Azabicyclo and azacyclo oxime and amine cholinergic agents and methods of treatment

FIELD OF INVENTION
The present invention is a class of oximes and amines which are muscarinic agonists, rendering them useful as pharmaceutical agents. More specifically, the compounds are azabicyclic and azacyclic oximes and amines.
BACKGROUND
Disorders of cognition are generally characterized by symptoms of forgetfulness, confusion, memory loss, attentional deficits, and/or, in some cases, affective disturbances. These symptoms may arise as a result of the general aging process and/or from organic brain disease, cerebrovascular disease, head injury, or developmental or genetic defects.
The general decrease in cognitive function which accompanies the aging process is well accepted. The same phenomenon has been observed and documented in many lower mammals, including those routinely employed in pharmacological testing programs for screening and predicting usefulness for particular drugs in higher animals, including humans.
Although disorders of cognition often accompany the general aging process, presenile and senile primary degenerative dementia are the most common accepted causes of mental deterioration in the elderly. It has been estimated that at least 10 percent of persons over 60 years of age will eventually suffer severe mental deterioration. A much larger number will experience cognitive decline of sufficient severity to impede their activities.
Many of the symptoms of cognitive disorders, especially impaired memory, are associated with decreased acetylcholine synthesis and the impairment of cholinoreceptive neurons. In the hippocampus and cerebral cortex of patients suffering from primary degenerative dementia, for example, the level of the enzyme choline acetyltransferase (CAT) can be reduced by as much as 90% (see Davies, et al., The Lancet 1976;2:1403; Perry, et al., J. Neurol, Sci. 1977;34:247-265; and White, et al., The Lancet 1977;1:668-670).
Since CAT catalyzes the synthesis of acetylcholine from its precursors choline and acetyl coenzyme A, the loss of CAT reflects the loss of cholinergic, or acetylcholine-releasing, nerve endings in the hippocampus and cerebral cortex. There is abundant evidence that cholinergic terminals in the hippocampus are critically important for memory formation.
The cholinergic hypothesis suggests that drugs which restore acetylcholine levels or which mimic the action of acetylcholine (i.e., are cholinomimetic) are effective in correcting this deficit in neurotransmitter chemical and provide treatment of the memory impairment symptom of cerebral insufficiency. Considerable biochemical, pharmacological, and electrophysiological evidence supports the hypothesis that deficits in the cholinergic system underlie geriatric cognitive dysfunction (see Peterson C., Gibson G. E., Neurobiol. Aging 1983;4:25-30). Aged humans and nonhuman primates with decreased cognition show improved memory when they are treated, for example, with acetylcholinesterase inhibitors such as physostigimine. These agents increase the available supply of synaptic acetylcholine by inhibiting its hydrolysis.
Aminopyridines such as 3,4-diaminopyridine ameliorate age-related cognitive deficits by increasing the release of acetylcholine from presynaptic nerve terminals, thus increasing synaptic acetylcholine (see Davis H.P., et al., Exp. Aging Res. 1983;9:211-214).
It has been known for some time that the natural alkaloid, muscarine, has the ability to act relatively selectively at autonomic effector cells to produce qualitatively the same effects as acetylcholine. Two alkaloids, pilocarpine and arecoline (the methyl ester of 1,2,5,6-tetrahydro-1-methyl-3-pyridinecarboxylic acid), have the same principal sites of action as muscarine and acetylcholine and are thus classified as having "muscarinic" action. Although these naturally occurring alkaloids are of great value as pharmacological tools, present clinical use is largely restricted to the use of pilocarpine as a miotic agent.
Recently it has been demonstrated that arecoline is effective in ameliorating some of the symptoms of cognitive disorders in patients clinically diagnosed as having presenile primary degenerative dementia. Significant improvement was observed in a test of picture recognition after administration of arecoline to patients in a double-blind study (see Christie, et al., Brit. J. Psychiatry 1981;138:46-50).
The use of cholinomimetic agents in multiple clinical trials has documented both the potential therapeutic utility of cholinergic agents and the high incidence of unwanted side effects (see Hollander E., et al., Brit. Med. Bull. 1986;42:97-100). Many of these unwanted side effects result from the nonselective stimulation of cholinergic receptors (of the muscarinic type) located throughout the body. Muscarinic receptors have been classified pharmacologically and at the molecular level into several subtypes (see Bonner T., Trends Pharmacol, Sci. 1989;(Suppl. on Subtypes of Muscarinic Receptors IV):11-15). The receptors responsible for the central cognition-enhancing effects of muscarinic cholinomimetic agents are generally defined as M.sub.1 (pharmacological definition) or ml (molecular definition). Activation of peripheral M.sub.2 and M.sub.3 (or m2 and m3) receptors is thought to be responsible for the unwanted side effects of the currently available muscarinic agents (e.g., sweating, diarrhea, cramps, excessive salivation, etc). Thus, selective M.sub.1 (or ml) muscarinic agonists hold the best promise for selective improvement of cognitive function without the occurrence of unwanted side effects.
INFORMATION DISCLOSURE STATEMENT
Patent Cooperation Treaty patent application, PCT/US92/08642, published on Apr. 29, 1993 (International Publication Number WO 93/08192) describes azabicyclo, arylacetylene, and arylenyne oximes of the following formulas as cholinergic agents. ##STR1## wherein Ar is an aromatic group selected from phenoxy, phenyl, 2- or 3-thienyl, 2- or 3-furanyl, 2- or 3-pyrrolyl, 2-, 3-, or 4-pyridinyl wherein the aromatic group is substituted with 1 or 2substituents selected from straight or branched alkyl having from 1 to 4 carbon atoms, straight or branched alkoxy having from 1 to 4 carbon atoms, chlorine, bromine, fluorine, trifluoromethyl, nitro, hydroxy, trifluoromethoxy, amino, amino substituted with 1 or 2 straight or branched lower alkyl groups having from 1 to 4 carbon atoms;
R.sub.2 is hydrogen or Ar as defined above and the corresponding unsubstituted aromatic groups;
R.sub.1 is alkyl of 1 to 4 carbon atoms, preferably methyl.
Prior to the publication date of Apr. 29, 1993, the compounds were disclosed and supported in copending application Ser. No. 07/778,412 filed Oct. 16, 1991. Copending application Ser. No. 07/778,412 specifically provided for the racemate forms of the compounds related to (i), (ii), and (iii) and stated that enantiomeric forms were also within the scope of the invention.
Certain 3- or 4-ketoximes of 1-(lower alkyl)-1,2,5,6-tetrahydropyridines in which the oxygen is unsubstituted are disclosed in U.S. Pat. No. 3,004,979, having utility as parasympathomimetic agents acting on nonstriated muscle.
U.S. Pat. No. 4,710,508 describes O-substituted 1-(1,2,3,6-tetrahydro-1-methyl-3-pyridinyl)ketone oximes and O-substituted 1-(1,2,3,6-tetrahydro-4-pyridinyl)ketone oximes which are useful as analgesic agents or agents for the treatment of the symptoms of cerebral insufficiency characterized by decreased central acetylcholine production.
Dissertation Abstracts Int. B 1984;45(7):2120; CA102:l13440m describes oxime-O-ethers of the following formula as having anticholinergic properties: ##STR2## wherein R is F, Cl, Br, NO.sub.2, OCH.sub.3, CF.sub.3, or CH.sub.3. Particularly relevant are pages 128-136, 166, 167, 198-203.
French 2,086,292 describes 3-quinuclidinone oxime carbamates of the following formula having insecticidal and acaricidal activity. ##STR3## wherein R.sub.3 is alkyl, alkenyl, alkylidene, halogen, cyano, haloalkyl, haloalkenyl, alkoxy, etc; R.sub.1 and R.sub.2 are hydrogen, lower alkyl, acyl which may be substituted, lower alkenyl, or the group R--O--CH.sub.2 -- wherein R is methyl, ethyl, isopropyl; propyl-1,2-diene, allyl, 1-methyl-2-propenyl; phenyl or benzyl.
SUMMARY OF THE INVENTION
The present invention is directed to compounds of the following general Formulas I, II, III, and IV, and their enantiomers, or a pharmaceutically acceptable salt thereof. ##STR4##
wherein n is one or two;
wherein p is zero or one to four;
wherein each of R.sub.1 and R.sub.2 is hydrogen or straight or branched lower alkyl having from 1 to 4 carbon atoms;
wherein R.sub.3 is hydrogen, a straight or branched lower alkyl group having from 1 to 6 carbon atoms, hydroxy, a straight or branched lower alkoxy group having from 1 to 4 carbon atoms, acyloxy group wherein the acyl moiety has from 2 to 5 carbon atoms, or the group --(CH.sub.2).sub.q NR.sub.11 R.sub.12 wherein q is zero or 1 to 4 and each or R.sub.11 and R.sub.12 is the same or different and is hydrogen or a straight or branched lower alkyl group having from 1 to 4 carbon atoms; or cycloalkyl having from 3 to 6 carbon atoms;
wherein R is
(a) hydrogen;
(b) a straight or branched hydrocarbon chain having from 1 to 20 carbon atoms which is saturated or which is unsaturated and contains from 1 to 4 double and/or triple bonds;
(c) phenyl or phenyl substituted with 1 to 3 substituents selected from chlorine, bromine, fluorine, trifluoromethyl, hydroxy, trifluoromethoxy, straight or branched alkoxy having from 1 to 4 carbon atoms, straight or branched alkyl having from 1 to 4 carbon atoms, nitro, --NR.sub.4 R.sub.5 wherein each of R.sub.4 and R.sub.5 is hydrogen or a straight or branched alkyl group having from 1 to 4 carbon atoms;
(d) cycloalkyl having from 3 to 8 carbon atoms or a cycloalkenyl group having from 4 to 8 carbon atoms;
(e) a straight or branched hydrocarbon chain having from 1 to 20 carbon atoms which is saturated or which is unsaturated and contains from 1 to 4 double and/or triple bonds, and the terminal carbon of the hydrocarbon chain is substituted with a group selected from:
(i) a cycloalkyl group having from 3 to 8 carbon atoms or a cycloalkenyl group having from 4 to 8 carbon atoms;
(ii) an aromatic group selected from phenoxy, phenyl, 2- or 3-thienyl, 2- or 3-furanyl, 2- or 3-pyrrolyl, 2-, 3-, or 4-pyridinyl, 3- or 5-(1,2,4)-thiadiazolyl, 3-(1,2,5)-thiadiazolyl, 2-(1,3,4)-thiadiazolyl, 2-triazinyl, 3- or 5-(1,2,4)-oxadiazolyl, 2-(1,3,4)-oxadiazolyl, 3-(1,2,5)-oxadiazolyl, 3- or 5-thiadiazolyl, 2- or 5-pyrimidinyl, 3- or 4-pyridazinyl, 2-, 4-, or 5-thiazolyl, 2-, 4-, or 5-oxazolyl, or 2-pyrazinyl wherein the aromatic group is unsubstituted or is substituted with 1 or 2 substituents selected from straight or branched alkyl having from 1 to 4 carbon atoms, straight or branched alkoxy having from 1 to 4 carbon atoms, chlorine, fluorine, bromine, trifluoromethyl, nitro, hydroxy, trifluoromethoxy, or NR.sub.4 R.sub.5 wherein R.sub.4 and R.sub.5 have the meanings defined above,
(iii) --NR.sub.6 R.sub.7 wherein each of R.sub.6 and R.sub.7 is hydrogen, alkyl having from 1 to 4 carbon atoms, phenyl or benzyl, or --NR.sub.6 R.sub.7 taken together form a pyrrolidino, piperidino, piperazino, or morpholino ring;
(iv) ##STR5## wherein R.sub.6 and R.sub.7 have the meanings defined above; (v) ##STR6## wherein R.sub.8 is a straight or branched alkyl group having from 1 to 6 carbon atoms;
(vi) CN;
(vii) --CO.sub.2 R.sub.9 wherein R.sub.9 is hydrogen, a straight or branched hydrocarbon group having from 1 to 6 carbon atoms which is saturated or which is unsaturated and contains 1 or 2 double and/or triple bonds, or benzyl;
(viii) XR.sub.10 wherein X is oxygen or sulfur, and R.sub.10 is a straight or branched hydrocarbon chain having from 1 to 6 carbon atoms which is saturated or which is unsaturated and contains 1 or 2 double and/or triple bonds and is unsubstituted or is substituted with an alkoxy group having from 1 to 4 carbon atoms;
(ix) biphenylyl;
(f) the group --CH.sub.2 CH.sub.2 CH.dbd.C (Ph).sub.2 ; or
(g) the group ##STR7## the individual isomers as enantiomers and geometric isomers and pharmaceutically acceptable salts; with the proviso that the following compounds are excluded:
(a) compounds of Formula I wherein n is two, and R is hydrogen, --C(.dbd.O)NR.sub.6 R.sub.7 or --C(.dbd.O)R.sub.8 ; and
(b) compounds of Formulas III and IV wherein R is hydrogen.
