Patent Grant
8022091
The present invention relates to novel triazole derivatives which have an inhibitory effect on the binding between sphingosine-1-phosphate having various physiological actions and its receptor Edg-1 (Endothelial differentiation gene receptor type-1, S1P1). The present invention also relates to pharmaceutical preparations comprising these compounds as active ingredients, and synthetic intermediates for these compounds.
Sphingosine-1-phosphate (hereinafter referred to as “S1P”) is a physiologically active lipid which is generated when sphingolipids (typified by sphingomyelin) are metabolized in cells. S1P is known to have a wide variety of actions such as cell differentiation induction, cell growth stimulation, cell motility inhibition and apoptosis inhibition, and is also known to show physiological actions such as angiogenesis, bradycardia induction, inflammatory cell activation and platelet activation (Non-patent Document 1).
As SIP receptors, the following 5 subtypes have been reported: Edg-1(S1P1), Edg-3(S1P3), Edg-5(S1P2), Edg-6(S1P4) and Edg-8(S1P5) (Non-patent Document 2).
Among these subtypes, Edg-1(S1P1) is highly expressed in immunocytes (e.g., T cells, dendritic cells) and vascular endothelial cells, suggesting that Edg-1(S1P1) contributes deeply to S1P-stimulated T cell migration (Non-patent Document 3), mast cell migration (Non-patent Document 4), T and B cell egress from lymphoid organs (Non-patent Document 5) and angiogenesis (Non-patent Document 6), and is involved in autoimmune diseases such as Crohn's disease, irritable colitis, Sjogren's syndrome, multiple sclerosis and systemic lupus erythematosus, as well as other diseases such as rheumatoid arthritis, asthma, atopic dermatitis, rejection after organ transplantation, cancer, retinopathy, psoriasis, osteoarthritis, age-related macular degeneration, etc.
Thus, ligands for Edg-1(S1P1) would be effective for treatment or prevention of these diseases.
Edg-1(S1P1) ligands previously known include certain types of thiophene derivatives (Non-patent Document 7), phosphoric acid derivatives (Patent Documents 1 and 2, Non-patent Documents 8 and 9) and thiazolidine derivatives (Patent Document 3), carboxylic acid derivatives (Patent Documents 4, 5, 6 and 8, Non-patent Documents 10 and 11), amino group-containing derivatives (Patent Document 7), and pyrrole derivatives (Patent Document 9).
The present invention has as an object to provide a compound with a new skeletal structure, which compound has an action of inhibiting binding between S1P and its receptor Edg-1 (S1P1) and is useful as a pharmaceutical product.
The inventors of the present invention have diligently studied in an attempt to find ligand compounds for Edg-1 (S1P1). As a result, they find that the object is attained with a triazole derivative of Formula (I) below or a pharmaceutically acceptable salt thereof (a feature is that R3 in the formula is an optionally substituted aryl group). This finding has led to the accomplishment of the present invention. The triazole derivative of Formula (I) below with this feature is a completely new compound. Although compounds having an alkyl group corresponding to R3 of Formula (I) are commercially available from Bionet as reagents, they differ in structure from that of the compound of the subject application, and pharmaceutical use of the compounds of Bionet has not been known at all.
The following are embodiments of the triazole derivatives of Formula (I) and compounds of Formula (II), which are intermediates of the triazole derivatives (hereinafter, all of them will be referred to as “compounds of the present invention”).
1. A compound represented by Formula (I)
or a pharmaceutically acceptable salt thereof, wherein
A represents:
an oxygen atom,
a sulfur atom,
a group represented by Formula —SO—,
a group represented by Formula —SO2—,
a group represented by Formula —CH2—, or
a group represented by Formula —NR6—, wherein R6 represents a hydrogen atom or an alkyl group having from 1 to 6 carbon atoms;
R1 represents;
a hydrogen atom,
an alkyl group having from 1 to 6 carbon atoms and optionally substituted with a substituent(s) selected from the group consisting of:
a cycloalkyl group having from 3 to 8 carbon atoms,
an alkenyl group having from 2 to 8 carbon atoms,
an alkynyl group having from 2 to 8 carbon atoms, or
a phenyl group;
R1A represents:
a hydrogen atom or
an alkyl group having from 1 to 6 carbon atoms;
R1 and R1A optionally form, together with a carbon atom to which said R1 and R1A are attached, a cycloalkyl group having from 3 to 6 carbon atoms;
R2 represents:
a hydrogen atom,
an alkyl group having from 1 to 6 carbon atoms,
an alkenyl group having from 2 to 8 carbon atoms,
an alkynyl group having from 2 to 8 carbon atoms, or
a cycloalkyl group having from 3 to 6 carbon atoms;
R3 represents an optionally substituted aryl group;
R4 represents:
a hydrogen atom or
an alkyl group having from 1 to 6 carbon atoms and optionally substituted with a carboxyl group;
R5 represents:
(i) an alkyl group having from 1 to 10 carbon atoms,
(ii) an alkyl group having from 1 to 10 carbon atoms and substituted with 1 to 2 substituents selected from the group consisting of:
(iii) a cycloalkyl group having from 3 to 8 carbon atoms,
(iv) an alkenyl group having from 2 to 8 carbon atoms,
(v) an alkenyl group having from 2 to 8 carbon atoms and substituted with a phenyl group,
(vi) an alkynyl group having from 2 to 8 carbon atoms,
(vii) an alkynyl group having from 2 to 8 carbon atoms and substituted with a phenyl group, or
(viii) an optionally substituted aryl group.
2. The compound of Embodiment 1, or a pharmaceutically acceptable salt thereof, wherein, in Formula (I):
R1 represents:
a hydrogen atom,
an alkyl group having from 1 to 6 carbon atoms,
an alkyl group having from 1 to 6 carbon atoms and substituted with a phenyl group,
a cycloalkyl group having from 3 to 8 carbon atoms,
an alkenyl group having from 2 to 8 carbon atoms,
an alkynyl group having from 2 to 8 carbon atoms, or
a phenyl group;
R1A represents a hydrogen atom;
R2 represents:
an alkyl group having from 1 to 6 carbon atoms,
an alkenyl group having from 2 to 8 carbon atoms,
an alkynyl group having from 2 to 8 carbon atoms, or
a cycloalkyl group having from 3 to 6 carbon atoms;
R4 represents:
a hydrogen atom, or
an alkyl group having from 1 to 6 carbon atoms;
R5 represents:
(i) an alkyl group having from 1 to 10 carbon atoms,
(ii) an alkyl group having from 1 to 10 carbon atoms and substituted with 1 to 2 substituents selected from the group consisting of:
(iii) a cycloalkyl group having from 3 to 8 carbon atoms,
(iv) an alkenyl group having from 2 to 8 carbon atoms,
(v) an alkenyl group having from 2 to 8 carbon atoms and substituted with a phenyl group,
(vi) an alkynyl group having from 2 to 8 carbon atoms,
(vii) an alkynyl group having from 2 to 8 carbon atoms and substituted with a phenyl group, or
(viii) an optionally substituted aryl group.
3. The compound of Embodiment 1 or 2, or a pharmaceutically acceptable salt thereof, wherein A is an oxygen atom or a group represented by Formula —NR6—.
4. The compound of Embodiment 1 or 2, or a pharmaceutically acceptable salt thereof, wherein A is an oxygen atom.
5. The compound of Embodiment 1 or 2, or a pharmaceutically acceptable salt thereof, wherein A is a group represented by Formula —NH—.
6. The compound of any one of Embodiments 1 and 3-5, or a pharmaceutically acceptable salt thereof, wherein:
R1 represents an alkyl group having from 1 to 6 carbon atoms and optionally substituted with a substituent(s) selected from the group consisting of:
a hydroxyl group,
a halogen atom,
an alkoxy group having from 1 to 6 carbon atoms, said alkoxy group optionally substituted with a phenyl group; and
a phenyl group, optionally substituted with a substituent(s) selected from the group consisting of a halogen atom and an alkyl group having from 1 to 6 carbon atoms;
R1A represents:
a hydrogen atom; or
an alkyl group having from 1 to 6 carbon atoms; and
R1 and R1A optionally form, together with a carbon atom to which said R1 and R1A are attached, a cycloalkyl group having from 3 to 6 carbon atoms.
7. The compound of any one of Embodiments 1 and 3-5, or a pharmaceutically acceptable salt thereof, wherein:
R1 is:
an alkyl group having from 1 to 6 carbon atoms and optionally substituted with a halogen atom(s), or
a benzyl group optionally substituted with a substituent(s) selected from the group consisting of a halogen atom and an alkyl group having from 1 to 6 carbon atoms: and
R1A is a hydrogen atom.
8. The compound of any one of Embodiments 1-5, or a pharmaceutically acceptable salt thereof, wherein R1 is a methyl group or an ethyl group, and R1A is a hydrogen atom.
9. The compound of any one of Embodiments 1-8, or a pharmaceutically acceptable salt thereof, wherein R4 is a hydrogen atom.
10. The compound of any one of Embodiments 1-9, or a pharmaceutically acceptable salt thereof, wherein R2 is an alkyl group having from 1 to 6 carbon atoms, or a cycloalkyl group having from 3 to 6 carbon atoms.
11. The compound of any one of Embodiments 1-9, or a pharmaceutically acceptable salt thereof, wherein R2 is an ethyl group or a cyclopropyl group.
12. The compound of any one of Embodiments 1 and 3-11, or a pharmaceutically acceptable salt thereof, wherein R5 is:
(i) an alkyl group having from 1 to 10 carbon atoms,
(ii) an alkyl group having from 1 to 10 carbon atoms and substituted with 1 to 2 substituents selected from the group consisting of:
(iii) an alkenyl group having from 2 to 8 carbon atoms and optionally substituted with a phenyl group, or
(iv) a phenyl group, a naphthyl group, a thienyl group, a pyrrolyl group, a pyrazolyl group, a pyridyl group, a furanyl group, a benzothienyl group, an isoquinolinyl, an isoxazolyl group, a thiazolyl group, a benzothiadiazolyl group, a benzoxadiazolyl group, a dihydrobenzodioxepinyl group, a dihydrobenzodioxynyl group, a benzodioxolyl group, a dihydrobenzofuranyl group, an indanyl group, an uracil group, a coumaryl group, a chromanyl group, a dihydroindolyl group, a tetrahydronaphthyl group, or a tetrahydroisoquinolinyl group, each optionally substituted with 1 to 5 substituents selected from the group consisting of:
an alkyl group having from 1 to 10 carbon atoms and substituted with a cycloalkyl group having from 3 to 8 carbon atoms,
an alkyl group having from 1 to 10 carbon atoms and substituted with a naphthyl group,
an alkenyl group having from 2 to 8 carbon atoms and substituted with a phenyl group,
a phenyl group or a naphthyl group, each optionally substituted with 1 to 5 substituents selected from the group consisting of:
a pyrrolyl group optionally substituted with a substituent(s) selected from the group consisting of an alkyl group having from 1 to 6 carbon atoms and a methoxycarbonyl group;
a furanyl group optionally selected from a substituent(s) selected from the group consisting of an alkyl group having from 1 to 6 carbon atoms, a trifluoromethyl group, and a halogen atom;
a thienyl group optionally substituted with a substituent (s) selected from the group consisting of an alkyl group having from 1 to 6 carbon atoms, a trifluoromethyl group, a thiadiazolyl group, an oxazolyl group, and a halogen atom; or
a benzothienyl group, a dihydrobenzodioxepinyl group, a benzodioxolyl group, a dihydrobenzodioxynyl group, a dihydrobenzofuranyl group, a tetrahydronaphthyl group, an indanyl group, a thiadiazolyl group, a benzoxadiazolyl group, or a benzothiadiazolyl group, each optionally substituted with a substituent(s) selected from the group consisting of an alkyl group having from 1 to 6 carbon atoms and a halogen atom.
14. The compound of any one of Embodiments 1-11, or a pharmaceutically acceptable salt thereof, wherein R5 is:
an alkyl group having from 1 to 6 carbon atoms and substituted with a naphthyl group,
an alkenyl group having from 2 to 6 carbon atoms and substituted with a phenyl group;
an unsubstituted phenyl group,
a phenyl group substituted with 1 to 5 substituents selected from the group consisting of a methyl group, a methoxy group, and a halogen atom,
a phenyl group substituted with 1 to 3 substituents selected from the group consisting of:
a naphthyl group optionally substituted with a substituent(s) selected from the group consisting of:
a benzothienyl group, a benzoxadiazolyl group, a benzodioxolyl group, a dihydrobenzodioxynyl group, a dihydrobenzofuranyl group, an indanyl group, or a benzothiadiazolyl group, each optionally substituted with a substituent(s) selected from the group consisting of an alkyl group having from 1 to 6 carbon atoms and a halogen atom.
15. The compound of any one of Embodiments 1-11, or a pharmaceutically acceptable salt thereof, wherein R5 is:
a phenyl group substituted at 3 and 4 positions each with a halogen atom, or
a naphthyl group optionally substituted with a substituent(s) selected from the group consisting of a halogen atom, an alkyl group having from 1 to 6 carbon atoms, and a cyano group.
16. The compound of any one of Embodiments 1-15, or a pharmaceutically acceptable salt thereof, wherein R3 is a phenyl group, a naphthyl group, a pyrazolyl group, a pyridyl group, an indolyl group, a benzothiazolyl group, a benzothiadiazolyl group, a pyrazolopyrimidinyl group, a quinolinyl group, an isoquinolinyl group, a benzothienyl group, or a dihydroquinolinonyl group, each optionally substituted with 1 to 3 substituents selected from the group consisting of the following substituents:
an alkyl group having from 1 to 6 carbon atoms and optionally substituted with a fluorine atom(s),
a cycloalkyl group having from 3 to 8 carbon atoms,
a halogen atom,
an alkoxy group having from 1 to 6 carbon atoms, said alkoxy group optionally substituted with a substituent(s) selected from the group consisting of a fluorine atom, a phenyl group, an amino group substituted with two alkyl groups each having from 1 to 4 carbon atoms, and a morpholino group;
a phenoxy group,
a phenyl group,
a carboxyl group,
an alkoxycarbonyl group having from 2 to 10 carbon atoms,
a hydroxyl group,
a monocylic saturated hydrocarbon group having from 2 to 7 carbon atoms and having a nitrogen atom(s) as a ring atom(s), said saturated hydrocarbon group optionally substituted with an alkyl group(s) having from 1 to 6 carbon atoms,
a nitrogen-containing monocylic unsaturated hydrocarbon group,
a morpholinyl group optionally substituted with an alkyl group(s) having from 1 to 6 carbon atoms,
a piperazino group optionally substituted with a substituent(s) selected from the group consisting of:
Formula —NR7R8, wherein:
a 2-naphthyl group, optionally substituted with a substituent(s) selected from the group consisting of a halogen atom and an alkyl group having from 1 to 6 carbon atoms,
a 3-pyrazolyl group, optionally substituted with a substituent(s) selected from the group consisting of an alkyl group having from 1 to 6 carbon atoms, a trifluoromethyl group, and a halogen atom, or
a 5-benzothiazolyl group, a 5-benzothiadiazolyl group, a 7-dihydroquinolinonyl group, a 7-isoquinolinyl group, a 7-quinolinyl group, a 3-pyridyl group, or an indolyl group, each optionally substituted with an alkyl group(s) having from 1 to 6 carbon atoms,
an unsubstituted phenyl group, or
a substituted phenyl group (A), (B), or (C) below:
(A) a phenyl group substituted at 4 position with a substituent selected from the group consisting of:
wherein said phenyl group substituted at 4 position is further optionally substituted at 3 position with a substituent selected from the group consisting of an alkyl group having from 1 to 6 carbon atoms, a halogen atom, and an alkoxy group having from 1 to 6 carbon atoms;
(B) a phenyl group substituted at 3 position with a substituent selected from the group consisting of:
wherein said phenyl group substituted at 3 position is further optionally substituted with one or two alkyl groups each having from 1 to 6 carbon atoms, or is further optionally substituted at 4 position with a halogen atom; and
(C) a phenyl group substituted at 3 position with a substituent selected from the group consisting of nitrogen-containing groups (i)-(v) below, said phenyl group further optionally substituted at 4 position with a halogen atom:
R7 and R8 optionally form, together with the nitrogen atom to which said R7 and R8 are attached, a 3- to 8-membered saturated hydrocarbon ring, said ring optionally substituted with a substituent(s) selected from the group consisting of a dimethylenedioxy group, an oxo group, and a hydroxyl group.
18. The compound of any one of Embodiments 1-15, or a pharmaceutically acceptable salt thereof, wherein R3 is a phenyl group substituted at 3 position with a substituent selected from the group consisting of nitrogen-containing groups (i)-(v) below, said phenyl group further optionally substituted at 4 position with a halogen atom:
(i) a monocylic saturated hydrocarbon group having from 2 to 7 carbon atoms and having a nitrogen atom(s) as a ring atom(s), said saturated hydrocarbon group optionally substituted with an alkyl group(s) having from 1 to 6 carbon atoms,
(ii) a nitrogen-containing monocylic unsaturated hydrocarbon group,
(iii) a morpholinyl group optionally substituted with an alkyl group(s) having from 1 to 6 carbon atoms,
(iv) a piperazino group, optionally substituted with an alkanoyl group having from 2 to 7 carbon atoms or an alkyl group having from 1 to 6 carbon atoms and optionally substituted with a substituent(s) selected from the group consisting of:
(v) Formula —NR7R8, wherein:
R7 and R8 optionally form, together with the nitrogen atom to which said R7 and R8 are attached, a 3- to 8-membered saturated hydrocarbon ring, said ring optionally substituted with a substituent(s) selected from the group consisting of a dimethylenedioxy group, an oxo group, and a hydroxyl group.
