethyl acetate/hexanes afforded EX-114A (480 mg, 1.2 mmol) as a white solid with M+H of 381.

A solution of EX-114A (480 mg, 1.2 mmol) in methylene chloride (10 mL) was treated with trifluoroacetic acid (10 mL) for 18 hrs. The reaction was concentrated in vacuo, toluene added, concentrated, diethyl ether added, and the solution concentrated in vacuo to afford EX-114B (360 mg, 1.1 mmol) as a brown solid.

A solution of EX-114B (300 mg, 0.92 mmol) in methylene chloride (10 mL) was treated with 1-hydroxybenzotriazole (162 mg, 1.2 mmol), EDC (240 mg, 1.2 mmol), diusopropyl ethyl amine (0.24 mL) and 4-cyanobenzylamine (160 mg, 1.2 mmol) for 18 hrs. Water was added and then extracted 3 times with ethyl acetate. The organics were washed with brine, dried over magnesium sulfate, filtered and concentrated in vacuo. Purification by column chromatography eluting with 70% ethyl acetate/hexanes and then 10% methanol/ethyl acetate afforded EX-114C (210 mg, 0.48 mmol) as an off-white solid. M+H 439.

A suspension of EX-114C (150 mg, 0.34 mmol) in ethyl alcohol (10 mL) was cooled to 0° C. and hydrochloric acid (g) was bubbled through the solution for 10 min. The reaction was allowed to warm to room temperature, stirred for 18 hrs, and then concentrated in vacuo. The residue was dissolved in ethyl alcohol (10 mL), cooled to 0° C., treated with ammonia (10 mL, 2.0 M in ethyl alcohol), warmed to room temperature and stirred for 18 hrs. Removal of the solvent, purification by reverse phase HPLC (Waters, delta prep 3000), and lyophilizationyalization afforded the product (103 mg, 0.21 mmol) with an M+H of 473.

Pyrazinones, wherein a wide variety of R² substituents can be prepared by a metal catalyzed coupling reaction of a 6-bromo group in an appropriately substituted intermediate pyrazinone, can be prepared using the general procedures and processes shown in Scheme 11 and as illustrated below in specific Examples.

Example 115

Asolution of 2-chloropyrazine (26.12 g, 228.0 mmol) and cyclobutylamine (40.00 mL, 468.5 mmrol) was heated in a pressure reaction flask with stirring to 110° C. for 16 hours. The brown reaction was allowed to cool to room temperature and was diluted with water (750 mL). The aqueous solution was extracted with ethyl acetate (2×250 mL). The combined organic solutions were washed with water (1×250 mL), saturated NaHCO₃ (1×250 mL) and brine (2×250 mL). The organic solution was dried (MgSO₄), filtered, and concentrated. The crude product was purified by MPLC (20% ethyl acetate40% ethyl acetate/hexanes) to afford N-cyclobutylaminopyrazine (EX-115A) in 93% yield: ¹H NMR (300 MHz, DMSO) δ 7.97-7.96 (m, 1H) 7.82-7.79 (m, 2H), 5.12 (br s, 1H), 430-4.18 (m, 1H), 2.51-2.39 (m,2H), 1.97-1.73 (m, 4H); ¹³C NMR (75 MHz, DMSO) δ 149.3, 137.6, 128.3, 126.9, 42.2, 26.7, 10.7; HRMS (ES) calcd for C₈H₁₂N₃ 150.1031, found 150.0992.

A solution of EX-115A (30.36 g, 203.5 mmol) in 407.0 mL dimethyl sulfoxide and 10.0 mL water was added N-bromosuccinirnide (79.17 g, 444.8 mmol) over a 30 minute period with the temperature being kept below 15° C. with an ice water bath. After the addition was completed, the the ice bath was removed, the reaction mixture was allowed to warm to room temperature and stirred for 5 hours. The reaction mixture was then poured into 1.0 L of ice water, and the aqueous solution was extracted with ethyl acetate (5×250 mL). The combined organic solutions were washed with 5% Na₂CO₃ (2×250 mL), water (1×250 mL), and brine (1×250 mL). The organic solution was dried (MogSO₄), filtered, and concentrated to a yellow solid. Purification of the crude product by MPLC (20% ethyl acetate/hexanes) gave pure 2-(N-cyclobutyl)amino-3,5-dibromopyrazine (EX-115B) in 73% yield as a light yellow solid: ¹H NMR (400 MHz, CDCl₃) δ 7.98 (s, 1H), 5.31 (br d, J=4.8 Hz. 1H), 4.39-4.30 (m, 1H), 2.442.37 (m, 214), 1.95-1.85 (m, 2H), 1.83-1.70 (m, 2H); ¹C NMR (100 MHz, CDCl₃) δ 150.5, 143.0, 125.0. 121.6, 47.2,31.4, 15.4; HRMS (ES) calcd for C₈H₁₀Br₂N₃ 307.9221, found 307.9214.

A suspension of 2-(N-cyclobutylamino)-3,5-dibromopyrazine (EX-115B) (25.03 g, 81.53 mmol) in 500.0 mL water (0.16 M) was added potassium hydroxide (22.90 g, 408.1 mmol) in 480.0 mL water. The resulting suspension was heated to reflux for approximately 18 hours. The reaction rnixture was then added charcoal and refluxed for an additional 15 minutes. The mixture was then allowed to cool for 5 minutes and was filtered throuoh Celite 545. The filtrate was cooled in an ice bath and was acidified to a pH of approximately 5 (litmus paper) upon which a white precipitate forms. The precipitate was collected by filtration, washed twice with water, and dried under vacuum to afford pure 5-bromo-2-(N-cyclobutylamino)-3-hydroxypyrazine (EX-115C) in 80% yield: ¹H NMR (400 MHz, DMSO) δ 12.43 (s, 1H), 7.18 (br d,J=5.1 Hz, 1H), 6.87(s, 1H), 4.29-4.19 (m, 1H), 2.16-2.09 (m, 2H), 2.03-1.93 (m, 2H), 1.63-1.51 (m, 2H); ¹³C NMR (100 MHz, DMSO) δ 147.0, 144.2, 119.9, 41.3, 26.0, 10.8; HRMS (EI) calcd for C₈H₁₁BrN₃O 244.0085, found 244.0086.

To a suspension of CaH₂ (1.7246 g, 40.96 mmol) in 80.0 mL tetrahydrofuran (0.50 M) was added 5-bromo-2-(N-cyclobutylamino)-3-hydroxypyrazine (EX-11C) (5.0477 g, 20.68 mmol) in 50.0 mL tetrahydrofuran (0.41 M) dropwise via an addition funnel. The resulting suspension was heated to reflux for 30 minutes. To the mixture was then added a solution of tert-butyl bromoacetate (3.40 mL, 23.03 mmol) in tetrahydrofuran (2.3 M). Refluxing of the mixture was continued for 18 hours. The reaction mixture was allowed to cool to room temperature and cautiously poured in to a stirred ice water mixture (600.0 mL). The aqueous layer was extracted with ethyl acetate (4×250 mL). The combined organic solutions were washed with saturated NaHCO₃ (1×250 mL) and brine (2×250 mL). The organic solution was dried (MgSO₄), filtered, and concentrated. Purification of the crude product by MPLC (20% ethyl acetateihexanes) afforded pure 6-Bromo-1-t-butoxycarbonylmethyl-3-(N-cyclobutylamino)pyrazinone (EX-115D) in 72% yield as an off white solid: ¹H NMR (400 MHz, CDCl₃) δ 6.97 (s, 1H), 6.18 (br d, J=7.5 Hz, 1H), 4.79 (s, 2H). 4.39-4.29 (m, 1H), 2.41-2.34 (m, 2H), 1.96-1.86 (m, 2H), 1.79-1.68 (m, 2H) 1.45 (s, 9H); ¹³C NHR (100 MHz, CDCl₃) δ 165.8, 152.5, 149.0, 124.6, 105.1, 83.3, 49.7, 46.3,31.3, 28.2, 15.6; HRMS (EI) calcd for C₁₄H₂₁N₃O₃ 358.0766, found 358.0746.

A mixture of 6bromo-1-t-butoxycarbonylmethyl-3-(N-cyclobutylamino)pyrazinone (EX-115D) (5.0345 g, 14.05 mmol) and 4-nitrophenylboronic acid (2.5204 g, 15.10 mmol) in 47.0 mL THF (0.3M) was stirred for 10 minutes under an atmosphere of nitrogen. To the solution was then added 8.4 mL of 2.0 M sodium carbonate (16.8 mmol) followed by tertakis(triphenylphosphine)palladium(O) (1.6262 g, 10 mol %). The resulting mixture was allowed to stir for 5 minutes at room temperature, then heated to reflux for approximately 18 hours. The reaction mixture was allowed to cool to room temperature and was diluted with ethyl acetate (150.0 mL). The organic solution was washed with saturated NaHCO₃ (2×50 mL) and brine (2×50 mL). The organic solution was dried (MgSO₄), filtered, and concentrated. Purification of the crude product by trituration with ethyl ether afforded pure product (EX-115E) as a bright yellow solid in 53% yield: ¹H NMR (400 MHz, DMF-d₇) δ 8.50 (dd, J=1.9, 7.0 Hz, 2H), 7;87 (dd, J=1.9,7.0 Hz, 2H), 7.64 (d, J=8.1 Hz, 1H), 4.74-4.64 (m, 3H), 2.49-2.29 (m, 4H), 1.91-1.83 (m, 2H), 1.52 (s, 9H); ¹³C NMR (100 MHz, DMF-d₇) δ 167.4, 151.7, 150.2, 148.1, 139.9, 131.1, 127.2, 124.3, 123.6, 82.5, 48.2, 46.3. 30.8, 27.6, 15.3; HRMS (EI) calcd for C₂₀H₂₅N₄O₅ 401.1825, found 401.1846.

A solution of compound EX-115E (2.8013 g, 6.996 mmol) in 35.0 mL dry chloroform (0.2M) was added 5.40 mL trifluoroacetic acid (70.09 mmol) in one portion at room temperature. The resulting clear yellow solution was allowed to stir over night. The solvent was removed under reduced pressure and trituration from ethyl ether/hexanes afforded pure product (EX-115F) as a tan-solid in 97% yield: ¹H NMR (300 MHz, DMF-d₇) δ 13.81 (br s, 2H), 8.55 (d, J=8.9 Hz, 2H), 7.95 (d, J=8.9 Hz, 2H), 8.29 (d, J=7.5 Hz, 2H), 7.11 (s, 1H), 4.78-4.71 (m,3H), 2.60-2.38 (m, 4H), 1.99-1.87 (m, 2H); ¹³C NMR (75 MHz, DMF-d₇) δ 169.4, 151.9, 149.5, 148.3, 139.5, 131.2, 127.7, 124.4, 121.0, 47.8, 46.7, 30.5, 15.4; HRMS (EI) calcd for C₁₆H₁₇N₄O₅ 345.1199, found 345.1193.

To a solution of acid EX-115F (3.0451 g, 8.844mmol) in 60.0 mL dimethylformamide (0.15 M) was added N,N-diisopropylethylamine (15.0 mL, 86.11 mmol), N-hydroxybenzotriazole (1.4306 g, 10.59 mmol), and 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (2.0116 g, 210.49mmol). The resulting mixture was allowed to stir for 30 minutes. To the reaction mixture was then added 4-(N-benzyloxycarbonylaniidino)benzylanine hydrogen chloride salt (3.1106 g, 9.727 mmol) prepared in Example 33 in one portion. The resulting mixture was allowed to stir over night. The reaction mixture was diluted with ethyl acetate (250 mL), washed with 5% citric acid (2×50 mL), saturated NaHCO₃ (2×50 mL), and brine (2×50 mL). The orgaruc solution was dried (MgSO₄), filtered and concentrated. The crude reaction was purified by trituration (ethyl ether) to give pure product (EX-115G) in 43% yield: ¹H NMR (400 MHz, DMF-d₇) δ 9.68 (br s, 1H), 9.35 (br s, 1H), 8.89 (t, J=5.8 Hz, 1H), 8.47 (d, J=8.9 Hz, 2H), 8.26 (d, J=8.5 Hz, 2H), 7.96 (d, J=8.9 Hz, 2H), 7.67-7.50 (m, 8H), 7.04 (s, 1H), 539 (s, 2H), 4.79-4.64 (m, 5H), 2.52-2.30 (m, 4H), 1.97-1.86 (m, 2H); ¹³C NMR (100 MHz, DMF-d₇) δ 167.78, 167.49, 165.0, 151.9, 150.4, 148.0, 144.1, 140.2, 138.1, 133.8, 131.2, 128.87, 128.45, 128.31, 128.23, 127.8, 124.1, 123.6, 66.8, 49.0, 46.3, 42.9, 30.9, 15.4; HRMS (EI) calcd for C₃₂H₃₂N₇O₆ 610.2414, found 610.2454.

A solution of pyrazinone EX-115G (2.0113 g, 3.299 mmol) in 18.5 mL methanol/4 M HCl in dioxane (3:1, 0.1 M) was flushed with hydrogen oas. To the solution was then added 347.2 mo 10% Pd/C (wet), and the resulting suspension was allowed to stir at room temperature under an atmosphere of hydrogen (balloon pressure) for approximately 18 hours. The reaction mixture was filtered through a pad of Celite 545 and rinsed with methanol. The solvent was removed under reduced pressure. The crude product was purified by HPLC (20% acetonitnrle to 95% acetoaitrile/water/0.1% trifluoroacetic acid) to afford pure product in 74% yield: ¹H NMR (400 MHz, DMF-d₇) δ 10.20 (br s, 2H), 9.41 (br s, 2H), 8.76-8.72 (m, 1H), 7.91 (d, J=8.3 Hz, 2H), 7.45 (d, J=8.3 Hz, 2H), 7.09 (d, J=8.5 Hz, 2H), 6.78 (d, J=8.5 Hz, 2H), 6.70 (s, 1H), 4.56-4.47 (m, 5H), 2.40-232 (m, 2H), 2.29-2.19 (m, 2H), 1.79-1.67 (m, 2H); ¹³C NMR (100 MHz, DMF-d₇) δ 167.17, 167.11, 160.0, 159.7, 152.3, 149.2, 147.6, 146.1, 131.0, 130.7, 128.4, 127.84, 127.51, 120.2, 118.1, 115.83, 115.23, 114.7, 113.9, 48.5, 46.8, 42.4, 30.2, 15.1; HRMS (EI) calcd for C₂₄H₂₈N₇O₂ 446.2304, found 446.2322.

Example 116

By following the method of Example 115 and substituting 2-nitrophenylboronic acid for 4nitrophenylboronic acid, the title compound was prepared: ¹H NMR (400 MHz, DMF-d₇) δ 10.60 (br s, 1H), 10.53-10.44 (br m, 1H), 9.68 (br s, 1H), 9.16 (br s, 2H), 8.20-8.16 (m, 3H), 8.04-7.99 (m, 2H), 7.76-7.74 (m, 1H), 7.63-7.59 (m, 1H), 7.55-7.51 (m, 1H), 7.447.40 (m, 1H), 7.35-7.31 (m, 1H), 7.18 (s, 1H), 4.69-4.60 (m, 3H), 2.44 (m, 2H), 2.35-2.25 (m, 2H), 1.90-1.82 (m, 2H); HRMS (EI) calcd for C₂₄H₂₈N₇O₂ 446.2304, found 446.2301.

Example 117

By following the method of Example 115 and subsituting (3-methoxycarbonyl-5-ritrophenyl)boronic acid for 4nitrophenylboronic acid, the title compound was prepared: ¹H NMR (400 MHz, DMF-d₇) δ 10.43 (br s, 2H), 9.37 (br s, 2H), 8.68 (t, J=5.7 Hz, 1H), 7.88 (d, J=8.1 Hz, 2H), 7.46 (d, J=8.1 Hz, 2H), 7.39 (s, 1H), 7.22-7.17 (m, 2H), 6.94 (s, 1H), 6.70 (s, 1H), 5.54 (br s, 2H), 4.56-4.64 (m, 5H), 3.83 (s, 3H), 2.30-2.28 (m, 2H), 2.18-2.09 (m, 2H), 1.73-1.65 (m, 2H); ¹³C NMR (100 MHz, DMF-d₇) δ 167.3, 166.9, 151.8, 149.98, 149.63, 146.1, 1343, 131.3, 129.3, 128.4, 127.84, 127.49, 121.4, 119.6, 118.2, 115.0, 51.9, 48.3, 46.1, 42.5, 30.8, 15. 1; HRMS (EI) calcd for C₂₆H₃₀N₇O₄ 504.2359, found 504.2334

Example 118

By following the method of Example 115 and substituting (3-carboxy-5-ritrophenyl)boronic acid for 4-nitrophenylboronic acid, the title compouund was prepared: ¹H NMR (400 MHz, DMF-d₇) δ 10.22 (br s, 2H), 934 (br s, 2H), 8.66 8.63 (m, 1H), 7.99 (s, 2H), 7.86 (d, J=8.1 Hz, 2H), 7.47-7.42 (m, 3H), 7.31-7.25 (m, 2H), 6.90 (s, 1H), 6.71 (s, 1H), 4.56-4.46 (m, 5H), 2.31-2.29 (m, 2H), 2.19-2.09 (m, 2H), 1.74-1.65 (m, 2H); ¹³C NMR (100 MHz, DMF-d₇) δ 167.85, 167.29, 167.22, 151.8, 149.81, 149.43, 146.1, 134.0, 132.5, 129.5, 128.4, 127.82, 127.46, 120.7, 119.4, 118.6, 115.4,48.3, 46.2,42.5,30.7, 15.1; HRMS (EI) calcd for C₂₅H₂₈N₇O₄ 490.2203, found 490.2232.

Example 119

A mixture of methyl 3-nitrobenzoate (122 g, 674 mmol), silver sulphate (100 g, 320.7 mmol) and concentrated sulfuric acid (750 mL) was stirred mechanically and heated at 90° C. To this mixture was added bromine (37 mL), dropwise, over 2 h. The reaction was stirred another hour, cooled and filtered. The filtrate was mixed with 2 L water and 1 Kg crushed ice. The solid was filtered and dried to afford a mixture of the desired methyl ester and free acid hydrolysis product. The mixture was taken up into methanol (1 L), treated with 10 drops concentrated sulfuric acid and refluxed for 12 h. The reaction mixture was allowed to cool and the crystals that were deposited were collected and dried in a desiccator to afford 126 g (72% yield) of methyl 3-bromo-initrobenzoate (EX-119A): ¹H NMR (300 MHz, CDCl₃) δ 8.65 (s, 1H), 8.44 (s, 1H), 8.37 (s, 1H), 3.94 (s, 3 H).

To the product EX-119A (5.70 g, 22.0 mmol), dissolved in methanol (200 mL), was added hydrazine hydrate (1.20 mL of 98%, 24.2 mmol). The mixture was heated at reflux for 6 h. The mixture was allowed to cool and the crystals that were deposited were collected and dried in a desiccator to afford 2.85 g (50% yield) of the hydrazide EX-119B: ¹H NMR (300 MHz, DMSO-d₆) δ 10.2 (bs, 1H), 8.60 (s, 1H), 8.51 (s, 1H), 8.41 (s, 1H), 4.65 (bs, 2 H); LRMS (ESI, negative ion mode), [M−H]⁻=258 (for C₇H₆N₃⁷⁹BrO₃), 260 (for C₇H₆N₃⁸¹BrO₃).

The hydrazide product EX-119B (4.81 g, 18.6 mmol) was suspended in 2 N HCl (50. mL) and the mixture was cooled to 0° C. with rapid stirring. Sodium nitrite (3.00 g, 43.5 mmol) was added portion-wise over a 1 h period. The reaction was stirred another 1 h at 0° C. and filtered. The solid was dried in a dessicator to afford 3.60 g (72% yield) of the acyl azide EX-119C: ¹H NMR (300 MHz, DMSO-d₆) δ 8.70 (t, J=1.8 Hz, 1H), 8.53 (t, J=1.8 Hz, 1H), 8.42 (t, J=1.8 Hz, 1H).

The acyl azide product EX-119C (3.60 g, 13.3 mmol) was dissolved in tert-butanol (150 mL) and heated at reflux for 12 h. The reaction was cooled and concentrated to afford 4.00 g (95% crude yield) of the 3-nitro-5-(rert-butoxycarbonylamino)bromobenzene (EX-119D): ¹H NMR (300 MHz, CDCl₃) δ8.15 (s, 1H), 7.98 (overlapping s, 2 H), 6.93 (bs, 1H), 1.53 (s, 9 H); LRMS (ESI, negative ion mode), [M−H]⁻=315 (for C₁₁H₁₃N²⁷⁹BrO₄), 317 (for C₁₁H₁₃N²⁸¹BrO₄).

A 500 mL round bottom flask, containing a magnetic stir bar, was charged with 3-nitro-5-(tert-butoxycarbonylamnino)-bromobenzene (EX-119D) (12.9 g, 40.8 nmol), the commercially available bis(pinacolato)diboron (13.5 g, 53.1 mmol), anhydrous KOAc (12.0 g, 122 mmol) and dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium (II) dichloromethane adduct (2.99 g, 10 mole %). The rnixture was pump/purged (Argon) three times. To this mixture was added anhydrous, degassed dioxane (300 mL) by cannula transfer under a positive pressure of Argon. The resulting reaction mixture was heated at 65° C. for 12 h thereafter. The reaction was cooled, filtered through a medium frit, and concentrated. The residue was crystallized from hot hexanes to afford 13.1 g (88% yield) of 3-(tert-butoxycarbonyl)arnino-5-nitrophenylboronic acid pinacol ester (EX-119E) as a tan solid: ¹H NMR (300 MHz, CDCl₃) δ 8.48 (s, 1H), 8.22 (d, J=1.2 Hz, 1H), 7.87 (d, J=1.2 Hz, 1H), 6.88 (bs, 1H), 1.29 (s, 9 H), 1.21 (s, 12 H); LC-LRMS (ESI, negative ion mode) [M −H]−=281 (for boronic acid hydrolysis product).

By following the method of Example 115 and substituting 3-(tert-butoxycarbonyl)arino-5-nitrophenylboronic acid, pinacol ester (EX-119E) for 4 nitrophenylboronic acid, the compound was prepared: ¹H NMR (300 MHz, CD₃0D) δ 7.79 (d, J=8.1 Hz, 2H), 7.51 (d, J=8.1 Hz, 2H), 6.76 (s, 1H), 6.66 (s,2H), 4.60 (s, 2H). 4.51 (s, 2H), 4.35 (m, 1H), 2.52 (m, 2H), 2.31 (m, 2H), 1.93 (m, 2H); m/z (M+H) 461,4.

Example 120

Diethyl 4bromo-2,6-pyridinecarboxylate (EX-120A) was prepared from commercially available chelidarnic acid using the procedure of Takalo, H. and Kankare, J. Acta. Chemica Scandinavica 1987, B 41, 219.

To a solution of the bromo-diester product EX-120A (10.0 g, 33.2 mmol) in ethanol (200 mL) at room temperature was added hydrazine hydrate (1.61 mL of 98%, 32.5 mmol), and the resulting mixture was allowed to stir at room temperature for 16 h. At this time the solid was filtered and dried to afford 4.48 g (47% yield) of the desired hydrazide EX-120B as a white solid: ¹H NMR (CDCl₃) δ 9.08 (bs, 1H), 8.50 (d, J=1.8Hz, 1H), 8.38 (d, J=1.8Hz, 1H), 4.47 (q, J=7.2Hz, 2 H), 4.12 (bs, 2H), 1.45 (t, J=7.2 Hz, 3 H); HRMS (ESI) calc'd for C₉H₁₁N₃O₃⁷⁹Br 287.9984, found 287.9974, calc'd for C₉H₁₀N₃O₃⁸¹Br 289.9963, found 289.9982.

To a suspension of the hydrazide product EX-120B (1.0 g, 3.48 mmol) in 2 N HCl (30 mL), at 0-5° C., was added sodium nitrite (480 mg, 6.96 mmol) portion-wise over 1 h. The resulting solution was allowed to stir at 0-5° C. for an addition hour post-addition and filtered. The solid was dried thoroughly in a vacuum dessicator to afford 1.60 g (77% yield) of the desired acyl azide EX-120C: HRMS (ESI) calc'd for C₉H₈N₄O₃⁷⁹Br 298.9780, found 298.9788, calc'd for C₉H₈N₄O₃⁸ Br 300.9760, found 300.9774.

The acyl azide product EX-120C (1.60 g, 5.37 mmol) was dissolved in tert-butanol (50 mL) and the mixture was heated at reflux for 12 h. At this tim e LCMS indicated the reaction was complete. The mixture was concentrated to afford 1.77 g (96% yield) of the Boc-amino compound EX-120D as an orange oil: ¹H NMR (CDCl₃) δ 8.39 (d, J=1.6 Hz, 1H), 7.90 (d, J=1.6 Hz, 1H), 7.59 (bs, 1H), 4.44 (q, J=7.1 Hz, 2H), 1.51 (s, 9H), 1.41 (t, J=7.1 Hz, 3H); HRMS (ESI) calc'd for Cl₃H₁₈N₂O₄⁷⁹Br 345.0450, found 345.0404, calc'd for C₁₃H₁₈N₂O₄⁸¹Br 347.0431, found 347.0402.

To an oven-dried 100 mL round bottom flask was added the bromuide product EX-120D (586 mg, 1.70 mmol), bis(pinacolato)diboron (2.2 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium (II) dichloromethane adduct (64 mg, 5 mol %), and KOAc (500 mg, 5.10 mmol). This mixture was pump/purged three times with Argon, and dioxane (20 mL) was added by syringe. The mixture was heated to 80° C. for 5 h. LCMS at this time indicates only product. The mixture was cooled, diluted with ethyl acetate (100 mL), and washed with brine (3×75 mL). The layers were separated, and the organic solution was dried (MgSO₄), filtered, and concentrated. The residue was purified by radial chromatography (SiO₂, 10/1 hexanes-ethyl acetate) to afford 600 mg (90% yield) of pure boronate EX-120E: ¹H NMR (CDCl₃) δ 8.44 (s, 1H), 8.07 (s, 1H), 7.61 (bs, 1H), 4.42 (q, J=7.0 Hz, 2H), 1.40 (t, J=7.0 Hz, 3H). 1.33 (s, 9H), 1.25 (s, 12H); LC-LRMS (ESI, negative ion mode) [M−1]³⁰=309 (for boronic acid hydrolysis product).

By following the method of Example 115 and substituting 2-(tert-butoxycarbonyl)-6-ethoxycarbonylipyridineboronic acid, pinacol ester (EX-120E) for 4-nitrophenylboronic acid, the product was isolated as the dihydrochloride: ¹H NMR (300 MHz, DMSO-d₆) δ 9.36 (bs, 1H), 9.15 (bs, 1H), 8.89 (t, J=6.0 Hz, 1H), 7.76 (d, J=8.4 Hz, 2H), 7.40 (d, J=8.4 Hz, 2H), 7.35 (s, 1H), 6.98 (s, 1H), 6.84 (s, 1H), 4.32-4.51 (complex m, 4H), 3.75-3.90 (complex m, 1H), 2.05-2.28 (m, 4H), 1.58-1.72 (m, 2H); HEMS (ESI) calc'd for C₂₄H₂₇N₈O₄ 491.2155, found 491.2185.