Preferred compounds of the present invention are those of Formulas I and III with the compounds of Formula I being more preferred. More preferred compounds of Formula I are those wherein n is one, i.e., compounds of the following Formula V: ##STR8## In general Formula V, R, and R.sub.3 have the same meanings as set forth above for Formulas I, II, III, and IV. Compounds of Formula V wherein R.sub.3 is hydrogen and R is other than hydrogen or is other than group (c), (d), (f), or (g) are more preferred. Preferred are compounds wherein R is a straight or branched hydrocarbon chain which is saturated or unsaturated with 1 to 4 double and/or triple bonds having from 1 to 9 carbon atoms wherein the terminal carbon atom is unsubstituted or is substituted with group (e) (ii) as defined above. Illustrative of the preferred hydrocarbon groups which R may represent are the following: CH.sub.3 ; --CH.sub.2 C.tbd.C--Q; --CH.sub.2 C.tbd.CCH.sub.2 C.tbd.C--Q; --CH.sub.2 C.tbd.CCH.sub.2 C.tbd.CCH.sub.2 C.tbd.C--Q; and ##STR9## wherein * means the stereoconfiguration of the double bond may be E or Z and wherein Q is hydrogen or has the definition set forth at (e)(ii) for group R. Preferably, Q is hydrogen, phenyl, or substituted phenyl.
More preferably, the present invention is directed to compounds of the following general Formula V and pharmaceutically acceptable salts thereof, ##STR10## wherein R is selected from the group ##STR11## wherein Ar is an aromatic group selected from phenoxy, phenyl, 2- or 3-thienyl, 2- or 3-furanyl, 2- or 3-pyrrolyl, and 2-, 3-, or 4-pyridinyl; wherein the aromatic group is unsubstituted or substituted with 1 or 2 substituents selected from straight or branched alkyl having from 1 to 4 carbon atoms, straight or branched alkoxy having from 1 to 4 carbon atoms, chlorine, bromine, fluorine, trifluoromethyl, nitro, hydroxy, trifluoromethoxy, amino, amino substituted with 1 or 2 straight or branched lower alkyl groups having from 1 to 4 carbon atoms;
R.sub.12 is hydrogen or Ar as defined above;
R.sub.11 is hydrogen or alkyl of 1 to 4 carbon atoms, preferably methyl.
The compounds of the present invention may exist in either of two (Z and E) isomeric forms of the oxime, see below, and enantiomeric forms. The present invention includes both forms of the compounds as well as mixtures of the Z and E forms. Illustratively Formulas Va and lib depict the Z and E forms of the compounds of Formula V. Moreover, in those compounds in which there is a double bond in a carbon chain, both the Z and E forms of the olefins are included in the present invention. ##STR12##
Pharmaceutical compositions comprising compounds of Formulas I, II, III, IV, or V as defined herein are also included in the present invention as well as methods of using the compounds as analgesics and in the treatment of cognitive decline. The geometric isomers and their optical isomers and pharmaceutically acceptable salts of the compounds of Formula I, II, III, IV, and V are also included within the scope of the present invention.

DETAILED DESCRIPTION OF THE INVENTION
In the compounds depicted by general Formulas I, II, III, IV, and V, the various substituents are further described as follows. Illustrative examples of straight or branched lower alkyl having from 1 to 4 carbon atoms or from 1 to 6 carbon atoms included methyl, ethyl, n-propyl, isopropyl, n-butyl, tert-butyl, n-pentyl, n-hexyl.
Illustrative of lower alkoxy groups having from 1 to 4 carbon atoms are methoxy, ethoxy, and n-propoxy.
Illustrative examples of a saturated straight or branched hydrocarbon chain having from 1 to 20 carbon atoms include n-octyl, n-heptyl, dodecyl, tetradecyl, heptadecyl, etc, and all the illustrative examples of straight or branched lower alkyl groups having from 1 to 6 carbon atoms set forth above.
Illustrative examples of straight or branched unsaturated hydrocarbon chains which contain from 1 to 4 unsaturations which are double or triple bonds are ethenyl, 2,4-pentadienyl, 1,4-pentadienyl, 2,4-pentadiynyl, 1,4-pentadiynyl, 2-penten-4-ynyl, 2-pentyn-4-enyl, 2-propenyl, 3-butenyl, 1-methyl-2-propenyl, 2-pentenyl, 2-octenyl, 5-nonenyl, 4-undecenyl, 2-ethyl-3-butenyl, 4-hexenyl, 9,12-octadienyl, hexadecenyl, ethynyl, 2-propynyl, 1-methyl-2-propynyl, 1-ethyl-2-propynyl, 1-methyl-3-butynyl, 3-butynyl, or 4-pentynyl. Illustrative examples of cycloalkyl groups having from 3 to 6 carbon atoms are cyclopropyl, cyclobutyl, and cyclohexyl.
Pharmaceutically acceptable acid addition salts of the compounds of Formulas I, II, III, IV, and V are illustratively hydrochloric, sulfuric, phosphoric, acetic, benzoic, citric, malonic, salicylic, malic, fumaric, oxalic, succinic, tartaric, lactic, gluconic, ascorbic, maleic, aspartic, benzenesulfonic, methane and ethanesulfonic, hydroxyrnethane- and hydroxyethanesulfonic (see, for example, "Pharmaceutical Salts," J. Pharm. Sci. 1977;66(1):1-19).
Most preferred compounds of the present invention are those of Formula Va wherein R is as defined above. The most preferred compounds of this invention are those of Formula Va wherein R is of the Group R(i) or R(ii) in which R.sub.11 is methyl, R.sub.12 is Ar, and Ar is as defined above.
Illustrative of the most preferred hydrocarbon groups which R may represent are the following: --CH.sub.2 C.tbd.C--Ar and ##STR13## wherein * means the stereoconfiguration may be E or Z.
Most preferred Ar group is phenyl or phenyl substituted with 1 to 3 substituents selected from straight alkyl from 1 to 4 carbons, straight alkoxy having from 1 to 4 carbon atoms, chlorine, fluorine, bromine, trifluoromethyl, or trifluoromethoxy.
Most preferred R.sub.12 group is hydrogen, phenyl or phenyl substituted with 1 to 3 substituents selected from straight alkyl from 1 to 4 carbons, straight alkoxy having from 1 to 4 carbon atoms, chlorine, fluorine, bromine, trifluoromethyl, or trifluoromethoxy.
Particularly valuable are the following compounds:
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-methoxyphenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-methoxyphenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-methoxyphenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-methoxyphenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-methoxyphenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-methoxyphenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-methoxyphenyl)-2-propynyl)oxime;
Z -(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-methoxyphenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-methoxyphenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-chlorophenyl)-2-propynyl)oxime;
Z -(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-chlorophenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-chlorophenyl)-2-propynyl)oxime;
Z -(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-chlorophenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-chlorophenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-chlorophenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-chlorophenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-chlorophenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-chlorophenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-fluorophenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-fluorophenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-fluorophenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-fluorophenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-fluorophenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-fluorophenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-fluorophenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-fluorophenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-fluorophenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(Z-3-methyl-5-phenyl-2-penten-4-ynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(Z-3-methyl-5-phenyl-2-penten-4-ynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(Z-3-methyl-5-phenyl-2-penten-4-ynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-phenyl-2-penten-4-ynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-phenyl-2-penten-4-ynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-phenyl-2-penten-4-ynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(Z-3-methyl-2-penten-4-ynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(Z-3-methyl-2-penten-4-ynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(Z-3-methyl-2-penten-4-ynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl -2-penten-4-ynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-2-penten-4-ynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-2-penten-4-ynyl)oxime;
Also valuable are the following compounds:
E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(Z-3-methyl-5-phenyl-2-penten-4-ynyl)oxime;
E-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(Z-3-methyl-5-phenyl-2-penten-4-ynyl)oxime;
E-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(Z-3-methyl-5-phenyl-2-penten-4-ynyl)oxime;
E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-phenyl-2-penten-4-ynyl)oxime;
E-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-phenyl-2-penten-4-ynyl)oxime;
E-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-phenyl-2-penten-4-ynyl)oxime;
E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(Z-3-methyl-2-penten-4-ynyl)oxime;
E -(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(Z-3-methyl-2-penten-4-ynyl)oxime;
E-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(Z-3-methyl-2-penten-4-ynyl)oxime;
E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-2-penten-4-ynyl)oxime;
E-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-2-penten-4-ynyl)oxime; and
E-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-2-penten-4-ynyl)oxime.
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3',4'-dimethoxyphenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3',4'-dimethoxyphenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3',4'-dimethoxyphenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-methylphenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-methylphenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-methylphenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-methylphenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-methylphenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-methylphenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-methylphenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-methylphenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-methylphenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-trifluoromethylphenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-trifluoromethylphenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-trifluoromethylphenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-trifluoromethylphenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-trifluoromethylphenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-trifluoromethylphenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-trifluoromethylphenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-trifluoromethylphenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-trifluoromethylphenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-phenyl-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-phenyl-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-phenyl-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(3',4'-dichlorophenyl -2-penten-4-ynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(3',4'-dichlorophenyl -2-penten-4-ynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(3',4'-dichlorophenyl-2-penten-4-ynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-2-propynyl oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-2-propynyl oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-2-propynyl oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2,5-hexadiynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2,5-hexadiynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2,5-hexadiynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2,5,8-nonatriynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2,5,8-nonatriynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2,5,8-nonatriynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-ethoxyphenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-ethoxyphenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-ethoxyphenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-ethoxyphenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-ethoxyphenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-ethoxyphenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3',4'-methylenedioxyphenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3',4'-methylenedioxyphenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3',4'-methylenedioxyphenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3',4'-dichlorophenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3',4'-dichlorophenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3',4'-dichlorophenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3',5'-dichlorophenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3',5'-dichlorophenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3',5'-dichlorophenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3',5'-bis(trifluoromethyl) phenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3',5'-bis (trifluoromethyl)phenyl)-2-propynyl)oxime
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3',5'-bis (trifluoromethyl)phenyl)-2-propynyl)oxime
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-nitrophenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-nitrophenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-nitrophenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-nitrophenyl)-2-propynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-nitrophenyl)-2-propynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-nitrophenyl)-2-propynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(4'-methoxyphenyl)-2-penten-4-ynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(4'-methoxyphenyl)-2-penten-4-ynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(4'-methoxyphenyl)-2-penten-4-ynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-35-methyl-5-(3'-methoxyphenyl)-2-penten-4-ynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(3'-methoxyphenyl)-2-penten-4-ynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(3'-methoxylphenyl)-2-penten-4-ynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(2'-methoxylphenyl)-2-penten-4-ynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(2'-methoxylphenyl)-2-penten-4-ynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(2'-methoxylphenyl)-2-penten-4-ynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(3',4'-dimethoxyphenyl)-2-penten-4-ynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(3',4'-dimethoxyphenyl)-2-penten-4-ynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(3',4'-dimethoxyphenyl)-2-penten-4-ynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(3',4',5-trimethoxyphenyl)-2-penten-4-ynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(3',4',5-trimethoxyphenyl)-2-penten-4-ynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(3',4',5-trimethoxyphenyl)-2-penten-4-ynyl)oxime;
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(4'-methylphenyl)-2-penten-4-ynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(4'-methylphenyl)-2-penten-4-ynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(4'-methylphenyl)-2-penten-4-ynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(4'-chlorophenyl)-2-penten-4-ynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(4'-chlorophenyl)-2-penten-4-ynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(4'-chlorophenyl)-2-penten-4-ynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(4'-fluorophenyl)-2-penten-4-ynyl)oxime;
Z-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(4'-fluorophenyl)-2-penten-4-ynyl)oxime;
Z-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(4'-fluorophenyl)-2-penten-4-ynyl)oxime.
Compounds of Formula I wherein n is two may be depicted as set forth below in Formula VII: ##STR14## wherein R and R.sub.3 have the meanings defined above.