19. The compound of any one of Embodiments 1-15, or a pharmaceutically acceptable salt thereof, wherein R3 is a phenyl group substituted at 4 position with a fluorine atom or a chlorine atom.
20. The compound of any one of Embodiments 1-15, or a pharmaceutically acceptable salt thereof, wherein R3 is a 6-indolyl group.
21. A pharmaceutical preparation, comprising the compound of any one of Embodiments 1-20 or a pharmaceutically acceptable salt thereof.
22. The pharmaceutical preparation of Embodiment 21, which is for treatment of an autoimmune disease, such as Crohn disease, hypersensitivity colitis, Sjogren's syndrome, multiple sclerosis, and systemic lupus erythematosus, rheumatoid arthritis, asthma, atopic dermatitis, organ transplant rejection, cancer, retinopathy, psoriasis, osteoarthritis, or age-related macular degeneration.
23. A compound represented by Formula (II)
or a salt thereof, wherein R1, R1A, R2, and R3 are as defined in Embodiment 1, and A′ represents an oxygen atom or NH.
24. The compound of Embodiment 23, or a salt thereof, wherein, in Formula (II):
A′ represents an oxygen atom;
R1 represents:
a hydrogen atom,
an alkyl group having from 1 to 6 carbon atoms, an alkyl group having from 1 to 6 carbon atoms and substituted with a phenyl group,
a cycloalkyl group having from 3 to 8 carbon atoms,
an alkenyl group having from 2 to 8 carbon atoms,
an alkynyl, group having from 2 to 8 carbon atoms, or
a phenyl group;
R1A represents a hydrogen atom; and
R2 represents;
an alkyl group having from 1 to 6 carbon atoms,
an alkenyl group having from 2 to 8 carbon atoms,
an alkynyl group having from 2 to 8 carbon atoms, or
a cycloalkyl group having from 3 to 6 carbon atoms.
25. The compound of Embodiment 23, or a salt thereof, wherein, in Formula (II):
A′ represents NH;
R1 represents:
a hydrogen atom,
an alkyl group having from 1 to 6 carbon atoms,
an alkyl group having from 1 to 6 carbon atoms and substituted with a phenyl group,
a cycloalkyl group having from 3 to 8 carbon atoms,
an alkenyl group having from 2 to 8 carbon atoms,
an alkynyl group having from 2 to 8 carbon atoms, or
a phenyl group;
R1A represents a hydrogen atom; and
R2 represents:
an alkyl group having from 1 to 6 carbon atoms,
an alkenyl group having from 2 to 8 carbon atoms,
an alkynyl group having from 2 to 8 carbon atoms, or
a cycloalkyl group having from 3 to 6 carbon atoms.
26. The compound of Embodiment 23, or a salt thereof, wherein:
R1 represents an alkyl group having from 1 to 6 carbon atoms and optionally substituted with a substituent(s) selected from the group consisting of:
a hydroxyl group,
a halogen atom,
an alkoxy group having from 1 to 6 carbon atoms, said alkoxy group optionally substituted with a phenyl group, and
a phenyl group, optionally substituted with a substituent(s) selected from the group consisting of a halogen atom and an alkyl group having from 1 to 6 carbon atoms;
R1A represents a hydrogen atom or an alkyl group having from 1 to 6 carbon atoms; and
R1 and R1A optionally form, together with a carbon atom to which said R1 and R1A are attached, a cycloalkyl group having from 3 to 6 carbon atoms.
27. The compound of Embodiment 23, or a salt thereof, wherein:
R1 is an alkyl group having from 1 to 6 carbon atoms and optionally substituted with a halogen atom(s), or a benzyl group optionally substituted with a substituent(s) selected from the group consisting of a halogen atom and an alkyl group having from 1 to 6 carbon atoms; and
R1A is a hydrogen atom.
28. The compound of any one of Embodiments 23-25, or a salt thereof, wherein R1 is a methyl group or an ethyl group, and R1A is a hydrogen atom.
29. The compound of any one of Embodiments 23-28, or a salt thereof, wherein R2 is an alkyl group having from 1 to 6 carbon atoms, or a cycloalkyl group having from 3 to 8 carbon atoms.
30. The compound of any one of Embodiments 23-28, or a salt thereof, wherein R2 is an ethyl group or a cyclopropyl group.
31. The compound of any one of Embodiments 23-30, or a salt thereof, wherein;
R3 is a phenyl group, a naphthyl group, a pyrazolyl group, a pyridyl group, an indolyl group, a benzothiazolyl group, a benzothiadiazolyl group, a pyrazolopyrimidinyl group, a quinolinyl group, an isoquinolinyl group, a benzothienyl group, or a dihydroquinolinonyl group, each optionally substituted with 1 to 3 substituents selected from the group consisting of the following substituents:
an alkyl group having from 1 to 6 carbon atoms and optionally substituted with a fluorine atom(s),
a cycloalkyl group having from 3 to 8 carbon atoms,
a halogen atom,
an alkoxy group having from 1 to 6 carbon atoms, said alkoxy group optionally substituted with a substituent(s) selected from the group consisting of a fluorine atom, a phenyl group, an amino group substituted with two alkyl groups each having from 1 to 4 carbon atoms, and a morpholino group,
a phenoxy group,
a phenyl group,
a carboxyl group,
an alkoxycarbonyl group having from 2 to 10 carbon atoms,
a hydroxyl, group,
a monocylic saturated hydrocarbon group having from 2 to 7 carbon atoms and having a nitrogen atom(s) as a ring atom(s), said saturated hydrocarbon group optionally substituted with an alkyl group(s) having from 1 to 6 carbon atoms;
a nitrogen-containing monocylic unsaturated hydrocarbon group,
a morpholinyl group optionally substituted with an alkyl group(s) having from 1 to 6 carbon atoms,
a piperazino group optionally substituted with a substituent(s) selected from the group consisting of:
Formula —NR7R8, wherein:
R7 and R8 optionally form, together with the nitrogen atom to which said R7 and R8 are attached, a 3- to 8-membered saturated hydrocarbon ring, said ring optionally substituted with a substituent(s) selected from the group consisting of a dimethylenedioxy group, an oxo group, and a hydroxyl group.
32. The compound of any one of Embodiments 23-30, or a salt thereof, wherein R3 is:
a 2-naphthyl group, optionally substituted with a substituent(s) selected from the group consisting of a halogen atom and an alkyl group having from 1 to 6 carbon atoms;
a 3-pyrazolyl group, optionally substituted with a substituent(s) selected from the group consisting of an alkyl group having from 1 to 6 carbon atoms, a trifluoromethyl group, and a halogen atom;
a 5-benzothiazolyl group, a 5-benzothiadiazolyl group, a 7-dihydroquinolinonyl group, a 7-isoquinolinyl group, a 7-quinolinyl group, a 3-pyridyl group, or an indolyl group, each optionally substituted with an alkyl group(s) having from 1 to 6 carbon atoms;
an unsubstituted phenyl group; or
a substituted phenyl group (A), (B), or (C) below:
The present invention is described in detail as follows.
The term “halogen atoms means a fluorine atom, a chlorine atom, a bromine atom, or an iodine atom.
The term “alkyl group having from 1 to 6 carbon atoms” refers to a linear or branched alkyl group containing 1 to 6 carbon atoms. Examples include a methyl group, an ethyl group, a n-propyl group, an isopropyl group, a n-butyl group, an isobutyl group, a tert-butyl group, a sec-butyl group, a n-pentyl group, an isopentyl group, a neopentyl group, a tert-pentyl group, and a n-hexyl group.
The term “cycloalkyl group having from 3 to 8 carbon atoms” refers to a cycloalkyl group containing 3 to 8 carbon atoms. Examples include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, and a cyclohexyl group.
The term “alkenyl group having from 2 to 8 carbon atoms” refers to a linear or branched alkenyl group containing 2 to 8 carbon atoms. Examples include a vinyl group, an allyl group, a 1-propenyl group, an isopropenyl group, a 1-butenyl group, a 2-butenyl group, a 3-butenyl group, a 1,3-butadienyl group, a 2-methylallyl group, a 2-methyl-propenyl group, a 2-pentenyl group, and a 3-methyl-but-2-enyl group.
The term “alkynyl group having from 2 to 8 carbon atoms” refers to a linear or branched alkynyl group containing 2 to 8 carbon atoms. Examples include an ethynyl group, a 2-propynyl group, a 2-butynyl group, a 1-methyl-prop-2-ynyl group, a 2-pentynyl group, and a 4-pentynyl group.
The term “alkoxy group having from 1 to 6 carbon atoms” refers to a linear or branched alkoxy group containing 1 to 6 carbon atoms. Examples include a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, a butoxy group, an isobutoxy group, a sec-butoxy group, a tert-butoxy group, a pentyloxy group, and a hexyloxy group.
The term “alkyl group having from 1 to 10 carbon atoms” refers to a linear or branched alkyl group containing 1 to 10 carbon atoms. Examples include a methyl group, an ethyl group, a n-propyl group, an isopropyl group, a n-butyl group, an isobutyl group, a tert-butyl group, a sec-butyl group, a n-pentyl group, an isopentyl group, a neopentyl group, a tert-pentyl group, a n-hexyl group, a n-heptyl group, a n-octyl group, and a n-hexadecyl group.
The term “alkylthio group having from 1 to 6 carbon atoms” refers to a linear or branched alkylthio group containing 1 to 6 carbon atoms. Examples include a methylthio group, an ethylthio group, a propylthio group, an isopropylthio group, a butylthio group, an isobutylthio group, a pentylthio group, and a hexylthio group.
The term “alkylsulfonyl group having from 1 to 6 carbon atoms” refers to a linear or branched alkylsulfonyl group containing 1 to 6 carbon atoms. Examples include a methanesulfonyl group, an ethanesulfonyl group, a propane-2-sulfonyl group, and a hexanesulfonyl group.
The term “alkoxycarbonyl group having from 2 to 10 carbon atoms” refers to a linear or branched alkoxycarbonyl group containing 2 to 10 carbon atoms. Examples include alkanoyl group having from 2 to 7 carbon atoms such as a methoxycarbonyl group, an ethoxycarbonyl group and a t-butoxycarbonyl group, as well as an octyloxycarbonyl group.
The term “alkanoyl group having from 2 to 7 carbon atoms” refers to a linear or branched alkanoyl group containing 2 to 7 carbon atoms. Examples include an acetyl group, a propanoyl group, a butanoyl group, and a hexanoyl group.
The term “alkanoyl group having from 1 to 6 carbon atoms” refers to a linear or branched alkanoyl group containing 1 to 6 carbon atoms. Examples include a formyl group, an acetyl group, a propanoyl group, and a butanoyl group.
The phrase “amino group optionally substituted with one or two alkyl groups each having from 1 to 6 carbon atoms” is intended to include, for example, an amino group, a methylamino group, an ethylamino group, an isopropylamino group, a hexylamino group, a dimethylamino group, a diethylamino group, a diisopropylamino group, and a dihexylamino group.
The phrase “aminosulfonyl group optionally substituted with one or two alkyl groups each having from 1 to 6 carbon atoms” is intended to include, for example, a sulfamoyl group, a dimethylaminosulfonyl group, and a diethylaminosulfonyl group.
The phrase “carbamoyl group optionally substituted with an alkyl group(s) having from 1 to 4 carbon atoms” is intended to include a carbamoyl group, a methylcarbamoyl group, an ethylcarbamoyl group, and a propylcarbamoyl group.
The phrase “piperazino group which may be substituted” or “optionally substituted piperazino group” refers to a piperazino group which may be substituted (preferably on its nitrogen atom) with a substituent(s) selected from the group consisting of an alkyl group having 1-6 carbon atoms (wherein said alkyl group may be substituted with an amino group which may be substituted with one or two alkyl groups each having 1-6 carbon atoms, a morpholino group, a hydroxyl group, or an alkoxy group having 1-6 carbon atoms), a formyl group, an alkanoyl group having 2-7 carbon atoms, a carbamoyl group which may be substituted with one or two alkyl groups each having 1-4 carbon atoms, an aminosulfonyl group optionally substituted with one or two alkyl groups each having 1-6 carbon atoms, and an alkylsulfonyl group having 1-6 carbon atoms. Specific examples include a piperazino group, a methylpiperazino group, an isopropylpiperazino group, a dimethylaminoethylpiperazino group, and an acetylpiperazino group.
The term “monocylic saturated hydrocarbon group having from 2 to 7 carbon atoms and having a nitrogen atom(s) as a ring atom(s)” means a 3- to 9-membered monocylic saturated hydrocarbon group containing one or two nitrogen atoms as ring-forming atoms and substituted at a ring carbon atom. Examples of the monocylic saturated hydrocarbon group include aziridinyl groups, azetidinyl groups, pyrrolidinyl groups, and piperidinyl groups (e.g., 4-piperidinyl groups).
The term “nitrogen-containing monocyclic unsaturated hydrocarbon group” refers to a 5- or 6-membered unsaturated ring containing 1 to 3 nitrogen atoms as its ring members. Examples include a pyrrolyl group (e.g., a pyrrol-1-yl group), an imidazol-1-yl group (e.g., an imidazolyl group), a pyrazolyl group, a triazol-4-yl group (e.g., a [1,2,4]triazol-4-yl group), and a pyridyl group.
The 3- to 5-membered saturated hydrocarbon ring formed by RA and RB together with the nitrogen atom to which RA and RB are attached is intended to include an aziridinyl group, an azetidinyl group, and a pyrrolidinyl group.
The 3- to 8-membered saturated hydrocarbon ring formed by R7 and R8 (or RC and RD) together with the nitrogen atom to which R7 and R8 (or RC and RD) are attached is intended to include an aziridinyl group, an azetidinyl group, a pyrrolidinyl group, and a piperidinyl group.
The term “aryl group” as used herein refers to an aromatic hydrocarbon group, a partially saturated aromatic hydrocarbon group, an aromatic heterocyclic group, or a partially saturated aromatic heterocyclic ring. The aromatic hydrocarbon group refers to, for example, an aromatic hydrocarbon group containing 6-14 carbon atoms, including a phenyl group, a naphthyl group, and an anthryl group.
The partially saturated aromatic hydrocarbon group refers to a group obtained by partial saturation of a polycyclic aromatic hydrocarbon group having 6-14 carbon atoms. Examples include a tetrahydronaphthyl group and an indanyl group.
The aromatic heterocyclic group refers to a monocylic or polycyclic aromatic heterocyclic group containing 2-13 carbon atoms and having 1-6 hetero atoms (e.g., oxygen, sulfur and/or nitrogen atoms). Examples include a thienyl group, a furanyl group, a pyrrolyl group, an isothiazolyl group, an isoxazolyl group, a pyrazolyl group, a thiazolyl group, an oxazolyl group, an imidazolyl group, a pyridyl group, a pyridazinyl group, a pyrimidinyl group, a pyrazinyl group, a benzothienyl group, a benzofuranyl group, an indolyl group, a benzothiazolyl group, a benzoxazolyl group, a benzimidazolyl group, a quinolinyl group, an isoquinolinyl group, a benzoxadiazolyl group, a benzothiadiazolyl group, and a pyrazolopyrimidinyl group (e.g., a 5,7-dimethyl-pyrazolo[1,5-a]pyrimidin-2-yl group).
The partially saturated aromatic heterocyclic ring refers to a heterocyclic ring obtained by partial saturation of a polycyclic aromatic heterocyclic group. Such a heterocyclic ring may be substituted with an oxo group. Examples include a dihydroquinolinonyl group:
a dihydrobenzofuranyl group, a dihydrobenzodioxinyl group, a dihydrobenzodioxepinyl group, a benzodioxolyl group, a dihydrobenzoxazolyl group, and a dihydrobenzoxazinyl group,
In a case where such an aryl group is substituted, substituents for the aryl group include those listed below and the aryl group can be substituted with 1 to 5 of these substituents:
a halogen atom, a cyano group, a nitro group, a sulfamoyl group, a hydroxyl group, a carboxyl group, an alkyl group having 1-6 carbon atoms, a trifluoromethyl group, a methoxycarbonylethyl group, an alkoxy group having 1-6 carbon atoms (the alkoxy group is optionally substituted with a phenyl group, an alkylamino group having 1-6 carbon atoms, a dialkylamino group having 2-12 carbon atoms, or a morpholino group), a trifluoromethoxy group, a difluoromethoxy group, a cyanoethoxy group,
an alkenyl group having 2-8 carbon atoms, an alkynyl group having 2-8 carbon atoms,
a cycloalkyl group having 3-8 carbon atoms, an alkanoyl group having 2-7 carbon atoms, a trifluoroacetyl group, an alkoxycarbonyl group having 2-10 carbon atoms,
a phenyl group (the phenyl group is optionally substituted with an alkanoyl group having 2-7 carbon atoms or an alkoxy group having 1-6 carbon atoms),
a phenoxy group optionally substituted with an alkoxy group having 1-6 carbon atoms,
a pyrazolyl group, a 1-methyl-5-trifluoromethyl-1H-pyrazol-3-yl group, a methylpyrimidinyl group, a 2-methylsulfanyl-pyrimidin-4-yl groups, an oxazolyl group (e.g., oxazol-5-yl group), an isooxazol-5-yl group, a 5-trifluoromethyl-isooxazol-3-yl group, a pyridyloxy group (e.g., 4-pyridyloxy group), a pyridinecarbonyl group, a benzoyl group, a pyrrolyl group (e.g., pyrrol-1-yl group), an imidazolyl group (e.g., imidazol-1-yl group), a thiazolyl group, a [1,2,3]thiadiazol-4-yl group, a triazolyl group (e.g., [1,2,4]triazol-4-yl group), an alkylthio group having 1-6 carbon atoms (e.g., methylthio group), an alkylsulfonyl group having 1-6 carbon atoms (e.g., methanesulfonyl group), a benzenesulfonyl group, a pyrrolidinesulfonyl group, a morpholinylsulfonyl group, a 4-piperidinyl group optionally substituted with an alkyl group having 1-6 carbon atoms, a morpholino group optionally substituted with an alkyl group having 1-6 carbon atoms, a piperazino group substituted with an alkyl group having 1-6 carbon atoms or an alkyl group having 1-6 carbon atoms and substituted with a dimethylamino group, or a group represented by Formula —NR7R8, where R7 and R8 each represent a hydrogen atom, an alkyl group having 1-6 carbon atoms (the alkyl group is optionally substituted with an alkoxy group having 1-6 carbon atoms or a dimethylamino group), an alkanoyl group having 1-6 carbon atoms, a carbamoyl group, a carbamoyl group substituted with an alkyl group(s) having 1-4 carbon atoms, a morpholinocarbonyl group, a dimethylaminosulfonyl group, or an alkylsulfonyl group having 1-6 carbon atoms, or R7 and R8 optionally form, together with the nitrogen atom to which R7 and R8 are attached, to form a 3- to 8-membered saturated hydrocarbon ring, which ring is optionally substituted with a dimethylenedioxy group, an oxo group, or a hydroxyl group, (e.g., acetamide groups, dimethylamino groups, methylureido groups, butylureido groups, trimethylureido groups, morpholinylcarbonylamino), a methoxyethylureido group, a pyridylethoxycarbonylamino group.