Example 121

By following the method of Example 115 and substituting isopropylarine for cyclobutylaamine and 3-(tert-butoxycarbonyl)amino-5-nitrophenylboronic acid, pinacol ester for 4-nitrophenylboronic acid, the compound was prepared: ¹H NMR (300 MHz, CD₃OD) δ 7.82 (d, J=8.1 Hz, 2H), 7.54-7.50 (m, 3H), 7.43 (s, 2H), 6.78 (s, 1H), 4.66 (s, 2H), 4.51 (s, 2H), 4.204.11 (m, 1H), 1.44 (d, J=6.2 Hz, 6H); C NMR (75 MHz, CD₃OD) δ 167.5, 166.9, 152.5, 146.2, 145.3, 128.12, 128.00, 127.0, 108.7, 46.0, 42.6, 203. MS (m/z+1) of 449.

Example 122

By following, the method of Example 115, procedures disclosed herein, and substituting isopropylamine for cyclobutylamine and 3-(tert-butoxycarbonyl)amino-5-nitrophenylboronic acid, pinacol ester for 4-nitrophenylbronic acid, the title compound can be prepared.

Example 123

By following the method of Example 115 and substituting 2,6-dichloropyrazine for 2-chloropyrazine, isopropylamine for cyclobutylamine and (3-carboxy-5-nitrophenyl)boronic acid for 4nitrophenylboronic acid, the compound was prepared ¹H NMR (300 MHz CD₃OD) δ 8.12-8.19 (m, 2H), 7.71-7.78 (m, 3H), 7.4-7.49 (m, 2H), 4.48-4.63 (m, 2H), 4.28-4.42 (m, 2H), 4.18-4.26 (m, 1H), 1.33 (d, J=1.5 Hz, 3H), 1.30 (d, J=1.5 Hz, 3H); HRMS (EI) calcd for C₂₄H₂₇ClN₇O₄ 512.1813, found 512.1819.

Example 124

By following the method of Example 115 and substituting 2,6-5-dichloropyrazine for 2-chloropyrazine, isopropylamine for cyclobutylamine and 3-nitrophenylboronic acid for 4-nitrophenylboronic acid, the compound was prepared: ¹H NMR (300 MHz CD₃OD) 67.80 (s, 1H), 7.77 (s, 1H), 7.59-7.40 (m, 4H), 7.37-7.28 (m, 2H), 4.52-4.33 (m, 4H), 4.20 (sept, J=6.6 Hz, 1H), 130 (d, J=6.6 Hz, 6H). MS (m/z+1) of 513.

Example 125

Using the Procedures of Scheme 1, Scheme 2, and Examples disclosed herein, the compound was prepared and showed MS (m/z+1) of 527.

Example 126

Using the Procedures of Scheme 1, Scheme 2, and Examples disclosed herein, the compound was prepared: ¹H NMR (300 MHz, CD₃OD) 1.78-1.90 (m, 2H), 2.05-2.22 (m, 2H), 2.38-2.50 (m, 2H), 4.29-4.64 (m, 5H), 7.43-7.52 (m, 2H), 7.69-7.81 (m, 3H), 8.10-8.21 (m, 2H). MS (m/z-+1) of 525.

Example 127

Using the Procedures of Scheme 1, Scheme 2, and Examples disclosed herein, the compound was prepared: ¹H NMR (300 MHz, CD₃OD) δ 1.79-1.85 (m, 2H), 2.07-2.14 (m, 2H), 2.37-2.51 (m, 2H), 4.38-4.53 (m, 5H), 7.03-7.09 (m, 1H), 7.40-7.80 (m, 6H). MS (m/z+1) of 538.

Example 128

Experimental Procedure for the Robotic Parallel Synthesis of a Series of R² (3-Amino 5-(N-SubstitutedAmidocarbonyl)Phenyl) Pyrazinones

Using a portion of the General Robotics and Experimental Procedure for the Robotic Parallel Synthesis described herein, a parallel array reaction block containing 4OmL vials, each reaction vessel was charged with the carboxylic. acid,

constituted in dichloromethane (2.0 mL). A stock solution of 1-hydroxybenzotriazole in dichloromethane and N-Methyl Morpholine (2 mL per well DCM/2.2 mL per well NMM(13.5 mg per well HOBT) were added to each vessel. Each reaction vessel was then charged with 200 mg of carbodiimide resin R-2 (1.0 meq/g resin). The reaction mixtures were agitated on a Labline benchtop orbital shaker at 150 RPM overnight at ambient temperature. An amine corresponding the desired amide product was placed in dichloromethane (0.2 M, 1.0 equiv.) and then added to each reaction vessel and the reaction mixtures were agitated for another 2-3 h. Polyamine polymer R-1 (0.2 grams/2.3 meq. N/g resin) and aldehyde resin R-3 (0.2 arams/2.Omeq per gram) and 2 mL of dichloromethane were added to the reaction mixture in each vessel, and the mixtures were agitated for 2 h. Each reaction vessel was then opened, and the desired solution phase products were separated from the insoluble byproducts by filtration and collected in individual conical vials. Each reaction vessel was rinsed three times with dichloromethane(1 mL), and the rinses were also collected. The solutions obtained were then evaporated to dryness under a nitrogen stream. The samples were then redissolved in 2.5 mL DCM and 0.5 mL TFA for 2 hours, followed by drying under a nitrogen stream, and finally followed by drying under a vacuum overniigbt. The samples were wei ghed to afford the desired products as oils or solids. The Examples prepared are summarized in Example Table 1.

Example Table 1 Additional Substituted Pyrazinones of the Present Invention Prepared based on the Procedures of Scheme 9, Scheme 10, Scheme 11, and Example 128

			Molecular
Ex.			Weight
No.	Substituent-1	Substituent-2	(m/z + 1)
128-1	hydrogen	hydrogen	510.98
128-2	methyl	benzyl	615.13
128-3	hydrogen	1-phenylethyl	615.13
128-4	hydrogen	2-phenyl-2-propyl	629.15
128-5	hydrogen	2,4-dichlorobenzyl	669.99
128-6	hydrogen	3,5-bis-trifluoromethylbenzyl	737.09
128-7	hydrogen	4-tert-butylbenzyl	657.2
128-8	hydrogen	4-bromobenzyl	679.99
128-9	hydrogen	benzyl	601.1
128-10	hydrogen	2-chlorobenzyl	635.54
128-11	hydrogen	2-trifluoromethylbenzyl	669.10
128-12	hydrogen	3-fluorobenzyl	619.09
128-13	hydrogen	3-trifluoromethylbenzyl	669.10
128-14	hydrogen	isobutyl	567.08
128-15	hydrogen	cyclobutyl	565.07
128-16	hydrogen	cyclopentyl	579.09
128-17	hydrogen	cycloheptyl	607.15
128-18	hydrogen	3-pyridylmethyl	602.09
128-19	hydrogen	2-pyridylmethyl	602.09
128-20	hydrogen	2-(4-methoxyphenyl)ethyl	645.15
128-21	hydrogen	3-phenylpropyl	629.15
128-22	hydrogen	2,2-diphenylethyl	691.22
128-23	hydrogen	2-naphthylmethyl	651.16
128-24	hydrogen	1,2,3,4-tetrahydronaphth-2-yl	641.16

Example 129

Using the procedures of Scheme 1, Scheme 2, and the Examples herein with suitable reagents, starting materials, and intermediates, 2-{5chloro-6-(3-nitrophenyl)-3-[N-(2-methoxycarbonylpropyl)amino]-2-oxohydropyrazinyl}acetic acid (EX-129A) was prepared from 2-{3,5-dichloro-6-(3-nitrophenyl)-2-oxohydropyrazinyl}acetic acid by using the methyl ester of 3-amino-2-methylpropionate hydrochloride as the B-A-NH₂ reactant along with an equivalent of a non-nucleophilic. The nitro group of EX-129A was hydrogenated to amine as in Example 27 to give EX-129B. EX-129B was reacted with the protected amidine, 4-(N-benzyloxycarbonylamidino)benzylaraine hydrogen chloride salt, as described in Example 44, to give the protected product EX-129C.

EX-129C was dissolved in methanol to make approximately a 0.1 M solution. Dissolved in a minimal amount of water, 5.0 eq. of lithium hydroxide monohydrate was added dropwise to the solution turning it cloudy, and the reaction mixture stirred for 24 h. at room teruperature. Dropwise, 2 N HCl was added to neutralize the reaction. The methanol and water were concentrated, and the product was purified by reverse phase HPLC: 10 to 50% gradient organic with 0.1% TFA buffer. The product showed a ¹H NMR (300 MHz, CD₃OD) δ 1.35 (d, 3H, 6.9 Hz), 2.68 (ABdq, 2H, Δv=42.6 Hz, J_AB=15.9), 4.31-4.59 (m, 5H), 7.42-7.80 (8H); LRMS m/z 512.1 (M⁺+H).

Additional pyrazinones havina a carboxylic acid substituent in the B-A-group were prepared as described in Example 129 by using the appropriate amino acid methyl ester hydrochloride in place of methyl ester of 3-amino-2-methylpropionate hydrochloride. Additional examples of these pryazinones are summarized in Example Table 2.

Example Table 2. Additional Substituted Pyrazinones Having a Carboxylic Acid Substituent in the B-A-Group

Ex.
No.	B-A	Spectral Characterization Data
130	1-carboxy-2-	1H NMR (300 MHz, CD3OD) δ1.26 (d, 3H, J =
	propyl	7.2 Hz), 2.87-2.95 (m, 1H), 3.55-3.70 (m, 2H),
		4.34-4.53 (m, 4H), 7.36-7.80 (m, 8H).;
		LRMS m/z 512.2 (M+ + H).
131	2-carboxyethyl	1H NMR (300 MHz, CD3OD) δ 2.87-3.14 (m,
		2H), 4.32-4.54 (m, 4H), 5.57 (t, 1H, J = 6.6 Hz),
		7.24-7.79 (m, 13H); LRMS m/z 574.2 (M+ + H).
132	carboxymethyl	1H NMR (300 MHz, CD3OD) δ 2.70 (t, 2H, J =
		6.6 Hz), 3.72 (t, 2H, J = 6.6 Hz), 4.38-4.56
		(m, 4H), 7.37-7.80 (m, 8H); LRMS m/z 498.2
		(M+ + H).
133	2-carboxy-1-	1H NMR (300 MHz, CD3OD) δ 4.19 (s, 2H),
	phenylethyl	4.34-4.59 (m, 4H), 7.42-7.80 (m, 8H);
		LRMS m/z 484.1 (M+ + H).
134	(R)-1-	1H NMR (300 MHz, CD3OD) δ 1.57 (d, 3H, J =
	carboxyethyl	6.0 Hz), 4.32-4.63 (m, 5H), 7.41-7.80 (m, 8H);
		LRMS m/z 4.98.4 (M+ + H).
135	(S)-1-	1H NMR (300 MHz, CD3OD) δ 1.58 (d, 3H, J =
	carboxyethyl	7.2 Hz), 4.37-4.62 (m, 5H), 7.40-7.80 (m, 8H);
		LRMS m/z 498.1 (M+ + H).

Example 136

To a solution of 2-{5-chloro-3-(N-cyclobutylarrino)-&(3-nitrophenyl)-2-oxohydropyrazinyl}acetic acid (0.5 g, 13 mmol) in THF (15 mL) at 0° C. was added BH₃.THF (1.0 M in THF, 4.0 mL, 4.0 mmol) via syringe. The reaction mixture was allowed to warm to room temperature and stirred for 12 hours. The reaction mixture was poured into ice water. The aqueous mixture was extracted with ethyl acetate (2×25 mL). The organic extracts were washed with bicarbonate (1×25 mL) and brine (1×25 mL). The organic layer was dried (Na₂SO₄) and the solvent removed to give a yellow foam (0.39 g), which after chromatography (30% 70% EtOAc/Hexanes) gave 0.24 g of a yellow foam (EX-136A): m/z+1=365.

To a solution of alcohol EX-136A (0.19 g, 0.5 mmol) in dichworomethane (10 mL) at 0° C. was added triethylamine (0.087 mL, 0.6 mmol) and methanesulfonyl chloride (0.04 mL, 0.55 mmol). The reaction was stirred at room temperature for 1 h and then diluted with water and dichloromethane. The layers were separated and the organic layer washed with brine (1×20 mL) and dried (Na₂SO₄). The solvent was removed to give a yellow oil EX-136B, which was taken on to the next step without purification: m/z+1=443.

To a solution of mesylate EX-136B (0.21 g, 0.47 mmol) in DMF/water (5 mL/5 drops) at room temperature was added sodium azide. After 12 h, the reaction was diluted with ether and water. The layers were separated, and the organic layer washed with brine (1×10 mL) and dried (Na₂SO₄). The solvent wvas removed to give a yellow oil EX-136C, which was taken on to the next step without purification: m/z+1=390.

To a solution of azide EX-136C (1.10 g, 2.8 mmol) in THF/H₂O (20 mL/10 drops) was added Ph₃P at room temperature. The reaction was stirred overnight and then diluted with water and dichloromethane. The layers were separated and the organic layer washed with bicarbonate (1×25 mL) and brine (1×25 mL). The organic extract was dried (Na₂SO₄), and the solvent removed to give an orange oil, which after column chromatography (5% MeOH in dichloromethane) gave the desired product EX-136D as a yellow oil (0.95 g): m/z+1=364.

To a solution of acid, 4-(N-benzyloxycarbonylamidino)benzoic acid, (0.45 g, 1.2 mmol) in DMF (20 mL) was added EDC (0.37 g, 1.9 mmol) and HOBt (0.26 g, 1.9 mmol) at room temperature. After 15 min, the amine EX-136D (0.45 g, 1.2 mmol) in DMF/triethylamine (10 mL/0.67 mL, 4.8 mmoL) was added via canula.

The reaction was stirred overnight at room termperature. The reaction was diluted with water and ether. The layers were separated, and the organic layer washed with bicarbonate (1×25 mL) and brine (1×25 mL). The organic extract was dried (Na,₂O₄), and the solvent removed to give an oil, which after chromatography (70% ethyl acetate in hexanes) gave the product as a yellow oil EX-136E (0.67 g): m/z+1=644.

To a solution of EX-136E (0.67 g, 1.0 mmol) in ethanol (30 mL) was added HCl (2.0 M solution in ether, 2 mL) and 10% Pd/C (0.2 g). The reaction was placed on a Parr apparatus and shaken at 40 psi for 2 hours. The reaction mixture was filtered through a pad of celite, and the solvent removed to give an oil (0.48 g). To a solution of the oil in ether was added 2.0 M HCl in ether to give a precipitate. The precipitate was filtered to give a gummy residue, which was dissolved in water and lyophilized to give the product as an HCl salt (0.45 g): m/z+1=480.

Example 137

To a solution of amine EX-136D (0.42 g, 1.1 mmol) in dichioromethane at room temperature was added TEA (0.31 mL, 2.2 mmol) and 4-cyanobenzenesulfonyl chloride (0.23 g, 1.1 mmoL). After stirring at room temperature, the reaction was diluted with dichloromethane and bicarbonate. The layers were separated, and the organic layer was washed with brine. The organic extract was dried (Na₂SO₄) and solvent removed to give (0.56 g) of a yellow solid EX-137A: m/z+1=529.

To a solution of EX-137A (0.56 g, 1.0 mmol) in THF (20 mL) at 0° C. was added LiHMDS (1.0 M in THF, 5.3 mL, 5.0 mmol) dropwise. The reaction was allowed to warm to room temperature and stirred for 1 h. The reaction mixture was diluted with water (10 mL) and stirred for 30 min. The crude amidine EX-137B was taken onto the next step without purification: m/Z+1=546.

To the crude amidine EX-137B in THF/H₂O (8:2) was added Na₂CO₃ (0.37 g, 4.0 mmol) and Cbz-Cl (0.31 mL, 2.2 mmol) at 0° C. The reaction was stirred vigorously for 30 minutes and then poured into a seperatory funnel. The layers were separated, and the aqueous layer was extracted with ethyl acetate (2×25 mL). The organic extracts were combined and washed with brine (1×25 mL) and bicarbonate (1×25 mL). The organic extract was dried (Na₂SO₄), and the solvent removed to give a yellow solid EX-137C (0.49 g): m/z+1=680.

To a solution of EX-137C (0.49 g, 0.72 mmol) in 40 mL of ethanol in a Parr bottle was added 10% Pd/C (0.2 g) and HCl (2.0 M solution in ether, 0.75 mL 1.44mmol). The reaction was shaken for 2 hours at 40 psi. The reaction mixture was filtered through celite and washed with methanol. The solvent was removed to give the crude product as an oil. To the oil was added ether and 2.0 M HCl in ether to give a white precipitate that was filtered and washed with ether. The hygroscopic solid was dissolved in water and lyophilized to give the product as a HCl salt (0.37 g): m/z+1=516.

Example 138

To a stirred solution of 10.0 g of (4-cyanophenyl)boronic acid (68 mmol) in 350 mL of THF was added 14.7 g of 3-nitrobenzyl bromide (68 mmol), 1.0 g of Pd(PPh₃)₄, and 30 mL of 2N NA₂CO₃ aqueous solution. The mixture was stirred at room temperature for overnight. The mixture was concentrated in vacuo, redissolved in ethyl acetate, and washed with brine. The ethyl acetate layer was dried over MgSO₄ and concentrated in vacuo. The crude was purified on silica gel with 10% ethyl acetate/hexane to give 12.5 g of the product EX-138A (77%).

5.0 g of the nitro compound EX-138A (21 mmol) was stirred in 150 mL of 10% HCl EtOF/H₂O solution at refluxing temperature for 5 hr. The mixture was cooled to room temperature and concentrated in vacuo. The crude product was purified on silica gel with 30% ethyl acetate/hexane to give 3.2 g of the pure product EX-138B (73%).

To a stirred solution of 2.0 g of the arnino compound EX-138B (9.6 mmol), 1.5 g of 3-nitrobenzaldehyde (9.8 mmol), 50 mg of Yb(OTf)₃, and 5 g of 4A molecular sieves in 50 mL of CH₂Cl₂ was added 1.0 g of TMSCN (10 mmol) dropwise. The mixture was stirred at room temperature overnight. The mixture was concentrated in vacuo and redissolved in ethyl acetate. The ethyl acetate solution was washed with brine, dried over MgSO₄, and concentrated in vacuo. The product was purified on silica gel with 10% ethyl acetate/hexane to give 2.8 g of the pure product EX-138C (79%).

To a stirred solution of 2.5 g of the cyano amine EX-138C (6.8 mmol) in 70 mL of 1,2-dichlorobenzene was added 3.5 g of oxalyl chloride (27.5 mmol). The mixture was stirred at 100° C. for overnight. The reaction was allowed to cool to room temperature and concentrated in hi oh vacuum. The product was purified on silica gel with 20% ethyl acetate/hexane to give 1.6 g of the pure product EX-138D (48%).

The solution of 1.5 g of the dichloro pyrazinone EX-138D (3.1 mmol) and 1.1 g of the cyclobutylamine (15.5 mmol) in 30 mL of ethyl acetate was stirred at 70° C. for 3 hr. The reaction mixture was concentrated in vacuo and redissolved in ethyl acetate. The ethyl acetate layer was washed with brine, dried over MgSO₄, and concentrated in vacuo. The crude product was purified with 25% ethyl acetate/hexane to give 1.57 g of the pure product EX-138E (99%).

1.7 g of the cyano pyrazinone EX-138E (3.3 mmol), 0.4 g of NH₂OH.HCl (5.8 mmol), and 0.9 g of K₂CO₃ (6.5 mmol) were stirred in 30 mL of dry ethanol overnight. The reaction mixture was concentrated and redissolved in ethyl acetate. The ethyl acetate solution was washed with brine, dried over MgSO₄, and concentrated in vacuo. The crude was purified on silica gel with 30% ethyl acetate/hexane to give 1.1 g of the pure product EX-138F (61%).

0.5 g of the hydroxyamidine compound EX-138F (0.9 mmol), 0.16 g of carbonyl diimidazole (1.0 mmol), and 0.19 g of triethylamine (1.9 mmol) were stirred in refluxing THF (10 mL) for overnight. The mixture was concentrated in vacuo and redissolved in ethyl acetate. The ethyl acetate layer was washed with brine, dried over MgSO₄, and concentrated in vacuo. The crude was purified on silica gel with 25% ethyl acetate/hexane to give 0.4 g of the pure product EX-138G (80%).

0.3 g of the carboxylate amidine (0.5 mmol) and 50 mg of Pd/C in 10 mL of ethanol were shaken under 40 PSI H₂ for 5 hr. The reaction mixture was filtered to remove Pd/C, and the solution was concentrated in vacuo. The crude was purified on silica gel with 60% ethyl acetate/hexane to afford 0.18 g of the pure product: MS (M+H): 499.14.

Example 139

To a solution of EX-136B (0.97 g, 2.0 mmol) in acetonitrile (30 mL) was added Nal (0.12 g, 0.8 mmol), K₂CO₃ (1.21 g, 8.0 mmol) and amine (0.89 g, 2.2 mmol). The reaction was heated at 80 oC for 16 h and the solvent removed to give an oil, which was taken up in ethyl acetate and water. The mixture was poured into a seperatory funnel and the layers separated. The organic layer was washed with brine and dried (Na₂SO₄). The solvent was removed to give an oil, which after chromatography (2% MeOH-10% MeOH in dichloromethane) gave 0.68 g of product EX-139A: m/z+1=629.

To a solution of EX-139A (0.60 g, 0.95 mmol) in DMF (15 mL) at room temperature was added SnCl₂.H₂O. The reaction was stirred at room temperature overnight. The reaction was poured into ice water, 10 M NaOH and dichloromethane. The layers were separated, and the organic layer washed with 10% KF and water. The organic extracts were collected and dried (Na₂SO₄). The solvent was removed to give a foam, which was purified by chromatography (dichloromethane-10% MeOH/dichloromethane) to give the desired product EX-139B (0.21g): m/z+1=600.

To a round bottom containing EX-139B (0.56 g, 0.93 mmol) was added 30% HBr/AcOH (20 mL). The reaction was stirred at room temperature for 18 hours. The reaction was diluted with ether to give a precipitate, which was filtered and washed with ether. The crude precipitate was purified by RP-HPLC to give the desired product as a TFA salt (0.31 g). The TFA salt was converted to the HCl salt by passing through Biorad AG2-X8 ion exchange resin, followed by lyophilization to give the final product as the HCl salt (0.28 g): m/z+1=466.

Example 140

To a stirred solution of NaH (60% dispersion, 0.22 g, 2.75 mmole) in THF (2 mL) was added α-bromo-p-tolunitrile drop wise (0.5 g, 2.55 mmole) in THF (2 ml). Added to the mixture was EX-136A (1.0 g, 2.75 mmole) in THF (1 mL). After stirring at room temperature for 18 hr the reaction was concentrated in vacuo and an aqueous work up performed. The residue was chromatographed by MPLC (1% MeOH/CH₂Cl₂) and triturated with ether to yield EX-140A as an orange solid (405 mg, 30%): HPLC/LRMS>99%, (M+H)⁺ 480; HRMS (EI) calcd for C₂₄H₂₃ClN₅O₄ 480.1439, found 480.1456.

A stirred mixture of EX-140A (405 mg, 0.845 mmoles), potassium carbonate (257 mg, 1.86 mmoles), and hydroxylamine hydrochloride (211 mg, 3.05 mmoles) in water/ethanol (7.4mL, ratio 1:2.6) was refluxed for 3 hrs, cooled to room temperature, concentrated in vacuo, and an aqueous work up carried out. Residue chromatographed on MPLC (50% ethyl acetate/hexane) giving the product EX-140B as a orange glassy solid (192.4 mg, 44.4%); HPLC/LRMS 98%, (M+H)⁺ 513; HRMS (EI) calcd for C₂₄H₂₆ClN₆O₅ 513.1653, found 513.1698.

To a cooled solution of EX-140B (0.5 g, 0.976 mmole) in THF (25 mL) was added 2.5N NaOH (3.91 mL, 9.77 mmole). Added drop wise then was ethyl chloroformate (0.233 mL, 2.4 mmole) at 0-5° C., and the reaction mixture was allowed to warm to room temperature with stirring for 18 hrs. The aqueous was drawn off, organic dried over sodium sulfate, filtered, and concentrated in vacuo.

The residue was triturated with diethyl ether to yield product EX-140C (358 mg, 68%); HPLC/LRMS 94%, (M+H)⁺ 539; HRMS (EI) calcd for C₂₅H₂₄ClN₆O, 539.1446, found 539.1468.

To a mixture of EX-140C (100 mg, 0.185 mmole) and iron powder (42 mg, 0.754 mmole) in water/ethanol (18 mL, ratio 50/50) was added a few drops of concentrated hydrochloric acid. The resulting mixture was stirred at 75° C. for 3 hr. The mixture was then filtered through celite, and solvent removed in vacou. The residue was triturated with diethyl ether to yield the product as a white solid in quantitative yield: ¹H NMR (300MHz, DMF d,) δ 10.30-9.80 (br m, 3H, H₂N-C═NH), 8.18 (m, 2H), 7.81 (m, 1H), 7.64 (m, 2H), 7.35 (m, 1H), 6.98 (m, 1H), 6.88 (br s, 1H), 6.74 (m, 1H), 5.59 (br s, 2H), 4.69 (br s, 3H), 4.17 (br s, 2H), 3.82 (br s, 2H), 2.55-2.35 (m, 4H), 1.91 (br s, 2H); ¹³C NMR (75-MHz, DMF-d,) δ 167.28, 151.15, 149.99, 148.61, 145.50, 133.46, 129.75, 128.65, 127.95, 127.75, 125.39, 124.96, 118.69, 116.69, 11532, 74.82, 67.24,46.31,45.72, 15.35; HPLC/LRMS 99%, (M+H)⁺ 467; HRMS (EI) calcd for C₂₄H₂₈ClN₆O₂ 467.1962, found 467.1966.

Example 141

A solution of 2-{5-chloro-3-(N-cyclobutylamino)-6-(3-mtrophenyl)-2-oxohydropyrazinyl}acetic acid (1.0 g, 2.6 mmol) in methylene chloride (20 mL) was treated with 1-hydroxybenzotriazole (432 mg, 3.2 mmol), EDC (613 mg, 3.2 mmol), and 2 (423 mg, 3.2 mmol) and the reaction allowed to stir for 18 hr. Water was then added and extracted 3× with methylene chloride. The organics were washed once with saturated sodium carbonate, once with 1 N hydrochloric acid and once with brine, dried over magnesium sulfate, filtered and concentrated in-vacuo to afford EX-141A (960 mg, 1.9 mmol) as an orange foam.

A solution of EX-141A (500 mg, 1.0 mmol) in ethyl alcohol (20.0 mL) and concentrated hydrochloric acid (5 mL) was treated with tin(II) chloride dihydrate (1.1 g, 5.0 mmol) and heated to 65° C. for 1.5 hrs. The mixture was cooled to room temperature and poured into water (100 mL), 1 N potassium hydroxide was added to make basic, and then extracted 3 times with ethyl acetate. The organic layer was dried over magnesium sulfate, filtered and concentrated in vacuo to afford EX-141B (425 mg, 0.92 mmol) as an orange solid: M+H 463.