Compounds of Formula II wherein n is one may be depicted as set forth below in Formula VIII and wherein n is two may be depicted as set forth below in Formula IX: ##STR15## In Formulas VIII and IX the substituent groups represented by R.sub.3, R, and R.sub.1 have the meanings defined hereinabove in Formulas I, II, III, IV, and V.
In addition to the novel compounds of the present invention as represented by Formulas I through IX above, the present invention provides novel pharmaceutical preparations.
The present invention provides pharmaceutical compositions useful as analgesic agents comprising an analgesically effective amount of a compound as defined above in combination with a pharmaceutically acceptable carrier. In another aspect, the present invention provides a method of alleviating pain in a mammal comprising administering to a maximal in need of such treatment an analgesically effective amount of a compound as defined above in combination with a pharmaceutically acceptable carrier.
In another aspect, the present invention provides pharmaceutical compositions for treating the symptoms of senile cognitive decline comprising a cholinergically effective amount of a compound as defined above in combination with a pharmaceutically acceptable carrier. In yet another aspect, the present invention provides a method of treating the symptoms of senile cognitive decline in the elderly characterized by decreased cerebral acetylcholine production or release comprising administering to a patient in need of such treatment of cholinergically effective amount of a compound as defined above in combination with a pharmaceutically acceptable carrier.
The compounds of the present invention may exist in either of two Z and E isomeric and enantiomeric forms. The present invention includes both forms of the compounds as well as mixtures of the Z and E forms. Illustratively Formulas Va and Vb depict the Z and E forms of the compounds of Formula I. Moreover, in those compounds in which there is a double bond in a carbon chain, both the Z and E forms of the olefins are included in the present invention. ##STR16##
The compounds of Formulas I, III, and IV are prepared by reacting a ketone of the following Formulas XII, XIII, and XIV with an amine of the formula NH.sub.2 OR.HCl wherein R and R.sub.3 have the meanings defined in Formulas I, II, III, and IV as depicted below: ##STR17##
In each of the above depicted reactions, typically methanol is used as the solvent and the reaction is carried out at room temperature.
The compounds of Formula II are prepared by reducing Formula I compounds by procedures well known in the art, for example, by treatment with sodium cyanoborohydride under controlled pH conditions. Therefore, not only are the compounds of Formula I pharmaceutically useful they are also useful as starting material to make pharmaceutically useful compounds. Similarly, the compounds of Formula I wherein R is hydrogen may be used to prepare compounds of Formula I wherein R is the group --C(.dbd.O)R.sub.6, The compounds of Formula V are prepared by reacting a ketone of the following Formula XV with a hydroxylamine (as the free base or salt) of the formula NH.sub.2 OR wherein R has the meanings defined in Formula I as depicted below: ##STR18##
In the above depicted reaction, typically methanol is used as the solvent and the reaction is carried out at room temperature.
As discussed above, the compounds of Formulas I and V are prepared by reacting a ketone of the Formulas XII and XV, respectively, with hydroxylamine or an O-substituted hydroxylamine. Preferably, the ketones of Formulas XII and XV are prepared in accordance with Chart II provided herein wherein R.sub.3 and n are as defined above.
As illustrated in Chart II, a protecting group is placed on the nitrogen of a dihydroxy-substituted piperidine (1a). The protecting group my be any of those known to those of skill in the art. Preferably, the protecting group is a carbamate or a benzyl group. The primary alcohol of the protected dihydroxysubstituted piperidine (2a) is then activated by the addition of tosyl chloride at about 0.degree. C.
The resulting tosylated piperidine (3a) is then cyclized and the protecting group removed (alternatively, the protecting group can be removed and the (3a) cyclized). This step can involve using hydrogen and a 20% palladium on carbon catalyst in ethanol and heating; nevertheless, other procedures known to those of skill in the art which convert piperidine (3a) to intermediate (4a) can be employed. The resulting intermediate (4a) is obtained in racemic form.
The intermediate (4a) may be oxidized into the ketone of Formulas XII or XV (5a) i.e., by the Swern reaction, the resulting ketone (5a) being obtained in racemate form. Alternatively, the intermediate (4a) may be resolved into the 4R and 4S enantiomeric forms by the addition of tartaric acid or the like. Oxidation of the enantiomers results in enantiomeric ketones of Formulas XII and XIV (6a).
The salts of the final products are prepared by contacting the free base form of the compounds of this invention with a sufficient amount of the desired acid to produce the salt in the conventional manner. The free base forms may be regenerated, if desired, by treating the salt form with a base. For example, dilute aqueous solutions of such bases as sodium hydroxide, potassium carbonate, ammonia, and sodium bicarbonate maybe utilized for this purpose.
The free base forms of the compounds of this invention differ somewhat from their respective salt forms in such physical properties as melting point and solubility in polar solvents, but the salts are otherwise equivalent to their respective free acid or base forms for the purposes of the invention.
The starting materials represented by Formulas XII, XIII, XIV, and XV are known in the art or can be prepared by procedures generally known in the art (see, for example, Saunders J, et al., J. Chem, Soc., Chem. Comm. 1988:1618 and Snow R. J., Street L. J., Tet. Lett. 1989;30:5795). Also, the hydroxylamines represented by NR.sub.2 OR are commercially available or may be prepared by procedures generally known in the art. For example, the amines or hydroxylaxnines can be prepared by reacting an N-hydroxyphthalimide with an appropriate alcohol and hydrolyzing the resultant intermediate using methylhydrazine. Similarly, the N-hydroxyphthalimide can be reacted with an appropriate aliphatic or alicyclic bromide. The examples and preparations set forth below illustrate the synthesis of the compound of this invention.
EXAMPLE 1
(.+-.)-1-Azabicylo[2.2.1]heptan-3-one oxime hydrochloride
1-Azabicyclo[2.2.1]heptan-3-one was prepared by the procedure described in J, Chem, Soc., Chem. Comm., 1988:1618.
1-Azabicyclo[2.2.1]heptan-3-one (2 g, 18 mmol) and hydroxylamine hydrochloride (1.25 g, 18 mmol) were dissolved in 10 mL MeOH and stirred at room temperature for 18 hours. The reaction mixture was concentrated in vacuo. The crystalline residue was recrystallized from ethanol to afford 2.04 g (70%) of the title product, mp 211.degree. C.
Analysis calculated for C.sub.6 H.sub.11 ClN.sub.2 O: C, 44.31; H, 6.82; N, 17.23. Found: C, 44.25; H, 6.64; N, 17.18. Mass Spec.: m/e 126.1 (M+ for free base). .sup.1 H NMR: .delta.(CDCl.sub.3) 0.87 (1H, m), 1.31-1.46 (1H, m), 2.39-2.57 (5H, m), 3.01-3.21 (2H, m), 10.15 (1H, s), 10.58-10.82 (1H, br s). .sup.13 C NMR: .delta.(CDCl.sub.3) 25.2, 40, 50.5, 54.5, 58.5, 153.5.
EXAMPLE 2
(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-ethyl oxime hydrochloride
1-Azabicyclo[2.2.1]heptan-3-one (2 g, 18 mmol) was dissolved in 25 mL of methanol. Ethoxyamine hydrochloride (1.76 g, 18 mmol) was added and the reaction was stirred at room temperature for 18 hours. The reaction was concentrated in vacuo to afford a yellow solid. The residue was dissolved in water, basified with saturated aqueous potassium carbonate, and extracted with dichloromethane (3.times.150 mL). The combined extracts were dried over anhydrous sodium sulfate and concentrated in vacuo to afford a clear, yellow liquid. The liquid was dissolved in diethyl ether and filtered through Celite. The filtrate was treated with ethereal hydrogen chloride to yield 2.5 g (75%) of the title product, mp 158.degree.-160.degree. C.
Analysis calculated for C.sub.8 H.sub.15 ClN.sub.2 O: C, 50.39; H, 7.93; N, 14.69 . Found: C, 49.96; H, 7.76; N, 14.56. Mass Spec.: m/e 154.1 (M+ for free base). .sup.1 H NMR: .delta.(CDCl.sub.3) 1.20-1.28 (3H, t), 1.97-2.05 (1H, m), 240-253 (1H, m), 3.29-3.42 (2H, m), 3.52-3.62 (2H, m), 3.83-3.95 (2H, m), 4.06-4.14 (2H, q), 4.20-4.27 (1H, m) . .sup.13 C NMR: .delta.(CDCl.sub.3) 14.4, 26.1, 40, 51.7, 55.8, 59.6, 70.3, 153.1.
EXAMPLE 3
(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-methyl oxime hydrochloride
1-Azabicyclo[2.2.1]heptan-3-one (1.9 g, 17.1 mmol) was dissolved in 10 mL of methanol. Methoxyamine hydrochloride (1.4 g, 17.1 mmol) was added and the reaction was stirred at room temperature for 18 hours. The reaction was concentrated in vacuo to afford a white solid. Recrystallization of the residue from ethanol-diisopropyl ether afforded 2.27 g (75%) of the title product as a mixture of Z and E isomers, mp 210.degree.-211.degree. C.
Analysis calculated for C.sub.7 H.sub.13 ClN.sub.2 O: C, 47.59; H, 7.42; N, 15.86. Found: C, 47.46; H, 7.54; N, 15.84. Mass Spec.: m/e 140.1 (M+ for free base). .sup.1 H NMR: .delta.(CDCl.sub.3) 1.99 (1H, m), 2.36-2.52 (1H, m), 3.37-3.65 (4H, m), 3.86, 3.88 (3H, 2s) (3H, s), 3.89-4.00 (2H, m), 4.21-4.29 (1H, m) . .sup.13 C NMR: .delta.(CDCl.sub.3) 25, 26, 37.2, 40, 51.5, 51.7, 55.7, 56.5, 59.0, 59.6, 62.3, 153, 153.5.
The above procedure was utilized for the synthesis of the products listed in Table 1.