The term “pharmaceutically acceptable salt” refers to a salt with an alkali metal, an alkaline earth metal, ammonium or an alkylammonium, or a salt with a mineral acid or an organic acid. Examples include a sodium salt, a potassium salt, a calcium salt, an ammonium salt, an aluminum salt, a triethylammonium salt, an acetate salt, a propionate salt, a butyrate salt, a formate salt, a trifluoroacetate salt, a maleate salt, a tartrate salt, a citrate salt, a stearate salt, a succinate salt, an ethylsuccinate salt, a lactobionate salt, a gluconate salt, a glucoheptate salt, a benzoate salt, a methanesulfonate salt, an ethanesulfonate salt, a 2-hydroxyethanesulfonate salt, a benzenesulfonate salt, a paratoluenesulfonate salt, a lauryl sulfate salt, a malate salt, an aspartate salt, a glutamate salt, an adipate salt, a salt with cysteine, a salt with N-acetylcysteine, a hydrochloride salt, a hydrobromide salt, a phosphate salt, a sulfate salt, a hydroiodide salt, a nicotinate salt, an oxalate salt, a picrate salt, a thiocyanate salt, an undecanoate salt, a salt with an acrylate polymer, and a salt with a carboxyvinyl polymer.
The compounds of the present invention may have stereoisomers including optical isomers, diastereoisomers and geometrical isomers. All of these stereoisomers and mixtures thereof also fall within the scope of the present invention. Some of the compounds and intermediates of the present invention may also exist, e.g., as keto-enol tautomers.
As shown in Test Example below, the compounds of the present invention show strong activity in an action of inhibiting binding between S1P and its receptor, Edg-1 (S1P1). Thus, the compounds are expected to have preventive or therapeutic effects on autoimmune diseases, such as Crohn disease, hypersensitivity colitis, Sjogren's syndrome, multiple sclerosis, and systemic lupus erythematosus, and diseases such as rheumatoid arthritis, asthma, atopic dermatitis, organ transplant rejection, cancer, retinopathy, psoriasis, osteoarthritis, and age-related macular degeneration.
Preferred embodiments of the compound of the present invention are described as follows.
A preferred example of A is an oxygen atom or —NR6— (it is preferable that R6 be hydrogen). A more preferred example of A is an oxygen atom.
A preferred example of R1 is an alkyl group having 1-6 carbon atoms which may be substituted with a halogen atom(s), or a benzyl group which may be substituted with a substituent(s) selected from the group consisting of a halogen atom and an alkyl group having 1-6 carbon atoms. More preferred is a methyl group, an ethyl group, or a benzyl group which may be substituted with a halogen atom(s), and even more preferred is a methyl group.
A preferred example of R1A is a hydrogen atom.
Preferred examples of R2 are an ethyl group and a cyclopropyl group.
A preferred example of R4 is a hydrogen atom.
In a preferred embodiment, R3 is: a optionally substituted phenyl group; a 2-naphthyl group (the naphthyl group is optionally substituted with a substituent(s) selected from the group consisting of a halogen atom and an alkyl group having 1-6 carbon atoms); a 3-pyrazolyl group (the pyrazolyl group is optionally substituted with a substituent(s) selected from the group consisting of an alkyl group having 1-6 carbon atoms (preferably a methyl group), a trifluoromethyl group, and a halogen atom); or a 5-benzothiazolyl group, a 5-benzothiadiazolyl group, a 7-dihydroquinolinonyl group, a 7-isoquinolinyl group, a 7-quinolinyl group, a 3-pyridyl group, or an indolyl group (preferably a 6-indolyl group), each optionally substituted with an alkyl group(s) having 1-6 carbon atoms (preferably a methyl group).
The “optionally substituted phenyl group” in the preferred embodiment of R3 includes unsubstituted phenyl groups and substituted phenyl groups (A)-(C) below:
(A) a phenyl group substituted at 4 position with a substituent selected from the group consisting of an alkyl group having 1-6 carbon atoms, a cycloalkyl group having 3-8 carbon atoms, an alkoxy group having 1-6 carbon atoms (the alkoxy group is optionally substituted with a substituent(s) selected from the group consisting of an amino group substituted with two alkyl groups each having 1-4 carbon atoms, a morpholino group, and a phenyl group), a halogen atom, a trifluoromethoxy group, a phenoxy group, a phenyl group, a 1-pyrrolyl group, and —NRARB (RA and RB are alkyl groups each having 1-6 carbon atoms, or RA and RB optionally form, together with the nitrogen atom to which RA and RB are attached, a 3- to 5-membered saturated hydrocarbon ring), which phenyl group substituted at 4 position is optionally further substituted at 3 position with a substituent selected from the group consisting of an alkyl group having 1-6 carbon atoms, a halogen atom, and an alkoxy group having 1-6 carbon atoms;
(B) a phenyl group substituted at 3 position with a substituent selected from the group consisting of a hydroxyl group, an alkyl group having 1-6 carbon atoms, and an alkoxy group having 1-6 carbon atoms (the alkoxy group is optionally substituted with a substituent(s) selected from the group consisting of an amino group substituted with two alkyl groups each having 1-4 carbon atoms, a morpholino group, and a phenyl group), which phenyl group substituted at 3 position is optionally further substituted with one or two alkyl groups each having 1-6 carbon atoms, or is optionally further substituted at 4 position with a halogen atom; and
(C) a phenyl group substituted at 3 position with a substituent selected from the group consisting of nitrogen-containing groups (i)-(v) below and, in some cases, optionally further substituted at 4 position with a halogen atom, which nitrogen-containing groups preferably have a tertiary nitrogen and are attached to the phenyl group at a nitrogen atom:
It is preferable that Formula —NR7R8 in item (v) above be —NRCRD as defined below.
RC and RD each represent a hydrogen atom, an alkyl group having 1-6 carbon atoms (the alkyl group is optionally substituted with an amino group optionally substituted with one or two alkyl groups each having 1-4 carbon atoms, a hydroxyl group, or an alkoxy group having 1-4 carbon atoms), a formyl group, an acetyl group, an aminocarbonyl group, a dimethylaminosulfonyl group, or a methylsulfonyl group, or RC and RD optionally form, together with the nitrogen atom to which RC and RD are attached, a 3- to 8-membered saturated hydrocarbon ring, which ring is optionally substituted with a substituent(s) selected from the group consisting of a dimethylenedioxy group, an oxo group, and a hydroxyl group.
In an especially preferred embodiment, R3 is a phenyl group substituted at 4 position with a fluorine atom or a chlorine atom, a 6-indolyl group, and nitrogen-containing groups (i), (iv), and (v) shown in item (C) above, which phenyl group substituted with a substituent selected from the above group is optionally further substituted at 4 position with a halogen atom.
In a preferred embodiment, R5 is: an alkyl group having 1-10 carbon atoms (preferably 1-6 carbon atoms) and substituted with a cycloalkyl group having 3-8 carbon atoms; an alkyl group having 1-10 carbon atoms (preferably 1-6 carbon atoms) and substituted with a naphthyl group; an alkenyl group having 2-8 carbon atoms (preferably 2-6 carbon atoms) and substituted with a phenyl group; a phenyl group or a naphthyl group (preferably 2-naphthyl group) each optionally substituted with 1-5 substituents selected from the group consisting of an alkyl group having 1-6 carbon atoms, a halogen atom, an alkoxy group having 1-6 carbon atoms, a trifluoromethoxy group, a difluoromethoxy group, a trifluoromethyl group, an alkenyl group having 1-6 carbon atoms, an alkylsulfonyl group having 1-6 carbon atoms, an alkanoyl group having 2-7 carbon atoms, an alkoxycarbonyl group having 2-7 carbon atoms, and a cyano group; a pyrrolyl group optionally substituted with a substituent(s) selected from the group consisting of an alkyl group having 1-6 carbon atoms (preferably a methyl group) and a methoxycarbonyl group; a furanyl group optionally substituted with a substituent(s) selected from the group consisting of an alkyl group having 1-6 carbon atoms (preferably a methyl group), a trifluoromethyl group, and a halogen atom; a thienyl group optionally substituted with a substituent(s) selected from the group consisting of an alkyl group having 1-6 carbon atoms (preferably a methyl group), a trifluoromethyl group, a thiadiazolyl group, an oxazolyl group, and a halogen atom; or a benzothienyl group (preferably a 2-benzothienyl group), a phenyl group condensed with a 5- to 7-membered saturated hydrocarbon ring which may contain one or two oxygen atoms as ring-forming atoms (e.g., a dihydrobenzodioxepinyl group, a benzodioxolyl group, a dihydrobenzodioxynyl group, a dihydrobenzofuranyl group, a tetrahydronaphthyl group, an indanyl group), a thiadiazolyl group, a benzoxadiazolyl group, or a benzothiadiazolyl group (preferably 5-benzothiadiazolyl groups), each optionally substituted with a substituent(s) selected from the group consisting of an alkyl group having 1-6 carbon atoms (preferably a methyl group) and a halogen atom.
In a preferred embodiment of R5, examples of the “phenyl group which is optionally substituted” include an unsubstituted phenyl group, a phenyl group substituted with 1-5 substituents selected from the group consisting of an alkyl group having 1-6 carbon atoms (preferably a methyl group), an alkoxy group having 1-6 carbon atoms (preferably a methoxy group), and a halogen atom, and a phenyl group substituted at either 3 or 4 position or both and substituted with 1-3 substituents selected from the group consisting of an alkyl group having 1-6 carbon atoms, a halogen atom, an alkoxy group having 1-6 carbon atoms (preferably a methoxy group), a trifluoromethoxy group, a difluoromethoxy group, a trifluoromethyl group, an alkenyl group having 1-6 carbon atoms, an alkylsulfonyl group having 1-6 carbon atoms (preferably a methylsulfonyl group), a methoxycarbonyl group, an acetyl group, and a cyano group, preferably a halogen atom, a methyl group, and a methoxy group, and more preferably a halogen atom.
In a preferred embodiment of R5, an example of the “naphthyl group which is optionally substituted” is a naphthyl group optionally substituted with a substituent(s) (preferably 1-3 substituents) selected from the group consisting of a halogen atom, an alkyl group having 1-6 carbon atoms (preferably a methyl group), a cyano group, and an alkylsulfonyl group having 1-6 carbon atoms (preferably a methylsulfonyl group). More preferably, it is a naphthyl group optionally substituted with a substituent(s) selected from the group consisting of a halogen atom, an alkyl group having 1-6 carbon atoms (preferably a methyl group), and a cyano group. Examples in a case of a 2-naphthyl group include an unsubstituted 2-naphthyl group and a 2-naphthyl group substituted with a substituent(s) selected from the group consisting of an alkyl group having 1-6 carbon atoms (substituted at any position, preferably at 5, 7 and/or 8 position) and other substituents (substituted at 5, 7 and/or 8 position). Examples in a case of a 1-naphthyl group include an unsubstituted 1-naphthyl group and a 1-naphthyl group substituted with a substituent(s) selected from the group consisting of an alkyl group having 1-6 carbon atoms (substituted at any position) and other substituents, preferably a halogen atom (substituted preferably at 4 position).
In an especially preferred embodiment, R5 is a phenyl group substituted at 3 and 4 positions with a halogen atom, an unsubstituted 2-naphthyl group, and a 2-naphthyl group substituted at 5, 7 and/or 8 position with a substituent(s) selected from the group consisting of a halogen atom, an alkyl group having 1-6 carbon atoms (preferably a methyl group), and a cyano group.
The following are combinations of R3 and R5 that are especially preferred. In a case in which R3 is a phenyl group substituted at 4 position with a fluorine atom or a chlorine atom, R5 is: an alkyl group having 1-10 carbon atoms (preferably 1-6 carbon atoms) and substituted with a naphthyl group; an alkenyl group having 2-8 carbon atoms (preferably 2-6 carbon atoms) and substituted with a phenyl group; a substituted phenyl group (e.g., a phenyl group substituted with 1-5 methyl groups, a phenyl group substituted at either 3 or 4 position or both and substituted with 1-3 substituents selected from the group consisting of an alkyl group having 1-6 a carbon atom (preferably a methyl group, an ethyl group, a propyl group), a halogen atom, a methoxy group, a trifluoromethoxy group, a difluoromethoxy group, a trifluoromethyl group, an alkenyl group having 1-6 carbon atoms (preferably a vinyl group), a methoxycarbonyl group, an acetyl group, and a cyano group; a benzothienyl group; a naphthyl group optionally substituted with a substituent(s) selected from the group consisting of a halogen atom, an alkyl group having 1-6 carbon atoms (preferably a methyl group), a cyano group, and an alkylsulfonyl group having 1-6 carbon atoms (preferably a methylsulfonyl group); a pyrrolyl group optionally substituted with a substituent(s) selected from the group consisting of a methyl group and a methoxycarbonyl group; a thienyl group substituted with an alkyl group(s) having 1-6 carbon atoms (preferably a methyl group); a benzodioxolyl group; a dihydrobenzodioxynyl group; a dihydrobenzofuranyl group; a tetrahydronaphthyl group; an indanyl group; or a benzothiadiazolyl group (preferably a 5-benzothiadiazolyl group).
In a case in which R3 is a 6-indolyl group, R5 is: an alkyl group having 1-10 carbon atoms (preferably 1-6 carbon atoms) and substituted with a naphthyl group; an alkenyl group having 2-8 carbon atoms (preferably 2-6 carbon atoms) and substituted with a phenyl group; a phenyl group which is optionally substituted (e.g., an unsubstituted phenyl group, a phenyl group substituted with 1-5 methyl groups, a phenyl group substituted at either 3 or 4 position or both and substituted with 1-3 substituents selected from the group consisting of an alkyl group having 1-6 carbon atoms (preferably a methyl group, an ethyl group, a propyl group), a halogen atom, a methoxy group, a trifluoromethoxy group, a difluoromethoxy group, a trifluoromethyl group, an alkenyl group having 1-6 carbon atoms (preferably a vinyl group), a methoxycarbonyl group, an acetyl group, and a cyano group); a benzothienyl group; a naphthyl group optionally substituted with a substituent(s) selected from the group consisting of a halogen atom, an alkyl group having 1-6 carbon atoms (preferably a methyl group), a cyano group, and an alkylsulfonyl group having 1-6 carbon atoms (preferably a methylsulfonyl group); a pyrrolyl group optionally substituted with a substituent(s) selected from the group consisting of an alkyl group having 1-6 carbon atoms (preferably a methyl group) and a methoxycarbonyl group: or a benzodioxolyl group, a dihydrobenzodioxynyl group, a dihydrobenzofuranyl group, a tetrahydronaphtyl group, an indanyl group, or a benzothiadiazolyl group (preferably, 5-benzothiadiazolyl group), each optionally substituted with a substituent(s) selected from the group consisting of an alkyl group having 1-6 carbon atoms (preferably a methyl group) and a halogen atom.