A suspension of EX-141B (200 mg, 0.43 mmol) in ethyl alcohol (10 mL) was cooled to 0° C. and hydrooen chloride was bubbled through the solution for 10 min. The reaction was allowed to warm to room temperature, stirred for 2 hrs, and then concentrated in vacuo. The residue was dissolved in ethyl alcohol (5.0 mL), cooled to 0° C., treated with ammonia (5.0 mL, 2.0 M in ethyl alcohol), warmed to room temperature and stirred for 18 hrs. The reaction mixture was evaporated to dryness, purified by reverse phase HPLC (Waters, delta prep 3000), and lyophilized to give the product (150 mg, 031 mmol): M+H 480.

Example 142

To a solution of 2-{5-chloro-3-(N-cyclobutylamino)-6-(3-aminophenyl)-2-oxohydropyrazinyl}acetic acid (0.5 g, 1.4 mmoL) in THF/H₂O (16mL:4 mL) at room temperature was added Na₂CO₃ (0.29 g, 3.08 mmol) and Boc₂O (0.37 g, 1.7 mmol). After stirring overnight at room temperature the pH of the reaction was adjusted to 4 and then poured into ethyl acetate and water. The layers were separated and the organic layer washed with brine. The organic extract was dried (Na₂SO₄) and the solvent removed to give an oil EX-142A, which was used without further purification (0.6 g): m/z+1=449.

To a solution of the boc-acid EX-142A (0.6 g, 1.3 mmol) in methanol:benzene (2 mL:8 mL) was added (trimethyl)diazomethane (0.8 mL, 1.7 mmol) at room temperature. After stirring at room temperature, the solvent was removed to give the desired product EX-142B without further purification (0.6 g): m/z+1=463.

To a solution of 4-cyanophenylethyne (0.47 g, 3.5 mmol) in THF (15 mL) at −78° C. was added n-BuLi (2.23 mL, 4.4 mmol). After stirring at −78° C. for 15 min, EX-142B was added in THF (10 mL) at −78° C. via canula. The reaction was allowed to warmn to room temperature over 2 hours. The reaction was quenched by addition of ammonium chloride and then diluted with ether. The layers were separated, and the oroanic layer dried (Na₂SO₄). The solvent was removed, and the residue purified by chromatography (20% ethyl acetate 40% ethyl acetate/hexanes) to give the desired product EX-142C (0.35 g): m/z+=558.

To a solution of EX-142C (0.10 g,0.18 mmol) in THF (15 mL) in a Parr bottle was added 10% Pd/C (0.1 g). The reaction was shaken on a Parr apparatus for 2 hours at 30 psi. The reaction was filtered through celite and washed with ethyl acetate. The solvent was removed to give the product EX-142D as a foam (0.08 g): m/z+1=562.

To a solution of EX-142D (0.33 g, 0.58 mnmol) in dioxane (10 mL) was added 4.0 M HCl in dioxane (15 mL). After 2 hours, the solvent was removed, and the residue triturated with ether to give a precipitate EX-142E which was filtered and used in the next step (0.25 g): m/z+1=462.

To a solution of EX-142E (0.25 g, 0.5 mmol) in dry ethanol (15 mL) was bubbled HCl gas for 5 minutes at 0° C. The reaction was allowed to warm to room temperature and stirred for 3 hours. The solvent was removed to give a yellow oil EX-142F which was used in the next step (0.29 g): m/z+1=508.

To a solution of EX-142F (0.29 g, 0.5 mmoL) in methanol (5 mL) was added 2.0M NH3 in methanol (15 mL). Ammonia gas was bubbled through the reaction mixture for 5 minutes. After stirring overnight the solvent was removed to give a yellowish residue. The residue was dissolved in water and purified by RP-HPLC to give the compound as a TFA salt (0.17 g): m/z+1=479.

Example 143

To 4-cyanophenacyl bromide (5.79 g, 25.8 mmol) in 100 ml of toluene was added triphenylphosphine (7.12 g , 27.1 mmol) and the mixture was stirred overnight. The resulting solid was collected by vacuum filtration and washed with ethyl ether to give 12.1 g of an off white solid EX-143A (96% yield): ml (M+H) 406.

To (4-Cyanophenacyl)triphenylphosphonium bromide (EX-143A) (12.1 g, 24.9 mmol) in 100 ml of methanol was added 20 ml of 10% NaOH (aq) with stirring. The mixture was diluted with 1 L of water, and the solid collected by vacuum filtration. The solid was washed twice with 100 ml of water and dried to give 9.1 g of a yellow solid EX-143B (90% yield): m/z (M+H) 406.

To a solution of alcohol EX-136A (0.1 g, 0.28 mmol) in dichioromethane (10 mL) at room temperature was added 4A molecular sieves and NMO (0.05 g, 0.42 mmol). After 10 min, TPAP (0.05 g, 0.014 mmol) was added and the reaction stirred for 15 minutes. The reaction was diluted with dichlormethane and washed with 10% Na₂SO₃, brine and 10% CuSO₄ aqueous solutions. The organic layer was dried (Na₂SO₄), and the solvent removed to give a brown solid, which after chromatography (30% ethyl acetate-50% ethyl acetatelhexanes) gave 0.08 g of a yellow solid EX-143C: m/z (M+H) 363.

A mixture of EX-143C (0.712 g, 1.97 mmol) and EX-143B (0.796 g, 1.97 mmol) in 10 ml of benzene was heated at 80° C. for 4 hours. The solvent was removed in vacuo, and the residue was purified by silica gel chromatograph with 30-40% EtOAc/Hex to give 0.69 g of a yellow foam EX-143D (72% yield): m/z (M+H) 490.

To a mixture of EX-143D (0.300 g, 0.61 mmol) in 8 ml of CH₃OH at 0° C. was added sodium borohydride (0.093 g, 2.45 mmol), and the mixture was warmed to room temperature. The reaction was quenched with 1N HCl, extracted with EtOAc and the layers were separated. The organic layer was dried over sodium sulfate, filtered and removed in vacuo to give 0.300 g of an orange foam EX-143E (100% yield): m/z(M+H) 492.

A mixture of EX-143E (0.300 g, 0.61 mmol) and 10% palladium on carbon (0.030 g) in 5 ml of CH₃OH was shaken on the parr apparatus under an atmosphere of H₂ for 7 hours at 20 psi and then 2 hours at 40 psi. Then 0.5 ml of 2 M hydrogen chloride in diethyl ether was added, and the resulting mixture shaken on the parr apparatus for an additional hour under an atmosphere of H₂ at 40 psi. The reaction mixture was filtered, and the filtrate was concentrated in vacuo to give an oranoe residue. The residue was purified by silica gel chromatography with 3% CH₃OH/CH₂Cl₂ to give 0.064 g of a yellow solid EX-143F(23% yield): m/z (M+H) 464.

To a mixture of EX-143F (0.050 g, 0.108 mmol) in 6 ml of EtOH at 0° C. was bubbled in anhydrous hydrogen chloride gas for 10 min. The solution was allowed to come to room temperature and stirred for 2 hours. The solvent was removed in vacuo, and the resulting residue dried under vacuum for 30 min. The residue was dissolved in 5 ml EtOH, and the solution treated with 5 ml of 2M ammonium in EtOH. The solution was stirred overnight. The solvent was removed in vacuo, and the resulting residue was purified by preparative HPLC with 5-30% CH₃CN/H₂O to give 0.030 g of a white solid (38% yield): mnz (M+H) 481.

Example 144

Using the procedure of Example 143 except using 2-{5-chloro-3-isopropylamino-6-(3-nitrophenyl)-2-oxohydropyrazinyl}acetic acid afforded the corresponding alcohol EX-144A as a yellow solid in 38% yield: m/z (M+H) 353.

Using the procedure of EX-143C except using EX-144A afforded the title compound EX-144B as a yellow solid in 32% yield: mlz (M+H) 351.

Using the procedure of EX-143D except using EX-144B afforded the title compound as a yellow foam EX-144C in 77% yield: m/z (M−H) 476.

Using the procedure of EX-143E except using EX-144C afforded the title compound as a yellow foam EX-144D in 46% yield: ml (M+H) 480.

To a mixture of chlorotrimethylsilane (0.45 ml, 3.54 mmol) and sodium iodide (0.53 g, 3.53 mmol) in 1.4 ml of CH₃CN at 0° C. was added EX-144D (0.282 g, 0.59 mmol) in 1.4 ml of CH₃CN dropwise over 5 min. The mixture was allowed to come to room temperature and monitored by TLC. The reaction was quenched with 10% NaOH and extracted with EtOAc. The organic layer was washed with 5% Na₂S₂O₃ (aq), dried over sodium sulfate and filtered. The solvent was removed in vacuo and the resulting residue was purified by silica gel chromatography with 25-35% EtOAc/Hex to give 0.160 g of a yellow foam EX-144E (59% yield): ml (M+H) 464.

To EX-144E (0.157 g, 0.339 mmol) in 4 ml of DMF was added tin(II)chloride (0.765 g, 3.39 mmol), and the solution was stirred for 3.5 hours. The reaction was quenched with 10% NaOH and extracted with CH₂CL₂. The organic layer was washed with 10% KF (aq), dried over sodium sulfate and filtered. The solvent was removed in vacuo, and the resulting residue was purified by silica gel chromatography with 40-50% EtOAc/Hexane to give 0.099 g of a yellow foam EX-144F (67% yield): m/z(M+H) 434.

To EX-144F (0.081 g, 0.187 mmol) in 5 ml of EtOH at 0° C. was bubbled in anhydrous hydrogen chloride gas for 20 min. The solution was warmed to room temperature and stirred for 2 hours. The solvent was removed in vacuo and the resulting residue dried under vacuum for 10 min. The residue was dissolved in 3 nm EtOH and the solution treated with 5 ml of 2 M ammonium in EtOH. The solution was stirred 1 hour, cooled to 0° C. and treated with anhydrous NH₃ gas bubbled in over 20 rnin. The solution was warmed to room temperature and stirred over two nights. The solvent was removed in vacuo, and the resulting residue was purified by preparative HPLC with 10-70% CH₃CN/H₂O to give 0.063 g of a white solid (38% yield) after lyophilization: m/z (M+H) 451.

Example 145

To EX-32E (0.2 g, 0.4 mmol) in DMSO (3 ml) was added Na₂S (0.39 g, 0.5 mmol) at room temperature under N₂. The mixture was heated to 70° C. overnight, then cooled to −5° C. Aqueous ammonia (1 ml) was added. Aqueous 5% sodium hypochiorite (0.4 ml) was added dropwise during 10 min to the stirred mixture. The mixture was kept stirring for 2 hr. at 0° C. The product was then purified on RF-HPLC to yield 45 mg solid. HRMS calcd for C₂₄H₂₄ClN₇O₂ S (M+H): 510.1479. Found: 510.1477. Anal. Calcd for C₂₄H₂₄ClN₇O₂S+2TFA, 2.6H₂O: C, 42.85; H, 4.01: N, 12.49. Found: C, 42.45; H, 3.84; N, 12.90.

Example 146

A solution of 5-methylbenziridazole (2.5 g, 18.9 mmol) in methylene chloride (4 mL) and pyridine (5 mL) was treated with benzyl chloroformate (4.8 g, 28.3 mmol). The mixture was stirred for 18 hrs., and iN hydrochloric acid (200 mL), and methylene chloride (100 mL) then was added. The layers were separated, and the aqueous extracted 2× with methylene chloride. The organics were combined, washed with brine, dried over magnesium sulfate and concentrated in-vacuo. Purification by column chromatography (silica gel 200-400 mesh) eluting with 15% ethyl acetate/hexanes afforded EX-146A (3.6 g, 13.5 mmol) as an off white solid. ¹HNMR(CDCl₃) 2.47 (d, J=7.0 Hz, 3H), 5.49 (s, 2H), 7.20 (t, J=8.9 Hz, 1H), 7.28-7.66 (m, 5H), 7.83-7.90 (m, 1H), 8.46 (d, J=18.0 Hz, 1H).

A solution of EX-146A (1.0 g, 3.7 mmol) in carbon tetrachloride (30 mL) was treated with N-bromosuccininide (668 mg, 3.7 mmol) and benzoyl peroxide (20 mg) and heated to reflux for 64 hrs. After cooling to room temperature, water (100 ml) was added and extracted 3 times with ethyl acetate, dried over magnesium sulfate, filtered and concentrated in vacuo. Purification by column chromatography (silica gel 200-400 mesh) eluting with 20% ethyl acetate/hexanes, afforded EX-146B (420 mg, 1.2 mmol) as an off white solid: M+H 344 (100%), M+2H 346(100%).

A solution of di-tert-butyl iminodicarboxylate (280 mg, 1.3 mmol) in tetrahydrofuran was cooled to 0° C., and treated with sodium hydride (60% dispersion, 60 mg, 1.4 mmol). The mixture was stirred for 30 minutes and then was added EX-146B (410 mg, 1.2 mmol). The mixture was allowed to warmed to room temperature and stirred for 1 hour, at which time water (100 mL) was added, and the reaction mixture extracted 3× with ethyl acetate. The ethyl acetate was dried over magnesium sulfate, filtered, and concentrated in vacuo to afford EX-146C (573 mg, 1.19 mmol): M+H 482.

A solution of EX-146C (573 mg, 1.19 mnmol) in methanol (5 mL) was treated with 2 M hydrochloric acid in diethyl ether (5 mL) for 23 hrs. The mnixture was diluted with diethyl ether (50 mL), and the resulting precipitate was filtered off and dried in vacuo to afford EX-146D (145 mg, 0.66 mmol), as a tan solid: M+H 148.

A solution of EX-146D (140 mg, 0.64 mmol) in methylene chloride (9 mL) and dimethylformnamide (1 mL) was treated with 1-hydroxybenzotriazole (156 mg, 1.2 mmol) for 20 min. Then was added EDC (295 mg, 1.5 mmol), N,N-diisopropylethylamine (298 mg, 23 mmol), and 2-{5-chloro-3-(N-cyclobutylamino)-6-(3-nitrophenyl)-2-oxohydropyrazinyl}acetic acid (290 mg, 0.77 mmol) and the reaction allowed to stir for 18 hr. Water was then added and extracted 3× with ethyl acetate. The organics were then washed lx with brine, dried over magnesium sulfate, filtered and concentrated in vacuo. Purification by column chromatography (silica gel 200-400 mesh) eluting with 10% methanouethyl acetate afforded EX-146E (200 mg, 0.39 mmol) as a yellow solid: M+H 508.

A solution of EX-146E (200 mg, 039 mmol) in methanol (10 mL) was treated with 3 N hydrochloric acid in methanol (0.4 mL) and 5% Pd(C) (40 mg). The mixture was hydrogenated at 45 psi hydrogen, on a Parr shaker apparatus for 2.5 hrs. The catalyst was then filtered off and washed extensively with methanol. The filtrate was concentrated in vacuo. The residue was dissolved in ethyl alcohol and triturated with diethyl ether. The solid formed was filtered and extensively washed with diethyl ether to afford the product (130 mg, 0.25 mmol) as an off-white solid: M+H 478.

Example 147

6-methylisoquinoline was prepared by the method of Hendrickson, J. B.; Rodriquez, C. J. Org. Chem. 1983, 48, 3344: ¹ H NMR (CDCl₃) δ 9.18 (s, 1H), 8.47 (d, 5.8 Hz, 1H), 7.86 (d, J=83 Hz, 1H), 7.58 (bs, 1H), 7.56 (d, 5.8 Hz, 1 H), 7.43 (dd, J=8.3 Hz, J=1.61 Hz, 1H), 2.57 (s, 3H).

6-methylisoquinoline was converted to 1-chloro-6methylisoquinoline by the method of Rewinkel, J. B. M.; Lucas, H.; van Galen, P. J. M.; Noach, A. B. J.; van Dinther, T. G.; Rood, A. M. M.; Jenneboer, A. J. S. M.; van Boeckel, C. A. A. Bioorganic and Medicinal Chemistry Letters 1999, 9, 685: ¹H NMR (CDCl₃) δ 8.16-8.24 (m, 2H), 7.58 (s, 1H), 7.46-7.52 (m, 2H), 2.58 (s, 3H).

To a solution of 1-chloro-6-methylisoquinoline (3.20 g, 18.1 mmol) in CCl₄ (250 mL) was added NBS (2.59 g, 14.6 mmol) and benzoyl peroxide (500 mg). The resulting rnixture was heated at reflux overnight. After this time the solvent was removed and the residue was purified by flash chromatography (SiO₂, 20/1 hexanes-ethyl acetate) to afford 3.0 g (80% yield) of the desired α-bromo compound EX-147A: ¹H NMR (CDCl₃) δ 8.28-8.35 (m, 2H), 7.83 (s, 1H), 7.71 (dd, J=8.9 Hz, J=1.2 Hz, 1H), 7.58 (d, J=5.6Hz, 1H), 4.62 (s, 2H); LRMS (ESI) [M+H]+=256, 258.

To a solution of the a-bromo product EX-147A(2.45 g, 9.56 mmol) in DMF (100 mL) was added potassium phthalimide (1.99 g of 98%,10.5 mmol) and the reaction was allowed to stir at room temperature for 12 h. The mixture was then concentrated, and the residue was purified by flash column chromatography (SiO₂, 10/1 to 5/1 hexanes-ethyl acetate) to afford 436 mg (14% yield) of the phthalimide alkylation product EX-147B: ¹H NMR (CDCl₃) δ 8.25-8.32 (m, 2H), 7.85-7.89 (m, 3H), 7.73-7.77 (m, 3H), 7.59 (d, J=5.4 Hz, 1H), 5.05 (s, 2H); LRMS (ESI) [M+H]+=323.

The phthalimnide product EX-147B(436 mg, 1.35 mmol) was dissolved in methanol (25 mL) and treated with hydrazine hydrate (79 μL of 98%, 1.62 mmol). The resulting mixture was heated at reflux for 2 h. At this time the reaction mixture was cooled, and the solid phthaloylhydrazide was filtered. The filtrate was concentrated to afford 268 mg of the desired product EX-147C with a trace of phthaloylhydrazide (the mixture was used in the next step without further purification): ¹H NMR (DMSO-d₆) δ 7.47-8.26 (complex m, 5H), 3.94 (s, 2H).

The pyrazinone free acid 2-{5-chloro-3-(N-cyclobutylamino)-6-(3-nitrophenyl)-2-oxohydropyrazinyl}acetic acid was coupled to the aminomethylisoquinoline EX-147C using the standard polymeric carbodiimide coupling procedure. The HOBt adduct EX-147D was formed upon purification by flash chromatography (SiO₂, 80/1 CHCl₃—MeOH): ¹H NMR (CDC13) d 8.37 (d, J=8.4 Hz, 1H), 8.27-833 (m, 2H), 8.09 (d, J=8.4 Hz, 1H), 7.73-7.78 (m, 2H), 7.69 (s, 1H), 7.63 (t, J=8.1 Hz, 1H), 7.42-7.56 (complex m, 4H), 7.37 (d, J=5.4 H, 1H), 6.78 (bt, 1H), 6.52 (d, J=8.1 Hz, 1H), J=4.63 (apparent t, J=5.4 Hz, 2H), 4.48-4.59 (m, 1H), 4.90 (ABq, J=15.3 Hz, δv=25.6 Hz, 2H), 2.40-2.53 (m, 2H), 1.92-2.08 (m, 2H), 1.72-1.85 (m, 2H); LRMS (ESI) [M+H+=652.

To the HOBt adduct EX-147D from Step A (199 mg, 0.31 mmol) in DMF (15 mL) was added ammonium acetate (3.20 g) and the reaction was heated at reflux for 12 h. After this time the reaction was concentrated, and the residue was purified by reverse phase HPLC (Gilson, YMC CombiPrep ODS-A 50×20 mm, Gradient 35% ACN 65% 0.1% TFA to 65% ACN over 10 min) to afford 22.3 mg of the desired aminoisoquinoline EX-147E: LRMS (ESI) [M+H]=534.

The product EX-147E was hydrogenated to give the product as previously described: LRMS (ESI) [M+H]⁺=505.

Example 148

To a solution of 2-{5-chloro-3-(N-cyclobutylamino)-6-(3-nitrophenyl)-2-oxohydropyrazinyl}acetic acid (3.51 g, 9.3 mmol) in 60 mL of DMF at 0° C. was added HOBt (1.51 g, 11.7 mmol) and EDC (2.15 g, 11.2 mmol). After 30 min, a solution of 4-cyanobenzylaniiine (1.20 g, 7.0 mmol) in DMF (20 mL) and TEA (4.8 mL, 35.0 mmol) was added via canula. After stirring at room temperature for 2 hours, the reaction was poured into water and ether. The layers were separated and the aqueous layer extracted with ethyl acetate. The organic extracts were collected and washed with bicarbonate and brine. The organic fraction was dried (MgSO₄) and the solvent removed to give the product as a yellow solid EX-148A (3.40 g): m/z+1=493.

To a solution of EX-148A, (1.4 g, 2.8 mmol) in ethanol (30 mL) in a Parr bottle was added 10% Pd/C (0.07 g). The reaction was shaken on a Parr apparatus for 2 hours and then filtered through celite. The solvent was removed to give the product as an off-white solid EX-148B (1.27 g): m/z+1=463.

To a solution of EX-148B (1.22 g, 2.6 mmol) in THF (40 mL) at room temperature was added TEA (0.47 mL, 3.38 mmol), DMAP (0.03 g, 0.26 mmol) and Boc₂O (0.63 g, 2.86 mmol). After stirring overnight the reaction was diluted with ethyl acetate and water. The layers were separated and the organic layer washed with 1N HCl, bicarbonate and brine. The solvent was removed to give an oil which was a mixture EX-148C of mono and diboc products. The crude mixture was used in the next step (1.72 g): m/z+1=563 and m/z+1=663.

To a solution of EX-148C (1.72 g, 3.0 mmol) in pyridine (25 mL) was added TEA (2.42 mL, 17.0 mmol). A stream of H₂S gas was bubbled through the reaction mixture for 15 minutes at room temperature. After stirring at room temperature for 2 days the solvent was removed in vacuo and residue diluted with ethyl acetate. The organic mixture was washed with 1 N HCl and dried (Na₂SO₄). The solvent was removed to give an oil, which after chromatography (30% to 50% ethyl acetate/hexanes) gave the product EX-148D as a foam (0.63 g): m/z+1=597.

To a solution of EX-148D (0.32 g, 0.46 mmol) in acetone at room temperature was added methyl iodide (1.0 mL, 16.1 mmol). After stirring the reaction mixture for 2 days the solvent was removed in vacuo to give an orange solid EX-148E (0.42 g): m/z+1=711.

To a solution of EX-148E (0.42 g, 0.50 mmol) in methanol (10 mL) was added 0.017 mL of hydrazine at room temperature. After stirring the reaction mixture for 2 days in the dark the solvent was removed in vacuo to give an oily residue. The residue was triturated with ether to give a yellow solid EX-148F, which was used in the next step (0.41 g): m/z+1=695.

To a suspension of EX-148F (0.41 g, 0.50 mmol) in dichworomethane (10 mL) at room temperature was added TFA (10 mL). After 2 hours the solvent was removed in vacuo and the residue triturated with ether to give the crude product. The crude product was dissolved in water and purified by RP-HPLC to give the final product as a TFA salt (0.31 g): m/z+1=495.

Example 149

2-{5-chloro-3-(N-isopropylamino)-6-(3-nitrophenyl )-2-oxohydropyrazinyl}acetic acid (230 mg, 0.628 mmole) and 5-(N-benzyloxycarbonylamidino)pyrid-2-ylmethylamine (223.8 mg, 0.628 mmole) were coupled by standard resin coupling conditions described herein. The crude product resulting from coupling was then triturated with diethyl ether, filtered, and dried under vacuum. The cake was then stirred in a mixture of ethyl acetate/acetonitrile/ethanol and purged with nitrogen. A catalytic amount of palladium black was added with excess amunonium formate, and then stirred under ambient pressure by means of a hydrogen balloon at room temperature for 18 hrs. The reaction was filtered through celite and the filtrate concentrated in vacuo. The residue was stirred in 3N HCl Dioxane, diluted with diethyl ether, and filtered. The cake was dried in a vacuum desicator to give the product as a tan solid (76.3 mg, 22%): HPLC/LRMS>91%, (M+H)⁺ 469; HRMS (EI) calcd for C₂₂H₂₆ClN₂O₂ 469.1867, found 469.1882.

Example 150

The product of Example 149 was stirred in methanol with a catalytic amount of palladium black and excess ammonium formate, and then reduced under ambient pressure with hydrogen balloon after 3hrs. The reaction was filtered through celite and concentrated in vacuo. The residue was chromatographed with HPLC (5% acetonitrile to 65% acetonitrile/water/0.01% TFA), and the product isolated as a white solid (I 1.7mg, 4%): HPLC/LRMS>99%, (M+H)⁺ 473; HRMS (EI) calcd for C₂₂H₃₀ClN₈O₂ 473.2180, found 473.2173.

Example 151

2-{5-chloro-3-(N-cyclobutylamino)-6-(3-(tert-butoxycarbonylarnino)pbenyl)-2-oxohydropyrazinyl}acetic acid and 4-(benzyloxycarbonylamidino)benzylamine hydrochloride were coupled under standard resin conditions as described herein. The residue was chromatographed by HPLC (5% acetonitrile to 65% acetonitrile/water/0.01% TFA), and then converted to the hydrochloride salt to yield the title compound as an off white solid (218 mg, 11%): ¹H NMR (300 MHz, DMF-d7) δ 11.28 (br s, 1H), 10.99 (br s, 1H), 10.16-9.98 (br m, 2H), 9.09 (m, 2H), 8.26 (m, 2H), 8.03 (m, 1H), 7.89 (1H), 7.92 (m, 1H), 7.75-7.50 (m, 8H), 5.63 (s, 2H), 4.96 (m, 2H), 4.73 (m, 2H), 4.52 (br m, 1H), 2.51-2.36 (m, 4H), 1.96-1.86 (m, 2H): HPLC/LRMS 89%, (M+H)⁺ 614; HRMS (EI) calcd for C₃₂H₃₃ClN₇O₄ 614.2283, found 614.2301.

Example 152

To a stirred solution of 4-Di-tert-butoxycarbonylaminomethyl-N-hydroxy-benzamidine (Synthetic Communication, 28 (23), 4419-4429 (1998)) (10.99 g, 30.1 mmole) in THF (350 mL) was added 2.5N NaOH (120.44 mL, 301.1 mmoles) and cooled to 0-5° C. on an Ice-bath. Ethyl chlorofornate (7.20 mL, 75.3 mmole) was added dropwise, allowed to warm to room temperature, and stirred 18 hrs. The aqueous was drawn off, and the organic concentrated in vacuo. The residue was taken up in diethyl ether repeatedly and dried on vacuum pump to give the product EX-152A as a white solid (8.25 g, 70%): ¹H NMR (300 MHz, Acetone-d₆) δ 7.91 (d, J=8.4Hz, 2H), 7.32 (d, J=8.1 Hz, 2H), 4.81 (s, 2H), 1.47 (s, 18H); HPLC/LRMS>91%, (M+Na)⁺ 414; HRMS (EI) calcd for C₁₉H₂₆N₃O₆ 392.1822, found 392.1855.