TABLE 1______________________________________ Ex- ampleHydroxylamine.HCl Product No.______________________________________NH.sub.2 OCH.sub.2 CCH (Z/E)-(.+-.)-1-Azabi- 4 cyclo[2.2.1.]-heptan-3- one, O-(2-propynyl)oxime hydrochloride, mp 203.degree. C. (dec)NH.sub.2 OCH.sub.2 Ph (Z/E)-(.+-.)-1-Azabi- 5 cyclo[2.2.1]-heptan-3- one, O-(phenyl- methyl)oxime hydro- chloride, mp 173-174.degree. C.NH.sub.2 OCH.sub.2 CH.sub.2 CH.sub.3 (Z/E)-(.+-.)-1-Azabi- 6 cyclo[2.2.1]-heptan-3- one, O-propyloxime hydrochloride, mp 165-166.degree. C.NH.sub.2 OCH(CH.sub.3).sub.2 (Z/E)-(.+-.)-1-Azabi- 7 cyclo[2.2.1]-heptan-3- one, O-(1-methyl- ethyl)oxime hydro- chloride, mp 188-189.degree. C.NH.sub.2 OCH.sub.2 CHCH.sub.2 (Z/E)-(.+-.)-1-Azabi- 8 cyclo[2.2.1]-heptan-3- one, O-(2-propenyl)oxime oxalate, mp 126-127.degree. C.NH.sub.2 OCH.sub.2 CH.sub.2 NH.sub.2 (Z/E)-(.+-.)-1-Azabi- 9 cyclo[2.2.1]-heptan-3- one, O-(2-amino- ethyl)oxime hydro- chloride, mp 232-234.degree. C. ##STR19## (Z/E)-(.+-.)-1-Azabi- cyclo[2.2.1]-heptan-3- one, O-(cyclopropyl- methyl)-oxime hydro- chloride, mp 165-167.degree. C. 10NH.sub.2 OCH.sub.2 CH.sub.2 OCH.sub.3 (Z/E)-(.+-.)-1-Azabi- 11 cyclo[2.2.1]-heptan-3- one, O-(2-methoxy- ethyl)oxime hydro- chloride, mp 176-178.degree. C.NH.sub.2 OPh (Z/E)-(.+-.)-1-Azabi- 12 cyclo[2.2.1]-heptan-3- one, O-phenyloxime- hydrochloride, mp 130-131.degree. C. ##STR20## (Z/E)-(.+-.)-1-Azabi- cyclo[2.2.1]-heptan-3- one, O-(2-thienyl- methyl)oxime hydro- chloride, mp 188-191.degree. C. 13 ##STR21## (Z/E)-(.+-.)-1-Azabi- cyclo[2.2.1]-heptan-3- one, O-(2-furyl- methyl)oxime oxalate, mp 116-117.degree. 14 ##STR22## (Z/E)-(.+-.)-1-Azabi- cyclo[2.2.1]-heptan-3- one, O-(3-furyl- methyl)oxime hydro- chloride, mp 120-122.degree. C. 15NH.sub.2 OCH(CH.sub.3)CH CH.sub.2 (Z/E)-(.+-.)-1-Azabi- 16 cyclo[2.2.1]-heptan-3- one, O-(1-methyl-2- propenyl)oxime oxalate, mp 120-122.degree. C.NH.sub.2 OCH.sub.2 CH.sub.2 CHCH.sub.2 (Z/E)-(.+-.)-1-Azabi- 17 cyclo[2.2.1]-heptan-3- one, O-(3-butenyl)-oxime oxalate, mp 96-98.degree. C.NH.sub.2 OC(CH.sub.3).sub.3 (Z/E)-(.+-.)-1-Azabi- 18 cyclo[2.2.1]-heptan-3- one, O-(tert-butyl)oxime hydrochloride, mp 231-232.degree. C.NH.sub.2 OCH.sub.2 CCCH.sub.3 (Z/E)-(.+-.)-1-Azabi- 19 cyclo[2.2.1]-heptan-3- one, O-(2-butynyl)oxime oxalate, mp 68-70.degree. C.NH.sub.2 OCH.sub.2 CH.sub.2CCH (Z/E)-(.+-.)-1-Azabi- 20 cyclo[2.2.1]-heptan-3- one, O-(3-butynyl)oxime oxalate, mp 177-178.degree. C.NH.sub.2 OCH(CH.sub.3)CCH (Z/E)-(.+-.)-1-Azabi- 21 cyclo[2.2.1]-heptan-3- one, O-(1-methyl-2- propynyl)oxime oxalate, mp 108-111.degree. C.NH.sub.2 OCH.sub.2 CHCHCCH (Z/E)-(.+-.)-1-Azabi- 22 cyclo[2.2.1]-heptan-3- one, O-(E-2-penten-4- ynyl)oxime hydro- chloride, mp 130-134.degree. C.NH.sub.2 OCH.sub.2 CCCHCH.sub.2 (Z/E)-(.+-.)-1-Azabi- 24 cyclo[2.2.1]-heptan-3- one, O-(2-pentyn-4- enyl)oxime hydrochlorideH.sub.2 NOCH.sub.2 CN (Z/E)-(.+-.)-[[(1-Azabi- 27 cyclo[2.2.1]-heptan-3- ylidene)amino]-oxy]- acetonitrile hydro- chloride, mp 202-203.degree. C.H.sub.2 NOCH.sub.2 CHCH (Z/E)-(.+-.)-1-Azabicyclo- 28CHCH.sub.2 [2.2.1]-heptan-3-one, O-(2,4-pentadienyl)oxime hydrochloride, mp 150-154.degree. C.H.sub.2 NOCH.sub.2 CHCH (Z/E)-(.+-.)-1-Azabi- 29CHCHCH.sub.3 cyclo[2.2.1]-heptan-3- one, O-(2,4-hexadi- enyl)oxime hydro- chloride, mp 179-180.degree. C.H.sub.2 NOCH.sub.2 CHCHCH.sub.3 (Z)-(.+-.)-1-Azabicyclo- 30 [2.2.1]-heptan-3-one, O- (Z-2-butenyl)oxime oxalate, mp 135-140.degree. C.H.sub.2 NOCH.sub.2 CHCHCH.sub.3 (Z/E)-(.+-.)-1-Azabi- 31 cyclo[2.2.1]-heptan-3- one, O-(E-2-but- enyl)oxime hydro- chloride, mp 154-156.degree. C.H.sub.2 NOCH.sub.2 C CCH.sub.2 CCH (Z/E)-(.+-.)-1-Azabi- 32 cyclo[2.2.1]-heptan-3- one, O-(2,5-hexa- diynyl)oxime oxalate, mp 144-146.degree. C.H.sub.2 NOCH.sub.2 CHCHCCH (Z/E)-(.+-.)-1-Azabi- 33 cyclo[2.2.1]-heptan-3- one, O-(2-penten- 4-ynyl)oxime oxalate, mp 130-134.degree. C.H.sub.2 NOCH.sub.2 CCCH.sub.2 OCH.sub.3 (Z/E)-(.+-.)-1-Azabi- 34 cyclo[2.2.1]-heptan-3- one, O-(4-methoxy-2- butynyl)oxime hydrochloride, mp 193-195.degree. C.H.sub.2 NOCH.sub.2 CO.sub.2 CH.sub.3 (Z/E)-(.+-.)-[[(1-Azabi- 35 cyclo[2.2.1]heptan-3- ylidene)amino]-oxy]- acetic acid methyl ester hydro-chloride, mp 174-175.degree. C.H.sub.2 NOCH.sub.2 CCCH.sub.2 CH.sub.3 (Z/E)-(.+-.)-1-Azabi- 36 cyclo[2.2.1]heptan-3- one, O-(2-pentynyl)oxime hydrochloride, mp 147-149.degree. C.H.sub.2 NOCH.sub.2 CO.sub.2 CH.sub.2 CH.sub.3 (Z/E)-(.+-.)-[[(1-Azabi- 37 cyclo[2.2.1]heptan-3- ylidene)amino]oxy]acetic acid ethyl ester hydrochloride, mp 198-200.degree. C.H.sub.2 NOCH.sub.2 CO.sub.2 CH.sub.2 (Z/E)-(.+-.)-[[(1-Azabi- 38CHCH.sub.2 cyclo[2.2.1]heptan-3- ylidene)amino]oxy]acetic acid 2-propynyl ester hydrochloride, mp 179-180.degree. C.H.sub.2 NOCH.sub.2 CHCHCO.sub.2 CH.sub.3 (Z/E)-(.+-.)-4-[[(1-Azabi- 39 cyclo[2.2.1]heptan-3- ylidene)amino]oxy]-2- butenoic acid methyl ester hydrochloride, mp 182-186.degree. C.H.sub.2 NO(CH.sub.2).sub.2 O(CH.sub.2).sub.2 (Z/E)-(.+-.)-1-Azabi- 40OCH.sub.3 cyclo[2.2.1]heptan-3- one, O-[2,(2-methoxy- ethoxy)ethyl]oxime hydrochloride, mp 80-82.degree. C.H.sub.2 NOCH.sub.2 CONHCH.sub.3 (Z/E)-(.+-.)-2-[(1-Azabi- 41 cyclo[2.2.1]heptan-3- ylideneamino)oxy]-N- methyl acetamide oxalate, mp 152-156.degree. C.H.sub.2 NOCH.sub.2 CONHCH.sub.2 CH.sub.3 (Z/E)-(.+-.)-2-[(1-Azabi- 42 cyclo[2.2.1]heptan-3- ylideneamino)oxy]-N- ethyl acetamide oxalate, mp 194.5-197.5.degree. C.H.sub.2 NOCH.sub.2 CON(CH.sub.3).sub.2 (Z/E)-(.+-.)-2-[(1-Azabi- 43 cyclo[2.2.1]heptan-3- ylideneamino)oxy]-N,N- dimethyl acetamide oxalateH.sub.2 NOCH.sub. 2 CON(CH.sub.2 - (Z/E)-(.+-.)-2-[(1-Azabi- 44CH.sub.3).sub.2 cyclo[2.2.1]heptan-3- ylideneamino)oxy]-N,N- diethyl acetamide oxalate, mp 109-117.degree. C.H.sub.2 NOCH.sub.2 CONHPh (Z/E)-(.+-.)-2-[(1-Azabi- 45 cyclo[2.2.1]heptan-3- ylideneamino)oxy]-N- phenylacetamideH.sub.2 NOCH.sub.2 CONHCH.sub.2 Ph (Z/E)-(.+-.)-2-[(1-Azabi- 46 cyclo[2.2.1]heptan-3- ylideneamino)oxy]-N- methylphenyl acetamide ##STR23## (Z/E)-(.+-.)-1-Azabi- cyclo[2.2.1]heptan-3- one, O-[4-(4-morpho- linyl)-2-butynyl oxime oxalate, mp 145.5-148.5.degree. C. 47______________________________________
EXAMPLE 48
(E)- and (Z) (.+-.)-1-Azabicyclo[2.2.2]octan-3-one, O-methyloxime
A mixture of the ketoarnine.HCl (5.56 g, 0.03 mole), 3-quinuclidinone (2.51 g, 0.03 mole), and potassium carbonate (11.0 g, 0.08 mole) in methanol (250 mL) was allowed to reflux for 2 hours. After removing the methanol under reduced pressure, the solution was suspended in water and extracted with ethyl ether (3.times.125 mL), dried over MgSO.sub.4, filtered, and concentrated to give a mixture of Z and E isomers. The oxalate salt was formed from the oil, mp 125.degree.-28.degree. C.
.sup.1 H NMR: .delta.(CDCl.sub.3) 9.01 (2H, br s), 4.03 (1H, s), 3.89 (1H, s), 3.80, 3.79 (3H, 2s,), 3.27-3.12 (5H, br m), 2.10-1.79 (4H, br m,). .sup.13 C NMR: .delta.164.7, 155.1, 154.6, 61.4, 59.4, 50.7, 50.1, 45.6, 45.5, 26.7, 22.5, 22.1, 21.4, 21.2 IR (cm.sup.-1) 2361, 1748, 1693, 1652, 1463, 1403, 1320, 1221, 1103, 1048, 861, 832, 785, 721, 670. Mass Spec.: 154, 137, 123, 108, 97, 82, 67, 55. Analysis calculated for C, H, N C.sub.8 H.sub.14 N.sub.2 O.1.25C.sub.2 H.sub.2 O.sub.4 : C, 47.28; H, 6.23; N, 10.50. Found: C, 47.57; H, 6.32; N, 10.27.
EXAMPLE 49
(E)- and (Z)-1-Azabicyclo[2.2.2[octan-3-one, O-(2-propynyl)oxime
3-Quinuclidinone (1.5 g, 12 mmol) and 2-propynylhydroxylamine hydrochloride (1.29 g, 12 mmol) were dissolved in 20 mL of methanol and stirred at room temperature for 16 hours. The reaction was evaporated in vacuo to afford a dark brown semi-solid. The crude semi-solid was basified with aqueous K.sub.2 CO.sub.3 and extracted with chloroform. The chloroform extract was evaporated to give the crude oxime as a mixture of the E- and Z-isomers. Separation of the isomers by chromatography (silica gel; dichloromethane-acetonemethanol (150:10:5), gave isomer A, 1.0 g (mp 81.degree.-83.degree. C.) and isomer B, 0.42 g (mp 100.degree.-101.degree. C.), respectively.
Isomer A: Analysis calculated for C.sub.10 H.sub.14 N.sub.2 O: C, 67.39; H, 7.92; N, 15.72. Found: C, 67.26; H, 7.94; N, 15.59. Mass Spec.: m/e 178. .sup.1 H NMR: .delta.(CDCl.sub.3) 1.7-1.85 (4H, m); 2.40-2.55 (1H, m), 2.58-2.65 (1H, m), 2.75-3.05 (4H, m), 3.63 (2H, s), 4.62 (2H, s). .sup.13 C NMR: .delta.(CDCl.sub.3) 26.3, 28.6, 47.2, 52.3, 60.9, 74.2, 81.0, 166.0. Isomer B: Analysis calculated for C.sub.10 H.sub.14 N.sub.2 O: C, 67.39; H, 7.92; N, 15.72. Found: C, 66.95; H, 8.02; N, 15.59. Mass Spec.: m/e 178. .sup.1 H NMR: .delta.(CDCl.sub.3) 1.6-1.8 (4H, m), 2.45-2.50 (1H, m), 2.78-3.0 (4H, m), 3.35-3.44 (1H, m), 3.45 (2H, s), 4.6 (2H, s). .sup.13 C NMR: .delta.(CDCl.sub.3) 23.5, 24.8, 47.2, 53.6, 60.8, 70.1, 81.0, 165.0.
EXAMPLE 50
4-Piperidinone O-methyloxime hydrochloride
4-Piperidinone hydrochloride monohydrate (5 g, 32.5 mmol), methoxyamine hydrochloride (4.18 g, 50 mmol) and potassium carbonate (13.82 g, 100 mmol) were taken into 100 mL of ethanol and stirred at room temperature for 16 hours. The reaction mixture was filtered and the filtrate evaporated to afford a white solid. The crude solid was dissolved in water, made basic with solid potassium carbonate, and extracted with dichloromethane (3.times.100 mL). The combined extracts were dried over anhydrous sodium sulfate and evaporated in vacuo to afford a clear, colorless liquid. It was converted to its hydrochloride salt by treating with ethereal hydrogen chloride to give 233 mp 140.degree.-141.degree. C.