In a case in which R3 is of the embodiment shown in item (C) above, R5 is: an alkyl group having 1-6 carbon atoms and substituted with a cycloalkyl group having 3-8 carbon atoms: an alkyl group having 1-10 carbon atoms (preferably 1-6 carbon atoms) and substituted with a naphthyl group; an alkenyl group having 2-8 carbon atoms (preferably 2-6 carbon atoms) and substituted with a phenyl group; a optionally substituted phenyl group (e.g., an unsubstituted phenyl group, a phenyl group substituted with 1-5 substituents selected from the group consisting of an alkyl group having 1-6 carbon atoms (preferably a methyl group) and a halogen atom, a phenyl group substituted at 3 or 4 position or both and substituted with 1-3 substituents selected from the group consisting of an alkyl group having 1-6 carbon atoms, a halogen atom, a methoxy group, a trifluoromethoxy group, a difluoromethoxy group, a trifluoromethyl group, an alkenyl group having 1-6 carbon atoms, an alkylsulfonyl group having 1-6 carbon atoms (preferably a methylsulfonyl group), a methoxycarbonyl group, an acetyl group, and a cyano group; a naphthyl group optionally substituted with a substituent(s) selected from the group consisting of a halogen atom, an alkyl group having 1-6 carbon atoms (preferably a methyl group), a cyano group, and an alkylsulfonyl group having 1-6 carbon atoms (preferably a methylsulfonyl group); a pyrrolyl group optionally substituted with a substituent(s) selected from the group consisting of an alkyl group having 1-6 carbon atoms (preferably a methyl group) and a methoxycarbonyl group; a thienyl group optionally substituted with a substituent(s) selected from the group consisting of an alkyl group having 1-6 carbon atoms (preferably a methyl group), a trifluoromethyl group, a thiadiazolyl group, an oxazolyl group, and a halogen atom; a furanyl group optionally substituted with a substituent(s) selected from the group consisting of an alkyl group having 1-6 carbon atoms (preferably a methyl group), a trifluoromethyl group, and a halogen atom; or a benzothienyl group, a benzodioxolyl group, a dihydrobenzodioxynyl group, a dihydrobenzofuranyl group, a tetrahydronaphthyl group, an indanyl group, a thiadiazolyl group (preferably a 5-thiadiazolyl group), a benzoxadiazolyl group, or a benzothiadiazolyl group (preferably a 5-benzothiadiazolyl group), each optionally substituted with a substituent(s) selected from the group consisting of an alkyl group having 1-6 carbon atoms (preferably a methyl group) and a halogen atom.
A preferred optically-active compound of the present compound having R1A being a hydrogen atom has the structure below.
The compound of the present invention can be synthesized by, for instance, the method described below.
(where R1, R1A, R2, R3, and R5 are as defined above, R′ represents an alkyl group having 1-6 carbon atoms, R″ represents a protecting group for an amino group, which protecting group is stable under a basic condition (e.g., a t-butoxycarbonyl group, a benzyloxycarbonyl group), L represents a leaving group (e.g., a halogen atom, such as a chlorine atom, a bromine atom, and an iodine atom, an alkylsulfonyloxy group, such as an a methanesulfonyloxy group and a p-toluenesulfonyloxy group, an arylsulfonyloxy group, a 2-oxo-1-oxazolyl group), and A1 represents an oxygen atom, a sulfur atom, or a group represented by —NR6—, where R6 represents a hydrogen atom or an alkyl group having 1-6 carbon atoms.)
In the present invention, a compound having A being an oxygen atom, a sulfur atom, or a group represented by —NR6— can be synthesized by, for instance, the method shown in Scheme 1.
The compound represented by Formula (b) can be obtained by allowing the compound represented by Formula (a) to react with hydrazine in a solvent or in the absence of a solvent. The amount of the hydrazine used is generally 1-30 equivalent weight with respect to Compound (a), preferably 5-30 equivalent weight. A solvent to be used when it is necessary is not particularly limited, as long as it is inert. Examples of the solvent to be used include alcohols such as methanol and ethanol. The reaction temperature is generally a room temperature to a solvent reflux temperature. The reaction time is generally 12-24 hours, but it depends on the reaction temperature and starting compounds.
The compound represented by Formula (d) can be obtained by allowing the compound represented by Formula (b) to react with the compound represented by Formula (c) in a solvent or in the absence of a solvent. The amount of the compound represented by Formula (c) to be used is generally 1-3 equivalent weight with respect to the compound represented by Formula (b), preferably 1.1-1.5 equivalent weight. A solvent to be used when it is necessary is not particularly limited, as long as it is inert. For instance, alcohols, such as methanol and ethanol, and halogenated hydrocarbons, such as dichloromethane and chloroform, are preferably used. The reaction temperature is generally a room temperature to a solvent reflux temperature. The reaction time is generally 30 minutes to 24 hours, but it depends on the reaction temperature and starting compounds.
The compound represented by Formula (e) can be obtained by allowing the compound of Formula (d) to react with a base in a solvent or in the absence of a solvent to cyclize. The base to be used includes alkali metal hydroxides such as NaOH and KOH, and alkali metal salts such as NaHCO3 and K2CO3. The amount of the base used is 1-10 equivalent weight with respect to the compound represented by Formula (d), preferably 1.1-1.5 equivalent weight. If a solvent is necessary, the following can be used as the solvent: water, alcohols such as methanol and ethanol, ethers such as dioxane and tetrahydrofuran (THF), and mixed solvents thereof. The reaction temperature is generally a room temperature to a solvent reflux temperature. The reaction time is generally a period of 30 minutes to 24 hours, but it depends on the reaction temperature and starting compounds.
The compound represented by Formula (g) can be obtained by allowing, in a solvent or in the absence of a solvent, the compound represented by Formula (e) to react with the compound represented by Formula (f) in the presence of a base. The amount of the compound represented by Formula (f) to be used is generally 1-5 equivalent weight, preferably 1.1-1.5 equivalent weight, with respect to the compound represented by Formula (e). The base to be used includes alkali metal hydroxides, such as NaOH and KOH, alkali metal salts, such as NaHCO3 and K2CO3, and amines, such as triethylamine, diisopropylethylamine, and diisopropylamine. The amount of the base used is 1-10 equivalent weight with respect to the compound represented by Formula (e), preferably 1.0-3.0 equivalent weight. The reaction temperature is 0° C. to a solvent reflux temperature, preferably 0° C. to a room temperature. A solvent to be used when it is necessary is not particularly limited, as long as it is inert. Examples of the solvent to be used include water, ethers such as dioxane and THF, dimethylformamide (DMF), N,N′-dimethylacetamide (DMA), N,N′-dimethylpropyleneurea (DMPU), hexamethylphosphoramide (HMPA), and mixed solvents thereof. The reaction time is generally a period of 30 minutes to 24 hours, but it depends on the reaction temperature and starting compounds.
The compound represented by Formula (h) can be obtained by allowing the compound represented by Formula (g) to react with an oxidant in a solvent. Examples of the solvent to be used include organic peroxyacids such as m-chloroperbenzoic acid, magnesium monoperphthalate hexahydrate, peroxyacetic acid, and peroxyformic acid, inorganic or organic peroxides such as hydrogen peroxide, hydrogen peroxide urea adduct/phthalic anhydride, tert-butylhydroperoxide, and cumenehydroperoxide, sodium periodate, Oxone (registered trademark), N-bromosuccinimide, N-chlorosuccinimide, chloramine-T, hypochlorite tert-butyl, iodobenzene diacetate, and bromine-1,4-diazabicyclo[2,2,2]octane addition complex. The amount of the oxidant used is 2-10 equivalent weight with respect to the compound represented by Formula (g), preferably 2-3 equivalent weight. A solvent to be used when it is necessary is not particularly limited, as long as it is inert. Examples of the solvent to be used include halogenated hydrocarbons such as methylene chloride and chloroform. The reaction temperature is 0° C. to a solvent reflux temperature, preferably 0° C.-40° C. The reaction time is generally a period of 30 minutes to 24 hours, but it depends on the reaction temperature and starting compound.
The compound represented by Formula (i) or a salt of the compound can be obtained by subjecting the compound represented by Formula (h) to deprotection of an amino group in a solvent under a conventional condition, e.g., allowing it to react with an acid. Examples of the acid used include inorganic acids (e.g., hydrochloric acid, hydrobromic acid, hydroiodic acid, sulfuric acid, nitric acid) and organic acids (e.g., trifluoroacetic acid, p-toluenesulfonic acid, methanesulfonic acid). The amount of the acid used is 1-50 equivalent weight with respect to the compound represented by Formula (h). The reaction temperature is 0° C. to a solvent ref lux temperature, preferably a room temperature to 40° C. A solvent to be used when it is necessary is not particularly limited, as long as it is inert. Examples of the solvent to be used include halogenated hydrocarbons such as methylene chloride and chloroform. The reaction time is generally a period of 30 minutes to 24 hours, but it depends on the reaction temperature and starting compound.
The compound represented by Formula (k) or a pharmaceutically acceptable salt of the compound can be obtained by allowing, in a solvent or in the absence of a solvent, the compound represented by Formula (i) to react with the compound represented by Formula (j) (where A1 represents an oxygen atom, a sulfur atom, or a group represented by Formula —NR6—, and R3 is as defined above) in the presence of a base and, when necessary, forming a salt. The amount of the compound of Formula (j) to be used is generally 1-5 equivalent weight with respect to the compound represented by Formula (i), preferably 1-3 equivalent weight. Examples of the base used include alkali metal salts, such as sodium carbonate, potassium carbonate, cesium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, sodium hydroxide, dimsyl sodium, sodium hydride, sodium amide, tert-butoxypotassium, and tert-butoxysodium, amines, such as triethylamine, diisopropylamine, pyrrolidine, and piperidine, sodium acetate, and potassium acetate. The amount of the base used is generally 1-10 equivalent weight with respect to the compound represented by Formula (i), preferably 1-3 equivalent weight. The reaction temperature is 0° C. to a solvent reflux temperature, and it can be carried out under ordinary pressure, increased pressure, microwave irradiation, or the like. The reaction solvent to be used includes ethers such as dioxane and THF, DMF, DMA, DMPU, HMPA, or the like, or mixed solvents thereof. The reaction time is generally a period of 1-12 hours, but it depends on the reaction temperature and starting compound.
The compound represented by Formula (m) or a pharmaceutically acceptable salt of the compound can be obtained by allowing, in a solvent or in the absence of a solvent, the compound represented by Formula (k) to react with the compound represented by Formula (l) in the presence of a base and, when necessary, forming a salt. The amount of the compound represented by Formula (l) used is 1-5 equivalent weight with respect to the compound represented by Formula (k), preferably 1-1.2 equivalent weight. The base to be used includes alkali metal hydroxides, such as NaOH and KOH, alkali metal salts, such as NaHCO3 and K2CO3, or amines, such as triethylamine, diisopropylethylamine, and diisopropylamine. The amount of the base used is 1-10 equivalent weight with respect to the compound represented by Formula (k), preferably 1.0-3.0 equivalent weight. The reaction temperature is 0° C. to a solvent ref lux temperature, preferably 0° C. to a room temperature. A solvent to be used when it is necessary is not particularly limited, as long as it is inert. Examples of the solvent to be used include halogenated hydrocarbons such as methylene chloride and chloroform, ethers such as dioxane and THF, and mixed solvents thereof. The reaction time is generally a period of 30 minutes to 24 hours, but it depends on the reaction temperature and starting compound.
(where R1, R1A, R2, R3, R4, R5, R′, R″, A, and L are as defined above, and R41 is the same as R4 excluding the hydrogen atom).
In the present invention, a compound having A represented by Formula —SO— or Formula —SO2— can be synthesized by the method shown in Scheme 2.
The compound represented by Formula (m2), the compound represented by Formula (m3), or pharmaceutically acceptable salts of the compounds can be obtained by allowing, among the compounds obtained in Scheme 1 and represented by Formula (m), the compound represented by Formula (m1) having A1 being a sulfur atom to react with an oxidant and, when necessary, forming a salt. Examples of the oxidant to be used include organic peroxyacids such as m-chloroperbenzoic acid, magnesium monoperphthalate hexahydrate, peroxyacetic acid, and peroxyformic acid, inorganic or organic peroxides such as hydrogen peroxide, hydrogen peroxide urea adduct/phthalic anhydride, tert-butylhydroperoxide, and cumenehydroperoxide, sodium periodate, Oxone (registered trademark), N-bromosuccinimide, N-chlorosuccinimide, chloramine-T, hypochlorite tert-butyl, iodobenzene diacetate, and bromine-1,4-diazabicyclo[2,2,2]octane addition complex. The amount of the oxidant used is 1-10 equivalent weight with respect to the compound represented by Formula (m1), preferably 1-3 equivalent weight. A solvent to be used when it is necessary is not particularly limited, as long as it is inert. Examples of the solvent to be used include halogenated hydrocarbons such as methylene chloride and chloroform. The reaction temperature is −78° C. to a solvent ref lux temperature, preferably 0°-40° C. The reaction time is generally a period of 30 minutes to 24 hours, but it depends on the reaction temperature and starting compound.
In the present invention, a compound having A represented by —CH2— can be synthesized by the method shown in Scheme 3.
The compound represented by Formula (o) can be obtained by allowing the compound represented by Formula (a) to react with the compound represented by Formula (n) (R2 is as defined above) in a solvent or in the absence of a solvent. The amount of the compound represented by Formula (n) to be used is 1-10 equivalent weight with respect to the compound represented by Formula (a), preferably 1-1.2 equivalent weight. A solvent to be used when it is necessary is not particularly limited, as long as it is inert. Examples of the solvent to be used include alcohols such as methanol and ethanol. The reaction temperature is generally a room temperature to a solvent reflux temperature, preferably a room temperature to 50° C. The reaction time is generally a period of 12-24 hours, but it depends on the reaction temperature and starting compound.
The compound represented by Formula (p) can be obtained by allowing the compound represented by Formula (o) to react with a Lawesson's reagent in a solvent or in the absence of a solvent. The amount of the Lawesson's reagent used is 1-5 equivalent weight with respect to the compound represented by Formula (o), preferably 1-1.2 equivalent weight. The reaction solvent to be used includes ethers such as dioxane and THF, and mixed solvents thereof. The reaction temperature is a room temperature to a solvent reflux temperature, preferably a room temperature to 50° C. The reaction time is generally 1-12 hours, but it depends on the reaction temperature and starting compounds.
The compound represented by Formula (r) can be obtained by allowing the compound represented by Formula (p) to react with the compound represented by Formula (q) in the presence of a mercury compound. The amount of the compound represented by Formula (q) to be used is 1-10 equivalent weight with respect to the compound represented by Formula (p), preferably 1-1.2 equivalent weight. Examples of the mercury compound include HgCl2 and Hg(OAc)2. The amount of the mercury compound used is 1-10 equivalent weight with respect to the compound represented by Formula (p), preferably 1-1.2 equivalent weight. The solvent to be used includes acetonitrile, THF, dioxane, and the like. The reaction temperature is a room temperature to a solvent reflux temperature, preferably a room temperature to 50° C. The reaction time is generally a period of 12-48 hours, but it depends on the reaction temperature and starting compound.
The compound represented by Formula (k1) or a salt of the compound can be obtained by subjecting the compound represented by Formula (r) to deprotection of an amino group in a solvent under a conventional condition, e.g., allowing it to react with an acid. Examples of the acid include inorganic acids (e.g., hydrochloric acid, hydrobromic acid, hydroiodic acid, sulfuric acid, nitric acid) and organic acids (e.g., trifluoroacetic acid, p-toluenesulfonic acid, methanesulfonic acid). The amount of the acid used is 1-50 equivalent weight with respect to the compound represented by Formula (r). The reaction temperature is 0° C. to a solvent reflux temperature, preferably a room temperature to 40° C. A solvent to be used when it is necessary is not particularly limited, as long as it is inert. Examples of the solvent to be used include halogenated hydrocarbons such as methylene chloride and chloroform. The reaction time is generally a period of 30 minutes to 24 hours, but it depends on the reaction temperature and starting compound.
The compound represented by Formula (m4) or a pharmaceutically acceptable salt of the compound can be obtained by allowing, in a solvent or in the absence of a solvent, the compound represented by Formula (k1) to react with the compound represented by Formula (l) in the presence of a base and, when necessary, forming a salt. The amount of the compound represented by Formula (l) to be used is 1-5 equivalent weight with respect to the compound represented by Formula (k1), preferably 1-1.2 equivalent weight. The base to be used includes alkali metal hydroxides, such as NaOH and KOH, alkali metal salts, such as NaHCO3 and K2CO3, and amines, such as triethylamine, diisopropylethylamine, and diisopropylamine. The amount of the base is 1-10 equivalent weight, preferably 1.0-3.0 equivalent weight. The reaction temperature is 0° C. to a solvent reflux temperature, preferably 0° C. to a room temperature. A solvent to be used when it is necessary is not particularly limited, as long as it is inert. Examples of the solvent to be used include halogenated hydrocarbons such as methylene chloride and chloroform, ethers such as dioxane and THF, and mixed solvents thereof. The reaction time is generally a period of 30 minutes to 24 hours, but it depends on the reaction temperature and starting compound.
The compound represented by Formula (u) or a pharmaceutically acceptable salt of the compound can be obtained by allowing, in a solvent or in the absence of a solvent, the compound represented by Formula (m5) to react with the compound represented by Formula (s) in the presence of a base and, when necessary, forming a salt. The amount of the compound represented by Formula (s) to be used is generally 1-10 equivalent weight with respect to the compound represented by Formula (m5), preferably 1.1-1.5 equivalent weight. The base to be used includes alkali metal hydroxides, such as NaOH and KOH, alkali metal salts, such as NaHCO3 and K2CO3, and amines, such as triethylamine, diisopropylethylamine, and diisopropylamine. The amount of the base used is 1-10 equivalent weight with respect to the compound represented by Formula (m5), preferably 1.0-3.0 equivalent weight. The reaction temperature is 0° C. to a solvent reflux temperature, preferably 0° C. to a room temperature. A solvent to be used when it is necessary is not particularly limited, as long as it is inert. Examples of the solvent to be used include water, ethers such as dioxane and THF, dimethylformamide (DMF), N,N′-dimethylacetamide (DMA), N,N′-dimethylpropyleneurea (DMPU), hexamethylphosphoramide (HMPA), and mixed solvents thereof. The reaction time is generally a period of 30 minutes to 24 hours, but it depends on the reaction temperature and starting compound.