EX-152A (0.72 g, 1.8 mmole) was stirred in 3N HCl—MeOH (6 mL, 18 mmole) at room temperature for 5 hrs. The reaction mixture was diluted with diethyl ether, filtered, and dried cake in vacuum dessicator to give the product EX-152B as a white solid in quantitative yield: ¹H NMR (300 MHz, DMSO-d₆) δ 13.40 (br s, 1H), 8.83 (br s, 2H), 7.91 (d, J=8.4 Hz, 2H), 7.71 (d, J=8.4 Hz, 2H), 4.08 (s, 2H); ¹³C NMR (75 MHz, DMSO-d₆) δ 160.61, 157.87, 139.0, 130.42, 126.99, 123.88, 42.32; HPLC>99%; HRMS (EI) calcd for C9H10N3O2 192.0773, found 192.0736.

2-{5-chloro-3-(N-cyclobutylamino)-6-(3-(tert-butoxycarbonylamino)phenyl)-2-oxohydropyrazinyl}acetic acid and EX-152B were coupled under standard resin conditions as described herein. The residue was chromatooraphed by HPLC (5% acetonitrile to 65% acetonitrile/water/0.1 TFA), and converted to the hydrochloride salt to yield the product as an off white solid (114 mg, 13%): ¹H NMR (300 MHz, DMF-d₇)_—13.40 (br s, 1H), 8.89 (m, 1H), 8.13 (m, 2H), 8.04 (m, 1H), 7.95 (m, 1H), 7.78 (m, 2H), 7.60 (m, 1H), 7.53 (m, 2H), 4.85-4.67 (m, 3H), 4.56 (m, 2H), 2.51-2.39 (m, 4H), 1.97-1.92 (m, 2H); ¹³C NMR (75MHz, DMF-d₇)₁₃ 166.85, 162.78, 160.63, 158.17, 151.25, 148.99, 144.20, 134.30, 134.02, 130.76, 130.59, 128.30, 126.85, 126.20, 125.61, 124.59, 122.81, 122.76, 48.84, 46.36, 42.67, 30.65, 15.33; HPLC/LRMS>99%, (M+H)⁺ 522; HRMS (EI) calcd for C₂₅H₂₅ClN₇O₄ 522.1657, found 522.1671.

Example 153

To a solution of the product of Example 90 (0.6 g, 1.0 mmol) in THF:H₂O (16 mL:4 mL) was added Na₂CO₃ (0.28 g, 3.0 mmol) and Boc₂O (0.71 g, 3.0 mmol) at 0° C. After stirring for 3 hours the reaction was diluted with ethyl acetate and water. The layers were separated and the organic layer washed with brine and dried (Na₂SO₄). The solvent was removed in vacuo to give a crude solid, which after chromatography (30%-50% ethyl acetate/hexanes) gave the desired product EX-153A (0.71 g): m/z+1=752.

To a solution of EX-153A (0.71 g, 0.94 mmol) in methanol (15 mL) was added hydrazine (3 mL, 3.0 mmol) at room temperature. After stirring ove might, the solvent was removed to give a yellow oil, which after chromatography (dichloromethane-10% methanol/dichloromethane), gave the product EX-153B as a foam (0.26 g): m/z+1=621.

To a solution of EX-153B (0.26 g, 0.41 mmol) in dichworomethane (5 mL) at room temperature was added TFA (5 mL). After 1 hour, the solvent was removed in vacuo to give an oil. The oil was triturated with ether to give a solid which was filtered. The hygroscopic solid was redissolved in water and lyophilized to give the product as a TFA salt (0.23 g): m/z+1=521.

Example 154

2-Fluoro-4-methylbenzonitile was prepared from 4-bromo-3-fluorotoluene by the methods outlines and referenced in Maligres, P. E.; Waters, M. S.; Fleitz, F.; Askin, D. Tetrahedron Lett. 1999, 40, 8193: ¹H NMR (CDCl₃) δ 7.50 (m, 1H), 7.05 (m, 2H), 2.43 (s, 3H).

α-Bromo-3-fluorotolunitrile was prepared by the standard procedure outlined earlier for the unsubstituted 4aridinobenzylamine derivative in Example 44: ¹H NMR (CDCl₃) δ 7.56-7.61 (m, 1H), 7.45-7.48 (m, 1H), 7.23-7.30 (m, 1 H), 4.43 (s, 2H).

α-N,N-Di-(tert-butoxycarbonyl)amino-3-fluoro-4-tolunitrile (EX-154A) was also prepared by the standard procedure outlined earlier for the unsubstituted 4-amidinobenzylamine derivative in Example 44: ¹H NMR (CDCl₃) δ 7.00.7.60 (complex m, 3H), 4.79 (s, 2H), 1.46 (s, 18H).

To the fluoronitrile product EX-154A (10.0 g, 28.8 mmol) in n-butanol (500 mL) was added 2-aminoethanethiol hydrochloride (3.68 g of 98%, 31.7 mmol), followed by KOH (4.04 g of 88%, 63.4 mmol). The resulting mixture was heated to 100° C. for 1 h. At this time, LCMS indicated reaction was complete. The solvent was evaporated, and the residue was dried at high vacuum to afford 9.0 g of the crude desired mono-Boc product EX-154B: ¹H NMR (DMSO-d₆) δ 7.05-7.75 (complex m, 3H), 4.15 (m, 2H), 2.69-2.78 (complex m, 4H), 1.37 (s, 9H); LRMS (ESI) [M+H]⁺32 308.

EX-154B was converted to the Z-protected material EX-154C as described for the parent 4-amidinobenzylamine derivative in Example 44: ¹H NMR (CDCl₃) δ 7.24-7.40 (m, 8H), 5.10 (s, 2H), 4.70 (s, 2H), 3.42-3.56 (m, 2H), 2.70-2.88 (m, 2H), 1.42-1.50 (m, 9H); LRMS (ESI) [M -Boc +Na]+=464.

EX-154C was converted to the free amine hydrochloride EX-154D as described for the parent 4-anidinobenzylamine derivative in Example 44: ¹H NMR (DMSO-d₆) δ 7.23-7.49 (m, 8 H), 4.99 (s, 2H), 4.06-4.19 (m, 2H), 3.18-332 (m, 2H), 2.71-2.80 (m, 2H); LRMS (ESI) [M +H]⁺342 for free base.

The product was prepared from 2-{5-chloro-3-(N-cyclobutylamnino)-6-(3-nitrophenyl)-2-oxohydropyrazinyl}acetic acid and the aminomethylbenzothiazepine EX-154D by the standard protocol reported earlier: LRMS (ESI) [M +H]⁺=538.

Example 155

To a solution of 2-{5-chloro-3-(N-isopropylamino)-6-(3-nitrophenyl)-2-oxohydropyrazinyl}acetic acid (0.4 g, 1.1 mmol) in benzene (10 mL) was added TEA (0.15 mL) at room temperature. After30 min, pivaloyl chloride (0.13 mL, 1.1 mmol) was added at 0° C. and the reaction stirred for 1 hour. In a separate round bottom containing 4aminophenylsulfonylguanidine (0.23 g, 1.1 mmol) was added pyridine (20 mL) and the mixed anhydride from above. The reaction was heated to 80° C. for 1 h and then allowed to cool. The solvent was removed in vacuo to give a brown foam EX-155A which was used without purification in the next step: m/z+1=563.

To a solution of crude EX-155A (0.6 g, 1.1 mmol) in ethanol (20 mL) was added 2 M HCl in ether (2 mL) and 10% Pd/C (0.5 g) at room temperature. The reaction was shaken on a Parr apparatus at 40 psi for 1 hour. The reaction mixture; was filtered and the solvent removed in vacuo to give an oil. The crude product was basified with 2.5 M NaOH and extracted with ethyl acetate. The organic layer was dried (Na₂SO₄) and the solvent removed to give a solid, which was taken up in 1 N HCl and lypholized to give the product as an HCl salt (0.24 g): m/z+1=533.

Example 156

To a solution of 2-{5-chloro-3-(N-isopropylanLino)-&(3-nitrophenyl)-2-oxohydropyrazinyl}acetic acid (0.76 g, 2.1 mmol) was added HOBt (0.34 g, 2.5 mmol) and EDC (0.49 g, 2.5 mmol). After 20 minutes, the amine hydrochloride (0.27 g, 1.6 mmol) and TEA (1.1 mL, 9.0 mmol) were added to the reaction mixture. The reaction mixture was stirred for 3 hours and then diluted with water and ether. The organic layer was washed with 1 N NaOH and brine. The organic extract was dried (NaSO₄) and the solvent removed to give an orange foam EX-156A (0.75 g): m/z+1=493.

To a solution of EX-156A (0.75 g, 1.7 mmol) in THF:ethanol (20 mL:20 mL) was added 10% Pd/C (0.25 g). The reaction was shaken on a Parr apparatus at 40 psi for 3 hours. The reaction was filtered through a pad of celite, and the solvent removed to give a foam EX-156B (0.68 g): m/z+1=421.

To a solution of EX-156B (0.68 g, 1.6 mmol) in pyridine (20 mL) was added TEA (3 mL). Hydrogen sulfide gas was bubbled through the solution for 5 minutes and then stirred for 24 hours at room temperature. The reaction was diluted with water and ethyl acetate. The layers were separated, and the organic layer washed with brine. The organic extract was dried (Na₂SO₄), and the solvent removed to give an oil (containing some pyridine). The oil was purified by RP-HPLC to give the product as a TFA salt (0.35 g): m/z+1=455.

Example 157

To a solution of 2-{5-chloro-3-(N-isopropylamino)-6-(3-aminophenyl)-2-oxohydropyrazinyl}acetic acid (0.5 g, 1.5 mmol) in DMF (20 mL) was added EDC (0.46 g, 2.4 mmol), TEA (0.69 mL, 4.9 mmol) and HOBt (0.32 g, 2.4 mmol) at 0° C. After 15 minutes 4-cyanophenylhydrazine hydrochloride (0.25 g, 1.5 mmoL) was added. The reaction was allowed to warm to room temperature and stirred for 2 hours. The reaction was diluted with ether and water. The layers were separated, and the organic layer washed with bicarbonate and brine. The organic extracts were dried (Na₂SO₄), and the solvent was removed in vacuo to give a solid, which after chromatography (ethyl acetate) gave the desired product EX-157A (0.32 g): m/z+1=452.

HCl gas was bubbled into a solution of EX-157A (0.32 g, 0.71 mnmol) in dry ethanol (10 mL) for 10 min. After stirring overnight at room temperature, the solvent was removed in vacuo to give the crude product EX-157B as a yellow oil (0.35 g): m/z+1=498.

Ammonia gas was bubbled into a solution of EX-157B (0.35 g, 0.70 mmol) in methanol (10 mL) for 5 min. After stirring for 2 hours at room temperature, the solvent was removed in vacuo to give a solid. The solid was taken up in water and purified by RP-HPLC to give the desired product (0.145 g): m/z+1=469.

Example 158

2-{5-chloro-3-(N-cyclobutylamino)-6-(3-(tert-butoxycarbonylarino)phenyl)-2-oxohydropyrazinyl}acetic acid and 4-(benzyloxycarbonylamino)benzylamine hydrochloride were coupled under standard resin conditions as described in Example 147 to give the product: m/z+1=454.

Example 159

2-{5-chloro-3-(N-cyclobutylamino)-6-(3-(tert-butoxycarbonylamino)phenyl)-2-oxohydropyrazinyl}acetic acid and 2-oxo-2-thiazolylethylamine hydrochloride were coupled under standard conditions as described herein to give the product: m/z+1=503.

Example 160

To a mixture of the product of Example 90 (0.020 g, 0.034 mmol) and benzylamine (0.037 g, 0.34 mmol) was added 1 ml of CH₃OH, and the resulting mixture was heated at 65° C. for 15 hours. The crude reaction mixture was purified by preparative HPLC with 10-70% CH₃CN/H₂O (0.05% TFA) to give 0.011 g of a white solid after lyophilization (40% yield): m/z(M+H) 570.

Example 161

Prepared according to the procedure of Example 160 except using isopropylamine and heating for 40 hours afforded the product as a white solid (61% yield): m/z (M+H) 522.

Example 162

Prepared according to the procedure of Example 160 except usina 2 M methylarnine in methanol afforded the product as a white solid (71% yield): m/z (M+H) 508.

Example 163

Prepared according to the procedure of Example 160 except using 2-methoxyethylamine afforded the product as a white solid (35% yield): m/z (M+H) 538.

Example 164

Prepared according to the procedure of example Example 160 except using 2-methoxyethylamine afforded the product as a white solid (18% yield): m/z (M+H) 596.

Example 165

Prepared according to the procedure of example Example 160 except N,N-dimethylethylenediamine afforded the product as an off-white solid (24% yield): m/z (M+H) 622.

Example 166

Prepared according to the procedure of example PHA-427798 except except N,N-dimethylethylenediamine afforded the product as an off-white solid (13% yield): m/z (M+H) 551.

Using the examples and methods described herein previously, the following examples having a arnidinoaralkyl oramidinoheteroaralkyl type Y^o group could be prepared:

• 6-[3-aminophenyl]-5-chloro-3-[N-ethyl-N-methylhydrazino]-N-[[4-aminoiminomethylphenyl]methyl]-2-oxo-1(2H)-pyrazineacetamide;
• 6-[3-aminophenyl]-5-chloro-3-[N,N-diethylhydrazino]-N-[[4-aminoiminomethylphenyl]methyl]-2-oxo-1(2H)-pyrazineacetamide;
• 6-[3-amino-5-carboxyphenyl]-5-chloro-N-[[4-aminoiminomethylphenyl]methyl]-3-[N,N-dimethylhydrazino]-2-oxo-1(2H)-pyrazineacetamide;
• 6-[3-amino-5-carboxyphenyl]-5-chloro-3-[N-ethyl-N-methylhydrazino]-N-[(4-aminoiminomethylphenyl]methyl]-2-oxo-1(2H)-pyrazineacetamide;
• 6-[3-amino-5-carboxyphenyl]-5-chloro-3-[N,N-diethylhydrazino]-N-[[4-aminoiminomethylphenyl]methyl]-2-oxo-1(2H)-pyrazineacetamide;
• 6-[3,5-diaminophenyl]-5-chloro-N-[[4-aminoiminomethylphenyl]methyl]-3-[N,N-dimethylhydrazino]-2-oxo-1(2H)-pyrazineacetarnide;
• 6-[3,5-diaminophenyl]-5-chloro-3-[N-ethyl-N-methylhydrazino]-N-[[4-aminoiminomethylphenyl]methyl]-2-oxo-1(2H)-pyrazineacetamide;
• 6-[3,5-diaminophenyl]-5-chloro-3-[N,N-diethylhydrazino]-N-[[4-aminoiminomethylphenyl]methyl]-2-oxo-1(2H)-pyrazineacetamide;
• 6-[3-amino-5-(N-benzylamidocarbonyl)phenyl]-5-chloro-N-[[4-aminoirminomethylphenyl]methyl]-3-[N,N-dimethylhydrazino]-2-oxo-1(2H)-pyrazineacetamide;
• 6-[3-amino-5-(N-benzylamidocarbonyl)phenyl]-5-chloro-3-[N-ethyl-N-methylhydrazino]-N-[[4-aminoiminomethylphenyl]methyl]-2-oxo-1(2H)-pyrazineacetamide;
• 6-[3-amino-5-(N-benzylamidocarbonyl)phenyl]-5-chloro-3-[N,N-diethylhydrazino]-N-[[4-aminoiminomethylphenyl]methyl ]-2-oxo-1(2H)-pyrazineacetaride.

Using the examples and methods described herein previously, the followina further examples havina a amidinoaralkyl or arnidinoheteroaralkyl type Y^o group could be prepared of the formula: wherein;

R² is 3-amidocarbonyl-5-aminophenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is 3-chlorophenyl A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro:

R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-(2-triftuoromethylbenzyl)amidocarbonyl)-phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3,5-diaminophenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-carboxyphenyl, B is 3-chlorophenyl, A is CH₂CH₂,Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amidocarbonyl-5-ainophenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3.-amino-5-(N-benzylarnidocarbonyl)phenyl, B is 3-chlorophenyl, A is CH₂CH₂,Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, B is 3-chlorophenyl, A is CH₂CH₂,Y⁰ is 4-amidinobenzyl, and R¹ is bydrido;

R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)-phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3,5-diaminophenyt, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is a amidinobenzyl, and R¹ is hydrido;

R² is 3-amino-5-carboxyphenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-aimidinobenzyl, and R¹ is hydrido;

R² is 3-thienyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylphenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro:

R² is 3-amino-5-(2-phenylethyl)phenyl, B is phenyl, A is CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylaminophenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethylamiino)phenyl, B is 2-imidazoyl, A is CH₂C₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzyloxyphenyl, B is phenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethoxy)phenyl, B is phenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, B is 3-aminophenyl, A is C(O)NH, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, B is 3-amidinophenyl, A is CH₂,Y⁰ is arnidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylphenyl, B is phenyl, A is CH₂CH, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethyl)phenyl, B is phenyl, A is CH₇CH₂,Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylaminophenyl, B is phenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethylamino)phenyl, B is 4-amidinophenyl, A is CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzyloxyphenyl, B is phenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, B is phenyl, A is CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethoxy)phenyl, B is 4-pyridyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, B is 3-pyridyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylphenyl, B is 4-pyridyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethyl)phenyl, B is phenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3-amino-5-benzylaminophenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is fluoro;

R² is 3-amino-5-(2-phenylethylamino)phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethoxy)phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro; R² is 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyI, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, B is 3-chlorophenyl, A is CH₂CH₂, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-aminophenyl, B is 2-propyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and R¹ is chloro;

R² is 3-aminophenyl, B is 2-propyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and R¹ is hydrido;

R² is 3,5-diaminophenyl, B is 2,2,2-trifluoroethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3,5-diaminophenyl, B is (S)-2-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3,5-diaminophenyl, B is isopropyl, A is a bond, Y⁰ is 1-amidinobenzyl, and R¹ is chloro;

R² is 3,5-diaminophenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzylbenzyl, and R¹ is chloro;

R² is 3,5-diaminophenyl, B is ethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3,5-diaminophenyl, B is ethyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-carboxyphenyl, B is 2,2,2-trifluoroethyl, A is a bond, Y⁰ is 4-amdinobenzyl, and R¹ is chloro;

R² is 3-amino-5-carboxyphenyl, B is (S)-2-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-carboxyphenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzylbenzyl, and R¹ is chloro;

R² is 3-amino-5-carboxyphenyl, B is ethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-carboxyphenyl, B is ethyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro:

R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is 2,2,2-trifluoroethyl, A is a bond, is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is (S)-2-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzylbenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-benzylarnidocarbonyl)phenyl, B is ethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is ethyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylphenyl, B is 2,2,2-trifluoroethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylphenyl, B is (S)-2-butyl, A is a bond, Y⁰ is amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylphenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylphenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzylbenzyl, and R¹ is chloro; R² is3-amino-5-benzylphenyl, B is ethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5benzylphenyl, B is ethyl, A is a bond. Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethyl)phenyl, B is 2,2,2-trifluoroethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethyl)phenyl, B is (S)-2-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethyl)phenyl, B is isopropyl, A is a bond, Y⁰ is 1-amidino-2-fluorobenzylbenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethyl)phenyl, B is ethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethyl)phenyl, B is ethyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5benzylaminophenyl, B is 2,2,2-trifluoroethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylaminophenyl, B is (S)-2-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylaminophenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylaminophenyl, B is isopropyl, A is a bond, Y⁰is 4-amidino-2-fluorobenzylbenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylaminophenyl, B is ethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylaminophenyl, B is ethyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethylamino)phenyl, B is 2,2,2-trifluoroethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethylamino)phenyl, B is (S)-2-butyl, A is a bond, is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethylamino)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethylaimino)phenyl, B is isopropyl, A is a bond, is 4-amidino-2-fluorobenzylbenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethylamino)phenyl, B is ethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethylamino)phenyl, B is ethyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzyloxyphenyl, B is 2,2,2-trifluoroethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzyloxyphenyl, B is (S)-2-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzyloxyphenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzyloxyphenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzylbenzyl, and R¹ is chloro;

R² is 3-amino-5-benzyloxyphenyl, B is ethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro; R² is 3-amino-5-benzyloxyphenyl, B is ethyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyi, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethoxy)phenyl, B is 2,2,2-trifluoroethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethoxy)phenyl, B is (S)-2-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R is chloro;

R² is 3-amino-5-(2-phenylethoxy)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethoxy)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzylbenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethoxy)phenyl, B is ethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethoxy)phenyl, B is ethyl, A is a.bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzylanmino)phenyl, B is 2,2,2-trifluoroethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, B is (S)-2-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amnino-5-(4-trifluoromethylbenzylamnino)phenyl, B is isopropyl, A isa bond, Y⁰ is 4-amidino-2-fluorobenzylbenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, B is ethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzylarino)phenyl, B is ethyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, B is 2.2,2-trifluoroethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, B is (S)-2-butyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, B is isopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzylbenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, B is ethyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, B is ethyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3,-diaminophenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3,5-diaminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3,5-diaminophenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3,5-diaminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3,5-diaminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and R¹ is chloro;

R² is 3,5-diaminophenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-carboxy-5-aminophenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-carboxy-5-aminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R ¹s chloro;

R² is 3-carboxy-5-aminophenyl, B is cyclopropyl, A is a bond, Y⁰ is 1-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-carboxy-5-aminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3-carboxy-5-aminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and R¹ is chloro;

R² is 3-carboxy-5-aminophenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-benzylamidocarbonyl)phenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-(2-tnfluoromethylbenzyl)amidocarbonyl)-phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)-phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)-phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)-phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)-phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)-phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and R is chloro;

R² is 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)-phenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylphenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylphenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylphenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylphenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylphenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3-amino-5-benzylphenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylphenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethyl)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R₂ is 3-amino-5-(2-phenylethyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro:

R² is 3-amino-5-(2-pfienylethyl)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R1 is chloro;

R² is 3-amino-5-(2-phenylethyl)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3-amino-5-(2-phenylethyl)phenyl, B is cyciobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethyl)phenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylaminophenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylaminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylaminophenyl, B is cyclobutyl, A is a bond, Y0 is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylaminophenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzylaminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3-amino-5-benzylaminophenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and R¹ is chloro;

R² is 3-amino->5benzylaminophenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethylamino)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethylamino)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethylamino)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethylamino)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethylamino)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3-amino-5-(2-phenylethylamino)phenyl, B is cyclobutyl, A is a bond, is 4-amidino-3-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethylamino)phenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzyloxyphenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzyloxyphenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzyloxyphenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzyloxyphenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzyloxyphenyl, B is cyclobutyl, A is a bond, Y^{0 0}is 4-amidinobenzyl, and R¹ is hydrido;

Y⁰ is 3-amnino-5-benzyloxyphenyl, B is cyclobutyl. A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-benzyloxyphenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethoxy)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethoxy)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethoxy)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² 3-amino-5-(2-phenylethoxy)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethoxy)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3-amino-5(2-phenylethoxy)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(2-phenylethoxy)phenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, B is cyclobutyl A is a bond,Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, B is cyclopropyl, A is a bond, Y⁰ is 4-amidino-2-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is hydrido;

R² is 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, B is cyclobutyl, A is a bond, Y⁰ is 4-amidino-3-fluorobenzyl, and R¹ is chloro;

R² is 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, B is cyclopentyl, A is a bond, Y⁰ is 4-amidinobenzyl, and R¹ is chloro.

Using the examples and methods described herein previously, the following additional examples having a guanidinoalkyl type Y^AT group could be prepared of the formula: wherein;

R² is phenyl, B is phenyl, A is CH₂CH₂, Y^AT is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and R¹ is hydrido;

R² is 3,5-diaminophenyl, B is phenyl, A is CH₂CH₂, Y^AT is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and R¹ is chloro;

R² is 3-carboxy-5-aminophenyl, B is phenyl, A is CH₂CH₂, Y^AT is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and R¹ is chloro;

R² is 3,5-diaminophenyl, B is isopropyl, A is a bond, Y^AT is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and R¹ is chloro;

R² is 3-carboxy-5-aminophenyl, B is isopropyl, A is a bond, Y^AT is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and R¹ is chloro;

R² is 3,5-diaminophenyl, B is cyclobutyl, A is a bond, Y^AT is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and R¹ is chloro;

R² is 3-carboxy-5-aminophenyl, B is cyclobutyl, A is a bond, Y^AT is 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, and R¹ is chloro.

Assays for Biological Activity

TF-VIIa Assay

In this assay 100 nM recombinant soluble tissue factor and 2nM recombinant human factor Vila are added to a 9well assay plate containing 0.4 mM of the substrate, N-Methylsulfonyl-D-phe-gly-ara-p-nitroaniline and either inhibitor or buffer (5 mM CaCl₂, 50 mM Tris-HCl, pH 8.0, 100 mM NaCl. 0.1% BSA). The reaction, in a final volume of 100 ul is measured immediately at 405 nm to determine background absorbance. The plate is incubated at room temperature for 60 min, at which time the rate of hydrolysis of the substrate is measured by monitoring the reaction at 405 nm for the release of p-nitroaniline. Percent inhibition of TF-VIIa activity is calculated from OD_405nm value from the experimental and control sample.

Xa Assay

Human factor Xa (0.3 nM) and 0.15 mM N-α-Benzyloxycarbonyl-D-arginyl-L-glycyl-L-arginine-p-nitroaniline-dihydrochloride (S-2765) are added to a 96-well assay plate containing either inhibitor or buffer (50 mM Tris-HCl, pH 8.0, 100 mM NaCl, 0.1% BSA). The reaction, in a final volume of 100 ul is measured immediately at 405 nm to determine background absorbance. The plate is incubated at room temperature for 60 min, at which time the rate of hydrolysis of the substrate is measured by monitorino the reaction at 405 nm for the release of p-nitroaniline. Percent inhibition of Xa activity is calculated from OD405 nm value from the experimental and control sample.

Thrombin Assay

Human thrombin (0.28 nM)and 0.06 mM H-D-Phenylalanyl-L-pipecolyl-L-arginine-p-nitroaniline dihydrochloride are added to a 96-well assay plate containing either inhibitor or buffer (50 mM Tris-HCl, pH 8.0, 100 mM NaCl, 0.1% BSA). The reaction, in a final volume of 100 ul is measured immediately at 405 nm to deterrnine background absorbance. The plate is incubated at room temperature for 60 min, at which time the rate of hydrolysis of the substrate is measured by monitorino the reaction at 405 nm for the release of p-nitroaniline.

Percent inhibition of thrombin activity is calculated from OD405 nm value from the experimental and control sample.

Trypsin Assay

Trypsin (5 ug/ml; type IX from porcine pancreas) and 0.375 mM N-α-Benzoyl-L-arginine-p-nitroanilide (L-BAPNA) are added to a 96-well assay plate containing either inhibitor or buffer (50 mM Tris-HCl, pH 8.0, 100 mM NaCl, 0.1% BSA). The reactions, in a final volume of 100 ul are measured immediately at 405 nm to determine background absorbance. The plate is incubated at room temperature for 60 min, at which time the rate of hydrolysis of the substrate is measured by monitoring the reaction at 405 nm for the release of p-nitroaniline. Percent inhibition of trypsin activity is calculated from OD_405nm value from the experimental and control sample.