Analysis calculated for C.sub.6 H.sub.12 N.sub.2 O.HCl :
C, 43 . 77; H, 7.96; N, 17.02. Found: C, 43.78; H, 7.96; N, 17.08. .sup.1 H NMR: .delta.(CDCl.sub.3) 2.68-2.73 (2H, t), 2.92-2.97 (2H, t), 3.27-3.34 (4H, m), 3.84 (3H, s), 9.93 (1H, br.s) . .sup.13 NMR: .delta.(CDCl.sub.3) 21.76, 28.05, 42.92, 44.29, 61.61, 150.07. Mass Spec.: m/e 128.08 (M.sup.+ for free base).
EXAMPLE 51
1-Methyl-4-piperidinone O-methyloxime hydrochloride
1-Methyl-4-piperidone (5 g, 44.2 mmol) and methoxyamine hydrochloride (3.69 g, 44.2 mmol) were taken into 25 mL of methanol and stirred at room temperature for 2 days. The reaction mixture was evaporated in vacuo to afford a solid residue. The residue was dissolved in water, made basic with solid potassium carbonate, and extracted with dichloromethane (3.times.100 mL). The combined extracts were dried over anhydrous sodium sulfate and evaporated to give a clear, yellow liquid that was purified on silica gel, eluting with dichloromethane-methanol (95:5)to afford 2.55 g of the desired product. Treatment with ethereal hydrogen chloride gave the hydrochloride salt, 2.99 g, mp 145.degree.-147.degree. C.
Analysis calculated for C.sub.7 H.sub.14 N.sub.2 O.HCl: C, 47.06; H, 8.46; N, 15.68. Found: C, 46.94; H, 8.41; N, 15.60. .sup.1 H NMR: .delta.(CDCl.sub.3) 2.53-2.58 (1H, m), 2.69-3.20 (4H, m), 2.87-2.89 (3H, d), 3.36-3.49 (1H, m), 3.55-3.76 (2H, m), 3.84 (3H, s), 12.90 (1H, br.s). .sup.13 C NMR: .delta.(CDCl.sub.3) 21.97, 28.25, 43.46, 53.09, 54.36, 1.64, 149.17. Mass Spec.: m/e 142.17 (M.sup.+)for free base).
EXAMPLE 52
Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-One O-2-propenyloxime oxalate and E-(.+-.)-1-azabicyclo[2.2.1]-heptan-3-one O-2-propenyloxime oxalate
1-Azabicyclo[2.2.1]heptan-3-one (2 g, 18 mmol) and O-allylhydroxylamine hydrochloride hydrate (1.97 g, 18 mmol) were dissolved in 25 mL of methanol and stirred at room temperature for 18 hours. The reaction was evaporated in vacuo to give a viscous oil. The crude oil was dissolved in 50 mL of water, made basic with a saturated solution of potassium carbonate, and extracted with ether (3.times.100 mL). The combined extracts were dried over anhydrous sodium sulfate, and evaporated to give a clear, yellow liquid which was purified on silica gel, eluting with dichloromethanemethanol (10:1). Isomer A, the less polar isomer, was isolated and converted to the oxalate salt to give 1.365 g, mp 130.degree.-132.degree. C.
Analysis calculated for C.sub.9 H.sub.14 N.sub.2 O.C.sub.2 H.sub.2 O.sub.4 : C, 51.55; H, 6.29; N, 10.93. Found: C, 51.52; H, 6.37; N, 10.88. .sup.1 H NMR: .delta.(DMSO) 12.0 (2H, br.s), 5.86-6.02 (1H, m), 5.17-5.31 (2H, m), 4.5-4.52 (2H, d), 3.85-4.06 (2H, q), 3.16-3.42 (5H, m), 2.14-2.27 (1H, m), 1.70-1.75 (1H, m) . Mass Spec.: m/e 166.1 (M.sup.+ for free base).
Isomer B, the more polar isomer, was converted to the oxalate to give 0.829 g, mp 102.degree.-104.degree. C.
Analysis calculated for C.sub.9 H.sub.14 N.sub.2 O.C.sub.2 H.sub.2 O.sub.4 : C, 51.55; H, 6.29; N, 10.93. Found: C, 51.02; H, 6.22; N, 10.63. .sup.1 H NMR: .delta.(DMSO) 11.2 (2H, br.s), 5.88-6.04 (1H, m), 5.17-5.33 (2H, m), 4.50-4.55 (2H, d), 3.73-4.00 (3H, m), 3.11-3.42 (4H, m), 2.08 -2.21 (1H, m), 1.62-1.66 (1H, m). Mass Spec.: m/e 166.1 (M.sup.+ for free base).
The above procedure was utilized for the synthesis of the following E and Z isomers:
TABLE 2__________________________________________________________________________ExampleNo. Amine Product__________________________________________________________________________53 H.sub.2 NOCH.sub.2 CCH.HCl Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-2-propynyloxime hydrochloride, mp 199-200.degree. C.54 ##STR24## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-thienylmethyl)oxime oxalate, mp 142-144.degree. C.55 ##STR25## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-thienylmethyl)oxime oxalate, mp 142-143.degree. C.56 ##STR26## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2-methyl-2-propenyl)oxime oxalate; mp 131-133.degree. C.57 ##STR27## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2-methyl-2-propenyl)oxime oxalate, mp 124-126.degree. C.58 ##STR28## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-cyclobutyloxime hydrochloride, mp 209-210.degree. C.59 ##STR29## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-cyclobutyloxime hydrochloride, mp 207-208.degree. C.60 H.sub.2 NO(CH.sub.2).sub.3 CCH.HCl Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-4-pentynyloxime oxalate, mp 119-121.degree. C.61 H.sub.2 NO(CH.sub.2).sub.3 CCH.HCl E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-4-pentynyloxime oxalate, mp 110-113.degree. C.62 H.sub.2 NO(CH.sub.2).sub.2 CCCH.sub.3.HCl Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-3-pentynyloxime oxalate, mp 161-162.degree. C.63 H.sub.2 NO(CH.sub.2).sub.2 CCCH.sub.3.HCl E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-3-pentynyloxime oxalate, mp 149-150.degree. C.64 H.sub.2 NOCH.sub.2 CCCH.sub.2 CCCH.sub.3.HCl Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2,5-heptadiynyl)oxime oxalate, mp 65-70.degree. C.65 H.sub.2 NOCH.sub.2 CCCH.sub.2 CCCH.sub.3.HCl E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2,5-heptadiynyl)oxime oxalate, mp 108-110.degree. C.66 H.sub.2 NOCH.sub.2 CCCH.sub.2 CHCH.sub.2.HCl Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2-hexyn-5-enyl)oxime oxalate, mp 94-96.degree. C.67 H.sub.2 NOCH.sub.2 CCPh.HCl Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-phenyl-1-propynyl)oxime oxalate, mp 162-164.degree. C.68 H.sub.2 NOCH.sub.2 CCPh.HCl E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-phenyl-2-propynyl)oxime oxalate, mp 83-85.degree. C.69 H.sub.2 NOCH.sub.2 CCC(CH.sub.3)CH.sub.2.HCl Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(4-methyl-2-pentyn-4-enyl)oxime oxalate, mp 118-119.degree. C.70 H.sub.2 NOCH.sub.2 CCC(CH.sub.3) CH.sub.2.HCl E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(4-methyl-2-pentyn-4-enyl)oxime oxalate, mp 78-83.degree. C.71 H.sub.2 NOCH.sub.2 CC(CH.sub.2).sub.2 CH.sub.3.HCl Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2-hexynyl)oxime oxalate, mp 109-110.degree. C.72 H.sub.2 NOCH.sub.2 CC(CH.sub.2).sub.2 CH.sub.3.HCl E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2-hexynyl)oxime oxalate, mp 105-107.degree. C.73 H.sub.2 NOCH.sub.2 CC(CH.sub.2).sub.3 CH.sub.3.HCl Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2-heptynyl)oxime oxalate, mp 109-110.degree. C.74 H.sub.2 NOCH.sub.2 CC(CH.sub.2).sub.3 CH.sub.3.HCl E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2-heptynyl)oxime oxalate, mp 100-104.degree. C.75 H.sub.2 NOCH.sub.2 CH.sub.2 SCH.sub.2 CCH.HCl Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2-(2-propynylthio)ethyl)oxime oxalate, mp 101-103.degree. C.76 H.sub.2 NOCH.sub.2 CH.sub.2 SCH.sub.2 CCH.HCl E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2-(2-propynylthio)ethyl)oxime oxalate, mp 121-122.degree. C.77 H.sub.2 NOCH.sub.2 CCCH.sub.2 CCCH.sub.2 CCH.HCl Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2,5,8-nonatriynyl)oxime oxalate, mp 113-117.degree. C.78 H.sub.2 NOCH.sub.2 CCCH.sub.2 CCCH.sub.2 CCH.HCl E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2,5,8-nonatriynyl)oxime oxalate, mp 129-132.degree. C.79 ##STR30## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(Z-3-methyl-2-penten-4-ynyl)oxime oxalate, mp 127-129.degree. C.80 ##STR31## E-(.+-.)-1-Azabicyclo[2.2.1] heptan-3-one, O-(Z-3-methyl-2-penten-4-ynyl)oxime oxalate, mp 125-128.degree. C.81 ##STR32## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-2-penten-4-ynyl)oxime oxalate, mp 125-128.degree. C.82 ##STR33## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-2-penten-4-ynyl)oxime oxalate, mp 140-142.degree. C.83 H.sub.2 NOCH.sub.2 CCCH(CH.sub.3).sub.2.HCl Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(4-methyl-2-pentynyl)oxime oxalate, mp 133-134.degree. C.84 H.sub.2 NOCH.sub.2 CCCH(CH.sub.3).sub.2.HCl E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(4-methyl-2-pentynyl)oxime oxalate, mp 111-112.degree. C.85 H.sub.2 NOCH.sub.2 CCC(CH.sub.3).sub.3.HCl Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(4,4-dimethyl-2-pentynyl)oxime oxalate, mp 157-158.degree. C.86 H.sub.2 NOCH.sub.2 CCC(CH.sub.3).sub.3.HCl E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(4,4-dimethyl-2-pentynyl)oxime oxalate, mp 150-152.degree. C.87 ##STR34## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-methoxyphenyl)-2-propynyl)oxime oxalate, mp 158-159.degree. C.88 ##STR35## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-methoxyphenyl)-2-propynyl)oxime oxalate, mp 147-148.degree. C.89 ##STR36## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-methoxyphenyl)-2-propynyl)oxime oxalate, mp 126-127.degree. C.90 ##STR37## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-methoxyphenyl)-2-propynyl)oxime oxalate, mp 80-82.degree. C.91 ##STR38## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-methoxyphenyl)-2-propynyl)oxime oxalate, mp 155-157.degree. C.92 ##STR39## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-methoxyphenyl)-2-propynyl)oxime oxalate, mp 132-133.degree. C.93 ##STR40## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-fluorophenyl)-2-propynyl)oxime oxalate, mp 141-142.degree. C.94 ##STR41## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-fluorophenyl)-2-propynyl)oxime oxalate, mp 83-85.degree. C.95 ##STR42## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-fluorophenyl)-2-propynyl)oxime oxalate, mp 123-125.degree. C.96 ##STR43## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-fluorophenyl)-2-propynyl)oxime oxalate, mp 144-145.degree. C.97 ##STR44## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-fluorophenyl)-2-propynyl)oxime oxalate, mp 140-143.degree. C.98 ##STR45## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-chlorophenyl)-2-propynyl)oxime oxalate, mp 143-145.degree. C.99 ##STR46## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2'-chlorophenyl)-2-propynyl)oxime oxalate, mp 102-104.degree. C.100 ##STR47## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-chlorophenyl)-2-propynyl)oxime oxalate, mp 140-142.degree. C.101 ##STR48## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-chlorophenyl)-2-propynyl)oxime oxalate, mp 114-115.degree. C.102 ##STR49## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-chlorophenyl)-2-propynyl)oxime oxalate, mp 163-164.degree. C.103 ##STR50## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-methylphenyl)-2-propynyl)oxime oxalate, mp 157-158.degree. C.104 ##STR51## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-nitrophenyl)-2-propynyl)oxime oxalate, mp 157-160.degree. C.105 ##STR52## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-nitrophenyl)-2-propynyl)oxime oxalate, mp 131-132.degree. C.106 ##STR53## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2-thienyl)-2-propynyl)oxime oxalate, mp 135-136.degree. C.107 ##STR54## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(2-thienyl)-2-propynyl)oxime oxalate, mp 96-98.degree. C.108 ##STR55## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3-thienyl)-2-propynyl)oxime oxalate, mp 146-148.degree. C.109 ##STR56## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3-thienyl)-2-propynyl)oxime oxalate, mp 90-92.degree. C.110 ##STR57## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3-pyridinyl)-2-propynyl)oxime dioxalate, mp 160-162.degree. C.111 ##STR58## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2-phenylethyl)oxime oxalate, mp 143-145.degree. C.112 ##STR59## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2-phenylethyl)oxime oxalate, mp 140-142.degree. C.113 ##STR60## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2-phenyloxyethyl)oxime oxalate, mp 140-142.degree. C.114 ##STR61## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2-phenyloxyethyl)oxime oxalate, mp 122-125.degree. C.115 ##STR62## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-phenylpropyl)oxime oxalate, mp 108-110.degree. C.116 ##STR63## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-phenylpropyl)oxime oxalate, mp 130-131.degree. C.117 H.sub.2 NOCH.sub.2 CHC(CH.sub.3).sub.2.HCl Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-methyl-2-butenyl)oxime oxalate, mp 130-131.degree. C.118 H.sub.2 NOCH.sub.2 CHC(CH.sub.3).sub.2.HCl E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-methyl-2-butenyl)oxime oxalate, mp 131-132.degree. C.119 H.sub.2 NOCH.sub.2 CHC(CH.sub.3)CH.sub.2 CH.sub.2 CHC(CH.sub.3).sub.2 .HCl Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3,7-dimethyl-2,6-octadienyl)oxime oxalate, mp 103-104.degree. C.120 ##STR64## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(Z-3-methyl-5-phenyl-2-penten-4-ynyl)- oxime oxalate, mp 137-141.degree. C.121 ##STR65## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(Z-3-methyl-5-phenyl-2-penten- 4-ynyl)-oxi me oxalate, mp 106-110.degree. C.122 ##STR66## Z-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-phenyl-2-penten- 4-ynyl)-oxi me oxalate, mp 133-134.degree. C.123 ##STR67## E-(.+-.)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-phenyl-2-penten- 4-ynyl)oxim e oxalate, mp 129-131.degree. C.__________________________________________________________________________
EXAMPLE 124
Z/E(.+-.)-N-Methyl-8-Azabicyclo[3.2.1[octan-3-one methyl oxime hydrochloride
A solution of methoxyamine hydrochloride (4.18 g, 0.05 mol) in methanol was added to a rapidly stirring solution of N-methyl-8-azabicyclo[3.2.11octan-3-one (commercially available) (6.96 g, 0.05 mol) in methanol while cooling with an ice-bath. The reaction mixture was allowed to warm up to room temperature, stirred at room temperature for 16 hours and then the solvent removed. The resulting solid residue was partitioned between CH.sub.2 Cl.sub.2 and conc. aqueous K.sub.2 CO.sub.3 solution. The organic layer was dried (K.sub.2 CO.sub.3), and concentrated to give an oil. The oil was dissolved in ether and treated with ethereal-HCl. The resulting white solid ppt was separated by filtration and recrystallized from isopropanol-isopropyl ether to give 4.88 g (45%) of oxime hydrochloride as white solid: mp turns brown at 197.degree. C. to 200.degree. C. and melts with decomposition at 217.degree. C. and 220.degree. C.