Further, a functional group can be introduced to R3 by carrying out protection, deprotection, functional group transformation in the process described above.
For use as pharmaceutical preparations, the compounds of the present invention may be supplemented with commonly used excipients, extenders, pH regulators, solubilizers and so on, and then formulated using standard techniques into tablets, granules, pills, capsules, powders, solutions, suspensions, injections, etc. The pharmaceutical preparations thus obtained can be administered as oral or parenteral formulations.
The compound of the present invention can be administered to an adult patient at a dose of 1-1000 mg per day in several separated doses. This dosage can be increased or reduced according to a type of a disease, an age, a weight, and a symptom of a patient, or the like.
As the Test Example described below shows, it is found that the compounds of the present invention are strong Edg-1 (S1P1) ligands.
The following describes the present invention in more detail, with reference to Examples and the Test Example.
(1) Hydrazine monohydrate (30 ml) was added to a solution of N-(t-butoxycarbonyl)-D-alanine methyl ester (41.8 g) in methanol (180 ml), and the mixture was stirred at room temperature for 12 hours. The reaction solution was concentrated, and the resulting crude crystal was washed with a mixed solvent of hexane and ethyl acetate (1:1, 300 ml) and then dried to give the titled compound as a colorless powder (32.6 g).
1H NMR (300 MHz, DMDO-d6) δ ppm: 1.14 (d, J=7.2 Hz, 3H), 1.37 (s, 9H), 3.30-4.09 (m, 3H), 6.70-6.90 (m, 1H), 8.96 (br s, 1H)
(2) Ethyl isothiocyanate (14.6 ml) was added to a solution of the compound (30.8 g) of Example 1-(1) in ethanol (152 ml), and the mixture was heated under reflux for two hours. Then, the mixture was cooled to room temperature, and the resulting crystal was filtered. The filtrate was concentrated, and the resulting residue was purified by silica-gel chromatography with a mixed solvent of ethyl acetate and chloroform to give the titled compound as a colorless amorphous substance (43.2 g).
1H NMR (300 MHz, DMSO-d6) δ ppm: 0.98-1.28 (m, 6H), 1.40 (s, 9H), 3.25-3.65 (m, 2H), 3.77-3.95 (m, 1H), 7.20-7.39 (m, 1H), 7.45-7.60 (m, 1H), 9.25 (s, 1H), 10.00 (s, 1H)
(3) One mol/l aqueous sodium hydroxide (218 ml) was added to a mixed solution of the compound (42.1 g) of Example 1-(2) in methanol (120 ml) and dioxane (240 ml), and the mixture was heated under reflux for three hours. The reaction solution was concentrated, and an aqueous hydrochloric acid (2N, 100 ml) was added. The mixture was extracted with a mixed solution of ethyl acetate, chloroform, and methanol (10:10:1, 500 ml). The organic layer was dried over anhydrous magnesium sulfate and evaporated under reduced pressure to remove the solvent. The resulting residue was washed with a mixed solvent of hexane and ethyl acetate (1:1, 300 ml) and then dried to give the titled compound as a white solid (29.22 g).
1H NMR (300 MHz, DMSO-d6) δ ppm: 1.21 (t, J=7.1 Hz, 3H), 1.30-1.50 (m, 3H), 1.39 (s, 9H), 3.82-4.05 (m, 2H), 4.72-4.88 (m, 1H), 7.58 (d, J=8.5 Hz, 1H), 13.60 (br s, 1H)
(4) Diisopropylamine (17.4 ml) and MeI (7.7 ml) were added to a solution of the compound (28.12 g) of Example 1-(3) in THF (200 ml), and the mixture was stirred at room temperature for one hour. Thereafter, the resulting crystal was filtered. The filtrate was concentrated, and the resulting crude crystal was washed with a mixed solvent of hexane and ethyl acetate (3:1, 200 ml) and then dried to give the titled compound as a white powder (29.5 g).
1H NMR (300 MHz, DMSO-d6) δ ppm: 1.21 (t, J=7.0 Hz, 3H), 1.38 (s, 9H), 1.45 (t, J=7.0 Hz, 3H), 2.62 (s, 3H), 3.80-4.00 (m, 2H), 4.85-4.92 (m, 1H), 7.52 (d, J=8.5 Hz, 1H)
(5) With ice cooling, m-chloroperbenzoic acid (43.0 g) was added in four portions to a solution of the compound (21.0 g) of Example 1-(4) in chloroform (293 ml), and the mixture was stirred at room temperature for three hours and thereafter at 40° C. for one hour. Na2S2O3 (12.9 g) and 1 mol/l aqueous sodium hydroxide (300 ml) were added to the reaction solution to separate the organic layer, and the organic layer was washed with saturated aqueous sodium chloride, dried over anhydrous magnesium sulfate, and evaporated under reduced pressure to remove the solvent. The resulting residue was purified by silica-gel flush column chromatography with a mixed solvent of hexane and ethyl acetate, and then recrystallized with hexane and chloroform to give the titled compound as a white powder (17.2 g).
1H NMR (300 MHz, CDCl3) δ ppm: 1.44 (s, 9H), 1.49 (t, J=7.1 Hz, 3H), 1.67 (t, J=6.8 Hz, 3H), 3.53 (s, 3H), 4.25-4.59 (m, 2H), 4.92-5.20 (m, 2H)
(6) Trifluoroacetic acid (121 ml) was added to the compound (100.0 g) obtained in Example 1-(5), and the mixture was stirred at room temperature for two hours. The reaction solution was concentrated under reduced pressure to give the titled compound as a white powder (103.8 g).
1H NMR (300 MHz, DMSO-d6) δ ppm: 1.37 (t, J=7.2 Hz, 3H), 1.59 (d, J=6.8 Hz, 3H), 3.65 (s, 3H), 4.21-4.50 (m, 2H), 4.72-4.90 (m, 1H), 8.69 (br s, 3H)
(7) In a pressure-resistant screw cap test tube, N,N′-dimethylpropyleneurea (DMPU) (5 mL), 4-fluorophenol (1.01 g) and cesium carbonate (2.94 g) were added to the compound (1.00 g) obtained in Example 1-(6), and the mixture was stirred at 200° C. for one hour. The mixture was brought to room temperature, and saturated aqueous sodium chloride was added. The mixture was extracted with ethyl acetate (100 ml×5). The organic layer was dried over anhydrous sodium sulfate, filtered, and evaporated under reduced pressure to remove the solvent. The resulting crude product was purified by column chromatography (NH SiO2, hexane/ethyl acetate=50/50 to 20/80, chloroform/methanol=30/1) to give the titled compound (brown oil compound, 0.586 g).
1H NMR (600 MHz, CDCl3) δ ppm: 1.41 (t, J=7.3 Hz, 3H), 1.58 (d, J=6.4 Hz, 3H), 3.95-4.23 (m, 3H), 6.90-7.15 (m, 2H), 7.30-7.44 (m, 2H)
(8) Triethylamine (0.93 mL, 6.64 mmol) and 3,4-dichlorobenzenesulfonyl chloride (0.45 mL, 2.88 mmol) were added at room temperature to a solution of the compound (0.554 g) of Example 1-(7) in THF (10 mL), and the mixture was stirred at room temperature for 2.5 hours. Then, ethyl acetate was added. The organic layer was washed with 1N aqueous hydrochloric acid and thereafter with saturated aqueous sodium chloride, dried over anhydrous magnesium sulfate, filtered, and evaporated under reduced pressure to remove the solvent. The resulting crude product was purified by column chromatography (acidic OH SiO2, hexane/ethyl acetate=50/50 to 10/90) and then recrystallized (ethyl acetate-hexane) to give 0.447 g of the titled compound (Compound 12) as a colorless powder.
Melting point: 190.0° C. to 192.0° C.
(1) To the compound (4.30 g) obtained in Example 1-(6), n-BuNH2 (20 ml) was added, and the mixture was stirred at room temperature for one hour. The reaction solution was concentrated, and the resulting crude product was purified by NH silica-gel chromatography with a mixed solvent of methanol and chloroform (methanol/chloroform=10%) to give the titled compound as a colorless crystal (2.737 g).
1H NMR (200 MHz, CDCl3) δ ppm: 1.53 (t, J=7.3 Hz, 3H), 1.65 (d, J=6.8 Hz, 3H), 3.53 (s, 3H), 4.14-4.58 (m, 3H)
(2) The compound (437 mg) obtained in Example 2-(1), DMPU (2.0 mL), 4-toluidine (257 mg), and NaH (240 mg, 60-72 wt % oily) were put in a pressure-resistant screw cap test tube. The mixture was stirred at 200° C. for 1.0 hour and then brought to room temperature, and 10% methanol/chloroform was added to the reaction solution. The reaction solution was filtered through NH silica gel and then concentrated, and the resulting brown oily substance was purified by column chromatography (NHSiO2, ethyl acetate/hexane=50-99%, methanol/chloroform=5%) to give the titled compound (brown oil compound, 224 mg).
1H NMR (200 MHz, CDCl3) δ ppm: 1.31 (t, J=7.3 Hz, 3H), 1.60 (d, J=6.6 Hz, 3H), 2.28 (5, 3H), 3.60-4.30 (m, 3H), 6.96-7.02 (m, 4H)
A solution of 3,4-dichlorobenzenesulfonyl chloride (154 μl) in THF (2.0 ml) was added at room temperature to a solution of the compound (220 mg) of Example 2-(2) and triethylamine (0.249 ml) in THF (9.0 ml), and the mixture was stirred at room temperature for five hours. The insoluble matter was filtered off, and the resulting residue was concentrated. The resulting crude product was purified by OH silica-gel column chromatography (elution solvent: ethyl acetate/hexane=50-99%) and then recrystallized (ethyl acetate-hexane) to give 160 mg of the titled compound (Compound 61) as a pale yellow powder.
1H NMR (600 MHz, DMSO-d6) δ ppm 1.18 (t, J=7.1 Hz, 3H), 1.30 (d, J=6.9 Hz, 3H), 2.23 (s, 3H), 3.87-4.03 (m, 2H), 4.63-4.72 (m, 1H), 7.00-7.12 (m, 2H), 7.35-7.45 (m, 2H), 7.74 (dd, J=8.6, 1.9 Hz, 1H), 7.86 (d, J=8.6 Hz, 1H), 7.96 (d, J=1.9 Hz, 1H), 8.27 (s, 1H), 8.57-8.66 (m, 1H)
Melting point: 93.0° C. to 99.0° C.
(1) The compound (5.00 g, 15.1 mmol) obtained in Example 1-(6), DMF (50 mL), 4-methylbenzenethiol (3.74 g, 30.1 mmol), and cesium carbonate (14.7 g, 45.1 mmol) were put in a pressure-resistant screw cap test tube. The mixture was stirred at 150° C. for four hours and thereafter brought back to room temperature, and a mixed solvent of chloroform/methanol (10/1) was added. The insoluble matter was filtered off. The filtrate was removed by evaporation under reduced pressure, and the resulting crude product was purified by column chromatography (NHSiO2, hexane/ethyl acetate=50/50 to 10/90, chloroform/methanol 40/1) to give 3.01 g of the titled compound (colorless oily compound).
1H NMR (600 MHz, CDCl3) δ ppm 1.21 (t, J=7.3 Hz, 3H), 1.59 (d, J=6.4 Hz, 3H), 2.31 (s, 3H), 4.00-4.18 (m, 3H), 7.06-7.14 (m, 2H), 7.26-7.30 (m, 2H)
(2) Starting from the compound obtained in Example 3-(1), the same procedure as used in Example 1-(8) was repeated to give the titled compound.
1H NMR (600 MHz, DMSO-d6) δ ppm 1.08 (t, J=7.3 Hz, 3H), 1.32 (d, J=6.9 Hz, 3H), 2.28 (s, 3H), 3.90-4.11 (m, 2H), 4.78 (q, J=6.9 Hz, 1H), 7.17-7.23 (m, 4H), 7.67-7.74 (m, 1H), 7.81-7.88 (m, 1H), 7.92-7.94 (m, 1H), 8.77 (s, 1H)
Yield: 46%, Melting point: 141.0° C. to 143.0° C.
To a solution of the compound (0.300 g) of Example 3-(2) in chloroform (6 mL), m-chloroperbenzoic acid (0.329 g) was added, and the mixture was stirred at room temperature for one hour. Then, a further portion of m-chloroperbenzoic acid (0.329 g) was added, and the mixture was stirred at room temperature for 15 hours. Thereafter, a further portion of m-chloroperbenzoic acid (0.329 g) was added, and the mixture was stirred at room temperature for two hours. Then, ethyl acetate was added, and the organic layer was washed with 5% aqueous Na2S2O3 solution and thereafter with saturated aqueous sodium bicarbonate, dried over anhydrous magnesium sulfate, filtered, and evaporated under reduced pressure to remove the solvent. The resulting residue was purified by column chromatography (acidic OH SiO2, hexane/ethyl acetate=70/30 to 40/60) and then recrystallized (ethyl acetate-hexane) to give 0.196 g of the titled compound (Compound 57) (colorless powdered compound).
1H NMR (600 MHz, DMSO-d6) δ ppm 1.25-1.35 (m, 6H), 2.45 (s, 3H), 4.23-4.40 (m, 2H), 4.78-4.86 (m, 1H), 7.52-7.56 (m, 2H), 7.62-7.67 (m, 1H), 7.78-7.82 (m, 1H), 7.86-7.94 (m, 3H)
Melting point: 164.0° C. to 165.0° C.
(1) EtNH2 (10 ml, 70% aqueous solution) was added to N-(t-butoxycarbonyl)-D-alanine methyl ester (4.76 g) in methanol (20 ml), and the mixture was stirred at room temperature for 19 hours. The reaction solution was concentrated, and the resulting crude product was purified by column chromatography (acidic OH SiO2, chloroform/ethyl acetate=10-50%) to give 3.96 g of the titled compound (colorless amorphous substance).
1H NMR (200 MHz, CDCl3) δ ppm: 1.12 (t, J=7.2 Hz, 3H), 1.35 (d, J=7.2 Hz, 3H), 1.46 (s, 9H), 3.18-3.37 (m, 2H), 4.00-4.20 (m, 1H), 4.90-5.10 (m, 1H), 6.04-6.22 (m, 1H)
(2) A Lawesson's reagent (8.89 g) was added to a solution of the compound (3.96 g) of Example 5-(1) in THF (92 ml), and the mixture was stirred at room temperature for one hour and thereafter at 50° C. for 30 minutes. The reaction solution was cooled to room temperature, and the insoluble matter was filtered off. Then, the resulting residue was concentrated. The resulting crude product was purified by column chromatography (acidic OH SiO2, chloroform/ethyl acetate=10-50%) and thereafter by NH silica-gel column chromatography (ethyl acetate/hexane=50%) to give the titled compound (3.75 g) as a colorless powder.
1H NMR (200 MHz, CDCl3) δ ppm: 1.26 (t, J=7.2 Hz, 3H), 1.38-1.52 (m, 3H), 1.45 (s, 9H), 3.60-3.77 (m, 2H), 4.36-4.53 (m, 1H), 5.10-5.32 (m, 1H), 7.99-8.24 (m, 1H)
(3) Hg (OAc)2 (2.43 g) was added to a solution of the compound (1.61 g) obtained in Example 5-(2) and 4-methylphenylacetic acid hydrazide (1.25 g) in CH3CN (30 mL), and the mixture was stirred at room temperature for 42 hours. Ethyl acetate was added to the reaction solution, and the insoluble matter was filtered off through celite. The filtrate was washed with 1N aqueous KHSO4 solution and thereafter with saturated aqueous sodium chloride, dried over anhydrous magnesium sulfate, filtered, and evaporated under reduced pressure to remove the solvent. The resulting crude product was purified by column chromatography (acidic OH SiO2, ethyl acetate/hexane=50-100%, methanol/chloroform=1/1) (neutral OH SiO2, methanol/chloroform=1/10) to give 0.530 g of the titled compound (colorless amorphous substance).
1H NMR (600 MHz, CDCl3) δ ppm: 1.04 (t, J=7.3 Hz, 3H), 1.41 (s, 9H), 1.61 (d, J=6.9 Hz, 3H), 2.30 (s, 3H), 3.73-3.90 (m, 2H), 4.06-4.20 (m, 2H), 4.85-4.94 (m, 1H), 5.11-5.17 (m, 1H), 7.09 (s, 4H)
(4) Trifluoroacetic acid (5 mL) was added to a solution of the compound (0.496 g) of Example 5-(3) in chloroform (5 mL), and the mixture was stirred at room temperature for 18 hours. Aqueous sodium hydroxide (1.0N) was added, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated aqueous sodium chloride, dried over anhydrous sodium sulfate, filtered, and evaporated under reduced pressure to remove the solvent, whereby 0.148 g of the titled compound was obtained as a colorless oily compound.
1H NMR (600 MHz, CDCl3) δ ppm: 1.09 (t, J=7.3 Hz, 3H), 1.57 (d, J=6.9 Hz, 3H), 2.30 (s, 3H), 3.74-3.94 (m, 2H), 4.01-4.20 (m, 3H), 7.10 (s, 4H)
(5) Triethylamine (0.25 mL) and 3,4-dichlorobenzenesulfonyl chloride (0.707 mL) were added to a solution of the compound (0.144 g) of Example 5-(4) in THF (3 mL), and the mixture was stirred at room temperature for 3.5 hours. Then, 2N aqueous hydrochloric acid was added, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated aqueous sodium chloride, dried over anhydrous magnesium sulfate, filtered, and evaporated under reduced pressure to remove the solvent. The resulting residue was purified by column chromatography (acidic OH SiO2, chloroform/methanol=50/1 to 10/1) and then recrystallized (ethyl acetate-hexane) to give 0.100 g of the titled compound (Compound 56) as a colorless powdered compound.