Recombinant soluble TF, consisting of amino acids 1-219 of the mature protein sequence was expressed in E. coli and purified using a Mono Q Sepharose FPLC. Recombinant human VIIa was purchased from American Diagnostica, Greenwich Conn. and chromogenic substrate N-Methylsulfonyl-D-phe-gly-arg-p-nitroaniline was prepared by American Peptide Company, Inc., Sunnyvale, Calif. Factor Xa was obtained from Enzyme Research Laboratories, South Bend Ind., thrombin from Calbiochem, La Jolla, Calif., and trypsin and L-BAPNA from Sigma, St. Louis Mo. The chromiogenic substrates S-2765 and S-2238 were purchased from Chromogenix, Sweden.

Using bioassay procedures described herein, the biological activity of the compounds of Examples 1 through Example 109 and Tables 1 through Table 7 are summarized in Table 8 and Table 9.

TABLE 8
Inhibitory Activity of Pyrazinones toward TF-VIIA, Thrombin II,
Factor Xa, and Trypsin II.
	IC50 or %	IC50 or %	IC50 or %	IC50 or %
	Inhibition	Inhibition	Inhibition	Inhibition
Ex.	TF-VIIa	Thrombin	Factor Xa	Trpysin II
No.	(30 μM)	II (30 μM)	(30 μM)	(30 μM)
1	1	1	>100	0.2
2	5	0.4	>100	1
3	0.2	<0.04	1	0.4
4	0.3	0.1	3	0.5
5	7	1	4	1
6	0.1	<0.04	1	0.4
7	0.2	0.1	3	0.4
8	3	0.2	1	0.4
9	>30	30	>0	>30
10	>30	>0	>0	>30
11	91	<0.1	>100	1
12	>100	7	>100	1
13	>100	48	>100	14
14	>100	29	>100	0.3
15	>100	>100	>100	1
16	>100	13	>100	1
17	0.71	15.32	41%	0.24
18	47%	20%	0	1.13
19	0.8	0.22	22% @ 30	0.27
20	41% @ 30	4	6% @ 30	7
21	8% @ 30	26.8	21% @ 30	2
22	0% @ 30	47% @ 30	13% @ 30	1.7
23	1.7	17	38% @ 30	0.32
24	0% @ 30	46% @ 30	22% @ 30	1.3
25	7%	3%	4%	9%
26	1%	4%	5%	3%
27	12.5	>30	>30	16
28	3	>30	>30	0.23
29	pending	pending	pending	pending
30	pending	pending	pending	pending
31	22%	4%	4%	20%
32	12	0	0	0
33	4%	30	0	3.6
34	20%	0.59	0	1.3
35	29%	5%	10%	2.88
36	5%	31%	0	30%
37	1.8	1.9	0	0.3
38	0.9	0.58	22%	0.4
39	1.7	0.26	0	0.28
40	0.06	0	0	0.1
41	0.02	8	0	0.1
42	0.5	17%	0	0.53
43	0.25	43%	0	0.15
44	2.1	40%	4%	0.54
45	0.89	13	9%	0.25
46	0.98	18.7	10%	0.23
47	0.66	1.14	10.6	0.20
48	0.57	6.4	20%	0.38
49	0.57	6.4	28.9	0.19
50	0.50	14.2	39%	0.24
51	0.65	2.14	9.68	0.17
52	0.59	7.0	24.0	0.15
53	0.30	11.1	7%	0.15
54	11.3	0%	0%	0%
55	0.15	0.12	0%	0.18
56	16.7	3.13	0%	0.738
57	1.4	0.15	0%	0.22
58	0%	1%	1%	4%
59	0%	0%	2%	7%
60	0.901	>0.04	5.65	0.192
61	1%	0%	0%	10%
62	5.6	4%	10%	2.2
63	28%	6%	0	7
64	0.78	2	19%	0.07
65	0.36	2.8	12%	0.3
66	0.34	40%	0	0.28
67	0.20	4.25	0	0.14
68	32%	0%	6%	4.8
69	0.06	2.6	2.6	0.07
73	0.03	4.4	0	0.1
74	3.25	1.78	13%	0.15
75	0.21	2	9%	0.04
76	0.12	0	0	0.28
77	2.52	0.98	>30	1.13
78	0.43	0.3	16% @ 30	0.23
79	4.14	0.3	30% @ 30	0.15
80	1.29	4.55	29% @ 30	0.16
81	1	0.89	33% @ 30	0.22
82	20	4.67	32% @ 30	0.17
83	0.75	0.84	>30	0.36
84	3.03	0.5	>30	0.2
85	0.88	0.92	42% @ 30	0.19
86	0.07	0.9	26% @ 30	78 @ 1
87	0.07	1.5	>30	0.26
88	0.1	15	>30	0.27
89	5% @ 30	3% @ 30	5% @ 30	9% @ 30
90	0.02	8	16% @ 30	0.1
91	0.07	0.4	7	0.5
92	0.053	17.7	18% @ 30	0.25
93	0.07	15.4	>30	0.16
94	0.04	48% @ 30	>30	0.24
95	0.6	0.58	>30	0.21
96	0.26	6.39	>30	0.12
97	0.04	29% @ 30	>30	0.24
98	0.09	20% @ 30	10% @ 30	0.07
99	6% @ 30	0% @ 30	8% @ 30	7% @ 30
100	1.6	0.1	>30	62% @ 1
101	0.6	0.1	>30	83% @ 1
102	1.2	1	43% @ 30	0.39
103	0.3	1.3	11% @ 30	0.45
104	1.2	19	>30	0.7
105	0	17%	5%	0.49
106	1.11	28.8	30%	0.25
107	0.57	48%	35%	0.24
108	4.13	16%	20%	0.5
109	6.17	56%	10%	0.22
110	0.05	20%	15%	0.37
111	0.12	>30	>30	0.28
112	0.27	13	35	0.032
113	6.19	0.88	14	0.025
114	0.38	4.3	6.5	0.024
115	0.55	7.5	10%	0.04
116	1.2	27%	12%	0.19
117	0.033	21%	18%	0.022
118	0.052	3%	52.31	0.06
119	0.01	45%	26%	0.019
120	0.1	47% at 100 μM	43% at 100 μM	0.022
121	0.0095	44% at 83 μM	23% at 83 μM	0.017
122
123	0.02	1%	2%	0.09
124	0.016	4.68	17%	0.027
125	0.038	32% at 100 μM	36% at 100 μM	0.029
126	0.02	2%	10%	0.06
127	0.031	23%	27%	0.03
128-1	0.022	69 at 100 μM	25% at 100 μM	0.04
128-2	0.0256	60.2 at 100 μM	41% at 100 μM	0.056
128-3	0.0082	12.5 at 100 μM	40% at 100 μM	0.033
128-4	0.0107	24 at 100 μM	42% at 100 μM	0.051
128-5	0.0847	54.5 at 100 μM	43% at 100 μM	0.09
128-6	0.3323	40% at 100 μM	29% at 100 μM	0.481
128-7	0.242	43% at 100 μM	40% at 100 μM	0.229
128-8	0.067	75.2 at 100 μM	44% at 100 μM	0.104
128-9	0.007	45% at 100 μM	36% at 100 μM	0.041
128-10	0.009	73 at 100 μM	72 at 100 μM	0.051
128-11	0.0114	46% at 100 μM	35% at 100 μM	0.054
128-12	0.011	47% at 100 μM	33% at 100 μM	0.062
128-13	0.0491	36% at 100 μM	26% at 100 μM	0.181
128-14	0.0074	35.4 at 100 μM	24% at 100 μM	0.036
128-15	0.0066	13.3 at 100 μM	32% at 100 μM	0.036
128-16	0.007	10.2 at 100 μM	36% at 100 μM	0.037
128-17	0.0109	20.2 at 100 μM	41% at 100 μM	0.05
128-18	0.0185	21% at 100 μM	16% at 100 μM	0.094
128-19	0.0261	37% at 100 μM	18% at 100 μM	0.133
128-20	0.033	72 at 100 μM	39% at 100 μM	0.081
128-21	0.037	71 at 100 μM	45 at 100 μM	0.116
128-22	0.052	61 at 100 μM	49 at 100 μM	0.155
128-23	0.0337	48 at 100 μM	44 at 100 μM	0.078
128-24	0.0187	60.6 at 100 μM	44 at 100 μM	0.06
129	0.058 at 100	17 at 100 μM	22% at 100 μM	0.051 at 100
	μM			μM
130	0.18 at 100	72 at 100 μM	24% at 100 μM	0.044 at 100
	μM			μM
131	0.14 at 100	55 at 100 μM	21% at 100 μM	0.048 at 100
	μM			μM
132	0.21 at 100	42% at 100 μM	27% at 100 μM	0.065 at 100
	μM			μM
133	0.09 at 100	9 at 100 μM	22% at 100 μM	0.033 at 100
	μM			μM
134	0.051	100	34	0.033
135	6.4	16 at 100 μm	6% at 100 μM	1.6
136	10.7	>30 at 100 μM	15% at 100 μM	2.53
137	30	4% at 100 μM	4% at 100 μM	9.1
138	8%	39% at 100 μM	28% at 100 μM	0.7
139	4.71	35.81 at 100	41% at 100 μM	0.73
		μM
140	13.33	47.36 at 100	24% at 100 μM	1.17
		μM
141	2%	11% at 100 μM	13% at 100 μm	2%
142	0.2	4.6 at 100 μM	17 at 100 μM	0.125
143	43.21	54.45 at 100	30% at 100 μM	2.63
		μM
144	6.4	16 at 100 μM	6% at 100 μM	1.6
145	26.8	>30	3%	34%
146	30	>30	5%	21.6
147	5%	>30	>30	>30
148	7.03	4% @ 100 uM	8% @ 100 uM	33%
149	1.9	17%	2%	0.64
150	0.36	25	4%	0.28
151	0.23	29%	17%	0.38
152	28%	>30	>30	15%
153	12%	>30	8%	8%
154	7%	2%	6%	7%
155	1%	2%	11%	4%
156	27%	5%	7%	21%
157	0.7	35	64	0.09
158	10%	6%	>30	>30
159	5%	2%	9%	13%
160	18	9%	7%	27.6
161	88.4	7%	7%	90
162	35%	2%	2%	36%
163	40	4%	4%	59
164	24%	5%	2%	15%
165	63	5%	4%	83
166	63	5%	2%	81
1471-1	8.17	2.57	10%	0.79
1471-2	3.62	86% @ .04	10%	0
1471-3	13.59	6.31	0	1.29
1471-4	29.4	18.3	0	3.1
1471-5	8.69	0.09	12%	1.79
1471-6	2.85	63% @ .04	14%	0.68
1471-7	4.28	0.06	4%	0.87
1471-8	3.86	70% @ .04	27%	0.65
1471-9	0.77	7.63	29%	0.24
1471-	0.6	69% @ .04	45%	0.18
10
1471-	1.69	12.03	9%	0.93
11
1471-	7.97	37% @ 30	9%	0.93
12
1471-	1.47	0.33	0%	0.53
13
1471-	0.18	62% @ 04.	23	0.05
14
1471-	0.63	0.16	10%	0.24
15
1471-	0.82	0.1	23%	0.28
16
1471-	11.01	3.76	16	0.24
17
1471-	11.21	0.15	26%	0.8
18
1471-	33%	16.86	26%	1.6
19
1471-	42%	9.46	34%	0.57
20
1471-	8.18	0.08	30	0.24
21
1471-	14.56	0.32	28%	0.5
22
1471-	8.88	0.2	36%	0.28
23
1471-	10.05	0.05	23	0.27
24
1471-	2.45	24.47	31%	0.36
25
1471-	4.19	40%	16%	0.59
27
1471-	7.22	26.99	8%	0.39
28
1471-	2.18	0.67	21%	0.47
29
1471-	0.83	0.13	41%	0.08
30
1471-	1.98	0.72	17%	0.47
31
1471-	1.19	0.17	25%	0.23
32
1471-	31%	34%	22%	0.36
33
1471-	17.47	0.74	24%	0.25
34
1471-	37%	40%	22%	0.27
35
1471-	11%	15%	6%	0.74
36
1471-	39%	6.02	7%	0.43
37
1471-	24.38	3.92	18%	0.34
38
1471-	23.45	4.06	11%	0.29
39
1471-	40%	4.03	11%	0.47
40
1471-	18.33	25.8	34%	0.33
41
1471-	10.45	0.55	15%	0.45
42
1471-	25.26	34%	18%	0.44
43
1471-	34%	25%	13%	0.53
44
1471-	13.22	1.19	24%	0.27
45
1471-	13.02	1.76	21%	0.37
46
1471-	12.59	2.24	22%	0.41
47
1471-	15.7	0.92	17%	0.42
48
1471-	4.73	0.9	11%	0.67
57
1471-	12.44	76% @ .04	0%	4.03
58
1471-	7.52	1.95	0%	1.03
59
1471-	13.01	2.97	0%	1.52
60
1471-	5	0.04	0%	1.2
61
1471-	4%	24%	0%	>30
62
1471-	3.45	56% @ .04	2%	0.84
63
1471-	3.02	78% @ .04	2%	0.61
64
1471-	12%	27%	16%	0.82
67
1471-	10%	33%	12%	1.01
70
1471-	6%	24%	0%	2.58
71
1471-	15%	12.2	22%	0.72
72
1507-	6.3	18.9	16%	0.9
01
1507-	9.4	36%	9%	1.1
02
1507-	3.6	21	21%	0.8
03
1507-	29.5	9.5%	>30	9% @ 1
04
1507-	4.7	22	10%
05
1507-	20	0.5	>30	8% @ 1
06
1507-	25%	27	>30	7% @ 1
07
1507-	7%	10%	1%
08
1507-	22.6	0.97	13%	0.7
09
1507-	24%	39.5%	>30	7% @ 1
10
1507-	3	>0.04	>30	27% @ 1
11
1507-	6.7	0.6	>30	12% @ 1
12
1507-	26.7	6%	>30	8% @ 1
13
1507-	12	25%	>30	11% @ 1
15
1507-	5.8	21.3	18%	1
16
1507-	27.4	0.9	16%	2.8
17
1507-	10.6	10.6	>30	6% @ 1
18
1507-	12.9	45%	4%
19
1507-	20.9	10.5%	>30	11% @ 1
20
1507-	0.4	4.6	23%	0.36
21
1507-	45%	1.5%	>30	8% @ 1
22
1507-	28.9	11%	>30	11% @ 1
23
1507-	0%	7.5%	15%	25% @ 30
24
1507-	1.6	22.4	>30	60% @ 1
25
1507-	20.5	11.5%	>30	11% @ 1
26
1507-	38%	1.5	>30	1% @ 1
28
1507-	5.8	27%	4%
29
1507-	13.4	18.5	>30	0% @ 1
30
1507-	3.7	21.5%	>30	2% @ 1
31
1507-	21.3	16.5%	>30	0% @ 1
32
1507-	28.4	8.5%	>30	2% @ 1
33
1507-	8.5	20%	>30	0% @ 1
34
1507-	19.9	15.9	28%	0.49
35
1507-	13.8	18%	0%
36
1507-	16	34.5%	>30	0% @ 1
38
1507-	5.7	30	11%
40
1507-	48%	10.5%	17%	13.9
41
1507-	11.6	23.5%	>30	0% @ 1
42
1507-	4.1	7.1	21%	0.97
43
1507-	6	0.5	9%
44
1507-	7.3	1	>30	0% @ 1
45
1507-	4.3	36%	8%
46
1507-	17.6	37%	19%	1.6
47
1507-	18.3	14%	>30	11% @ 1
48
1512-	18	18%	4%
01
1512-	19.2	19%	3%
02
1512-	10.8	17%	8%
04
1512-	16.7	1.7	10%
05
1512-	12.6	23.6	4%
06
1512-	3.6	30	4%
07
1512-	30	22%	5%
11
1512-	11.3	10.5	5%
12
1512-	3.2	27.9	7%
14
1512-	20.9	23%	6%
15
1512-	6.5	34%	10%
16
1512-	39%	6%	4%
17
1512-	14.3	17%	3%
19
1512-	11.2	9%	8%
20
1512-	14.6	34%	6%
23
1512-	26.9	7%	5%
26
1512-	16.5	13%	3%
27
1512-	47%	8%	4%
29
1512-	43%	9%	14%
31
1512-	21.9	10%	5%
32
1512-	22.5	23%	4%
35
1512-	3.8	48%	9%
36
1512-	6	47%	4%
39
1512-	40%	9%	3%
40
1512-	30	4.4	4%
41
1512-	25	15%	1%
42
1512-	11	27%	9%
43
1512-	43%	20%	6%
44
1512-	27%	16%	11%
45
1512-	11.7	27.2	10%
46
1512-	3.5	0.3	13%
47
1515-	7	25%	>30	2.3
01
1515-	3.8	26%	>30	1.5
02
1515-	1.9	40%	>30	2.9
03
1515-	5.2	43%	>30	2.8
04
1515-	4	9.8	>30	0.9
05
1515-	1.7	6.2	>30	1.1
06
1515-	14.2	3.8	>30	1.2
07
1515-	11%	9%	>30	2
08
1515-	4.1	44%	>30	1.1
09
1515-	5.7	38%	>30	1.1
10
1515-	4.3	44%	>30	1.9
11
1515-	6.3	9%	>30	8.2
12
1515-	1.4	37%	>30	1.3
13
1515-	2.9	7%	>30	4
14
1515-	2.6	1%	>30	11.7
15
1515-	8.8	3%	>30	17.3
16
1515-	4.4	43%	>30	3.2
17
1515-	0.6	4.4	>30	1.1
18
1515-	24.2	9.4	>30	8.4
19
1515-	32%	36%	>30	1.2
20
1515-	4.2	25%	>30	2.7
22
1515-	6.2	18%	>30	8.5
23
1515-	1.6	22%	>30	6.7
24
1515-	2.9	3.5	>30	1.4
25
1515-	1.6	3.3	>30	1.3
26
1515-	1.1	2	>30	2
27
1515-	3	2.1	>30	2.4
28
1515-	5.2	1	>30	2.2
29
1515-	1.2	0.4	>30	1.2
30
1515-	8.1	0.1	>30	1.2
31
1515-	25%	6.3	>30	1.4
32
1515-	2.3	1.1	>30	1
33
1515-	4.4	2.4	>30	1.3
34
1515-	1.8	1.2	>30	1.1
35
1515-	2.7	8.6	>30	5.4
36
1515-	3.6	4	>30	1.6
37
1515-	1.8	2.5	>30	1.4
38
1515-	1.6	1.7	>30	2.3
39
1515-	4.4	1.7	>30	2.4
40
1515-	2.6	0.4	>30	1
41
1515-	1.8	0.5	>30	1.4
42
1515-	6.8	0.1	>30	1.1
43
1515-	30%	7.7	>30	1.4
44
1515-	2.9	1	>30	1.2
45
1515-	4.8	2	>30	1.3
46
1515-	3.1	1.6	>30	1.8
47
1515-	4.1	6.2	>30	4.1
48
1517-	1.2	1.8	0	0.38
01
1517-	9	36%	0	2
03
1517-	5.7	14.5	0	4.5
04
1517-	4.6	29.8	0	1.2
05
1517-	2.5	11.9	0	1.6
06
1517-	0.4	1.1	0	0.32
07
1517-	43%	30%	0	3.8
08
1517-	2.6	30%	0	1.5
09
1517-	2	38%	0	2.1
10
1517-	3	22%	0	1.9
11
1517-	0.8	18.1	0	2.1
12
1517-	0.6	0.1	0	0.28
13
1517-	30%	20%	0	8.4
14
1517-	3.1	5.3	0	1.5
15
1517-	3.4	26.1	0	5.1
16
1517-	1.8	4.1	0	0.85
17
1517-	1.3	1	0	0.98
18
1517-	0.9	0.1	0	0.4
19
1517-	22%	25%	0	7.3
20
1517-	2.3	4.3	0	1.4
23
1517-	1.8	1	0	0.84
24
1517-	1.4	16.5	0	0.72
25
1517-	1.8	2.1	0	0.32
26
1517-	0.9	1.2	0	0.3
29
1517-	9.1	19.9	0	0.69
31
1517-	0.4	5.2	0	0.21
33
1517-	33%	9%	0	23.6
35
1517-	3	28.1	0	0.61
36
1517-	0.4	3.7	0	0.28
37
1517-	0.7	8.7	0	0.33
38
1517-	0.7	20.4	0	0.43
39
1517-	1.2	6.4	0	0.37
40
1517-	2.2	16.6	0	0.59
41
1517-	25%	4%	0	43%
43
1517-	0.2	4	0	0.22
44
1517-	0.4	11.3	0	0.36
46
1517-	9.8	5.2	0	0.65
47
1517-	1.2	2.4	0	0.29
48
1522-	0.5	20	>30	0.2
02
1522-	0.6	10	>30	0.2
05
1522-	5.5	20	>30	0.3
06
1522-	0.47	1	>30	0.15
07
1522-	0.27	1	>30	0.1
08
1522-	0.2	3	>30	0.2
09
1522-	0.43	1	>30	0.2
11
1522-	0.81	8	>30	0.3
12
1522-	0.75	8	>30	0.2
13
1522-	0.84	8	>30	0.2
14
1522-	0.54	4	>30	0.2
15
1522-	0.62	1	>30	0.35
17
1522-	1.7	20	>30	0.2
18
1522-	13	>30	>30	0.3
19
1522-	5	>30	>30	0.2
20
1522-	0.72	3	>30	0.2
21
1522-	2.2	20	>30	0.3
23
1522-	6.3	20	>30	0.35
27
1522-	>30	>30	>30	2
28
1522-	6.4	8	>30	0.35
31
1522-	0.88	10	>30	0.2
33
1522-	0.5	8	>30	0.2
34
1522-	4	10	>30	0.35
35
1522-	1	10	>30	0.3
36
1522-	2	0.08	>30	0.3
37
1522-	1	0.1	>30	0.3
38
1522-	0.5	0.8	>30	0.2
40
1522-	0.5	10	>30	0.2
41
1522-	1	2	>30	0.15
42
1522-	0.8	20	>30	0.3
43
1522-	0.8	10	>30	0.2
44
1522-	1	10	>30	0.2
46
1522-	3	15	>30	2
47
1526-	0.02	13.13	>30	0.15
01
1526-	0.06	17.3	>30	0.15
03
1526-	0.03	18.08	>30	0.16
04
1526-	0.1	15	>30	0.19
05
1526-	0.17	12.04	>30	0.21
06
1526-	0.08	20.91	>30	0.19
07
1526-	0.03	11.23	>30	0.14
09
1526-	0.05	3.21	>30	0.15
11
1526-	0.04	28.41	>30	0.2
12
1526-	0.06	22.42	>30	0.2
13
1526-	0.04	7.63	>30	0.14
14
1526-	0.06	6.88	>30	0.15
15
1526-	0.04	5.6	>30	0.13
16
1526-	0.08	2.21	>30	0.17
17
1526-	0.04	16.97	>30	0.15
19
1526-	0.05	20.03	>30	0.18
21
1526-	0.03	9.45	>30	0.15
23
1526-	0.04	11.06	>30	0.17
24
1526-	0.14	40%	>30	0.19
25
1526-	0.06	14.27	>30	0.16
26
1526-	0.12	50%	>30	0.22
29
1526-	0.08	21.42	>30	0.2
30
1526-	0.26	29%	>30	0.24
33
1526-	0.1	17.85	>30	0.22
40
1526-	0.07	24.04	>30	0.16
41
1543-	0.64	26%	34%	0.06
03
1543-	0.06	27%	14%	0.07
05
1543-	0.21	24.56	19%	0.09
07
1543-	0.69	14%	12%	0.18
09
1543-	0.07	16.56	24%	0.04
11
1543-	0.09	41%	12%	0.06
13
1543-	0.95	45%	41%	0.14
15
1543-	0.22	37%	11%	0.08
19
1543-	0.29	17.12	27%	0.06
21
1543-	0.28	8.12	26%	0.05
25
1543-	0.38	24.6	27%	0.06
27
1543-	0.04	24.26	8%	0.06
31
1543-	0.03	19.34	14%	0.05
33
1543-	0.08	17.32	20%	0.06
34
1543-	0.07	23.61	8%	0.07
35
1543-	0.08	12.57	15%	0.05
36
1543-	1.23	16%	16%	0.12
37
1543-	0.09	18.26	14%	0.06
38
1543-	0.04	12.77	14%	0.05
39
1543-	0.04	11.45	10%	0.04
40
1543-	3%	0%	9%	6%
41
1543-	1%	0%	5%	8%
45
1543-	22%	0%	11%	18%
46