.sup.1 H NMR (D.sub.2 O): .delta.4.710 (4H, s), 4.013-3.939 (1H, bd), 3.765 (3H, s), 3.259-3.194 (1H, bd), 2.745 (3H, s), 2.476-2.232 (3H, m), 1.909-1.722 (1H, m). .sup.13 C NMR (D.sub.2 O): .delta.154.411, 66.306, 65.520, 64.257, 41.756, 38.930, 33.925, 27.461, 26.657. Mass. Spec.: 168 CM.sup.+ for free base.
EXAMPLE 125
Z/E(.+-.)-N-Methyl-8-Azabicyclo[3.2.1]octan-2-one-O-methyl oxime hydrochloride
The preparation of this compound is depicted in the Chart I set forth hereinafter and as described hereinbelow.
(a) Preparation of Ethyl 1,3,4,5-cycloheptatriene-1-carboxylate (2)
Ethyl diazoacetate (43.4 g, 0.38 mol) was added slowly (syringe pump) over a period of 7 hours to a mixture of benzene (594.32 g, 7.61 mol) and tetrakis (perfluorobenzoato) dirhodium (II)(0.84 g, 00.16 mol). After stirring at room temperature for 16 hours, the solvent was removed and the oily residue distilled in vacuo to give 50.44 g (81%) of ethyl 1,3,5-cycloheptatriene-1-carboxylate: bp 90.degree.-96.degree. C. 2.4-3.0 mm Hg).
.sup.1 H NMR (CDCl.sub.3): 6 6.6 (2H, m), 6.2 (2H, m), 5.3 (2H, m), 4.2 (2H, q, OCH.sub.2 CH.sub.3), 2.5 (1H, t), 1.3 (3 H, t, CH.sub.2 CH.sub.3).
(b) Preparation Of N-Methyl Ethyl 8-Azabicyclo[3.2.1]-oct-2-ene-2-carboxylate (3)
A mixture of ethyl 1,3,5-cycloheptatriene-1-carboxylate (12.72 g, 0. 077 mol), methylamine (23.13 g, 0.74 mol) and NaOH (3.1 g, 0,078 mol) in MeOH (60 mL) was autoclaved at 125.degree. C. for 26 hours. The reaction mixture was filtered, and the filtrate concentrated to give an oil. The oil was dissolved in MeOH (400 mL) and saturated with HCl gas; conc. sulphuric acid (8 mL) was added and the mixture refluxed for 12 hours. The oily residue obtained after evaporation of MeOH was partitioned between aqueous conc. Na.sub.2 CO.sub.3 and ET.sub.2 O. The ether layer was evaporated as brown oil: IR (neat) 1720 (COOCH.sub.3).
.sup.1 H NMR (CDCl.sub.3): 6 6.8 (1H, bt), 3.7 (3H, s, OCH.sub.3), 2.35 (3H, s, NCH.sub.3), 3.4-2.4 (3H, m), 2.3-1.4 (6H, m).
(c) Preparation of N-Methyl-2-acetyl-8-azabicyclo[3.2.1]oct-2-ene (4)
To a mixture of ethyl trop-2-ene-2-carboxylate (3.43 g, 0.019 mol) and Me.sub.3 SiCl (10.32 g, 0.095 mol) in THF (70 mL) cooled to -100.degree. C., MeLi (1.4 M, 17.07 n%L, 0.0239 mol) was added dropwise. After warming up to room temperature, the reaction mixture was stirred for 16 hours. Excess Me.sub.3 SiCl and THF was evaporated off and the resulting residue was stirred with EtOH (6 mL) followed by water (6 mL). The mixture was then made acidic (6N HCl )and extracted with ether. The aqueous layer was made basic (solid K.sub.2 CO.sub.3)and extracted with chloroform, dried (K.sub.2 CO.sub.3) and concentrated to give
3.14 g (81%) of 2-acetyltrop-2-ene as an oil: IR (neat) 1670 (COCH.sub.3);
.sup.1 H NMR (CDCl.sub.3): .delta.6.7 (1H, bt), 2.3 (s, NCH.sub.3), 2.2 (s, C (.tbd.O)CH.sub.3).
(d) N-Methyl-2-Acetyl =8-azabicyclo[3.2.1]octane, compound (5)
is obtained by catalytic reduction (H.sub.2 /RaNi) of compound (4)and is converted to N-methyl8-azabicyclo[3.2.1]octan-2-one, compound (7)by procedures known in the art (see J. Org. Chem. 1990;55:5025). In compound (6)TBDMSO stands for testing butyl dimethylsilyloxy. The ketone, compound (7) is converted to the methyloxime as generally described above in Example 124.
Similarly when N-methyl-2-acetyl-9-azabicyclo[4.2.1]nonane, which can be prepared from 2-acetyl-9-azabicyclo[4.2.1]non-2-ene which is commercially available, is substituted for N-methyl-2-acetyl-8-azabicyclo[3.2.1]octane, compound (5), N-methyl-8-azabicyclo[4.2.1]nonan-2-one methyl oxime is obtained.
Following the general procedure of Example 52 only substituting the hydroxylamine listed below for O-allylhydroxylamine hydrochloride hydrate, the products listed below can be prepared.
TABLE 3______________________________________ExampleNo. Amine.HCl Product______________________________________126 ##STR68## Z-(.+-.)-1-Azabicyclo- [2.2.1]heptan-3- one, O-p-biphenyl- yloxime127 ##STR69## Z-(.+-.)-1-Azabicyclo- [2.2.1]heptan-3- one, O-(cyclohex-2- enylmethyl)oxime, mp 127-130.degree. C.128 ##STR70## E-(.+-.)-1-Azabicyclo- [2.2.1]heptan-3- one, O-(cyclohex-2- enylmethyl)oxime, mp 98-100.degree. C.129 ##STR71## Z-(.+-.)-1-Azabicyclo- [2.2.1]heptan-3- one, O-[(3-cyclo- hexylmethyl)-2- propynyl]oxime, mp 115-116.degree. C.130 ##STR72## E-(.+-.)-1-Azabicyclo- [2.2.1]heptan-3- one, O-[(3-cyclo- hexylmethyl)-2- propynyl]oxime, mp 88-90.degree. C.131 ##STR73## Z-(.+-.)-1-Azabicyclo- [2.2.1]heptan-3- one, O-[(3-cyclo- hexylmethyl)-2- propynyl]oxime, mp 108-110.degree. C.132 ##STR74## E-(.+-.)-1-Azabicyclo- [2.2.1]heptan-3- one, O-[(3-cyclo- hexylmethyl)-2- propynyl]oxime, mp 117-120.degree. C.133 ##STR75## Z-(.+-.)-1-Azabicyclo- [2.2.1]heptan-3- one, O-[(3-cyclo- pentyl)-2- propynyl]oxime, mp 125-128.degree. C.134 ##STR76## E-(.+-.)-1-Azabicyclo- [2.2.1]heptan-3- one, O-[(3-cyclo- pentyl)-2- propynyl]oxime, mp 135-136.degree. C.135 ##STR77## Z-(.+-.)-1-Azabicyclo- [2.2.1]heptan-3- one, O-cyclohex-2- enyloxime136 ##STR78## Z-(.+-.)-1-Azabicyclo- [2.2.1]heptan-3- one, O-cyclopent-2- enyloxime137 ##STR79## Z-(.+-.)-1-Azabicyclo- [2.2.1]heptan-3- one, O-[(2-cyclohex- 2-enylidene)ethyl- oxime138 ##STR80## Z-(.+-.)-1-Azabicyclo- [2.2.1]heptan-3- one, O-2-(cyclo- pent-2-enylidene)- ethyloxime139 ##STR81## Z-(.+-.)-1-Azabicyclo- [2.2.1]heptan-3- one, O-2-(cyclo- hexylidene)ethyl- oxime140 ##STR82## Z-(.+-.)-1-Azabicyclo- [2.2.1]heptan-3- one, O-2-(cyclo- pentylidene)ethyl- oxime______________________________________
General Procedure for the Preparation of Oximes of Formula V
1-Azabicyclo[2.2.1]heptan-3-one was prepared according to J. Chem. Soc., Chem. Comm. 1988:1618.
A solution of 1-azabicyclo[2.2.1]heptan-3-one (2 g, 18 mmol) and the substituted hydroxylamine (hydrochloride salt) (H.sub.2 NOR-HCl; 18 mmol) in 10 mL methanol is stirred at room temperature for 18 hours. The reaction mixture is concentrated in vacuo. The residue is partitioned between CH.sub.2 Cl.sub.2 and saturated potassium carbonate. The organic phase is dried over anhydrous sodium sulfate and evaporated in vacuo. The residue is converted to its oxalate salt and recrystallized from ethanol to afford the desired oxime as a mixture of E and Z oximes. The two geometric isomers can be separated by column chromatography on silica gel (CH.sub.2 Cl.sub.2 :MeOH; 9:1). Using this procedure with the appropriate chiral ketone, the following compounds were prepared as the oxalate salts:
EXAMPLE 141
Z-(R)-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-methoxyphenyl)-2-propynyl)oxime, mp 82.degree.-93.degree. C.