1H NMR (600 MHz, DMSO-D6) δ ppm: 0.91 (t, J=7.1 Hz, 3H), 1.26 (d, J=6.9 Hz, 3H), 2.23 (s, 3H), 3.77-3.92 (m, 2H), 4.00 (s, 2H), 4.60-4.70 (m, 1H), 7.03-7.12 (m, 4H), 7.64-7.68 (m, 1H), 7.79-7.82 (m, 1H), 7.89-7.91 (m, 1H), 8.64 (s, 1H)
Melting point: 189.0° C. to 191.0° C.
K2CO3 (78 mg) and MeI (0.022 ml) were added at room temperature to a solution of Compound 12 (150 mg) of Example 1 in dimethylformamide (2.0 ml), and the mixture was stirred at room temperature for three hours. Water was added to the reaction solution, and the mixture was extracted with a mixed solution of methanol/chloroform (methanol/chloroform=1/4). The resulting organic layer was washed with saturated aqueous sodium chloride, dried (MgSO4), filtered, and evaporated under reduced pressure to remove the solvent. After eluting the residue with a mixed solvent of ethyl acetate and hexane, the resulting elute was purified by column chromatography (acidic OH SiO2, ethyl acetate/hexane=50-99%, methanol/chloroform=0-10%) and then recrystallized (ethyl acetate-hexane) to give 111 mg of the titled compound as a colorless powdered compound.
Melting point: 125.5° C. to 126.5° C.
(1) In a pressure-resistant screw cap test tube, 3-bromophenol (1.50 g), 1,4-dioxa-8-azaspiro[4,5]decan (1.49 g), Pd2(dba)3 (0.079 g), (2′-dicyclohexylphosphanyl-biphenyl-2-yl)-dimethylamine (0.082 g), and LiN(TMS)2 (20% in THF, 18 mL) were put, and the mixture was stirred at 65° C. for 7.5 hours. Ethyl acetate was added, and the organic layer was washed with 1N aqueous hydrochloric acid and thereafter with saturated aqueous sodium bicarbonate, dried over anhydrous sodium sulfate, filtered, and evaporated under reduced pressure to remove the solvent. The resulting residue was purified by column chromatography (acidic OH SiO2, hexane/ethyl acetate=70/30 to 60/40) to give 1.96 g of the titled compound (brown oil).
1H NMR (600 MHz, CDCl3) δ ppm: 1.79-1.83 (m, 4H), 3.27-3.35 (m, 4H), 3.98 (s, 4H), 4.86 (s, 1H), 6.28 (dd, J=8.0, 2.5 Hz, 1H), 6.41 (t, J=2.3 Hz, 1H), 6.51 (dd, J=8.5, 2.5 Hz, 1H), 7.08 (t, J=8.3 Hz, 1H)
(2) Starting from the compound obtained in Example 7-(1) in place of 4-fluorophenol, the same procedure as used in Example 1-(7) was repeated to give the titled compound (brown oily substance, yield 58%).
1H NMR (600 MHz, CDCl3) δ ppm: 1.38 (t, J=7.3 Hz, 3H), 1.57 (d, J=6.9 Hz, 3H), 1.77-1.83 (m, 4H), 3.27-3.36 (m, 4H), 3.95-4.06 (m, 6H), 4.14 (g, J=6.9 Hz, 1H), 6.70-6.75 (m, 2H), 6.97 (t, J=2.3 Hz, 1H), 7.20 (t, J=8.3 Hz, 1H)
(3) Starting from the compound obtained in Example 7-(2), the same procedure as used in Example 1-(8) was repeated to give the titled compound (colorless powder, yield 64%).
Melting point: 174.0° C. to 179.0° C.
To a solution of the compound (0.981 g) of Example 7 in THF (10 mL), 2N aqueous hydrochloric acid (8.4 mL) was added, and the mixture was stirred at room temperature for one hour. Concentrated hydrochloric acid (2 mL) was added, and the mixture was stirred at 50° C. for six hours. Saturated aqueous sodium bicarbonate was added for neutralization, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated aqueous sodium chloride, dried over anhydrous magnesium sulfate, filtered, and then evaporated under reduced pressure to remove the solvent. The resulting residue was purified by column chromatography (acidic OH SiO2, ethyl acetate) and then recrystallized (chloroform-hexane) to give the titled compound (0.572 g, colorless powder).
Melting point: 188.5° C. to 190.5° C.
NaBH4 (0.021 g) was added at 0° C. to a solution of the compound (0.150 g) of Example 8 in methanol (3.0 ml), and the mixture was stirred at room temperature for 16 hours. Water was added, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated aqueous sodium chloride, dried over MgSO4, filtered, and evaporated under reduced pressure to remove the solvent. The resulting crude product was purified by column chromatography (neutral OH SiO2, methanol/chloroform=1/50 to 1/10) and then recrystallized (ethyl acetate-hexane) to give 0.113 g of the titled compound (Compound 93) as a colorless powder.
Melting point: 167.5° C. to 169.5° C.
(1) Starting from 3-aminophenol in place of 4-fluorophenol, the same procedure as used in Example 1-(7) was repeated to give the titled compound (brown oily substance, yield 99%).
1H NMR (600 MHz, CDCl3) δ ppm; 1.37 (t, J=7.1 Hz, 3H), 1.58 (d, J=6.9 Hz, 3H), 3.96-4.05 (m, 2H), 4.15 (q, J=6.7 Hz, 1H), 6.45-6.50 (m, 1H), 6.62-6.67 (m, 1H), 6.71-6.75 (m, 1H), 7.11 (t, J=8.0 Hz, 1H)
(2) Triethylamine (4.16 ml) and 3,4-dichlorobenzenesulfonyl chloride (3.73 g) were added to a solution of the compound (3.69 g) of Example 10-(1) in THF (15 ml), and the mixture was stirred at room temperature overnight. The reaction solution was concentrated, and the resulting crude product was purified by column chromatography (NHSiO2, methanol/chloroform) and recrystallized (ethyl acetate/hexane) to give 3.60 g of the titled compound (Compound 82) (colorless powdered compound).
Melting point: 142.0° C. to 145.0° C.
To a solution of the compound (700 mg) of Example 10 in AcOH (4.6 ml), 2,5-dimethoxy-tetrahydrofuran (375 μl) was added, and the mixture was stirred at 130° C. for 30 minutes. The reaction solution was cooled to room temperature and concentrated under reduced pressure. Thereafter, water was added, and the mixture was extracted with methanol/chloroform (1/4). Then, the organic layer was washed with saturated aqueous sodium chloride, dried over MgSO4, filtered, and evaporated under reduced pressure to remove the solvent. The resulting residue was purified by column chromatography (acidic OH SiO2, ethyl acetate/hexane=33-100%, methanol/chloroform=5%) and then recrystallized (ethyl acetate-hexane) to give the titled compound (Compound 86) (173 mg, colorless powdered compound).
Melting point: 176.0° C. to 177.0° C.
A mixture of the compound (300 mg) obtained in Example 10-(2) and ethyl formate (1.1 ml) was stirred at 105° C. for 24 hours. The reaction solution was cooled to room temperature and concentrated under reduced pressure. The resulting crude product was purified by column chromatography (acidic OH SiO2, ethyl acetate/hexane=50-100%, methanol/chloroform=5%) and then recrystallized (ethyl acetate-hexane) to give the titled compound (Compound 90) (81 mg, colorless powder).
Melting point: 168.0° C. to 170.0° C.
A mixture of the compound (300 mg) obtained in Example 10-(2), potassium cyanate (65 mg), AcOH (1.0 ml), and water (0.5 ml) was stirred at room temperature for one hour. Water was added, and the mixture was extracted with methanol/chloroform (1/4). The organic layer was dried over MgSO4, filtered, and evaporated to remove the solvent. The resulting crude product was purified by column chromatography (acidic OH SiO2, ethyl acetate/hexane=50-99%, methanol/chloroform=0-3%) and then recrystallized (ethyl acetate-hexane) to give the titled compound (Compound 91) (273 mg, colorless powder).
Melting point: 137.0° C. to 138.0° C.
Dimethylcarbamyl chloride (146 μl) was added to a solution of the compound (300 mg) of Example 10-(2) and triethylamine (368 μl) in chloroform (1.1 ml), and the mixture was stirred at room temperature for three hours. The reaction solution was concentrated, and the resulting crude product was purified by column chromatography (neutral OH SiO2, ethyl acetate/hexane=50-99%, methanol/chloroform=0-3%) and then recrystallized (ethyl acetate-hexane) to give the titled compound (Compound 97) (93 mg, colorless powder).
Melting point: 158.0° C. to 159.0° C.
Ethyl isocyanate (63 μl) was added to a solution of the compound (300 mg) of Example 10-(2) in chloroform (1.1 ml), and the mixture was stirred at room temperature for one hour. The reaction solution was concentrated, and the resulting crude product was purified by column chromatography (neutral OH SiO2, ethyl acetate/hexane=50-99%, methanol/chloroform=0-3%) and then recrystallized (ethyl acetate-hexane) to give the titled compound (Compound 92) (228 mg, colorless powder).
Melting point; 118.0° C. to 120.0° C.
Methanesulfonyl chloride (114 mg) was added to a solution of the compound (300 mg) of Example 10-(2) in pyridine (1.32 ml), and the mixture was stirred at room temperature for three hours. Hydrochloric acid (1.0 N) was added, and the mixture was extracted with methanol/chloroform (1/4). The organic layer was dried over Na2SO4, filtered, and concentrated, and the resulting crude product was purified by column chromatography (neutral OH SiO2, ethyl acetate/hexane=50-99%, methanol/chloroform=0-5%) and then recrystallized (ethyl acetate-hexane) to give the titled compound (Compound 102) (281 mg, colorless powder).
Melting point: 117.0° C. to 118.0° C.
(1) Starting from 3-benzyloxyphenol in place of 4-fluorophenol, the same procedure as used in Example 1-(7) was repeated to give the titled compound (brown oily substance, yield 84%).
1H NMR (600 MHz, CDCl3), 6 ppm: 1.39 (t, J=7.3 Hz, 3H), 1.60 (d, J=6.4 Hz, 3H), 3.96-4.09 (m, 2H), 4.17 (q, J=6.9 Hz, 1H), 5.06 (s, 2H), 6.79-6.84 (m, 1H), 6.91-6.96 (m, 1H), 7.04-7.08 (m, 1H), 7.22-7.46 (m, 6H)
(2) A suspension of the compound (1.5 g) of Example 17-(1) and Pd(OH)2/C (150 mg, Pd 20 wt %) in methanol (4.0 ml) was stirred at room temperature for a day under a hydrogen atmosphere (approximately 1 atmospheric pressure). The reaction mixture was filtered through celite and evaporated to remove the solvent. The resulting crude product was purified by column chromatography (NH SiO2, methanol/chloroform=0-25%) to give the titled compound (gray amorphous substance, 323 mg).
1H NMR (600 MHz, DMSO-d6), 6 ppm: 1.23 (t, J=7.3 Hz, 3H), 1.54 (d, J=6.9 Hz, 3H), 3.82-4.09 (m, 2H), 4.60 (q, J=6.0 Hz, 1H), 6.61-6.69 (m, 2H), 6.70-6.77 (m, 1H), 7.14-7.21 (m, 1H), 8.28-9.11 (m, 2H), 9.43-10.55 (m, 1H)
(3) Triethylamine (0.225 ml) and 3,4-dichlorobenzenesulfonyl chloride (198 mg) were added at room temperature to a solution of the compound (200 mg) of Example 17-(2) in THF (2.0 ml), and the mixture was stirred at room temperature for 12 hours. The mixture was evaporated to remove the solvent, and KOH (104 mg), ethanol (4.0 ml), and water (4.0 ml) were added to the resulting crude product. The mixture was stirred at 120° C. for 40 minutes, and then cooled to room temperature. HCl (1.0 N) was added, and the mixture was extracted with a mixed solution of methanol/chloroform (methanol/chloroform=1/4), dried (MgSO4), filtered, and evaporated under reduced pressure to remove the solvent. The resulting crude product was purified by column chromatography (acidic OH SiO2, ethyl acetate/hexane=30-70%) and then recrystallized (methanol/chloroform/hexane) to give 37 mg of the titled compound (Compound 114) as a colorless powder.
Melting point: 185.0° C. to 186.0° C.
(1) Starting from 3-hydroxybenzoic acid t-butyl ester in place of 4-fluorophenol, the same procedure as used in Example 1-(7) was repeated to give the titled compound (colorless and oily, yield 24%).
1H NMR (600 MHz, CDCl3), b ppm: 1.43 (t, J=7.1 Hz, 3H), 1.58-1.62 (m, 12H), 4.01-4.13 (m, 2H), 4.18 (q, J=6.6 Hz, 1H), 7.42-7.46 (m, 1H), 7.61-7.65 (m, 1H), 7.82-7.85 (m, 1H), 7.87-7.91 (m, 1H)
(2) Starting from the compound obtained in Example 18-(1), the same procedure as used in Example 1-(8) was repeated to give the titled compound (colorless powder, yield 68%).
1H NMR (600 MHz, CDCl3), 6 ppm: 1.38 (t, J=7.3 Hz, 3H), 1.51 (d, J=6.9 Hz, 3H), 1.58 (s, 9H), 3.93-4.01 (m, 2H), 4.29-4.35 (m, 1H), 7.43-7.48 (m, 1H), 7.50-7.60 (m, 3H), 7.64-7.69 (m, 1H), 7.81-7.89 (m, 2H), 7.90-7.94 (m, 1H)
Trifluoroacetic acid (0.12 ml) was added to a solution of the compound (260 mg) of Example 18 in chloroform (12.0 ml), and the mixture was stirred at room temperature for five days. The mixture was evaporated to remove the solvent, and the resulting crude product was purified by column chromatography (neutral OH SiO2, ethyl acetate/hexane=50-99%, methanol/chloroform=0-20%) and then recrystallized (methanol/chloroform/hexane) to give the titled compound (Compound 113) (101 mg, colorless powder).
Melting point: 183.0° C. to 185.0° C.
To a solution of the compound (12.5 mg) of Example 1-(7) in THF (0.3 ml), triethylamine (25 μl) was added, and then a solution of 4-methoxybenzenesulfonylchloride (15.5 mg) in THF (0.3 ml) was added. The mixture was stirred at room temperature for two hours. PSA (product name: VARIAN Inc. polymer supported amine, 1.4 meq/g) (75 μl) was added to the reaction mixture, and the mixture was stirred at room temperature for 12 hours. The insoluble matter was filtered off, and the resulting residue was evaporated to remove the solvent. The resulting crude product was purified by silica-gel column chromatography (acidic OH SiO2, ethyl acetate/hexane=50-100%, methanol/chloroform=10%) to give 10.7 mg of the titled compound (Compound 175) as a colorless powder.
APCI MS (M−H)−: 419, APCI MS (M+H)+: 421
(1) The following compound was obtained by the same procedure as used in Example 1-(7) (the procedure will be specifically described below).
In a pressure-resistant screw cap test tube, N,N′-dimethylpropyleneurea (DMPU) (4.0 ml), 3-(4-methyl-piperazin-1-yl)-phenol (500 mg), and cesium carbonate (2.21 g) were added to the compound (750 mg) obtained in Example 1-(6), and the mixture was stirred at 160° C. for three hours. The mixture was brought to room temperature, and saturated aqueous sodium chloride was added. The mixture was extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate, filtered, and evaporated under reduced pressure to remove the solvent. The resulting crude product was purified by column chromatography (NH SiO2, chloroform/methanol=50/1-30/1) to give the titled compound (yellow oily compound, 427 mg).
1H NMR (600 MHz, CDCl3) δ ppm: 1.40 (t, J=7.3 Hz, 3H), 1.59 (d, J=6.9 Hz, 3H), 2.35 (s, 3H), 2.52-2.61 (m, 4H), 3.22-3.27 (m, 4H), 3.97-4.08 (m, 2H), 4.15 (q, J=6.9 Hz, 1H), 6.71-6.80 (m, 2H), 6.99-7.03 (m, 1H), 7.20-7.25 (m, 1H)
(2) The following compound was obtained by the same procedure as used in Example 1-(8) (the procedure will be specifically described below).
Triethylamine (0.41 mL) and 3,4-dichlorobenzenesulfonyl chloride (0.232 mL) were added at room temperature to a solution of the compound (427 mg) of Example 21-(1) in THF (8.0 mL), and the mixture was stirred at room temperature overnight. The reaction mixture was concentrated, and the resulting residue was purified by column chromatography (NH SiO2, chloroform/methanol=50/1-30/1) and then recrystallized (ethyl acetate-hexane) to give 280 mg of the titled compound (Compound 45) as a colorless powder.
Melting point: 194.0° C. to 196.0° C.
(1) The following compound was obtained by the same procedure as used in Example 1-(7) (the procedure will be specifically described below).