TABLE 9
Inhibitory Activity of Pyrazinones toward Factor Xa.
TF-VIIA, Thrombin II, and Trypsin II.
	%	%	%	%
	Inhibition	Inhibition	Inhibition	Inhibition
Example	TF-VIIa	Thrombin	Factor Xa	Trpysin II
Number	(100 νM)	II (100 νM)	(100 νM)	(100 νM)
E-0001	0	0	1	0
E-0002	0	0	0	0
E-0003	0	10	0	0
E-0004	0	6	0	0
E-0005	0	0	0	0
E-0006	2	0	0	1
E-0007	0	0	0	0
E-0008	0	−0.2	0	0
E-0009	0	8	1	1
E-0010	0	5	0	0
E-0011	0	0	0	0
E-0012	0	0	0	0
E-0013	0	2	0	1
E-0014	0	6	0	0
E-0015	0	3	0	3
E-0016	0	10	0	4
E-0017	0	10	0	1
E-0018	1	10	0	4
E-0019	0	9	0	2
E-0020	0	13	1	4
E-0021	0	9	1	5
E-0022	0	12	0	2
E-0023	0	5	0	1
E-0024	0	0	0	1
E-0025	0	13	0	3
E-0026	0	13	0	3
E-0027	0	10	0	2
E-0028	0	8	0	3
E-0029	0	8	0	2
E-0030	0	8	0	4
E-0031	0	4	0	1
E-0032	0	6	0	3
E-0033	0	6	0	5
E-0034	0	7	6	3
E-0035	4	12	0	2
E-0036	0	1	0	0
E-0037	0	5	0	2
E-0038	0	9	0	3
E-0039	0	9	1	2
E-0040	0	7	0	4
E-0041	0	8	0	2
E-0042	0	8	0	5
E-0043	0	12	0	3
E-0044	0	9	0	3
E-0045	0	7	0	4
E-0046	0	7	0	4
E-0047	0	9	0	2
E-0048	0	1	0	0
E-0049	2	0	0	0
E-0050	0	0	0	0
E-0051	0	0	0	0
E-0052	0	0	0	0
E-0053	0	0	0	0
E-0054	0	0	0	0
E-0055	0	0	0	0
E-0056	0	0	0	0
E-0057	0	0	6	0
E-0058	0	0	0	0
E-0059	0	0	0	0
E-0060	0	0	0	0
E-0061	0	0	0	0
E-0062	0	0	0	0
E-0063	0	0	0	0
E-0064	0	0	0	0
E-0065	0	0	0	0
E-0066	0	−0.2	0	0
E-0067	0	1	0	0
E-0068	0	3	0	0
E-0069	0	0	0	0
E-0070	0	0	0	0
E-0071	0	0	0	0
E-0072	0	0	0	0
E-0073	0	0	2	6
E-0074	0	0	0	8
E-0075	0	0	0	7
E-0076	0	0	1	10
E-0077	0	0	3	7
E-0078	0	3	1	10
E-0079	0	0	4	11
E-0080	1	0	4	5
E-0081	0	24	5	8
E-0082	4	0	4	3
E-0083	2	53	3	6
E-0084	0	0	0	8
E-0085	0	5	0	9
E-0086	0	0	4	11
E-0087	0	0	0	10
E-0088	0	0	3	9
E-0089	3	0	4	8
E-0090	0	0	2	11
E-0091	1	0	4	8
E-0092	1	0	3	9
E-0093	0	14	0	10
E-0094	2	0	2	7
E-0095	2	0	4	9
E-0096	0	5	0	10
E-0097	0	0	3	11
E-0098	0	0	2	8
E-0099	0	0	1	10
E-0100	7	0	6	12
E-0101	11	2	10	11
E-0102	0.4	0	3	13
E-0103	2	0	3	11
E-0104	3	0	5	9
E-0105	0	0	3	12
E-0106	5	0	3	9
E-0107	4	0	6	12
E-0108	0	0	4	12
E-0109	2	0	3	12
E-0110	0	0	3	14
E-0111	4	0	1	14
E-0112	11	0	1	13
E-0113	14	0	3	11
E-0114	10	0	3	14
E-0115	15	0	3	11
E-0116	13	0	4	10
E-0117	9	0	1	9
E-0118	12	0	3	9
E-0119	13	0	5	10
E-0120	8	0	1	9
E-0121	0	8	0.1	0
E-0122	0	8	0.1	0
E-0123	0	6	0.1	1
E-0124	0	6	0.1	0
E-0125	0	4	0.1	0
E-0126	0	4	0.1	0
E-0127	0	5	0.1	0
E-0128	0	7	0.1	0
E-0129	0	5	0.1	0
E-0130	0	2	0.1	0
E-0131	0	0	0.1	1
E-0132	0	0	0.1	0
E-0133	0	5	0.1	0
E-0134	0	5	0.1	1
E-0135	0	3	0.1	2
E-0136	0	3	0.1	1
E-0137	2	3	0.1	0
E-0138	1	4	0.1	3
E-0139	0	4	0.1	3
E-0140	0	4	0.1	2
E-0141	0	4	0.1	2
E-0142	1	5	0.1	3
E-0143	1	2	0.1	1
E-0144	0	0	0.1	1
E-0145	0	5	0.1	0
E-0146	0	8	0.1	0
E-0147	0	3	0.1	1
E-0148	0	5	0.1	3
E-0149	0	4	0.1	0
E-0150	0	6	0.1	2
E-0151	0	6	0.1	3
E-0152	0	6	0.1	4
E-0153	0	3	0.1	1
E-0154	0	5	0.1	3
E-0155	2	6	0.1	4
E-0156	0	−0.4	0.1	1
E-0157	0	5	0.1	0
E-0158	0	3	0.1	6
E-0159	0	4	0.1	1
E-0160	0	6	0.1	2
E-0161	0	6	0.1	1
E-0162	0	7	0.1	4
E-0163	0	5	0.1	0
E-0164	0	5	0.1	0
E-0165	0	7	0.1	0
E-0166	0	6	0.1	1
E-0167	0	4	0.1	1
E-0168	7	5	0.1	0
E-0169	0	2	0.1	1
E-0170	0	7	0.1	0
E-0171	0	9	0.1	2
E-0172	0	6	0.1	0
E-0173	0	5	0.1	1
E-0174	0	5	0.1	1
E-0175	0	6	0.1	2
E-0176	0	7	0.1	0
E-0177	0	6	0.1	0
E-0178	0	3	0.1	2
E-0179	0	10	0.1	0
E-0180	0	3	0.1	0
E-0181	0	5	0.1	3
E-0182	0	5	0.1	0
E-0183	0	5	0.1	2
E-0184	0	2	0.1	0
E-0185	0	3	0.1	2
E-0186	0	5	0.1	0
E-0187	0	8	0.1	1
E-0188	0	2	0.1	8
E-0189	0	6	0.1	1
E-0190	0	4	0.1	3
E-0191	0	6	0.1	0
E-0192	0	0	0.1	0
E-0193	0	5	0.1	0
E-0194	0	14	0.2	0
E-0195	0	1	0.1	0
E-0196	0	1	0.1	0
E-0197	0	3	0.1	1
E-0198	0	0	0.1	3
E-0199	0	1	0.1	2
E-0200	0	33	0.2	2
E-0201	0	1	0.1	1
E-0202	0	1	0.1	1
E-0203	0	5	0.1	2
E-0204	0	1	0.1	1
E-0205	0	1	0.1	2
E-0206	0	2	0.1	1
E-0207	0	2	0.1	1
E-0208	0	4	0.1	1
E-0209	1	3	0.1	3
E-0210	0	6	0.1	2

Claims

1. A compound of the Formula:

2. Compound of claim 1 of the Formula:

3. Compound of claim 2 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of hydrido, trialkylsilyl, C2-C8 alkyl, C3-C8 alkylenyl, C3-C8 alkenyl, C3-C8 alkynyl, and C2-C8 haloalkyl, wherein each member of group B is optionally substituted at any carbon up to and including 6 atoms from the point of attachment of B to A with one or more of the group consisting of R32, R33, R34, R35 and R36, R32, R33, R34, R35, and R36 are independently selected from the group consisting of hydrido, acetamido, haloacetamido, amidino, guanidino, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, amidosulfonyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, carboalkoxy, carboxy, carboxamido, cyano, and Qb; A is (CH(R15))pa—W7 wherein pa is an integer selected from 0 through 3 and W7 is selected from the group consisting of O, S, and N(R7) wherein R7 is hydrido or alkyl; R15 is selected from the group consisting of hydrido, hydroxy, halo, alkyl, and haloalkyl with the proviso that R15 is other than hydroxy or halo when R15 is on the carbon bonded directly to W7; R1 is selected from the group consisting of hydrido, alkyl, cyano, halo, haloalkyl, haloalkoxy, amino, aminoalkyl, alkylaamino, amidino, hydroxy, hydroxyamino, alkoxy, hydroxyalkyl, alkoxyamino, thiol, and alkylthio; R2 is Z0-Q; Z0 is a bond or (CR41R42)q wherein q is 1 or 2; R41 and R42 are independently selected from the group consisting of hydrido, hydroxy, and amino; Q is phenyl or a heteroaryl of 5 or 6 ring members, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R9, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R13, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R9, is optionally substituted by R10, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R13, is optionally substituted by R12, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by Rlo and R12, respectively, is optionally substituted by R11; R9, R10, R11, R12, and R13 are independently selected from the group consisting of hydrido, acetamido, haloacetamido, alkoxyamino, alkanoyl, haloalkanoyl, amidino, guanidino, alkylenedioxy, haloalkylthio, alkoxy, cycloalkoxy, cycloalkylalkoxy, aralkoxy, aryloxy, heteroaryloxy, heteroaralkoxy, heterocyclyloxy, heterocyclylalkoxy, hydroxy, amino, alkylamino, N-alkyl-N-arylamino, arylamino, aralkylamino, heteroarylamino, heteroaralkylamino, heterocyclylamino, heterocyclylalkylamino, alkylthio, alkylsulfinyl, arylsulfinyl, aralkylsulfinyl, cycloalkylsulfinyl, heteroarylsulfinyl, alkylsulfamido, alkylsulfonyl, arylsulfonyl, aralkylsulfonyl, cycloalkylsulfonyl, heteroarylsulfonyl, amidosulfonyl, alkyl, aryl, aralkyl, cycloalkyl, cycloalkylalkyl, heteroaryl, heterocyclyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, hydroxyhaloalkyl, aminoalkyl, carboalkoxy, carboxy, carboxyalkyl, carboxamido, and cyano; K is CHR4a wherein R4a is selected from the group consisting of hydrido, hydroxyalkyl, alkyl, alkoxyalkyl, alkylthioalkyl, and haloalkyl; E0 is selected from the group consisting of a bond, C(O)N(H), (H)NC(O), R(7)NS(O)2, and S(O)2N(R7); Y0 is selected from the group consisting of: (i) the formula:  wherein J5, J6, D5, D6 and the ring carbon atoms to which they are attached define a phenyl or 5- or 6-membered heteroaryl ring, T, wherein one of J5 and J6 is absent when T is a 5-membered heteroaryl ring, J5 is optionally substituted by R17 when J5 is a carbon atom, J6 is optionally substituted by R18 when J6 is a carbon atom, D5 is optionally substituted by R16 when D5 is a carbon atom and D6 is optionally substituted by R19 when D6 is a carbon atom; and (ii) Qb-Qss wherein Qss is (CH(R14))e—W2—(CH(R15))h, wherein e and h are independently 1 or 2 and W2 is CR4a═CH with the proviso that (CH(R14))e is bonded to E0; R16, R17, R18, and R19 are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, haloalkylthio, alkoxy, hydroxy, amino, alkoxyamino, alkylamino, alkylthio, alkylsulfinyl, alkylsulfonyl, alkanoyl, haloalkanoyl, alkyl, halo, haloalkyl, haloalkoxy, hydroxyalkyl, aminoalkyl, and cyano; Qb is selected from the group consisting of NR20R21, hydrido, N(R26)C(NR25)N(R23)(R24), and C(NR25)NR23R24, with the proviso that no more than one of R20 and R21 is selected from the group consisting of hydroxy, amino, alkylamino, and dialkylamino and with the further proviso that no more than one of R23 and R24 is selected from the group consisting of hydroxy, amino, alkylamino, and; R20, R21, R23, R24, R25, and R26 are independently selected from the group consisting of hydrido, alkyl, hydroxy, amino, alkylamino and dialkylamino; Qs is selected from the group consisting of a bond, (CR37R38)b wherein b is an integer selected from 1 through 3, and (CH(R14))c—W1—(CH(R5))d wherein c and d are independently 1 or 2 and W1 is selected from the group consisting of C(O)N(R14), (R14)NC(O), S(O), S(O)2, S(O)2N(R14), N(R14)S(O)2, and N(R14), with the proviso that R14 is selected from other than halo when directly bonded to N and with the further proviso that (CR37R38)b, and (CH(R14))e are bonded to E0; R14 is selected from the group consisting of hydrido, halo, alkyl, and haloalkyl; R37 and R38 are independently selected from the group consisting of hydrido, alkyl, and haloalkyl; and R38 is optionally aroyl or heteroaroyl.

4. Compound of claim 3 of the Formula:

5. Compound of claim 4 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of ethyl, 2-propenyl, 2-propynyl, propyl, isopropyl, —CH2CH2CH2—, —CH2CH2CH2CH2—, butyl, 2-butenyl, 3-butenyl, 2-butynyl, sec-butyl, tert-butyl, isobutyl, 2-methylpropenyl, 2,2,2-trifluoroethyl, 3,3,3-trifluoropropyl, and 2,2-difluoropropyl, wherein each member of group B is optionally substituted at any carbon up to and including 3 atoms from the point of attachment of B to A with one or more of the group consisting of R32, R33, and R34; R32, R33, and R34 are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, and cyano; A is selected from the group consisting of a bond, NH, and N(CH3); R1 is selected from the group consisting of hydrido, hydroxy, amino, amidino, hydroxyamino, aninomethyl, 1-aminoethyl, methylamino, dimethylamino, cyano, methyl, ethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, methoxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, methoxyamino, methylthio, ethylthio, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, and bromo; R2 is Z0-Q; Z° is a bond or CH2; Q is selected from the group consisting of phenyl and 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and 1,3,5-triazin-2-yl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R9, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R13, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R9, is optionally substituted by R10, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R13, is optionally substituted by R12, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R10 and R12, respectively, is optionally substituted by R11; R9, R11, and R13 are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, and cyano; R10 and R12 are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, carboxymethyl, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, N-benzylamidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl, N-(3-fluorobenzyl)amidocarbonyl, N-(2-trifluoromethylbenzyl)amidocarbonyl, N-(1-phenylethyl)amidocarbonyl, N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl, N-(2-chlorobenzyl)amidosulfonyl, N-isopropylamidocarbonyl, N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl, fluoro, chloro, bromo, cyano, cyclobutoxy, cyclohexoxy, cyclohexylmethoxy, 4-trifluoromethycyclohexylmethoxy, cyclopentoxy, benzyl, benzyloxy, 4-bromo-3-fluorophenoxy, 3-bromobenzyloxy, 4-bromobenzyloxy, 4-bromobenzylamino, 5-bromopyrid-2-ylmethylamino, 4-butoxyphenamino, 3-chlorobenzyl, 4-chlorophenoxy, 4-chloro-3-ethylphenoxy, 4-chloro-3-ethylbenzylamino, 4-chloro-3-ethylphenylamino, 3-chlorobenzyloxy, 4-chlorobenzyloxy, 4-chlorobenzylsulfonyl, 4-chlorophenylamino, 4-chlorophenylsulfonyl, 5-chloropyrid-3-yloxy, 2-cyanopyrid-3-yloxy, 2,3-difluorobenzyloxy, 2,4-difluorobenzyloxy, 3,4-difluorobenzyloxy, 2,5-difluorobenzyloxy, 3,5-difluorophenoxy, 3,5-difluorobenzyloxy, 4-difluoromethoxybenzyloxy, 2,3-difluorophenoxy, 2,4-difluorophenoxy, 2,5-difluorophenoxy, 3,5-dimethylphenoxy, 3,4-dimethylphenoxy, 3,4-dimethylbenzyloxy, 3,5-dimethylbenzyloxy, 4-ethoxyphenoxy, 4-ethylbenzyloxy, 3-ethylphenoxy, 4-ethylaminophenoxy, 3-ethyl-5-methylphenoxy, 4-fluorobenzyloxy, 2-fluoro-3-trifluoromethylbenzyloxy, 3-fluoro-5-trifluoromethylbenzyloxy, 4-fluoro-2-trifluoromethylbenzyloxy, 4-fluoro-3-trifluoromethylbenzyloxy, 2-fluorophenoxy, 4-fluorophenoxy, 2-fluoro-3-trifluoromethylphenoxy, 2-fluorobenzyloxy, 4-fluorophenylamino, 2-fluoro-4-trifluoromethylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, phenylamino, 1-phenylethoxy, 2-phenylethoxy, 2-phenylethyl, 2-phenylethylamino, phenylsulfonyl, 3-trifluoromethoxybenzyloxy, 4-trifluoromethoxybenzyloxy, 3-trifluoromethoxyphenoxy, 4-trifluoromethoxyphenoxy, 3-trifluoromethylbenzyloxy, 4-trifluoromethylbenzyloxy, 2,4-bis-trifluoromethylbenzyloxy, 3-trifluoromethylbenzyl, 3,5-bis-trifluoromethylbenzyloxy, 4-trifluoromethylphenoxy, 3-trifluoromethylphenoxy, 3-trifluoromethylthiobenzyloxy, 4-trifluoromethylthiobenzyloxy, 2,3,4-trifluorophenoxy, 2,3,5-trifluorophenoxy, 3-pentafluoroethylphenoxy, 3-(1,1,2,2-tetrafluoroethoxy)phenoxy, and 3-trifluoromethylthiophenoxy; Y0 is selected from the group consisting of: R16, R17, R18, and R19 are independently selected from the group consisting of hydrido, methyl, ethyl, isopropyl, propyl, carboxy, amidino, guanidino, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethylthio, methylsulfinyl, ethylsulfinyl, methylsulfonyl, ethylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, and cyano; Qb is selected from the group consisting of NR20R21, hydrido, C(NR25)NR23R24, and N(R26)C(NR25)N(R23)(R24), with the proviso that no more than one of R20, R21, R23, and R24 can be hydroxy, when any two of the group consisting of R20, R21, R23, and R24 are bonded to the same atom and with the further proviso that said Qb group is bonded directly to a carbon atom; R20, R21, R23, R24, R25, and R26 are independently selected from the group consisting of hydrido, methyl, ethyl, propyl, butyl, isopropyl, and hydroxy; and Qs is selected from the group consisting of a bond, CH2, and CH2CH2.

6. Compound of claim 4 of the Formula:

7. Compound of claim 6 or a pharmaceutically acceptable salt thereof, wherein; A is selected from the group consisting of CH2N(CH3), CH2N(CH2CH3), CH2CH2N(CH3), and CH2CH2N(CH2CH3); R1 is selected from the group consisting of hydrido, hydroxy, amino, amidino, hydroxyamino, aminomethyl, methylamino, cyano, methyl, trifluoromethyl, methoxy, hydroxymethyl, methoxyamino, methylthio, trifluoromethoxy, fluoro, and chloro; R2 is Z0-Q; Z0 is a bond or CH2; Q is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-benzylphenyl, 3-amino-5-(2-phenylethyl)phenyl, 3-amino-5-benzylaminophenyl, 3-amino-5-(2-phenylethylamino)phenyl, 3-amino-5-benzyloxyphenyl, 3-amino-5-(2-phenylethoxy)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, -amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamnidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 5-amino-2-fluorophenyl, 3-amino-5-hydroxymethylphenyl, 5-amino-3-methoxycarbonylphenyl, 3-amidinophenyl, 3-amino-2-methylphenyl, 5-amino-2-methylthiophenyl, 3-aminophenyl, 3-carboxyphenyl, 3-carboxy-5-hydroxyphenyl, 3-amino-5-carboxyphenyl, 3-chlorophenyl, 2-chlorophenyl, 3-cyanophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 2-fluorophenyl, 3-fluorophenyl, 2-hydroxyphenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 2-methoxyphenyl, 3-methoxyphenyl, 3-methoxyaminophenyl, 3-methoxycarbonylphenyl, 2-methylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-trifluoromethylphenyl, 2-trifluoromethylphenyl, 5-amino-2-thienyl, 5-amino-3-thienyl, 3-bromo-2-thienyl, 3-pyridyl, 4-pyridyl, 2-thienyl, and 3-thienyl; Y0 is selected from the group consisting of: R16 and R19 are independently selected from the group consisting of hydrido, amidino, amino, aminomethyl, methoxy, methylamino, hydroxy, hydroxymethyl, fluoro, chloro, and cyano; R17 and R18 are independently selected from the group consisting of hydrido, fluoro, chloro, hydroxy, hydroxymethyl, amino, carboxy, and cyano; Qb is C(NR25)NR23R24; R23, R24, and R25 are independently selected from the group consisting of hydrido and methyl; and Qs is CH2.

8. A compound as recited in claim 7 or a pharmaceutically acceptable salt thereof where said compound is selected from the group consisting of: 6-[3-aminophenyl]-5-chloro-N-[[4-aminoiminomethylphenyl]methyl]-3-[N,N-dimethylhydrazino]-2-oxo-1(2H)-pyrazineacetamide; 6-[3-aminophenyl]-5-chloro-3-[N-ethyl-N-methylhydrazino]-N-[[4-aminoiminomethylphenyl]methyl]-2-oxo-1(2H)-pyrazineacetamide; 6-[3-aminophenyl]-5-chloro-3-[N,N-diethylhydrazino]-N-[[4-aminoiminomethylphenyl]methyl]-2-oxo-1(2H)-pyrazineacetamide; 6-[3-amino-5-carboxyphenyl]-5-chloro-N-[[4-aminoiminomethylphenyl]methyl]-3-[N,N-dimethylhydrazino]-2-oxo-1(2H)-pyrazineacetamide; 6-[3-amino-5-carboxyphenyl]-5-chloro-3-[N-ethyl-N-methylhydrazino]-N-[[4-aminoiminomethylphenyl]methyl]-2-oxo-1(2H)-pyrazineacetamide; 6-[3-amino-5-carboxyphenyl]-5-chloro-3-[N,N-diethylhydrazino]-N-[[4-aminoiminomethylphenyl]methyl]-2-oxo-1(2H)-pyrazineacetamide; 6-[3,5-diaminophenyl]-5-chloro-N-[[4-aminoiminomethylphenyl]methyl]-3-[N,N-dimethylhydrazino]-2-oxo-1(2H)-pyrazineacetamide; 6-[3,5-diaminophenyl]-5-chloro-3-[N-ethyl-N-methylhydrazino]-N-[[4-aminoiminomethylphenyl]methyl]-2-oxo-1(2H)-pyrazineacetamide; 6-[3,5-diaminophenyl]-5-chloro-3-[N,N-diethylhydrazino]-N-[[4-aminoiminomethylphenyl]methyl]-2-oxo-1(2H)-pyrazineacetamide; 6-[3-amino-5-(N-benzylamidocarbonyl)phenyl]-5-chloro-N-[[4-aminoiminomethylphenyl]methyl]-3-[N,N-dimethylhydrazino]-2-oxo-1(2H)-pyrazineacetamide; 6-[3-amino-5-(N-benzylamidocarbonyl)phenyl]-5-chloro-3-[N-ethyl-N-methylhydrazino]-N-[[4-aminoiminomethylphenyl]methyl]-2-oxo-1(2H)-pyrazineacetamide; and 6-[3-amino-5-(N-benzylamidocarbonyl)phenyl]-5-chloro-3-[N,N-diethylhydrazino]-N-[[4-aminoiminomethylphenyl]methyl]-2-oxo-1(2H)-pyrazineacetamide.

9. Compound of claim 2 of the Formula:

10. Compound of claim 9 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of phenyl and 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and 1,3,5-triazin-2-yl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R32, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R36, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R32, is optionally substituted by R33, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R 36, is optionally substituted by R35, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R33 and R35, respectively, is optionally substituted by R34; R12, R33, R34, R35, and R36 are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, cyano, and Qb; A is selected from the group consisting of a bond, NH, N(CH3), N(OH), CH2, CH3CH, CF3CH, NHC(O), N(CH3)C(O), C(O)NH, C(O)N(CH3), CH2CH2, CH2CH2CH2, CH3CHCH2, and CF3CHCH2; R1 is selected from the group consisting of hydrido, hydroxy, amino, amidino, hydroxyamino, aminomethyl, 1-aminoethyl, methylamino, dimethylamino, cyano, methyl, ethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, methoxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, methoxyamino, methylthio, ethylthio, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, and bromo; R2 is Z0-Q; Z0 is selected from the group consisting of a bond, CH2, CH2CH2, O, S, NH, N(CH3), OCH2, SCH2, N(H)CH2, and N(CH3)CH2; Q is selected from the group consisting of phenyl and 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and 1,3,5-triazin-2-yl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R9, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R13, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R9, is optionally substituted by R10, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R13, is optionally substituted by R12, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R10 and R12, respectively, is optionally substituted by R11; R9, R11, and R13 are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, and cyano; R10 and R12 are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, carboxymethyl, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, N-benzylamidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl, N-(3-fluorobenzyl)amidocarbonyl, N-(2-trifluoromethylbenzyl)amidocarbonyl, N-(1-phenylethyl)amidocarbonyl, N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl, N-(2-chlorobenzyl)amidosulfonyl, N-ethylamidocarbonyl, N-isopropylamidocarbonyl, N-propylamidocarbonyl, N-isobutylamidocarbonyl, N-(2-butyl)amidocarbonyl, N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl, N-cyclohexylamidocarbonyl, fluoro, chloro, bromo, cyano, cyclobutoxy, cyclohexoxy, cyclohexylmethoxy, 4-trifluoromethycyclohexylmethoxy, cyclopentoxy, benzyl, benzyloxy, 4-bromo-3-fluorophenoxy, 3-bromobenzyloxy, 4-bromobenzyloxy, 4-bromobenzylamino, 5-bromopyrid-2-ylmethylamino, 4-butoxyphenamino, 3-chlorobenzyl, 4-chlorophenoxy, 4-chloro-3-ethylphenoxy, 4-chloro-3-ethylbenzylamino, 4-chloro-3-ethylphenylamino, 3-chlorobenzyloxy, 4-chlorobenzyloxy, 4-chlorobenzylsulfonyl, 4-chlorophenylamino, 4-chlorophenylsulfonyl, 5-chloropyrid-3-yloxy, 2-cyanopyrid-3-yloxy, 2,3-difluorobenzyloxy, 2,4-difluorobenzyloxy, 3,4-difluorobenzyloxy, 2,5-difluorobenzyloxy, 3,5-difluorophenoxy, 3,5-difluorobenzyloxy, 4-difluoromethoxybenzyloxy, 2,3-difluorophenoxy, 2,4-difluorophenoxy, 2,5-difluorophenoxy, ,5-dimethylphenoxy, 3,4-dimethylphenoxy, 3,4-dimethylbenzyloxy, 3,5-dimethylbenzyloxy, 4-ethoxyphenoxy, 4-ethylbenzyloxy, 3-ethylphenoxy, 4-ethylaminophenoxy, 3-ethyl-5-methylphenoxy, 4-fluorobenzyloxy, 2-fluoro-3-trifluoromethylbenzyloxy, 3-fluoro-5-trifluoromethylbenzyloxy, 4-fluoro-2-trifluoromethylbenzyloxy, 4-fluoro-3-trifluoromethylbenzyloxy, 2-fluorophenoxy, 4-fluorophenoxy, 2-fluoro-3-trifluoromethylphenoxy, 2-fluorobenzyloxy, 4-fluorophenylamino, 2-fluoro-4-trifluoromethylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, phenylamino, 1-phenylethoxy, 2-phenylethoxy, 2-phenylethyl, 2-phenylethylamino, phenylsulfonyl, 3-trifluoromethoxybenzyloxy, 4-trifluoromethoxybenzyloxy, 3-trifluoromethoxyphenoxy, 4-trifluoromethoxyphenoxy, 3-trifluoromethylbenzyloxy, 4-trifluoromethylbenzyloxy, 2,4-bis-trifluoromethylbenzyloxy, 3-trifluoromethylbenzyl, 3,5-bis-trifluoromethylbenzyloxy, 4-trifluoromethylphenoxy, 3-trifluoromethylphenoxy, 3-trifluoromethylthiobenzyloxy, 4-trifluoromethylthiobenzyloxy, 2,3,4-trifluorophenoxy, 2,3,5-trifluorophenoxy, 3-pentafluoroethylphenoxy, 3-(1,1,2,2-tetrafluoroethoxy)phenoxy, and 3-trifluoromethylthiophenoxy; Y0 is selected from the group consisting of: R16, R17, R18, and R19 are independently selected from the group consisting of hydrido, methyl, ethyl, isopropyl, propyl, carboxy, amidino, guanidino, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethylthio, methylsulfinyl, ethylsulfinyl, methylsulfonyl, ethylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, and cyano; Qb is C(NR25)NR23R24 or hydrido, with the proviso that no more than one of R23 and R24 is hydroxy; R23, R24, and R25 are independently selected from the group consisting of hydrido, methyl, ethyl, and hydroxy; and Qs is selected from the group consisting of a bond, CH2 and CH2CH2.