EXAMPLE 142
Z-(S)-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3(3'-methoxyphenyl)-2 -propynyl)oxime, mp 72.degree.-76.degree. C.
EXAMPLE 143
Z-(R)-(-)-1-Azabicyclo[2.2,1]heptan-3-one, O-(3(4'-methoxyphenyl)-2-propynyl)oxime, mp 128.degree.-135.degree. C.
EXAMPLE 144
Z-(S)-(+)-1-Azabicyclo[2.2,1]heptan-3-one, O-(3-(4'-methoxyphenyl)-2-propynl)oxime, mp 140.degree.-145.degree. C.
EXAMPLE 145
Z-(R)-(-)-1-Azabicyclo[2,2.1]heptan-3-one, O-(E-3-methyl-5-phenyl-2-penten-4-ynyl)oxime, mp 100.degree.-104.degree. C.
EXAMPLE 146
Z-(S)-(+)-1-Azabicyclo[2,2,1]heptan-3-one, O-(E-3-methyl-5-phenyl-2-penten-4-ynyl)oxime, mp 116.degree.-118.degree. C.
EXAMPLE 147
Z-(R)-(-)-1-Azabicyclo[2,2.1]heptan-3-one, O-(3-(3',4'-dimethoxyphenyl)-2-propynyl)oxime, mp 142.degree.-144.degree. C.
EXAMPLE 148
Z-(S)-(+)-1-Azabicyclo[2,2,1]heptan-3-, O-(3-(3',4'-dimethoxyphenyl)-2-propynyl)oxime, mp 138.degree.-144.degree. C.
EXAMPLE 149
Z-(R)-(-)-1-Azabicyclo[2,2,1]heptan-3-one, O-(3-(4'-methylphenyl)-2-propynyl)oxime, mp 138.degree.-140.degree. C.
EXAMPLE 150
Z-(S)-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(4'-methylphenyl)-2-propynyl)oxime, mp 132.degree.-136.degree. C.
EXAMPLE 151
Z-(R)-(-)-1-Azabicyclo[ 2.2.1]heptan-3-one, O-(3-(3'-trifluoroethylphenyl)-2-propynyl)oxime, mp 97.degree.-98.degree. C.
EXAMPLE 152
Z-(S)-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-(3'-trifluoromethylphenyl)-2-propynyl)oxime, mp 112.degree.-114.degree. C.
EXAMPLE 153
Z-(R)-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-phenyl-2-propynyl)oxime, mp 147.degree.-151.degree. C.
EXAMPLE 154
Z-(S)-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(3-phenyl-2-propynyl)oxime, mp 144.degree.-146.degree. C.
EXAMPLE 155
Z-(R)-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(E-3-methyl-5-(3',4'-dichlorophenyl-2-penten-4-ynyl)oxime, mp 110.degree.-115.degree. C.
EXAMPLE 156
Z-(S)-(+)-1-Azabicyclo[2.2.1]heptan.3-one-O-(E-3-methyl-5-(3',4'-dichlorophenyl-2-penten-4-ynyl)oxime, mp 115.degree.-118.degree. C.
EXAMPLE 157
Z-(R)-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-2-propynl oxime, mp 118.degree.-121.degree. C.
EXAMPLE 158
Z-(S)-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-2-propynyl oxime, mp 124.degree.-143.degree. C.
EXAMPLE 159
Z-(R)-(-)-1-Azabicyclo[2,2.1]heptan-3-one, O-(2,5-hexadiynyl)oxime, mp 90.degree.-105.degree. C.
EXAMPLE 160
Z-(S)-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2,5-hexadiynyl)oxime, mp 86.degree.-91.degree. C.
EXAMPLE 161
Z-(R)-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2,5,8-nonatriynyl)oxime, mp 98.degree.-108.degree. C.
EXAMPLE 162
Z-(S)-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-(2,5,8-nonatriynyl) Oxime, mp 74.degree.-90.degree. C.
EXAMPLE 163
Z-(R)-(-)-1-Azabicyclo[2,2.1]heptan-3-one, O-[3-(4'-chlorophenyl)-2-propynyl]oxime, mp 135.degree.-148.degree. C.
EXAMPLE 164
Z-(S)-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-[3-(4'-chlorophenyl)-2-propynyl]oxime, mp 132.degree.-148.degree. C.
EXAMPLE 165
Z-(R)-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-[3-(4'-fluorophenyl)-2-propynyl]oxime, mp 95.degree.-102 .degree. C.
EXAMPLE 166
Z-(S)-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-[3-(4'-fluorophenyl)-2-propynyl]oxime, mp 122.degree.-128.degree. C.
EXAMPLE 167
Z-(R)-(-)-1-Azabicyclo[2.2.1]heptan- 3-one, O-[3-(3'-fluorophenyl)-2-propynyl]oxime, mp 75.degree.-77.degree. C.
EXAMPLE 168
Z-(S)-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-[3-(3'-fluorophenyl)-2-propynyl]oxime, mp 92 .degree.-93.degree. C.
EXAMPLE 169
Z-(R)-(-)-1-Azabicyclo[2.2.1]heptan-3-one, O-[Z-3-methyl-5-(3',4'-dimethoxyphenyl)-2-penten-4-ynyl]oxime, mp 98.degree. C.
EXAMPLE 170
Z-(S)-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-[Z-3-methyl-5-(3',4'-dimethoxyphenyl)-2-penten-4-ynyl]oxime, mp 100.degree.-112.degree. C.
EXAMPLE 171
Z-(R)-(-)-1-Azabicyclo[2,2.1]heptan,3-one, O-[Z-3-methyl-5-(3-thienyl)-2-penten-4-ynyl]oxime, mp 94.degree. C.
EXAMPLE 172
Z-(S)-(+)-1-Azabicyclo[2.2.1]heptan-3-one, O-[Z-3-methyl-5-(3-thienyl)-2-penten-4-ynyl]oxime, mp 90.degree.-95.degree. C.
PREPARATION OF HYDROXYLAMINES
I. O-(Trans-3-methyl-5-phenyl-2-penten-4-ynyl)hydroxylamine hydrochloride
(a) Trans-3-methyl-5-phenyl-2-penten-4-yn-1-ol
Trans-3-methyl-2-penten-4-yn-1-ol (10.57 g, 0.11 mol), diethylamine (80 mL), copper(I)iodide (0.7 g), tetrahydrofuran (30 mL), and tetrakis(triphenylphosphine)palladium(o) (1.0 g) were placed in a 300-mL flask under nitrogen. Iodobenzene (11.2 mL, 0.1 mol) was added dropwise via a dropping funnel at room temperature. After stirring at room temperature for 24 hours, the reaction was evaporated in vacuo to give a brown semisolid residue. The crude residue was dissolved in 200 mL of water, then extracted four times with 200 mL of diethyl ether. The combined extracts were dried over anhydrous sodium sulfate and evaporated in vacuo to give a clear broom liquid. This was purified by column chromatography (silica gel), eluting with 2:1 hexane-ethyl acetate to afford 12.5 g of the title product.
.sup.1 H NMR: .delta.(CDCl.sub.3) 7.2-7.45 (5H, m), 6.06-6.13 (1H, m), 4.25-4.28 (2H, d), 1.92 (3H, s), 1.76 (1H, br.s). .sup.13 C NMR: .delta.(CDCl.sub.3) 17.62, 59.2, 60.5, 87.7, 91.5, 120.85, 123.2, 128.1, 128.3, 131.56, 135.59.
(b) N-(trans-3-methyl-5-phenyl-2-penten-4-ynyl)oxyphthalimide
Diethyl azodicarboxylate (15.2 mL, 76 mmol) was added dropwise to a solution of N-hydroxyphthalimide (11.2 g, 69 mmol), trans-3-methyl-5-phenyl-2-penten-4-yn-1-ol (11.83 g, 69 mmol), and triphenylphosphine (18.03 g, 69 mmol) in 500 mL of tetrahydrofuran at room temperature. After stirring at room temperature for 16 hours, the reaction mixture was evaporated in vacuo to give a yellow solid. The solid was purified by column chromatography (silica gel), eluting with dichloromethane to give a yellow solid that was recrystallized from ethanol to 12.29 g of the title product, mp 96.degree.-98.degree. C.
(c) O-(Trans-3-methyl-5-phenyl-2-penten-4-ynyl)hydroxylamine hydrochloride
Methylhydrazine (1 mL, 18.8 mmol) was added dropwise to a solution of N-(trans-3-methyl-5-phenyl-2-penten-4-ynyl)oxyphthalimide (5.96 g, 18.8 mmol) in 20 mL of dichloromethane. A precipitate formed immediately. The reaction was stirred for 2.5 hours, then filtered. The filtrate was diluted to 500 mL with diethyl ether and anhydrous hydrogen chloride gas was bubbled into the dilute solution to give a precipitate of the title product, 4.04 g, mp 196.degree.-197.degree. C.
II. O-(3-Methyl-2-butenyl)hydroxylamine hydrochloride
(a) N-(3-Methyl-2-butenyl)oxyphthalimide
Potassium carbonate (7.55 g, 54.6 mmol) was added to a solution of N-hydroxyphthalimide (13.93 g, 85.4 mmol) in 150 mL of DMSO to give a wine-red colored solution. 4-Bromo-2-methyl-2-butene (20 g, 134 mmol) was added to the solution dropwise and the reaction was stirred for 16 hours at room temperature. The reaction was poured into 600 mL of ice water to give a white crystalline solid. The crude crystalline product was filtered, washed with ice water, and air dried. The crystalline product was recrystallized from ethanol to give 15.7 g, mp 97.degree.-98.degree. C.
(b) O-(3-Methyl-2-butenyl)hydroxylamine hydrochloride
Methylhydrazine (2 mL, 37.6 mmol) was added dropwise to a cooled solution (0.degree. C.) of N-(3-methyl-2-butenyl)oxyphthalimide (8.69 g, 37.6 mmol) in 30 mL of dichloromethane. A precipitate formed immediately. The reaction was warmed to room temperature and stirred for 2 hours. The reaction mixture was filtered and the filtrate diluted to 500 mL with diethyl ether. Anhydrous hydrogen chloride gas was bubbled into the dilute solution to a precipitate of the hydrochloride salt of the title product to give 5.2 g, mp 143.degree.-145.degree. C.
III. O-(3-(4[-Methoxyphenyl)-2-propynyl)hydroxylamine hydrochloride
(a) 3-(4'-Methoxyphenyl)-2-propynl-1-ol
Diethylamine (80 mL, propargyl alcohol (6.4 mL, 0.11 mol), copper(I)iodide (0.7 g), tetrahydrofuran (25 mL), and tetrakis(triphenylphosphine)palladium(o) (1.2 g) were placed in a 250-mL flask under nitrogen. A solution of p-iodoanisole (23.4 g, 0.1 mol) in 40 of tetrahydrofuran was added to the reaction dropwise over 30 minutes. The reaction was stirred for 16 hours at room temperature, then evaporated in vacuo to give a dark brown residue. The residue was dissolved in 200 mL of water and extracted four times with diethyl ether (200 mL). The combined extracts were dried over anhydrous sodium sulfate and evaporated to give a dark brown solid that was purified by column chromatography (silica gel), eluting with 9:1 hexane-ethyl acetate to give 15.38 g of the title product.
.sup.1 H NMR: .delta.(CDCL.sub.3) 7.2-7.3 (2H, d), 6.6-6.7 (2H, d), 4.25-4.40 (2H, d), 3.65 (3H, s), 1.85-2.05 (1H, t).
(b) N-(3-(4'-Methoxyphenyl)-2-propynyl)oxyphthalimide
Diethyl azodicarboxylate (21 mL, 104 mmol) was added dropwise to a solution of 3-(4'-methoxyphenyl)-2-propyn-1-ol (15.38 g, 94.8 mmol), N-hydroxyphthalimide (15.47 g, 94.8 mmol), and triphenylphosphine (24.9 g, 94.8 mmol), and in 500 mL of tetrahydrofuran at room temperature under nitrogen. The reaction was stirred for 24 hours, then evaporated in vacuo to give a crude solid. The crude solid was purified by column chromatography (silica gel), eluting with chloroform to give after evaporation of solvent a crystalline solid that was recrystallized from ethanol to give 20.13 g, mp 145.degree.-147.degree. C.