In a pressure-resistant screw cap test tube, N,N′-dimethylpropyleneurea (DMPU) (5.0 ml), 1H-indol-6-ol (601 mg), and cesium carbonate (2.94 g) were added to the compound (1.00 g) obtained in Example 1-(6), and the mixture was stirred at 200° C. for one hour and then brought to room temperature. Saturated aqueous sodium chloride was added, and the mixture was extracted with ethyl acetate. The organic layer was dried (MgSO4), filtered, and evaporated under reduced pressure to remove the solvent. Then, the resulting crude product was purified by column chromatography (NH SiO2, chloroform/methanol=50/1-30/1) to give the titled compound (yellow oily compound, 750 mg).
1H NMR (600 MHz, CDCl3) δ ppm: 1.42 (t, J=7.1 Hz, 3H), 1.58 (d, J=6.4 Hz, 3H), 3.98-4.10 (m, 2H), 4.15 (q, J=6.7 Hz, 1H), 6.30-6.39 (m, 1H), 6.87-7.00 (m, 2H), 7.39-7.52 (m, 2H), 9.55 (s, 1H)
(2) The following compound was obtained by the same procedure as used in Example 1-(8) (the procedure will be specifically described below).
Triethylamine (0.77 mL) and 3,4-dichlorobenzenesulfonyl chloride (1.02 g) were added at room temperature to the compound (748 mg) of Example 22-(1) in THF (10.0 mL), and the mixture was stirred at room temperature overnight. The reaction mixture was concentrated, and the resulting residue was purified by column chromatography (NH SiO2, chloroform/methanol=30/1) and then recrystallized (CHCl3/MeOH/hexane) to give 815 mg of the titled compound (Compound 64) as a colorless powder.
Melting point: 223.0° C. to 224.0° C.
Starting from (R)-2-amino-3-benzyloxy-propionic acid methyl ester in place of N-(t-butoxycarbonyl)-D-alanine methyl ester used in Example 1-(1), the same procedure as used in Example 1 was repeated to give the titled compound (Compound 695) as a colorless powder.
1H NMR (200 MHz, CDCl3) δ ppm: 1.31 (t, J=7.3 Hz, 3H), 3.65-4.03 (m, 4H), 4.35 (s, 2H), 4.67 (q, J=7.9 Hz, 1H), 7.03-7.39 (m, 10H), 7.68 (dd, J=8.8, 2.2 Hz, 1H), 7.93 (d, J=2.2 Hz, 1H)
AlCl3 (49 mg) and PhNMe2 (148 mg) were added to a solution of the compound (69 mg) of Example 23 in CH2Cl2 (2.0 ml), and the mixture was stirred at room temperature for one hour. Then, AcOEt was added, and the mixture was washed with 1N hydrochloric acid and thereafter with saturated aqueous sodium chloride. The organic layer was dried (Na2SO4), filtered, and evaporated under reduced pressure to remove the solvent. Then, the resulting crude product was purified by column chromatography (OH SiO2, AcOEt/hexane=2/1) to give 54 mg of the titled compound (Compound 696) as a colorless powder.
1H NMR (200 MHz, CDCl3) δ ppm: 1.41 (t, J=7.5 Hz, 3H), 3.62 (dd, J=4.8, 11.8 Hz, 1H), 3.88 (dd, J=4.8, 11.8 Hz, 1H), 4.05 (q, J=7.5 Hz, 2H), 4.51-4.60 (m, 1H), 7.04-7.13 (m, 2H), 7.23-7.31 (m, 3H), 7.53 (d, J=8.8 Hz, 1H), 7.70 (dd, J=8.8, 2.2 Hz, 1H), 7.93 (d, J=2.2 Hz, 1H)
A solution of diethylaminosulfurtrifluoride (DAST) (16 mg) in CH2Cl2 (1.0 ml) was added at 0° C. to a solution of the compound (45 mg) of Example 24 in CH2Cl2 (2.0 ml), and the mixture was stirred at the same temperature for one hour. The reaction solution was added to saturated aqueous sodium bicarbonate, and the mixture was extracted with AcOEt. The organic layer was dried (Na2SO4) and filtered evaporated under reduced pressure to remove the solvent. The resulting crude product was purified by column chromatography (OH SiO2, AcOEt/hexane=30-50%) to give 6 mg of the titled compound (Compound 696) as a pale yellow powder.
1H NMR (200 MHz, CDCl3) δ ppm 1.39 (t, J=7.5 Hz, 3H), 4.01 (q, J=7.5 Hz, 2H), 4.45-4.86 (m, 3H), 6.98 (br, 1H), 7.05-7.36 (m, 4H), 7.48 (d, J=8.5 Hz, 1H), 7.69 (dd, J=8.5, 2.2 Hz, 1H), 7.93 (d, J=2.2 Hz, 1H)
(1) To a solution of diethyl formate (48.64 g) in MeOH (100 ml), a solution of hydrazine monohydrate (16.33 g) in MeOH (100 ml) was added dropwise at −5° C. over 1.5 hours, and ethylisothiocyanate (29.00 g) was added at the same temperature. The mixture was warmed to room temperature and stirred overnight. The insoluble matter was filtered off, and the resulting residue was evaporated to remove the solvent. The resulting solid was washed with a mixed solution of hexane/AcOEt (1/1) and dried, and the resulting white powder (55.30 g) was added to an aqueous solution (228 ml) of NaOH (913 mg). The mixture was stirred at 70° C. for four hours, at room temperature overnight, and then at 100° C. for seven hours. The reaction mixture was concentrated to approximately ⅓, and then a saturated aqueous NH4Cl solution (300 ml) was added. The resulting white precipitate was filtered and dried to give the titled compound (15.06 g) as a colorless powder.
1H NMR (200 MHz, CDCl3) δ ppm 1.38 (t, J=6.6 Hz, 3H), 1.45 (t, J=6.5 Hz, 3H), 4.40-4.57 (m, 4H), 11.58-11.84 (m, 1H)
(2) Starting from the compound obtained in Example 26-(1), the same procedure as used in Example 1-(4) was repeated to give the titled compound as a light yellow solid (yield 84%).
1H NMR (200 MHz, CDCl3) δ ppm 1.31-1.50 (m, 6H), 2.80 (s, 3H), 4.31 (q, J=7.2 Hz, 2H), 4.47 (q, J=7.1 Hz, 2H)
(3) Starting from the compound obtained in Example 26-(2), the same procedure as used in Example 1-(5) was repeated to give the titled compound as a light yellow solid (yield 84%).
1H NMR (200 MHz, CDCl3) δ ppm 1.48 (t, J=7.1 Hz, 3H), 1.53 (t, J=7.2 Hz, 3H), 3.60 (s, 3H), 4.53 (q, J=7.1 Hz, 2H), 4.75 (q, J=7.2 Hz, 2H)
(4) To a suspension of NaH (1.236 g, oil free) in THF (68 ml), 4-fluorophenol (4.62 g) was added at 0° C., and the mixture was warmed to room temperature and stirred for 30 minutes. The reaction mixture was cooled to 0° C., and a solution of the compound (8.49 g) of Example 26-(3) in THF (20 ml) was added. The mixture was stirred at room temperature for 30 minutes and thereafter at 70° C. for 1.5 hours. The temperature was cooled to room temperature, and then the reaction mixture was added to a saturated aqueous NH4Cl solution (500 ml). The mixture was extracted with AcOEt (500 ml) and washed with saturated aqueous sodium chloride. The organic layer was dried (MgSO4), filtered, and concentrated, and the resulting crude product was purified by column chromatography (OH acid SiO2, AcOEt/hexane=10-99%) to give the titled compound (5.144 g, light yellow solid).
1H NMR (200 MHz, CDCl3) δ ppm 1.35-1.52 (m, 6H), 4.36 (q, J=7.2 Hz, 2H), 4.48 (q, J=7.2 Hz, 2H), 7.02-7.18 (m, 2H), 7.28-7.48 (m, 2H)
(5) DiBAl-H (0.99 M, toluene solution, 36.1 ml) was added at −5° C. to a solution of the compound (5.00 g) of Example 26-(4) in THF (50 ml), and the mixture was stirred at the same temperature for three hours. Then, 1N-hydrochloric acid was added to the reaction solution, and the mixture was extracted with AcOEt. The organic layer was washed with saturated aqueous sodium chloride, dried (MgSO4), filtered, and concentrated, and the resulting crude product was purified by column chromatography (neutral OH SiO2, AcOEt/hexane=5-40%) to give the titled compound (2.22 g, colorless and oily).
1H NMR (600 MHz, CDCl3) δ ppm ppm 1.44 (t, J=7.3 Hz, 3H), 4.37 (J=7.3 Hz, 2H), 7.10-7.17 (m, 2H), 7.36-7.40 (m, 2H)
(6) A solution of the compound (1.00 g) obtained in Example 26-(5), 4-methylbenzene sulfonic acid amide (660 mg), and cesium carbonate (1.39 g) in chloroform (21 ml) was stirred at 45° C. for nine hours. The reaction solution was filtered through celite, and the filtrate was concentrated. The resulting residue was purified by silica-gel chromatography (neutral OH silica gel, elution solvent: AcOEt/hexane 0-30%) to give the titled compound (630 mg) as a pale yellow solid.
1H NMR (600 MHz, CDCl3) δ ppm 1.30 (t, J=7.1 Hz, 3H), 2.42 (s, 3H), 4.27-4.43 (m, 2H), 7.07-7.15 (m, 2H), 7.31-7.39 (m, 4H), 7.57-7.62 (m, 2H), 8.85 (s, 1H)
(7) Under an argon atmosphere, a solution of (trifluoromethyl)trimethyl silane (120 μl) in THF (5.0 ml) was added at −35° C. to a suspension of the compound (200 mg) of Example 26-(6) and tetramethylfluoride (60 mg) in THF (5.0 ml), and the mixture was stirred at the same temperature for an hour and a half. A further portion of tetramethylfluoride (60 mg) and thereafter a further portion of (trifluoromethyl)trimethyl silane (60 mg) were added to the reaction solution at the same temperature, and the mixture was stirred at the same temperature for two hours and warmed to −10° C., and a saturated aqueous ammonium chloride solution was added, and the aqueous layer was extracted with ethyl acetate. The organic layer was dried over magnesium sulfate and filtered, and the filtrate was concentrated. The resulting residue was purified by silica-gel column chromatography (neutral —OH silica gel, AcOEt/hexane 0-40%) to give the titled compound (219 mg) as a pale yellow oily substance.
1H NMR (600 MHz, CDCl3) δ ppm 1.32 (t, J=7.3 Hz, 3H), 2.40 (s, 3H), 3.80-3.87 (m, 2H), 4.86-4.92 (m, 1H), 5.59 (d, J=8.3 Hz, 1H), 7.06-7.13 (m, 2H), 7.27-7.31 (m, 2H), 7.32-7.37 (m, 2H), 7.53-7.59 (m, 2H)
(8) HCl (4N, dioxane solution, 1.25 ml) was added at room temperature to a solution of the compound (215 mg) of Example 26-(7) in methanol (5.0 ml), and the mixture was stirred at 85° C. for two hours. The reaction solution was concentrated, and the resulting residue was purified by silica-gel column chromatography (NH SiO2, AcOEt/hexane 0-50%) to give the titled compound (82 mg) as a colorless oily substance.
(600 MHz, CDCl3) δ ppm: 1.43 (t, J=7.3 Hz, 3H), 3.97-4.11 (m, 2H), 4.47-4.54 (m, 1H), 7.06-7.12 (m, 2H), 7.35-7.40 (m, 2H)
(9) Starting from the compound (79 mg) obtained in Example 26-(8), the same procedure as used in Example 1-(8) was repeated to give the titled compound (3 mg) as a light yellow oily substance.
(600 MHz, CDCl3) δ ppm: 1.43 (t, J=7.1 Hz, 3H), 3.91-4.07 (m, 2H), 5.06-5.13 (m, 1H), 7.07-7.16 (m, 2H), 7.29-7.35 (m, 2H), 7.50-7.57 (m, 1H), 7.67-7.74 (m, 1H), 7.90 (s, 1H)
(1) In a pressure-resistant screw cap test tube, DMPU (10 ml), 3-piperazinylphenol (1.34 g), and Cs2CO3 (6.13 g) were added to the compound (2.08 g) obtained in Example 1-(6), and the mixture was stirred at 200° C. for 40 minutes. It was cooled to room temperature and then concentrated under reduced pressure, and the resulting crude product was purified by column chromatography (NH SiO2, AcOEt to MeOH/CHCl3=1/50) to give the titled compound (yellow oily compound, 1.17 g).
1H NMR (600 MHz, CDCl3) δ ppm: 1.40 (t, J=7.1 Hz, 3H), 1.59 (d, J=6.9 Hz, 3H), 2.98-3.04 (m, 4H), 3.14-3.19 (m, 4H), 3.97-4.09 (m, 2H), 4.13-4.18 (m, 1H), 6.70-6.80 (m, 2H), 6.97-7.03 (m, 1H), 7.21-7.26 (m, 1H)
(2) AcCl (0.24 ml) was added at −30° C. to a solution of the compound (1.06 g) of Example 27-(1) and Et3N (1.4 ml) in THF (20 ml), and the mixture was stirred at the same temperature for two hours. Then, the mixture was warmed to room temperature and then stirred for another five hours. The reaction mixture was concentrated, and the resulting crude product was purified by column chromatography (neutral OH SiO2, MeOH/CHCl3=1/5) to give a mixture (315 mg, colorless solid) of the titled compound and triethylamine hydrochloride.
1H NMR (600 MHz, CDCl3) δ ppm: 1.35 (t, J=7.3 Hz, 3H), 1.72 (d, J=6.4 Hz, 3H), 2.12 (s, 3H), 3.14-3.23 (m, 4H), 3.57-3.64 (m, 2H), 3.71-3.77 (m, 2H), 3.87-4.10 (m, 2H), 4.57-4.66 (m, 1H), 6.70-6.81 (m, 2H), 6.95-6.99 (m, 1H), 7.21-7.26 (m, 1H)
(3) Water was added to a mixture (307 mg) of 1-(4-[3-[5-((R)-1-aminoethyl)-4-ethyl-4H-[1,2,4]triazol-3-yloxy]-phenyl]-piperazin-1-yl)-ethanone obtained in Example 27-(2) and triethylamine hydrochloride, 3,4-dichlorobenzenesulfonyl chloride (0.13 ml), and K2CO3 (355 mg). The mixture was stirred at room temperature for 15 hours. The precipitated solid was filtered and purified by column chromatography (NH SiO2, MeOH/CHCl3=1/50) to give the titled compound (Compound 697) (117 mg, colorless syrup).
1H NMR (600 MHz, CDCl3) δ ppm: 1.38 (t, J=7.3 Hz, 3H), 1.52 (d, J=6.9 Hz, 3H), 2.14 (s, 3H), 3.14-3.27 (m, 4H), 3.56-3.64 (m, 2H), 3.72-3.80 (m, 2H), 3.88-4.01 (m, 2H), 4.58-4.68 (m, 1H), 5.98-6.06 (m, 1H), 6.72-6.82 (m, 2H), 6.95-7.01 (m, 1H), 7.25-7.30 (m, 1H), 7.51-7.57 (m, 1H), 7.65-7.73 (m, 1H), 7.89-7.97 (m, 1H)
A mixture of the compound (107 mg) obtained in Example 27-(3), NaOH (105 mg), water (2.0 ml), and EtOH (4.0 ml) was stirred at 80° C. for one hour and then stirred at 100° C. for 18 hours. The mixture was cooled to room temperature and then extracted with AcOEt. The organic layer was washed with saturated aqueous sodium chloride, dried (MgSO4), filtered, and concentrated. The resulting crude product was purified by column chromatography (NH SiO2, MeOH/CHCl3=1/30) and then recrystallized (AcOEt/hexane) to give the titled compound (Compound 683) (55 mg, colorless powder).
1H NMR (600 MHz, DMSO-d6) δ ppm: 1.24 (t, J=7.3 Hz, 3H), 1.31 (d, J=6.9 Hz, 3H), 2.77-2.86 (m, 4H), 3.03-3.10 (m, 4H), 3.81-3.99 (m, 2H), 4.67-4.75 (m, 1H), 6.56-6.62 (m, 1H), 6.76-6.85 (m, 2H), 7.19-7.27 (m, 1H), 7.69-7.77 (m, 1H), 7.88 (d, J=8.7 Hz, 1H), 7.93-7.97 (m, 1H)
Melting point: 175.0° C. to 178.0° C.
The compounds shown in Table 1 were obtained using the corresponding starting compounds and the procedures shown in Examples 1 to 28.
The compounds obtained in the Examples above are also shown in Table 1 together with the other compounds.
Using a human Edg-1 (S1P1) gene transferred HEK-293 cell strain membrane fraction, the Edg-1 (S1P1) binding inhibiting action of the compounds of the present invention was determined in accordance with the method described in the literature (Science. 2002, 296: 346) (showing a binding of Kd=0.15 nM, Bmax=2.5 fmol/μg to [33P]-S1P). The membrane fraction was obtained by treating the cells with a solubilizing buffer (1 mM Tris/HCl, pH 7.2) for 10 minutes on ice, centrifuging at 1000×g for 5 minutes to remove insoluble fractions, and then centrifuging at 40000×g for 30 minutes at 4° C. The resulting membrane fraction was dissolved in a binding buffer (20 mM Tris-HCl, pH 7.4, 100 mM NaCl, 15 mM NaF, 2 mM deoxypyridoxine, 4 mg/mL fatty acid-free BSA), and then [33P]-S1P (manufactured by ARC, final concentration 0.1 nM) and a DMSO solution (final concentration of the compound 10−5M, final concentration of DMSO 0.1%) of the test compound were added. Thereafter, the mixture was stirred and then treated for one hour at 30° C. Using a harvester, the membrane fraction was harvested onto unifilter-96 GF/C filter (manufactured by Perkin Elmer), washing was carried out four times with the binding buffer, and the filter was dried. Twenty five μL Microscint 0 (manufactured by Perkin Elmer) was added, and radioactivity was measured using Top Count NXT (manufactured by Packard) to calculate the amount (A) of [33P]-S1P bound to the membrane fraction at the time when the compound was added.