11. Compound of claim 10 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of 2-aminophenyl, 3-aminophenyl, 3-amidinophenyl, 4-amidinophenyl, 3-carboxyphenyl, 3-carboxy-5-hydroxyphenyl, 3-chlorophenyl, 4-chlorophenyl, 3,4-dichlorophenyl, 2-fluorophenyl, 3-fluorophenyl, 3,4-difluorophenyl, 3-hydroxyphenyl, 4-hydroxyphenyl, 3-methoxyaminophenyl, 3-methoxyphenyl, 4-methoxyphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoromethylphenyl, 2-imidazoyl, 2-pyridyl, 3-pyridyl, 5-chloro-3-trifluoromethyl-2-pyridyl, 4-pyridyl, 2-thienyl, 3-thienyl, and 3-trifluoromethyl-2-pyridyl; A is selected from the group consisting of CH2, CH3CH, CF3CH, NHC(O), CH2CH2, and CH2CH2CH2; R1 is selected from the group consisting of hydrido, hydroxy, amino, amidino, hydroxyamino, aminomethyl, methylamino, cyano, methyl, trifluoromethyl, methoxy, hydroxymethyl, methoxyamino, methylthio, trifluoromethoxy, fluoro, and chloro; R2 is Z0-Q; Z0 is selected from the group consisting of a bond, CH2, O, S, NH, N(CH3), OCH2, and SCH2; Q is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-benzylphenyl, 3-amino-5-(2-phenylethyl)phenyl, 3-amino-5-benzylaminophenyl, 3-amino-5-(2-phenylethylamino)phenyl, 3-amino-5-benzyloxyphenyl, 3-amino-5-(2-phenylethoxy)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 5-amino-2-fluorophenyl, 3-amino-5-hydroxymethylphenyl, 5-amino-3-methoxycarbonylphenyl, 3-amidinophenyl, 3-amino-2-methylphenyl, 5-amino-2-methylthiophenyl, 3-aminophenyl, 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, 3-carboxyphenyl, 3-carboxy-5-hydroxyphenyl, 3-amino-5-carboxyphenyl, 3-chlorophenyl, 2-chlorophenyl, 3-cyanophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 2-fluorophenyl, 3-fluorophenyl, 2-hydroxyphenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 2-methoxyphenyl, 3-methoxyphenyl, 3-methoxyaminophenyl, 3-methoxycarbonylphenyl, 2-methylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-trifluoromethylphenyl, 2-trifluoromethylphenyl, 5-amino-2-thienyl, 5-amino-3-thienyl, 3-bromo-2-thienyl, 3-pyridyl, 4-pyridyl, 2-thienyl, and 3-thienyl; Y0 is selected from the group consisting of: R16 and R19 are independently selected from the group consisting of hydrido, amidino, amino, aminomethyl, methoxy, methylamino, hydroxy, hydroxyrnethyl, fluoro, chloro, and cyano; R17 and R18 are independently selected from the group consisting of hydrido, fluoro, chloro, hydroxy, hydroxymethyl, amino, carboxy, and cyano; Qb is C(NR25)NR23R24 or hydrido; R13, R24, and R25 are independently hydrido or methyl; and Qs is CH2.

12. Compound of claim 9 of the Formula:

13. Compound of claim 12 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of phenyl, 2-thienyl, 3-thienyl, 2-furyl, 3-fuiryl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, and 5-isoxazolyl, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R32, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R36, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R32, is optionally substituted by R33, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R36, is optionally substituted by R35, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R33 and R35, respectively, is optionally substituted by R34; R32, R33, R34, R35, and R36 are independently selected from the group consisting of hydrido, amidino, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, amino, N-methylamino, dimethylamino, methoxyamino, methylthio, ethylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, hydroxymethyl, amidocarbonyl, carboxy, cyano, and Qb; A is selected from the group consisting of a bond, NH, N(CH3), CH2, CH3CH, and CH2CH2; R1 is selected from the group consisting of hydrido, hydroxy, hydroxymethyl, amino, aminomethyl, methylamino, cyano, methyl, trifluoromethyl, methoxy, methylthio, trifluoromethoxy, fluoro, and chloro; R2 is selected from the group consisting of phenyl and 2-thienyl, 2-furyl, 2-pyrrolyl, 2-imidazolyl, 2-thiazolyl, 3-isoxazolyl, 2-pyridyl, and 3-pyridyl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R9, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R13, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R9, is optionally substituted by R10, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R13, is optionally substituted by R12, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R10 and R12, respectively, is optionally substituted by R11; R9, R11, and R13 are independently selected from the group consisting of hydrido, methyl, ethyl, methoxy, ethoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, methylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, carboxy, and cyano; R10 and R12 are independently selected from the group consisting of hydrido, amidino, amidocarbonyl, N-methylamidocarbonyl, N-benzylamidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl, N-(3-fluorobenzyl)amidocarbonyl, N-(2-trifluoromethylbenzyl)amidocarbonyl, N-(1-phenylethyl)amidocarbonyl, N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl, N-(2-chlorobenzyl)amidosulfonyl, N-ethylamidocarbonyl, N-isopropylamidocarbonyl, N-propylamidocarbonyl, N-isobutylamidocarbonyl, N-(2-butyl)amidocarbonyl, N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl, N-cyclohexylamidocarbonyl, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, carboxy, carboxymethyl, amino, acetamido, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoroacetamido, aminomethyl, N-methylamino, dimethylamino, methoxyamino, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, methanesulfonamido, methoxycarbonyl, fluoro, chloro, bromo, and cyano; Y0 is selected from the group consisting of: R16, R17, R18, and R19 are independently selected from the group consisting of hydrido, methyl, ethyl, amidino, guanidino, methoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, methylthio, ethylthio, trifluoromethylthio, methylsulfinyl, methylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoromethoxy, fluoro, chloro, hydroxymethyl, carboxy, and cyano; Qb is NR20R21 or C(NR25)NR23R24; R20, R21, R23, R24, and R25 are independently selected from the group consisting of hydrido, methyl, and ethyl; and Qb is CH2.

14. Compound of claim 13 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of 2-aminophenyl, 3-aminophenyl, 3-amidinophenyl, 4-amidinophenyl, 3-carboxyphenyl, 3-carboxy-5-hydroxyphenyl, 3-chlorophenyl, 4-chlorophenyl, 3,4-dichlorophenyl, 2-fluorophenyl, 3-fluorophenyl, 3,4-difluorophenyl, 3-hydroxyphenyl, 4-hydroxyphenyl, 3-methoxyaminophenyl, 3-methoxyphenyl, 4-methoxyphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoromethylphenyl, 2-imidazoyl, 2-pyridyl, 3-pyridyl, 5-chloro-3-trifluoromethyl-2-pyridyl, 4-pyridyl, 2-thienyl, 3-thienyl, and 3-trifluoromethyl-2-pyridyl; A is CH2 or CH2CH2; R1 is selected from the group consisting of hydrido, hydroxy, hydroxymethyl, amino, aminomethyl, cyano, methyl, trifluoromethyl, and fluoro; R2 is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-phenylethyl)amidocarbonyl)phenyl, 3-axamino-5-(N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, -amino-5-(N-isopropylamidocarbonyl)phenyl, -amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 5-amino-2-fluorophenyl, 3-amino-5-hydroxymethylphenyl, 5-amino-3-methoxycarbonylphenyl, 3-amidinophenyl, 3-amino-2-methylphenyl, 5-amino-2-methylthiophenyl, 3-aminophenyl, 3-carboxyphenyl, 3-carboxy-5-aminophenyl, 3-carboxy-5-hydroxyphenyl, 3-carboxymethyl-5-aminophenyl, 3-carboxymethyl-5-hydroxyphenyl, 3-carboxymethylphenyl, 3-chlorophenyl, 2-chlorophenyl, 3-cyanophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 2-fluorophenyl, 3-fluorophenyl, 2,5-difluorophenyl, 2-hydroxyphenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 2-methoxyphenyl, 3-methoxyphenyl, 3-methoxyaminophenyl, 3-methoxycarbonylphenyl, 2-methylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-trifluoromethylphenyl, 2-trifluoromethylphenyl, 5-amino-2-thienyl, 5-amino-3-thienyl, 3-bromo-2-thienyl, 3-pyridyl, 4-pyridyl, 2-thienyl, and 3-thienyl; Y0 is selected from the group consisting of: R16 and R19 are independently selected from the group consisting of hydrido, amidino, amino, aminomethyl, methoxy, methylamino, hydroxy, hydroxymethyl, fluoro, chloro, and cyano; R17 and R18 are independently selected from the group consisting of hydrido, fluoro, chloro, hydroxy, hydroxymethyl, amino, carboxy, and cyano; Qb is C(NR25)NR23R24; R23, R24, and R25 are independently hydrido or methyl; and Qs iS CH2.

15. Compound of claim 14 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of 3-aminophenyl, 3-amidinophenyl, 4-amidinophenyl, 3-chlorophenyl, 4-chlorophenyl, 3,4-dichlorophenyl, 2-fluorophenyl, 4-methylphenyl, phenyl, 2-imidazoyl, 3-pyridyl, 4-pyridyl, and 3-trifluoromethyl-2-pyridyl; A is CH2 or CH2CH2; R1 is selected from the group consisting of hydrido, hydroxy, hydroxymethyl, amino, aminomethyl, cyano, methyl, trifluoromethyl, and fluoro; R2 is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 3-aminophenyl, 3-carboxy-5-aminophenyl, 3-chlorophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-bromo-2-thienyl, 2-thienyl, and 3-thienyl; and Y0 is selected from the group consisting of 5-amidino-2-thienylmethyl, 4-amidinobenzyl, 2-fluoro-4-amidinobenzyl, and 3-fluoro-4-amdinobenzyl.

16. Compound of claim 9 where said compound is selected from the group of the Formula:

17. Compound of claim 9 of the Formula:

18. Compound of claim 17 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of phenyl and 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, and 5-isoxazolyl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R32, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R36, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R32, is optionally substituted by R33, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R36, is optionally substituted by R35, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R33 and R35, respectively, is optionally substituted by R34; R32, R33, R34, R35, and R36 are independently selected from the group consisting of hydrido, amidino, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, amino, N-methylamino, dimethylamino, methoxyamino, methylthio, ethylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, hydroxymethyl, amidocarbonyl, carboxy, cyano, and Qb; A is selected from the group consisting of a bond, NH, N(CH3), CH2, CH3CH, and CH2CH2; R1 is selected from the group consisting of hydrido, hydroxy, hydroxymethyl, amino, aminomethyl, methylamino, cyano, methyl, trifluoromethyl, methoxy, methylthio, trifluoromethoxy, fluoro, and chloro; R2 is selected from the group consisting of phenyl and 2-thienyl, 2-furyl, 2-pyrrolyl, 2-imidazolyl, 2-thiazolyl, 3-isoxazolyl, 2-pyridyl, and 3-pyridyl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R9, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R13, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R9, is optionally substituted by R10, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R13, is optionally substituted by R12, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to-each of the ring atoms optionally substituted by R10 and R12, respectively, is optionally substituted by R11; R9, R11, and R13 are independently selected from the group consisting of hydrido, methyl, ethyl, methoxy, ethoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, methylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, carboxy, and cyano; R10 and R12 are independently selected from the group consisting of hydrido, amidino, guanidino, hydroxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, amino, aminomethyl, N-methylamino, dimethylamino, methoxyamino, cyclobutoxy, cyclohexoxy, cyclohexylmethoxy, 4-trifluoromethycyclohexylmethoxy, cyclopentoxy, benzyl, benzyloxy, 4-bromo-3-fluorophenoxy, 3-bromobenzyloxy, 4-bromobenzyloxy, 4-bromobenzylamino, 5-bromopyrid-2-ylmethylamino, 4-butoxyphenamino, 3-chlorobenzyl, 4-chlorophenoxy, 4-chloro-3-ethylphenoxy, 4-chloro-3-ethylbenzylamino, 4-chloro-3-ethylphenylamino, 3-chlorobenzyloxy, 4-chlorobenzyloxy, 4-chlorobenzylsulfonyl, 4-chlorophenylamino, 4-chlorophenylsulfonyl, 5-chloropyrid-3-yloxy, 2-cyanopyrid-3-yloxy, 2,3-difluorobenzyloxy, 2,4-difluorobenzyloxy, 3,4-difluorobenzyloxy, 2,5-difluorobenzyloxy, 3,5-difluorophenoxy, 3,5-difluorobenzyloxy, 4-difluoromethoxybenzyloxy, 2,3-difluorophenoxy, 2,4-difluorophenoxy, 2,5-difluorophenoxy, 3,5-dimethylphenoxy, 3,4-dimethylphenoxy, 3,4-dimethylbenzyloxy, 3,5-dimethylbenzyloxy, 4-ethoxyphenoxy, 4-ethylbenzyloxy, 3-ethylphenoxy, 4-ethylaminophenoxy, 3-ethyl-5-methylphenoxy, 4-fluorobenzyloxy, 2-fluoro-3-trifluoromethylbenzyloxy, 3-fluoro-5-trifluoromethylbenzyloxy, 4-fluoro-2-trifluoromethylbenzyloxy, 4-fluoro-3-trifluoromethylbenzyloxy, 2-fluorophenoxy, 4-fluorophenoxy, 2-fluoro-3-trifluoromethylphenoxy, 2-fluorobenzyloxy, 4-fluorophenylamino, 2-fluoro-4-trifluoromethylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, phenylamino, 1-phenylethoxy, 2-phenylethoxy, 2-phenylethyl, 2-phenylethylamino, phenylsulfonyl, 3-trifluoromethoxybenzyloxy, 4-trifluoromethoxybenzyloxy, 3-trifluoromethoxyphenoxy, 4-trifluoromethoxyphenoxy, 3-trifluoromethylbenzyloxy, 4-trifluoromethylbenzyloxy, 2,4-bis-trifluoromethylbenzyloxy, 3-trifluoromethylbenzyl, 3,5-bis-trifluoromethylbenzyloxy, 4-trifluoromethylphenoxy, 3-trifluoromethylphenoxy, 3-trifluoromethylthiobenzyloxy, 4-trifluoromethylthiobenzyloxy, 2,3,4-trifluorophenoxy, 2,3,5-trifluorophenoxy, 3-pentafluoroethylphenoxy, 3-(1,1,2,2-tetrafluoroethoxy)phenoxy, and 3-trifluoromethylthiophenoxy; Y0 is selected from the group consisting of: R16, R17, R18, and R19 are independently selected from the group consisting of hydrido, methyl, ethyl, amidino, guanidino, methoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, methylthio, ethylthio, trifluoromethylthio, methylsulfinyl, methylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoromethoxy, fluoro, chloro, hydroxymethyl, carboxy, and cyano; Qb is NR20R21 or C(NR25)NR23R24; R20, R21, R23, R24, and R25 are independently selected from the group consisting of hydrido, methyl, and ethyl; and Qs is CH2.

19. Compound of claim 18 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of 2-aminophenyl, 3-aminophenyl, 3-amidinophenyl, 4-amidinophenyl, 3-carboxyphenyl, 3-carboxy-5-hydroxyphenyl, 3-chlorophenyl, 4-chlorophenyl, 3,4-dichlorophenyl, 2-fluorophenyl, 3-fluorophenyl, 3,4-difluorophenyl, 3-hydroxyphenyl, 4-hydroxyphenyl, 3-methoxyaminophenyl, 3-methoxyphenyl, 4-methoxyphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoromethylphenyl, 2-imidazoyl, 2-pyridyl, 3-pyridyl, 5-chloro-3-trifluoromethyl-2-pyridyl, 4-pyridyl, 2-thienyl, 3-thienyl, and 3-trifluoromethyl-2-pyridyl; A is CH2 or CH2CH2; R1 is selected from the group consisting of hydrido, hydroxy, hydroxymethyl, amino, aminomethyl, cyano, methyl, trifluoromethyl, and fluoro; R2 is selected from the group consisting of 3-amino-5-benzylphenyl, 3-amino-5-(2-phenylethyl)phenyl, 3-amino-5-benzylaminophenyl, 3-amino-5-(2-phenylethylamino)phenyl, 3-amino-5-benzyloxyphenyl, 3-amino-5-(2-phenylethoxy)phenyl, 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, and 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl; Y0 is selected from the group consisting of: R16 and R19 are independently selected from the group consisting of hydrido, amidino, amino, aminomethyl, methoxy, methylamino, hydroxy, hydroxymethyl, fluoro, chloro, and cyano; R17 and R18 are independently selected from the group consisting of hydrido, fluoro, chloro, hydroxy, hydroxymethyl, amino, carboxy, and cyano; Qb is C(NR25)NR23R24; R23, R24, and R25 are independently hydrido or methyl; and Qs is CH2.

20. Compound of claim 19 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of 3-aminophenyl, 3-amidinophenyl, 4-amidinophenyl, 3-chlorophenyl, 4-chlorophenyl, 3,4-dichlorophenyl, 2-fluorophenyl, 4-methylphenyl, phenyl, 2-imidazoyl, 3-pyridyl, 4-pyridyl, and 3-trifluoromethyl-2-pyridyl; A is CH2 or CH2CH2; R1 is selected from the group consisting of hydrido, hydroxy, hydroxymethyl, amino, aminomethyl, cyano, methyl, trifluoromethyl, and fluoro; R2 is selected from the group consisting of 3-amino-5-benzylphenyl, 3-amino-5-(2-phenylethyl)phenyl, 3-amino-5-benzylaminophenyl, 3-amino-5-(2-phenylethylamino)phenyl, 3-amino-5-benzyloxyphenyl, 3-amino-5-(2-phenylethoxy)phenyl, 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, and 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl; and Y0 is selected from the group consisting of 5-amidino-2-thienylmethyl, 4-amidinobenzyl, 2-fluoro-4-amidinobenzyl, and 3-fluoro-4-amdinobenzyl.

21. Compound of claim 9 where said compound is selected from the group of the Formula:

22. Compound of claim 2 of the Formula:

23. Compound of claim 22 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, thiaetan-3-yl, norbomyl, 7-oxabicyclo[2.2. 1 ]heptan-2-yl, 2-morpholinyl, 3-morpholinyl, 4-morpholinyl, 1-piperazinyl, 2-piperazinyl, 1-piperidinyl, 2-piperidinyl, 3-piperidinyl, 4-piperidinyl, 1-pyrrolidinyl, 2-pyrrolidinyl, 3-pyrrolidinyl, 2-dioxanyl, 4H-2-pyranyl, 4H-3-pyranyl, 4H-4-pyranyl, 4H-pyran-4-one-2-yl, 4H-pyran-4-one-3-yl, 2-tetrahydrofuranyl, 3-tetrahydrofuranyl, 2-tetrahydropyranyl, 3-tetrahydropyranyl, 4-tetrahydropyranyl, 2-tetrahydrothienyl, and 3-tetrahydrothienyl, wherein (a) each ring carbon is optionally substituted with R33, (b) a ring carbon or nitrogen in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R9, (c) a ring carbon or nitrogen in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R13, (d) a ring carbon or nitrogen, if present, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R9, is optionally substituted by R10, and (e) a ring carbon or nitrogen, if present, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R13, is optionally substituted by R12; R9, R11, and R13 are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, and cyano; R10 and R12 are independently selected from the group consisting of hydrido, amidino, guanidino, carboxy, carboxymethyl, methyl, ethyl, propyl, isopropyl, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methanesulfonamido, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, N-benzylamidocarbonyl, N-(2-chlorobenzyl)amidocarbonyl, N-(3-fluorobenzyl)amidocarbonyl, N-(2-trifluoromethylbenzyl)amidocarbonyl, N-(1-phenylethyl)amidocarbonyl, N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl, N-(2-chlorobenzyl)amidosulfonyl, N-ethylamidocarbonyl, N-isopropylamidocarbonyl, N-propylamidocarbonyl, N-isobutylamidocarbonyl, N-(2-butyl)amidocarbonyl, N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl, N-cyclohexylamidocarbonyl, fluoro, chloro, bromo, cyano, cyclobutoxy, cyclohexoxy, cyclohexylmethoxy, 4-trifluoromethycyclohexylmethoxy, cyclopentoxy, benzyl, benzyloxy, 4-bromo-3-fluorophenoxy, 3-bromobenzyloxy, 4-bromobenzyloxy, 4-bromobenzylamino, 5-bromopyrid-2-ylmethylamino, 4-butoxyphenamino, 3-chlorobenzyl, 4-chlorophenoxy, 4-chloro-3-ethylphenoxy, 4-chloro-3-ethylbenzylamino, 4-chloro-3-ethylphenylamino, 3-chlorobenzyloxy, 4-chlorobenzyloxy, 4-chlorobenzylsulfonyl, 4-chlorophenylamino, 4-chlorophenylsulfonyl, 5-chloropyrid-3-yloxy, 2-cyanopyrid-3-yloxy, 2,3-difluorobenzyloxy, 2,4-difluorobenzyloxy, 3,4-difluorobenzyloxy, 2,5-difluorobenzyloxy, 3,5-difluorophenoxy, 3,5-difluorobenzyloxy, 4-difluoromethoxybenzyloxy, 2,3-difluorophenoxy, 2,4-difluorophenoxy, 2,5-difluorophenoxy, 3,5-dimethylphenoxy, 3,4-dimethylphenoxy, 3,4-dimethylbenzyloxy, 3,5-dimethylbenzyloxy, 4-ethoxyphenoxy, 4-ethylbenzyloxy, 3-ethylphenoxy, 4-ethylaminophenoxy, 3-ethyl-5-methylphenoxy, 4-fluorobenzyloxy, 2-fluoro-3-trifluoromethylbenzyloxy, 3-fluoro-5-trifluoromethylbenzyloxy, 4-fluoro-2-trifluoromethylbenzyloxy, 4-fluoro-3-trifluoromethylbenzyloxy, 2-fluorophenoxy, 4-fluorophenoxy, 2-fluoro-3-trifluoromethylphenoxy, 2-fluorobenzyloxy, 4-fluorophenylamino, 2-fluoro-4-trifluoromethylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, phenylamino, 1-phenylethoxy, 2-phenylethoxy, 2-phenylethyl, 2-phenylethylamino, phenylsulfonyl, 3-trifluoromethoxybenzyloxy, 4-trifluoromethoxybenzyloxy, 3-trifluoromethoxyphenoxy, 4-trifluoromethoxyphenoxy, 3-trifluoromethylbenzyloxy, 4-trifluoromethylbenzyloxy, 2,4-bis-trifluoromethylbenzyloxy, 3-trifluoromethylbenzyl, 3,5-bis-trifluoromethylbenzyloxy, 4-trifluoromethylphenoxy, 3-trifluoromethylphenoxy, 3-trifluoromethylthiobenzyloxy, 4-trifluoromethylthiobenzyloxy, 2,3,4-trifluorophenoxy, 2,3,5-trifluorophenoxy, 3-pentafluoroethylphenoxy, 3-(1,1,2,2-tetrafluoroethoxy)phenoxy, and 3-trifluoromethylthiophenoxy; R33 is selected from the group consisting of hydrido, amidino, guanidino, carboxy, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, methoxyamino, ethoxyamino, acetamido, trifluoroacetamido, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1 ,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, 2,2,2-trifluoro-1-hydroxyethyl, methoxycarbonyl, ethoxycarbonyl, amidocarbonyl, N-methylamidocarbonyl, N,N-dimethylamidocarbonyl, cyano, and Qb; A is selected from the group consisting of a bond, NH, N(CH3), N(OH), CH2, CH3CH, CF3CH, NHC(O), N(CH3)C(O), C(O)NH, C(O)N(CH3), CH2CH2, CH2CH2CH2, CH3CHCH2, and CF3CHCH2; R1 is selected from the group consisting of hydrido, hydroxy, amino, amidino, hydroxyamino, aminomethyl, 1-aminoethyl, methylamino, dimethylamino, cyano, methyl, ethyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, methoxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, methoxyamino, methylthio, ethylthio, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, and bromo; R2 is Z0-Q; Z0 is selected from the group consisting of a bond, CH2, CH2CH2, O, S, NH, N(CH3), OCH2, SCH2, N(H)CH2, and N(CH3)CH2; Q is selected from the group consisting of phenyl and 2-thienyl, 3-thienyl, 2-furyl, 3-furyl, 2-pyrrolyl, 3-pyrrolyl, 2-imidazolyl, 4-imidazolyl, 3-pyrazolyl, 4-pyrazolyl, 2-thiazolyl, 3-isoxazolyl, 5-isoxazolyl, 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazinyl, 2-pyrimidinyl, 4-pyrimidinyl, 5-pyrimidinyl, 3-pyridazinyl, 4-pyridazinyl, and 1,3,5-triazin-2-yl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R9, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R13, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R9, is optionally substituted by R10, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R13, is optionally substituted by R12, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R10 and R12, respectively, is optionally substituted by R11; Y0 is selected from the group consisting of: R16, R17, R18, and R19 are independently selected from the group consisting of hydrido, methyl, ethyl, isopropyl, propyl, carboxy, amidino, guanidino, methoxy, ethoxy, isopropoxy, propoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, N-ethylamino, methylthio, ethylthio, isopropylthio, trifluoromethylthio, methylsulfinyl, ethylsulfinyl, methylsulfonyl, ethylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, 2,2,3,3,3-pentafluoropropyl, trifluoromethoxy, 1,1,2,2-tetrafluoroethoxy, fluoro, chloro, bromo, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, and cyano; Qb is C(NR25)NR23R24 or hydrido, with the proviso that no more than one of R23 and R24 is hydroxy; R23, R24, and R25 are independently selected from the group consisting of hydrido, methyl, ethyl, and hydroxy; and Qs is selected from the group consisting of a bond, CH2 and CH2CH2.

24. Compound of claim 23 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of oxalan-2-yl, 1-pyrrolidinyl, 1-piperidinyl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, 7-oxabicyclo[2.2.1]heptan-2-yl, 2-morpholinyl, 3-morpholinyl, 4-morpholinyl, 1-piperazinyl, 2-piperazinyl, 1-piperidinyl, 2-piperidinyl, 3-piperidinyl, 4-piperidinyl, 1-pyrrolidinyl, 2-pyrrolidinyl, 3-pyrrolidinyl, 2-dioxanyl, 4H-2-pyranyl, 4H-3-pyranyl, 4H-4-pyranyl, 4H-pyran-4-one-2-yl, 4H-pyran-4-one-3-yl, 2-tetrahydrofuranyl, 3-tetrahydrofuranyl, 2-tetrahydropyranyl, 3-tetrahydropyranyl, 4-tetrahydropyranyl, 2-tetrahydrothienyl, and 3-tetrahydrothienyl; A is selected from the group consisting of a bond, CH2, NHC(O), CH2CH2, and CH2CH2CH2; R1 is selected from the group consisting of hydrido, hydroxy, amino, amidino, hydroxyamino, aminomethyl, methylamino, cyano, methyl, trifluoromethyl, methoxy, hydroxymethyl, methoxyamino, methylthio, trifluoromethoxy, fluoro, and chloro; R2 is Z0-Q; Z0 is selected from the group consisting of a bond, CH2, O, S, NH, N(CH3), OCH2, and SCH2; Q is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-benzylphenyl, 3-amino-5-(2-phenylethyl)phenyl, 3-amino-5-benzylaminophenyl, 3-amino-5-(2-phenylethylamino)phenyl, 3-amino-5-benzyloxyphenyl, 3-amino-5-(2-phenylethoxy)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, -amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, -amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 5-amino-2-fluorophenyl, 3-amino-5-hydroxymethylphenyl, 5-amino-3-methoxycarbonylphenyl, 3-amidinophenyl, 3-amino-2-methylphenyl, 5-amino-2-methylthiophenyl, 3-aminophenyl, 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl, 3-carboxyphenyl, 3-carboxy-5-hydroxyphenyl, 3-amino-5-carboxyphenyl, 3-chlorophenyl, 2-chlorophenyl, 3-cyanophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 2-fluorophenyl, 3-fluorophenyl, 2-hydroxyphenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 2-methoxyphenyl, 3-methoxyphenyl, 3-methoxyaminophenyl, 3-methoxycarbonylphenyl, 2-methylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-trifluoromethylphenyl, 2-trifluoromethylphenyl, 5-amino-2-thienyl, 5-amino-3-thienyl, 3-bromo-2-thienyl, 3-pyridyl, 4-pyridyl, 2-thienyl, and 3-thienyl; Y0 is selected from the group consisting of: R16 and R19 are independently selected from the group consisting of hydrido, amidino, amino, aminomethyl, methoxy, methylamino, hydroxy, hydroxymethyl, fluoro, chloro, and cyano; R17 and R18 are independently selected from the group consisting of hydrido, fluoro, chloro, hydroxy, hydroxymethyl, amino, carboxy, and cyano; Qb is C(NR25)NR23R or hydrido; R23, R24, and R25 are independently hydrido or methyl; and Qs is CH2.