(c) O-(3-(4'-Methoxyphenyl)-2-propynyl)hydroxyamine hydrochloride
Methyl hydrazine (2 mL, 37.6 mmol) was added dropwise to a solution of N-(3-(4'-methoxyphenyl)-2-propynyl)oxyphthalmide (11.55 g, 37.6 mmol) in 40 mL of dichloromethane at 0.degree. C. The reaction was warmed to room temperature and stirred for 3 hours. The reaction was filtered and the filtrate was diluted to 500 mL with diethyl ether. Anhydrous hydrogen chloride gas was bubbled into the dilute solution to give a precipitate of the hydrochloride salt of the title product, 8.21 g, mp 140.degree.-142.degree. C.
IV. O-(2,5-Hexadiynyl)hydroxylamine hydrochloride
(a) 2,5-Hexadiyn-1-ol
(.+-.)-Acetaldehyde ethyl propargyl acetal (34 mL, 0.25 mol) was added to a heated (45.degree. C.) solution of ethyl magnesium bromide (3.0 M solution in diethyl ether; 90 mL, 0.27 mol) in 300 mL of dry tetrahydrofuran. After stirring for 30 minutes, copper(I)chloride (1.25 g) was added and reaction mixture heated at 50.degree. C. for 30 minutes. Propargyl bromide (32 mL, 0.28 mol) was added to the reaction mixture dropwise while heating the reaction at 60.degree. C. After the addition, the reaction was heated at 60.degree. C. for 1.5 hours, then cooled to room temperature.
The reaction mixture was poured into 250 mL of aqueous solution of 5 g of KCN and 38 g of NH.sub.4 Cl. The layers were separated and the aqueous layer extracted three times with 200 mL of diethyl ether. The combined organic layers were washed with saturated NH.sub.4 Cl solution, dried over anhydrous Na.sub.2 SO.sub.4, and evaporated in vacuo to give a brown oil.
The crude brown oil was dissolved in 100 mL of methanol and 1 mL of concentrated HCl and refluxed for 45 minutes. The reaction mixture was evaporated in vacuo to give a brown liquid that was dissolved in 100 mL of saturated NH.sub.4 C.sub.1 and extracted six times with 150 mL of diethyl ether. The combined extracts were dried over anhydrous Na.sub.2 SO.sub.4 and evaporated in vacuo to give a brown liquid. This was purified by vacuum distillation (b.p. 60.degree. C./0.2 mm Hg) to give 16.2 g of the title product.
.sup.1 H NMR: .delta.(CDCl.sub.3) 4.2 (2H, m), 3.1-3.3 (2H, m), 2.8-3.1 (1H, br.s), 2.05-2.2 (1H, m).
(b) N-(2,5-Hexadiynyl)oxyphthalimide
Diethyl azodicarboxylate (24 mL, 117 mmol) was added dropwise to a solution of N-hydroxyphthalimide (17.33 g, 106 mmol), triphenylphosphine (27.9 g, 106 mmol) and 2,5-hexadiyn-1-ol (10 g, 106 mmol) in 400 mL of tetrahydrofuran and stirred for 72 hours at room temperature. The reaction was evaporated in vacuo to give a yellow solid that was purified by column chromatography (silica gel), eluting with dichloromethane to give a light yellow solid. This was recrystallized from ethanol to give 15.3 g of the title product, mp 134.degree.-135.degree. C.
(c) O-(2,5-Hexadiynyl)hydroxylamine hydrochloride
Methyl hydrazine (2 mL, 37.6 mmol) was added dropwise to a solution of N-(2,5-hexadiynyl)oxyphthalimide (9 g, 37.6 mmol) in 75 mL of dichloromethane and stirred at room temperature for 3 hours. The reaction mixture was filtered and the filtrate diluted to 400 mL with diethyl ether. Anhydrous hydrogen chloride gas was bubbled into the dilute solution to give a precipitate of the hydrochloride salt of the title product, 3.96 g, mp 141.degree.-143.degree. C.
The compounds of the present invention are centrally acting muscarinic agents and are thus useful as analgesic agents for the treatment of pain in mammals including man, as sleep aids, and as agents for treating the symptoms of senile dementia, Alzheimer's disease, Huntington's chorea, tardive dyskinesia, hyperkinesia, mania, or similar conditions of cerebral insufficiency characterized by decreased cerebral acetylcholine production or release.
The biological activity of compounds of the present invention was evaluated using a number of tests. The activity of compounds of this invention as central muscarinic binding site agonists and antagonists was measured. In the RQNB screening assay, which is described more fully by Mark Watson, et al. J. Pharmacol. Exp. Ther. 1986;237(2):411, rat cerebral cortex tissue was treated with radiolabeled quinuclidinyl benzilate, a known muscarinic antagonist. The concentrations of test compound required to inhibit 50% of the binding of this muscarinic antagonist were then determined.
Similarly, in the RCMD screening assay, described more fully by Vickroy T. W., et al., 1984;229(3):747, rat cerebral cortex tissue was treated with radiolabeled cis-methyldioxolane, a known muscarinic agonist. The concentrations of test compounds required to inhibit of the binding of this muscarinic agonist were then determined. These values are reported as IC.sub.50 concentrations in Table 4 and demonstrate that the compounds of the present invention possess significant muscarinic activity.
TABLE 4______________________________________ IC.sub.50 nM IC.sub.50 nMExample No. RCMD RQNB______________________________________ 2 12.5 3112 3 18.2 24558 4 3.5 3519 5 133 5947 6 120 3846 7 46 2030 8 53 4775 48 116 882049 (Isomer A) 12.9 43449 (Isomer B) 256 9650 77 8 958 78 25 4680 79 1 807 80 12 4234 81 4 2063 82 121 19308 83 226 19617 84 320 11679 85 157 12632 87 110.1 13101 89 27.75 6927 90 147.8 14803 91 218.7 17658 93 27.86 4443 96 29.86 6092 98 12.31 1305 99 33.73 1934102 53.16 6300103 88.93 11089104 28.29 6399105 235.53 69540106 13.55 2339107 56.92 7728108 16.53 2692109 58.22 6998113 246.2 12636117 7.09 1279118 113.7 8319120 0.15 44121 1.02 181______________________________________
Similarly, in a RQNB binding assay in CHO cells expressing recombinant human m1 or m2 muscarinic receptors (CHO-hm1 and CHO-hm2)(see Bonner T, Trends Pharmacol. Sci. 1989;(Suppl. on Subtypes of Muscarinic Receptors IV) 1-15), the following data set forth in Table 5 were obtained which further demonstrates the selectivity of certain compounds for the ml receptor.
TABLE 5______________________________________ RQNB m2 RQNB mL RQNB m2Example No. IC.sub.50 nM IC.sub.50 nM RQNB mL______________________________________ 55 31720 8840 3.6 67 25800 5420 4.76 87 84400 10600 7.96 89 52000 7680 6.80 91 69300 16600 4.2 93 20800 4030 5.2 95 47910 9850 4.86 96 27200 5460 5.0 98 4020 1120 3.6100 20700 3340 6.2102 24750 4010 6.2103 38700 14120 2.74104 46630 15120 3.08105 44100 12330 3.58106 8600 1800 4.77113 85800 15360 5.6117 45080 24580 1.83120 7510 870 8.69125 32590 6200 5.24141 11250 4560 2.50142 39620 21370 1.85143 24370 9960 2.45144 16110 13910 1.16145 2160 1590 1.36146 2480 950 2.61147 53140 65320 0.81148 117010 117420 1.00149 27620 21420 1.29150 43480 29580 1.47151 6120 2820 2.17152 30510 15500 1.97153 12180 6340 1.92154 32710 22160 1.48155 2950 230 12.73156 1980 110 18.66157 4640 17250 0.27158 8300 16210 0.50159 9490 4360 2.18160 5280 9110 0.58161 6020 5000 1.20162 3680 1400 2.63163 16860 9680 1.74164 27970 17730 1.58165 5830 5630 1.04166 41080 33640 1.22167 15270 5840 2.61168 42030 24960 1.68169 8110 3830 2.12170 1850 1050 1.76______________________________________
In therapeutic use as agents for treating pain or for treating cerebral insufficiency, the compounds utilized in the pharmaceutical method of this invention are administered to the patient at dosage levels of from 0.07 to 700 mg per day. For a normal human adult of approximately 70 kg of body weight, this translates into a dosage of from 0.01 to 100 mg/kg of body weight per day. The specific dosages employed, however, may be varied depending upon the requirements of the patient, the severity of the condition being treated, and the activity of the compound being employed. The per day. The specific dosages employed, however, may be varied depending upon the requirements of the patient, the severity of the condition being treated, and the activity of the compound being employed. The determination of optimum dosages for a particular situation is within the skill of the art.
For preparing pharmaceutical compositions from the compounds of this invention, inert, pharmaceutically acceptable carriers can be either solid or liquid. Solid form preparations include powders, tablets, dispersible granules, capsules, cachets, and suppositories.
A solid carrier can be one or more substances which may also act is diluents, flavoring agents, solubilizers, lubricants, suspending agents, binders, or tablet disintegrating agents; it can also be an encapsulating material.
In powders, the carrier is a finely divided solid which is in a mixture with the finely divided active component. In tablets, the active compound is mixed with the carrier having the necessary binding properties in suitable proportions and compacted in the shape and size desired.
For preparing suppositories, a low-melting wax such as a mixture of fatty acid glycerides and cocoa butter is first melted, and the active ingredient is dispersed therein by, for example, stirring. The molten homogeneous mixture is then poured into convenient sized molds and allowed to cool and solidify.
Powders and tablets preferably contain between about 5% to about 70% by weight of the active ingredient. Suitable carriers are magnesium carbonate, magnesium stearate, talc, lactose, sugar, pectin, dextrin, starch, tragacanth, methyl cellulose, sodium carboxymethyl cellulose, a low-melting wax, cocoa butter, and the like.
The term "preparation" is intended to include the formulation of the active compound with encapsulating material as a carrier providing a capsule in which the active component (with or without other carriers) is surrounded by a carrier, which is thus in association with it. In a similar manner, cachets are also included.
Tablets, powders, cachets, and capsules can be used as solid dosage forms suitable for oral administration.
Liquid form preparations include solutions suitable for oral or parenteral administration, or suspensions, and emulsions suitable for oral administration. Sterile water solutions of the active component or sterile solutions of the active component in solvents comprising water, ethanol, or propylene glycol may be mentioned as examples of liquid preparations suitable for parenteral administration.
Sterile solutions may be prepared by dissolving the active component in the desired solvent system, and then passing the resulting solution through a membrane filter to sterilize it or, alternatively, by dissolving the sterile compound in a previously sterilized solvent under sterile conditions.
Aqueous solutions for oral administration can be prepared by dissolving the active compound in water and adding suitable flavorants, coloring agents, stabilizers, and thickening agents as desired. Aqueous suspensions for oral use can be made by dispersing the finely divided active component in water together with a viscous material such as natural or synthetic gums, resins, methyl cellulose, sodium carboxymethyl cellulose, and other suspending agents known to the pharmaceutical formulation art.
Preferably, the pharmaceutical preparation is in unit dosage form. In such form, the preparation is divided into unit doses containing appropriate quantities of the active component. The unit dosage form can a packaged preparation, the package containing discrete quantities of the preparation, for example, packeted tablets, capsules, and powders in vials or ampoules. The unit dosage form can also be capsule, cachet, or tablet itself, or it can be the appropriate number of any of these packaged forms. ##STR83##

Number	Name	Date	Kind
3004979	Druey et al.	Oct 1961
4710508	Bergmeier et al.	Dec 1987

Number	Date	Country
2086292	Dec 1971	FRX
WO9308192	Apr 1993	WOX

	Number	Date
Parent	778412	Oct 1991
Parent	641478	Jan 1991
Parent	591647	Oct 1990
Parent	488916	Mar 1990

Azabicyclo and azacyclo oxime and amine cholinergic agents and methods of treatment

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Dissertation Abstract Int., B, 1984 45, (7), 2120; CA 102:113440m.
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TiPS, Suppl. on Subtypes of Muscarinic Receptors IV, pp. 11-15, 1989.
The Lancet, vol. 2, p. 1403, 1976.
Journal of the Neurological Sciences, vol. 34, pp. 247-265, 1977.
The Lancet, vol. 1, pp. 668-670, 1977.
Neurobiology of Aging, vol. 4, pp. 25-30, 1983.
Experimental Aging Research, vol. 9, No. 3, pp. 211-214, 1983.
Brit. J. Psychiat., vol. 138, pp. 46-50, 1981.