25. Compound of claim 22 of the Formula:

26. Compound of claim 25 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of oxalan-2-yl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, 2-morpholinyl, 3-morpholinyl, 4-morpholinyl, 1-piperazinyl, 2-piperazinyl, 1-piperidinyl, 2-piperidinyl, 3-piperidinyl, 4-piperidinyl, 1-pyrrolidinyl, 2-pyrrolidinyl, 3-pyrrolidinyl, 2-dioxanyl, 2-tetrahydrofuiranyl, 3-tetrahydrofuiranyl, 2-tetrahydropyranyl, 3-tetrahydropyranyl, 4-tetrahydropyranyl, 2-tetrahydrothienyl, and 3-tetrahydrothienyl, wherein (a) each ring carbon is optionally substituted with R33, (b) a ring carbon or nitrogen in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R9, (c) a ring carbon or nitrogen in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R13, (d) a ring carbon or nitrogen, if present, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R9, is optionally substituted by R10, and (e) a ring carbon or nitrogen, if present, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R13, is optionally substituted by R12; R9, R11, and R13 are independently selected from the group consisting of hydrido, methyl, ethyl, methoxy, ethoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, methylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, carboxy, and cyano; R10 and R12 are independently selected from the group consisting of hydrido, amidino, amidocarbonyl, N-methylamidocarbonyl, N-benzylamidocarbonyl, N-(2-chlorobenzyl)arnidocarbonyl, N-(3-fluorobenzyl)amidocarbonyl, N-(2-trifluoromethylbenzyl)amidocarbonyl, N-(1-phenylethyl)amidocarbonyl, N-(1-methyl-1-phenylethyl)amidocarbonyl, N-benzylamidosulfonyl, N-(2-chlorobenzyl)amidosulfonyl, N-ethylamidocarbonyl, N-isopropylamidocarbonyl, N-propylamidocarbonyl, N-isobutylamidocarbonyl, N-(2-butyl)amidocarbonyl, N-cyclobutylamidocarbonyl, N-cyclopentylamidocarbonyl, N-cyclohexylamidocarbonyl, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, carboxy, carboxymethyl, amino, acetamido, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoroacetamido, aminomethyl, N-methylamino, dimethylamino, methoxyamino, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, methanesulfonamido, methoxycarbonyl, fluoro, chloro, bromo, and cyano; R33 is selected from the group consisting of hydrido, amidino, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, carboxy, amino, N-methylamino, dimethylamino, methoxyamino, methylthio, ethylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, hydroxymethyl, amidocarbonyl, cyano, and Qb; A is selected from the group consisting of a bond, NH, N(CH3), CH2, CH3CH, CH2CH2, and CH2CH2CH2; R1 is selected from the group consisting of hydrido, hydroxy, hydroxymethyl, amino, aminomethyl, methylamino, cyano, methyl, trifluoromethyl, methoxy, methylthio, trifluoromethoxy, fluoro, and chloro; R2 is selected from the group consisting of phenyl and 2-thienyl, 2-ftiryl, 2-pyrrolyl, 2-imidazolyl, 2-thiazolyl, 3-isoxazolyl, 2-pyridyl, and 3-pyridyl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R9, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R13, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R9, is optionally substituted by R10, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R13, is optionally substituted by R12, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R10 and R12, respectively, is optionally substituted by R11; Y0 is selected from the group consisting of: R16, R17, R18, and R19 are independently selected from the group consisting of hydrido, methyl, ethyl, anidino, guanidino, methoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, methylthio, ethylthio, trifluoromethylthio, methylsulfinyl, methylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoromethoxy, fluoro, chloro, hydroxymethyl, carboxy, and cyano; Qb is NR20R21 or C(NR25)NR23R24; R20, R21, R23, R24, and R25 are independently selected from the group consisting of hydrido, methyl, and ethyl; and Qs is CH2.

27. Compound of claim 26 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of oxalan-2-yl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, 1-pyrrolidinyl and 1-piperidinyl; A is selected from the group consisting of a bond, CH2, CH2CH2 and CH2CH2CH2; R1 is selected from the group consisting of hydrido, hydroxy, hydroxymethyl, amino, aminomethyl, cyano, methyl, trifluoromethyl, and fluoro; R2 is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amidocarbonyl-5-arninophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-ainino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylaimidocarbonyl)phenyl, 5-amino-2-fluorophenyl, 3-amino-5-hydroxymethylphenyl, 5-amino-3-methoxycarbonylphenyl, 3-amidinophenyl, 3-amino-2-methylphenyl, 5-amino-2-methylthiophenyl, 3-aminophenyl, 3-carboxyphenyl, 3-carboxy-5-aminophenyl, 3-carboxy-5-hydroxyphenyl, 3-carboxymethyl-5-aminophenyl, 3-carboxymethyl-5-hydroxyphenyl, 3-carboxymethylphenyl, 3-chlorophenyl, 2-chlorophenyl, 3-cyanophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 2-fluorophenyl, 3-fluorophenyl, 2,5-difluorophenyl, 2-hydroxyphenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 2-methoxyphenyl, 3-methoxyphenyl, 3-methoxyaminophenyl, 3-methoxycarbonylphenyl, 2-methylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-trifluoromethylphenyl, 2-trifluoromethylphenyl, 5-amino-2-thienyl, 5-amino-3-thienyl, 3-bromo-2-thienyl, 3-pyridyl, 4-pyridyl, 2-thienyl, and 3-thienyl; Y0 is selected from the group consisting of: R16 and R19 are independently selected from the group consisting of hydrido, amidino, amino, aminomethyl, methoxy, methylamino, hydroxy, hydroxymethyl, fluoro, chloro, and cyano; R17 and R18 are independently selected from the group consisting of hydrido, fluoro, chloro, hydroxy, hydroxymethyl, amino, carboxy, and cyano; Qb is C(NR25)NR23R21; R23, R24, and R25 are independently hydrido or methyl; and Qs is CH2.

28. Compound of claim 27 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of oxalan-2-yl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, and 1-piperidinyl; A is selected from the group consisting of a bond, CH2, CH2CH2 and CH2CH2CH2; R1 is selected from the group consisting of hydrido, hydroxy, hydroxymethyl, amino, aminomethyl, cyano, methyl, trifluoromethyl, and fluoro; R2 is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 3-aminophenyl, 3-carboxy-5-aminophenyl, 3-chlorophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, phenyl, 3-trifluoroacetainidophenyl, 3-bromo-2-thienyl, 2-thienyl, and 3-thienyl; and Y0 is selected from the group consisting of 5-amidino-2-thienylmethyl, 4-amidinobenzyl, 2-fluoro-4-amidinobenzyl, and 3-fluoro-4-amdinobenzyl.

29. Compound of claim 22 where said compound is selected from the group of the Formula:

30. Compound of claim 22 of the Formula:

31. Compound of claim 30 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of oxalan-2-yl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, 2-morpholinyl, 3-morpholinyl, 4-morpholinyl, 1-piperazinyl, 2-piperazinyl, 1-piperidinyl, 2-piperidinyl, 3-piperidinyl, 4-piperidinyl, 1-pyrrolidinyl, 2-pyrrolidinyl, 3-pyrrolidinyl, 2-dioxanyl, 2-tetrahydrofuranyl, 3-tetrahydrofuranyl, 2-tetrahydropyranyl, 3-tetrahydropyranyl, 4-tetrahydropyranyl, 2-tetrahydrothienyl, and 3-tetrahydrothienyl, wherein (a) each ring carbon is optionally substituted with R33, (b) a ring carbon or nitrogen in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R9, (c) a ring carbon or nitrogen in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R13, (d) a ring carbon or nitrogen, if present, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R9, is optionally substituted by R10, and (e) a ring carbon or nitrogen, if present, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R13, is optionally substituted by R12; R9, R11, and R13 are independently selected from the group consisting of hydrido, methyl, ethyl, methoxy, ethoxy, hydroxy, amino, N-methylamino, N,N-dimethylamino, methylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, N,N-dimethylamidosulfonyl, hydroxymethyl, 1-hydroxyethyl, amidocarbonyl, N-methylamidocarbonyl, carboxy, and cyano; R10 and R12 are independently selected from the group consisting of hydrido, amidino, guanidino, hydroxy, hydroxymethyl, 1-hydroxyethyl, 2-hydroxyethyl, amino, aminomethyl, N-methylamino, dimethylamino, methoxyamino, cyclobutoxy, cyclohexoxy, cyclohexylmethoxy, 4-trifluoromethycyclohexylmethoxy, cyclopentoxy, benzyl, benzyloxy, 4-bromo-3-fluorophenoxy, 3-bromobenzyloxy, 4-bromobenzyloxy, 4-bromobenzylamino, 5-bromopyrid-2-ylmethylamino, 4-butoxyphenamino, 3-chlorobenzyl, 4-chlorophenoxy, 4-chloro-3-ethylphenoxy, 4-chloro-3-ethylbenzylamino, 4-chloro-3-ethylphenylamino, 3-chlorobenzyloxy, 4-chlorobenzyloxy, 4-chlorobenzylsulfonyl, 4-chlorophenylamino, 4-chlorophenylsulfonyl, 5-chloropyrid-3-yloxy, 2-cyanopyrid-3-yloxy, 2,3-difluorobenzyloxy, 2,4-difluorobenzyloxy, 3,4-difluorobenzyloxy, 2,5-difluorobenzyloxy, 3,5-difluorophenoxy, 3,5-difluorobenzyloxy, 4-difluoromethoxybenzyloxy, 2,3-difluorophenoxy, 2,4-difluorophenoxy, 2,5-difluorophenoxy, 3,5-dimethylphenoxy, 3,4-dimethylphenoxy, 3,4-dimethylbenzyloxy, 3,5-dimethylbenzyloxy, 4-ethoxyphenoxy, 4-ethylbenzyloxy, 3-ethylphenoxy, 4-ethylaminophenoxy, 3-ethyl-5-methylphenoxy, 4-fluorobenzyloxy, 2-fluoro-3-trifluoromethylbenzyloxy, 3-fluoro-5-trifluoromethylbenzyloxy, 4-fluoro-2-trifluoromethylbenzyloxy, 4-fluoro-3-trifluoromethylbenzyloxy, 2-fluorophenoxy, 4-fluorophenoxy, 2-fluoro-3-trifluoromethylphenoxy, 2-fluorobenzyloxy, 4-fluorophenylamino, 2-fluoro-4-trifluoromethylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, 4-isopropylbenzyloxy, 3-isopropylphenoxy, 4-isopropylphenoxy, 4-isopropyl-3-methylphenoxy, phenylamino, 1-phenylethoxy, 2-phenylethoxy, 2-phenylethyl, 2-phenylethylamino, phenylsulfonyl, 3-trifluoromethoxybenzyloxy, 4-trifluoromethoxybenzyloxy, 3-trifluoromethoxyphenoxy, 4-trifluoromethoxyphenoxy, 3-trifluoromethylbenzyloxy, 4-trifluoromethylbenzyloxy, 2,4-bis-trifluoromethylbenzyloxy, 3-trifluoromethylbenzyl, 3,5-bis-trifluoromethylbenzyloxy, 4-trifluoromethylphenoxy, 3-trifluoromethylphenoxy, 3-trifluoromethylthiobenzyloxy, 4-trifluoromethylthiobenzyloxy, 2,3,4-trifluorophenoxy, 2,3,5-trifluorophenoxy, 3-pentafluoroethylphenoxy, 3-(1,1,2,2-tetrafluoroethoxy)phenoxy, and 3-trifluoromethylthiophenoxy; R33 is selected from the group consisting of hydrido, amidino, guanidino, methyl, ethyl, methoxy, ethoxy, hydroxy, carboxy, amino, N-methylamino, dimethylamino, methoxyamino, methylthio, ethylthio, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, fluoro, chloro, bromo, amidosulfonyl, N-methylamidosulfonyl, hydroxymethyl, amidocarbonyl, cyano, and Qb; A is selected from the group consisting of a bond, NH, N(CH3), CH2, CH3CH, CH2CH2, and CH2CH2CH2; R1 is selected from the group consisting of hydrido, hydroxy, hydroxymethyl, amino, aminomethyl, methylamino, cyano, methyl, trifluoromethyl, methoxy, methylthio, trifluoromethoxy, fluoro, and chloro; R2 is selected from the group consisting of phenyl and 2-thienyl, 2-furyl, 2-pyrrolyl, 2-imidazolyl, 2-thiazolyl, 3-isoxazolyl, 2-pyridyl, and 3-pyridyl heteroaryl rings, wherein (a) a ring carbon in a first alpha position relative to the ring carbon at the point of attachment is optionally substituted by R9, (b) a ring carbon in a second alpha position relative to the ring carbon at the point of attachment is optionally substituted by R13, (c) a ring carbon, in a first beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R9, is optionally substituted by R10, (d) a ring carbon, in a second beta position relative to the ring carbon at the point of attachment and in an alpha position relative to the ring atom optionally substituted by R13, is optionally substituted by R12, and (e) a ring carbon, if present, in the gamma position relative to the ring carbon at the point of attachment and in an alpha position relative to each of the ring atoms optionally substituted by R10 and R12, respectively, is optionally substituted by R11; Y0 is selected from the group consisting of: R16, R17, R18, and R19 are independently selected from the group consisting of hydrido, methyl, ethyl, amidino, guanidino, methoxy, hydroxy, amino, aminomethyl, 1-aminoethyl, 2-aminoethyl, N-methylamino, dimethylamino, methylthio, ethylthio, trifluoromethylthio, methylsulfinyl, methylsulfonyl, trifluoromethyl, pentafluoroethyl, 2,2,2-trifluoroethyl, trifluoromethoxy, fluoro, chloro, hydroxymethyl, carboxy, and cyano; Qb is NR20R21 or C(NR25)NR23R24; R20, R21, R23, R24, and R25 are independently selected from the group consisting of hydrido, methyl, and ethyl; and Qs is CH2.

32. Compound of claim 31 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of oxalan-2-yl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, 1-pyrrolidinyl and 1-piperidinyl; A is selected from the group consisting of a bond, CH2, CH2CH2 and CH2CH2CH2; R1 is selected from the group consisting of hydrido, hydroxy, hydroxymethyl, amino, aminomethyl, cyano, methyl, trifluoromethyl, and fluoro; R2 is selected from the group consisting of 3-amino-5-benzylphenyl, 3-amino-5-(2-phenylethyl)phenyl, 3-amino-5-benzylaminophenyl, 3-amino-5-(2-phenylethylamino)phenyl, 3-amino-5-benzyloxyphenyl, 3-amino-5-(2-phenylethoxy)phenyl, 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, and 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl; Y0 is selected from the group consisting of: R16 and R19 are independently selected from the group consisting of hydrido, amidino, amino, aminomethyl, methoxy, methylamino, hydroxy, hydroxymethyl, fluoro, chloro, and cyano; R17 and R18 are independently selected from the group consisting of hydrido, fluoro, chloro, hydroxy, hydroxymethyl, amino, carboxy, and cyano; Qb is C(NR25)NR23R24; R23, R24, and R25 are independently hydrido or methyl; and Qs is CH2.

33. Compound of claim 32 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of oxalan-2-yl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, and 1-piperidinyl; A is selected from the group consisting of a bond, CH2, CH2CH2 and CH2CH2CH2; R1 is selected from the group consisting of hydrido, hydroxy, hydroxymethyl, amino, aminomethyl, cyano, methyl, trifluoromethyl, and fluoro; R2 is selected from the group consisting of 3-amino-5-benzylphenyl, 3-amino-5-(2-phenylethyl)phenyl, 3-amino-5-benzylaminophenyl, 3-amino-5-(2-phenylethylamino)phenyl, 3-amino-5-benzyloxyphenyl, 3-amino-5-(2-phenylethoxy)phenyl, 3-amino-5-(4-trifluoromethylbenzylamino)phenyl, and 3-amino-5-(4-trifluoromethylbenzyloxy)phenyl; and Y0 is selected from the group consisting of 5-amidino-2-thienylmethyl, 4-amidinobenzyl, 2-fluoro-4-amidinobenzyl, and 3-fluoro-4-amdinobenzyl.

34. Compound of claim 2 of the Formula:

35. Compound of claim 34 of the Formula:

36. Compound of claim 35 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of: (i) 2-aminophenyl, 3-aminophenyl, 3-amidinophenyl, 4-amidinophenyl, 3-carboxyphenyl, 3-carboxy-5-hydroxyphenyl, 3-chlorophenyl, 4-chlorophenyl, 3,4-dichlorophenyl, 2-fluorophenyl, 3-fluorophenyl, 3,4-difluorophenyl, 3-hydroxyphenyl, 4-hydroxyphenyl, 3-methoxyaminophenyl, 3-methoxyphenyl, 4-methoxyphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoromethylphenyl, 2-imidazoyl, 2-pyridyl, 3-pyridyl, 5-chloro-3-trifluoromethyl-2-pyridyl, 4-pyridyl, 2-thienyl, 3-thienyl, and 3-trifluoromethyl-2-pyridyl; (ii) hydrido, ethyl, 2-propenyl, 2-propynyl, propyl, isopropyl, butyl, 2-butyl, (R)-2-butyl, S)-2-butyl, tert-butyl, isobutyl, 1-pentyl, 3-pentyl, 2-methylbutyl, 2,2,2-trifluoroethyl, 6-amidocarbonylhexyl, 4-methyl-2-pentyl, 3-hydroxypropyl, 1-methoxy-2-propyl, 2-methoxyethyl, 2-methyl-2-butyl, 3-methyl-2-butyl, 2-dimethylaminopropyl, 2-cyanoethyl, 6-hydroxyhexyl, 2-hydroxyethyl, 2-amidinoethyl, 2-guanidinoethyl, 3-guanidinopropyl, 4-guanidinobutyl, 3-hydroxypropyl, 4-hydroxybutyl, 6-cyanohexyl, 2-dimethylaminoethyl, 3-methylbutyl, 2-methylbutyl, (S)-2-methylbutyl, 3-aminopropyl, 2-hexyl, and 4-aminobutyl; and (iii) cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, oxalan-2-yl, 2-(2R)-bicyclo[2.2.1]-heptyl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, 1-pyrrolidinyl and 1-piperidinyl; A is selected from the group consisting of a bond, CH2, CH3CH, CH2CH2, and CH2CH2CH2; R1 is selected from the group consisting of hydrido, hydroxy, hydroxymethyl, amino, aminomethyl, cyano, methyl, trifluoromethyl, fluoro, and chloro; R2 is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-methyl-1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 5-amino-2-fluorophenyl, 3-amino-5-hydroxymethylphenyl, 5-amino-3-methoxycarbonylphenyl, 3-amidinophenyl, 3-amino-2-methylphenyl, 5-amino-2-methylthiophenyl, 3-aminophenyl, 3-carboxyphenyl, 3-carboxy-5-aminophenyl, 3-carboxy-5-hydroxyphenyl, 3-carboxymethyl-5-aminophenyl, 3-carboxymethyl-5-hydroxyphenyl, 3-carboxymethylphenyl, 3-chlorophenyl, 2-chlorophenyl, 3-cyanophenyl, 5-diaminophenyl, 3-dimethylaminophenyl, 2-fluorophenyl, 3-fluorophenyl, 2,5-difluorophenyl, 2-hydroxyphenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 2-methoxyphenyl, 3-methoxyphenyl, 3-methoxyaminophenyl, 3-methoxycarbonylphenyl, 2-methylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-trifluoromethylphenyl, 2-trifluoromethylphenyl, 5-amino-2-thienyl, 5-amino-3-thienyl, 3-bromo-2-thienyl, 3-pyridyl, 4-pyridyl, 2-thienyl, and 3-thienyl; YAT is Qb-Qs; Qs is selected from the group consisting of: [CH(benzoyl)](CH2)b, [CH(2-pyridylcarbonyl)](CH2)b, [CH(3-pyridylcarbonyl)](CH2)b, [CH(4-pyridylcarbonyl)](CH2)b, [CH(2-thienylcarbonyl)](CH2)b, [CH(3-thienylcarbonyl)](CH2)b, [CH(2-thiazolylcarbonyl)](CH2)b, [CH(4-thiazolylcarbonyl)](CH2)b, and [CH(5-thiazolylcarbonyl)](CH2)b, wherein b is an integer selected from 1 through 3, with the proviso that said benzoyl and said heteroaroyls are optionally substituted with one or more substituents selected from the group consisting of R16, R7, R18, and R19 with the proviso that R17 and R18 are optionally substituted at a carbon selected from other than the meta and para carbons relative to the carbonyl of the benzoyl or the heteroaroyl, and that said benzoyl or said heteroaroyl are bonded to the carbon directly bonded to amide nitrogen of the 1-(amidocarbonymethylene) group; R16 and R19 are independently selected from the group consisting of hydrido, amidino, amino, aminomethyl, methoxy, methylamino, hydroxy, hydroxymethyl, fluoro, chloro, and cyano; R17 and R18 are independently selected from the group consisting of hydrido, fluoro, chloro, hydroxy, hydroxymethyl, amino, carboxy, and cyano; Qb is N(R26)C(NR25)N(R23)(R24); and R23, R24, R25, and R26 are independently hydrido or methyl.

37. Compound of claim 36 or a pharmaceutically acceptable salt thereof, wherein; B is selected from the group consisting of: (i) 3-aminophenyl, 3-amidinophenyl, 4-amidinophenyl, 3-chlorophenyl, 4-chlorophenyl, 3,4-dichlorophenyl, 2-fluorophenyl, 4-methylphenyl, phenyl, 2-imidazoyl, 3-pyridyl, 4-pyridyl, and 3-trifluoromethyl-2-pyridyl; (ii) hydrido, ethyl, 2-propenyl, 2-propynyl, propyl, isopropyl, butyl, 2-butyl, (R)-2-butyl, (S)-2-butyl, tert-butyl, isobutyl, 1-pentyl, 3-pentyl, 2-methylbutyl, 2,2,2-trifluoroethyl, 6-amidocarbonylhexyl, 4-methyl-2-pentyl, 3-hydroxypropyl, 1-methoxy-2-propyl, 2-methoxyethyl, 2-methyl-2-butyl, 3-methyl-2-butyl, 2-dimethylaminopropyl, 2-cyanoethyl, 6-hydroxyhexyl, 2-hydroxyethyl, 2-amidinoethyl, 2-guanidinoethyl, 3-guanidinopropyl, 4-guanidinobutyl, 3-hydroxypropyl, 4-hydroxybutyl, 6-cyanohexyl, 2-dimethylaminoethyl, 3-methylbutyl, 2-methylbutyl, (S)-2-methylbutyl, 3-aminopropyl, 2-hexyl, and 4-aminobutyl; and (iii) cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, oxalan-2-yl, 2-(2R)-bicyclo[2.2.1]-heptyl, oxetan-3-yl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, and 1-piperidinyl; A is selected from the group consisting of a bond, CH2, CH2CH2 and CH2CH2CH2; R1 is selected from the group consisting of hydrido, hydroxy, hydroxymethyl, amino, aminomethyl, cyano, methyl, trifluoromethyl, and fluoro; R2 is selected from the group consisting of 3-amidocarbonyl-5-aminophenyl, 3-amino-5-(N-benzylamidocarbonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(3-fluorobenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(2-trifluoromethylbenzyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-(1-methyl-i -phenylethyl)amidocarbonyl)phenyl, 3-amino-5-(N-benzylamidosulfonyl)phenyl, 3-amino-5-(N-(2-chlorobenzyl)amidosulfonyl)phenyl, 3-amino-5-(N-ethylamidocarbonyl)phenyl, 3-amino-5-(N-isopropylamidocarbonyl)phenyl, 3-amino-5-(N-propylamidocarbonyl)phenyl, 3-amino-5-(N-isobutylamidocarbonyl)phenyl, 3-amino-5-(N-(2-butyl)amidocarbonyl)phenyl, 3-amino-5-(N-cyclobutylamidocarbonyl)phenyl, 3-amino-5-(N-cyclopentylamidocarbonyl)phenyl, 3-amino-5-(N-cyclohexylamidocarbonyl)phenyl, 3-aminophenyl, 3-carboxy-5-aminophenyl, 3-chlorophenyl, 3,5-diaminophenyl, 3-dimethylaminophenyl, 3-hydroxyphenyl, 3-methanesulfonylaminophenyl, 3-methylaminophenyl, 2-methylphenyl, 3-methylphenyl, phenyl, 3-trifluoroacetamidophenyl, 3-bromo-2-thienyl, 2-thienyl, and 3-thienyl; and YAT is selected from the group consisting of 5-guanidino-1-oxo-1-(2-thiazolyl)-2-pentyl, 5-guanidino-1-oxo-1-(4-thiazolyl)-2-pentyl, 5-guanidino-1-oxo-1-(5-thiazolyl)-2-pentyl, 5-guanidino-1-oxo-1-(4-amino-2-thiazolyl)-2-pentyl, and 5-guanidino-1-oxo-1-phenyl-2-pentyl.

38. Compound of claim 34 where said compound is selected from the group of the Formula:

39. A composition for inhibiting thrombotic conditions in blood comprising a compound of any one of claims 8, 16, 29, and 38 and a pharmaceutically acceptable carrier.

40. A composition for inhibiting thrombotic conditions in blood comprising a compound of any one of claims 1, 9, 17, and 30 and a pharmaceutically acceptable carrier.

41. A method for inhibiting thrombotic conditions in blood comprising adding to blood a therapeutically effective amount of a composition of any one of claims 39 and 40.

42. A method for inhibiting formation of blood platelet aggregates in blood comprising adding to blood a therapeutically effective amount of a composition of any one of claims 39 and 40.

43. A method for inhibiting thrombus formation in blood comprising adding to blood a therapeutically effective amount of a composition of any one of claims 39 and 40.

44. A method for treating or preventing venuous thromboembolism and pulmonary embolism in a mammal comprising administering to the mammal a therapeutically effective amount of a composition of any one of claims 39 and 40.

45. A method for treating or preventing deep vein thrombosis in a mammal comprising administering to the mammal a therapeutically effective amount of a composition of of any one of claims 39 and 40.

46. A method for treating or preventing cardiogenic thromboembolism in a mammal comprising administering to the mammal a therapeutically effective amount of a composition of any one of claims 39 and 40.

47. A method for treating or preventing thromboembolic stroke in humans and other mammals comprising administering to the mammal a therapeutically effective amount of a composition of any one of claims 39 and 40.

48. A method for treating or preventing thrombosis associated with cancer and cancer chemotherapy in humans and other mammals comprising administering to the mammal a therapeutically effective amount of a composition of any one of claims 39 and 40.

49. A method for treating or preventing unstable angina in humans and other mammals comprising administering to the mammal a therapeutically effective amount of a composition of any one of claims 39 and 40.

50. A method for inhibiting thrombus formation in blood comprising adding to blood a therapeutically effective amount of a compound of claim 2 with a therapeutically effective amount of fibrinogen receptor antagonist.