The same procedure was carried out in the absence of the test compound, and the amount (B) of [33P]-S1P bound was calculated. Further, the same procedure was carried out in the absence of the test compound by use of HEK-293 cells to which no Edg-1 (S1P1) gene was introduced, and the background amount (C) of [33P]-S1P bound was calculated.
The Edg-1 (S1P1) binding inhibition rates of the compound calculated using the following equation are shown in Table 1.
Inhibition rate (%)=[1−(A−C)/(B−C)]×100
Further, concentrations (IC50) at the time when binding in the absence of the test compound was inhibited by 50% were calculated. The membrane system binding assay was carried out in the presence of test compounds with various concentrations, and the Edg-1 (S1P1) binding inhibition rates were calculated using the equation above. Then, IC50 values were calculated using Origin (Lightstone Corp.), a software for data analysis.
The compounds below each had an IC50 value of 35 nM or lower and showed particularly strong activity.
Compounds 5, 13, 16, 18, 21, 23, 25, 26, 32, 35, 37, 43, 46, 64, 69, 76, 101, 102, 109, 122, 123, 125, 131, 134, 141, 142, 145, 665.
The following compounds had an IC50 value of 10 nM or below, and showed even stronger activity.
Compounds 24, 39, 40, 70, 75, 87, 93, 94, 107, 111, 112, 121, 132, 133, 137, 138, 139, 140, 147, 151, 663, 666, 667, 669, 671, 681, 683, 690.
Specific IC50 values of the individual compounds are as follows (unit: nM).
Compound 3: 4.2. Compound 7: 35.5. Compound 8: 18.5. Compound 10: 17.5. Compound 11: 8.9. Compound 12: 20.0. Compound 14: 6.4. Compound 15: 32.5. Compound 22: 14.0. Compound 28: 3.1. Compound 34: 2.0. Compound 36: 17.5. Compound 38: 11.7. Compound 42: 22.0. Compound 45: 4.2. Compound 46: 28.5. Compound 49: 6.0. Compound 61: 39.0. Compound 73: 2.2. Compound 74: 15.0. Compound 83: 8.1. Compound 88: 5.4. Compound 99: 25.0. Compound 100: 18.5. Compound 105: 2.9. Compound 108: 18.0. Compound 120:1.7. Compound 129: 20.0. Compound 130: 2.9. Compound 136: 8.1. Compound 143: 7.3. Compound 144: 7.9. Compound 146: 12.0. Compound 148: 1.9. Compound 149: 7.8. Compound 670: 5.2. Compound 678: 10.2. Compound 680:1.4. Compound 688: 1.5. Compound 691: 2.6. Compound 692: 5.1. Compound 694: 2.9. Compound 698: 2.3.
In Table 1, some of the compounds have two data on APCI MS (M−H)− and APCI MS (M+H)+, because two peaks were detected due to isotopes of a chlorine atom or a bromine atom.
For the compounds listed below, 1H-NMR data is shown.
Compound 100: (600 MHz, DMSO-d6) δ ppm: 1.21 (t, J=7.1 Hz, 3H) 1.27 (d, J=6.9 Hz, 3H) 3.22 (s, 6H) 3.40-3.50 (m, 8H) 3.77-3.93 (m, 2H) 4.68 (q, J=6.9 Hz, 1H) 6.34 (dd, J=7.3, 2.29 Hz, 1H) 6.52 (dd, J=8.3, 2.29 Hz, 1H) 6.56 (t, J=2.3 Hz, 1H) 7.12 (t, J=8.3 Hz, 1H) 7.70 (dd, J=8.3, 2.3 Hz, 1H) 7.85 (d, J=8.3 Hz, 1H) 7.92 (d, J=1.8 Hz, 1H) 8.66 (s, 1H).
Compound 119: (600 MHz, CDCl3) δ ppm: 1.34 (t, J=7.3 Hz, 3H), 1.50 (d, J=7.3 Hz, 3H), 3.89-3.98 (m, 2H), 4.59-4.65 (m, 1H), 5.06 (s, 2H) 6.37-6.42 (m, 1H), 6.80-6.95 (m, 2H), 7.01-7.04 (m, 1H), 7.24-7.36 (m, 2H), 7.36-7.44 (m, 4H), 7.49-7.53 (m, 1H), 7.67-7.73 (m, 1H), 7.93-7.96 (m, 1H).
Compound 127: (600 MHz, CDCl3) δ ppm: 1.38 (t, J=7.1 Hz, 3H), 1.49 (d, J=6.9 Hz, 3H), 2.41 (s, 3H), 3.93-4.02 (m, 2H), 4.59-4.65 (m, 1H), 5.47 (d, J=9.6 Hz, 1H), 7.05-7.10 (m, 2H), 7.31-7.37 (m, 3H), 7.61-7.64 (m, 1H), 7.80-7.82 (m, 1H).
Compound 129: (600 MHz, DMSO-d6) δ ppm: 1.21-1.29 (m, 6H), 2.29 (s, 6H), 3.83-4.01 (m, 2H), 4.61 (q, J=6.4 Hz, 1H), 6.43-6.47 (m, 1H), 6.89-6.93 (m, 1H), 7.34-7.40 (m, 3H), 7.52-7.60 (m, 3H), 8.24 (s, 1H), 11.18 (s, 1H).
Compound 130: (600 MHz, DMSO-d6) δ ppm: 1.22 (d, J=6.8 Hz, 3H), 1.26 (t, J=7.1 Hz, 3H), 3.87-4.02 (m, 2H), 4.70 (q, J=6.8 Hz, 1H), 6.43-6.45 (m, 1H), 6.77-6.80 (m, 1H), 7.28-7.30 (m, 1H), 7.36-7.38 (m, 1H), 7.50-7.53 (m, 1H), 7.67-7.75 (m, 2H), 7.83-7.86 (m, 1H), 8.04-8.07 (m, 1H), 8.12-8.19 (m, 2H), 8.45-8.47 (m, 1H), 8.52 (s, 1H), 11.16 (s, 1H).
Compound 131: (600 MHz, DMSO-d6) δ ppm: 1.28 (t, J=7.1 Hz, 3H), 1.35 (d, J=6.9 Hz, 3H), 2.36 (s, 3H), 3.89-4.03 (m, 2H), 4.64-4.72 (m, 1H), 6.44-6.46 (m, 1H), 6.87-6.90 (m, 1H), 7.36-7.38 (m, 2H), 7.53-7.57 (m, 1H), 7.82-7.84 (m, 1H), 7.88-7.91 (m, 1H), 8.77 (s, 1H), 11.18 (s, 1H).
Compound 132: (600 MHz, DMSO-d6) δ ppm: 1.23-1.31 (m, 6H), 2.39 (s, 3H), 3.85-4.02 (m, 2H), 4.69 (q, J=6.9 Hz, 1H), 6.43-6.47 (m, 1H), 6.88-6.92 (m, 1H), 7.36-7.39 (m, 2H), 7.53-7.60 (m, 2H), 7.64-7.68 (m, 1H), 7.77-7.80 (m, 1H), 8.51 (s, 1H), 11.18 (s, 1H).
Compound 134: (600 MHz, DMSO-d6) δ ppm: 1.29 (t, J=7.3 Hz, 3H), 1.36 (d, J=6.9 Hz, 3H), 3.89-4.05 (m, 2H), 4.67-4.73 (m, 1H), 6.44-6.46 (m, 1H), 6.86-6.90 (m, 1H), 7.35-7.39 (m, 2H), 7.54-7.57 (m, 1H), 7.83-7.88 (m, 1H), 7.91-7.94 (m, 1H), 9.01 (s, 1H), 11.17 (s, 1H).
Compound 136: (600 MHz, DMSO-d6) δ ppm: 1.23-1.31 (m, 6H), 3.85-4.02 (m, 2H), 4.72 (q, J=6.9 Hz, 1H), 6.44-6.47 (m, 1H), 6.87-6.91 (m, 1H), 7.34-7.39 (m, 2H), 7.52-7.57 (m, 1H), 7.97-8.05 (m, 4H), 8.74 (s, 1H), 11.17 (s, 1H).
Compound 150; (200 MHz, CDCl3) δ ppm: 0.94 (d, J=6.4 Hz, 3H), 0.97 (d, J=6.4 Hz, 3H), 1.30 (t, J=7.3 Hz, 3H), 2.00-2.20 (m, 1H), 2.37 (s, 3H), 3.70-3.88 (m, 2H), 4.10 (dd, J=6.9, 9.4 Hz, 1H), 6.71 (d, J=9.4 Hz, 2H), 7.12-7.22 (m, 4H), 7.40 (d, J=8.4 Hz, 1H), 7.65 (dd, J=2.2, 8.4 Hz, 1H), 7.84 (d, J=2.2 Hz, 1H).
Compound 668: (600 MHz, DMSO-d6) ppm: 1.19-1.25 (m, 6H), 2.22 (s, 3H), 2.41-2.46 (m, 4H), 2.49-2.54 (m, 3H), 3.11-3.17 (m, 4H), 3.83-3.99 (m, 2H), 4.65-4.71 (m, 1H), 6.47-6.51 (m, 1H), 6.77-6.82 (m, 2H), 7.17-7.22 (m, 1H), 7.51-7.55 (m, 1H), 7.77-7.84 (m, 2H), 8.01-8.10 (m, 2H), 8.38-8.51 (m, 2H).
Compound 671: (200 MHz, CDCl3) δ ppm: 0.89 (t, J=7.5 Hz, 3H), 1.23 (t, J=7.3 Hz, 3H), 1.70-2.06 (m, 2H), 2.42 (s, 3H), 2.66 (bs, 4H), 3.29 (t, J=5.1 Hz, 4H), 3.68-3.92 (m, 2H), 4.38 (dd, J=7.0, 15.4 Hz, 1H), 6.50 (bs, 1H), 6.56 (dd, J=2.0, 8.1 Hz, 1H), 6.72 (dd, J=2.0, 8.4 Hz, 1H), 6.89 (t, J=2.0 Hz, 1H), 7.20 (t, J=8.4 Hz, 1H), 7.46 (t, J=8.1 Hz, 1H), 7.69 (d, J=8.0 Hz, 1H), 7.80 (d, J=8.0 Hz, 1H), 7.94 (d, J=2.0, 9.0 Hz, 1H), 8.28 (d, J=9.0 Hz, 1H), 8.4 (d, J=2.0 Hz, 1H).
Compound 672: (200 MHz, CDCl3) δ ppm: 1.33 (t, J=7.3 Hz, 3H), 1.49 (d, J=6.8 Hz, 3H), 2.41 (s, 3H), 2.57-2.70 (m, 4H), 3.16-3.33 (m, 6H), 3.91 (q, J=7.3 Hz, 2H), 4.52-4.69 (m, 3H), 5.08 (d, J=9.0 Hz, 1H), 6.73 (dd, J=2.2, 8.6 Hz, 2H), 6.81 (d, J=9.0 Hz, 1H), 6.97 (t, J=2.2 Hz, 1H), 7.23 (t, J=8.1 Hz, 1H), 7.62-7.68 (m, 2H).
Compound 673: (200 MHz, CDCl3) δ ppm: 1.31 (t, J=7.0 Hz, 3H), 1.33 (s, 6H), 1.49 (d, J=7.0 Hz, 3H), 1.80 (t, J=6.6 Hz, 2H), 2.39 (s, 3H), 2.59 (t, J=5.0 Hz, 4H), 2.79 (t, J=7.0 Hz, 2H), 3.25 (t, J=5.0 Hz, 4H), 3.90 (q, J=7.0 Hz, 2H), 4.48-4.65 (m, 1H), 5.07 (d, J=9.5 Hz, 1H), 6.73 (dd, J=2.4, 8.1 Hz, 2H), 6.82 (d, J=9.2 Hz, 1H), 6.97 (t, J=2.4 Hz, 1H), 7.23 (t, J=8.1 Hz, 1H), 7.51-7.57 (m, 2H).
Compound 674: (200 MHz, CDCl3) δ ppm: 1.34 (t, J=7.3 Hz, 3H), 1.49 (d, J=6.8 Hz, 3H), 2.21 (quint, J=6.0 Hz, 2H), 2.37 (s, 3H), 2.59 (t, J=4.6 Hz, 4H), 3.25 (t, J=4.6 Hz, 4H), 3.93 (q, J=7.3 Hz, 2H), 4.27 (dd, J=6.0, 11.6 Hz, 4H) 4.51-4.66 (m, 1H), 5.15 (d, J=9.5 Hz, 1H), 6.74 (dd, J=2.2, 8.4 Hz, 1H), 7.07-7.13 (m, 2H), 7.23 (t, J=8.1 Hz, 1H), 7.38 (dd, J=2.4, 8.1 Hz, 1H), 7.43 (d, J=2.0 Hz, 1H).
Compound 675: (200 MHz, CDCl3) δ ppm: 1.36 (t, J=7.3 Hz, 3H), 1.49 (d, J=6.8 Hz, 3H), 2.39 (s, 3H), 2.59 (t, J=5.0 Hz, 4H), 3.26 (t, J=5.0 Hz, 4H), 3.95 (q, J=7.3 Hz, 2H), 4.50-4.68 (m, 1H), 5.18 (d, J=9.5 Hz, 1H), 6.05 (s, 2H), 6.74 (dd, J=2.4, 8.1 Hz, 2H), 6.86 (d, J=8.4 Hz, 1H), 6.98 (t, J=2.4 Hz, 1H), 7.19-7.27 (m, 2H), 7.42 (dd, J=1.8, 8.1 Hz, 1H).
Compound 676: (200 MHz, CDCl3) δ ppm: 1.27-1.33 (m, 15H), 1.47 (d, J=6.8 Hz, 3H), 2.43 (s, 3H), 2.61-2.72 (m, 4H), 3.25-3.33 (m, 4H), 3.90 (q, J=7.5 Hz, 2H), 4.57 (dd, J=6.8, 9.2 Hz, 1H), 5.13 (d, J=9.2 Hz, 1H), 6.70-6.79 (m, 2H), 6.99 (t, J=2.2 Hz, 1H), 7.22 (t, J=8.1 Hz, 1H), 7.41 (d, J=8.6 Hz, 1H), 7.57 (dd, J=2.0, 8.1 Hz, 1H), 7.79 (d, J=2.0 Hz, 1H).
Compound 677: (200 MHz, CDCl3) δ ppm: 1.32 (t, J=7.3 Hz, 3H), 1.49 (d, J=6.8 Hz, 3H), 2.22 (s, 3H), 2.38 (s, 3H), 2.56-2.63 (m, 4H), 3.14-3.30 (m, 6H), 3.84-4.10 (m, 4H), 4.53-4.64 (m, 1H), 5.25 (d, J=9.5 Hz, 1H), 6.71-6.79 (m, 2H), 7.01 (t, J=2.4 Hz, 1H), 7.22 (t, J=8.4 Hz, 1H), 7.57 (s, 1H), 7.69 (dd, J=2.0, 8.4 Hz, 1H), 8.27 (d, J=8.4 Hz, 1H).
Compound 678: (200 MHz, CDCl3) δ ppm: 1.32 (t, J=7.3 Hz, 3H), 1.46 (d, J=6.8 Hz, 3H), 2.11 (quint, J=7.5 Hz, 2H), 2.36 (s, 3H), 2.58 (t, J=5.0 Hz, 4H), 2.94 (t, J=7.5 Hz, 4H), 3.25 (t, J=5.0 Hz, 4H), 3.92 (q, J=7.3 Hz, 2H), 4.52-4.67 (m, 1H), 5.15 (d, J=10.0 Hz, 1H), 6.73 (dd, J=2.2, 8.1 Hz, 2H), 6.98 (t, J=2.2 Hz, 1H), 7.22 (t, J=7.9 Hz, 1H), 7.31 (d, J=8.1 Hz, 1H), 7.62 (dd, J=2.2, 7.9 Hz, 1H), 7.67 (s, 1H).
Compound 679: (600 MHz, DMSO-d6) δ ppm; 1.24 (t, J=7.1 Hz, 3H), 1.29 (d, J=6.9 Hz, 3H), 2.22 (s, 3H), 2.40-2.46 (m, 4H), 3.12-3.16 (m, 4H), 3.81-3.97 (m, 2H), 4.64-4.72 (m, 1H), 6.53-6.58 (m, 1H), 6.60-6.65 (m, 1H), 6.77-6.82 (m, 2H), 7.20 (t, J=8.3 Hz, 1H), 7.60 (d, J=8.7 Hz, 1H), 7.94-7.99 (m, 1H), 8.17-8.23 (m, 2H), 8.54-8.61 (m, 1H).
Compound 698: (600 MHz, CDCl3) δ ppm: 1.33 (t, J=7.1 Hz, 3H), 1.43 (d, J=6.9 Hz, 3H), 2.11 (s, 3H), 3.10-3.20 (m, 4H), 3.53-3.59 (m, 2H), 3.67-3.74 (m, 2H), 3.89-4.00 (m, 2H), 4.67 (q, J=7.1 Hz, 1H), 6.65-6.75 (m, 2H), 6.94-6.97 (m, 1H), 7.21-7.25 (m, 1H), 7.46-7.50 (m, 1H), 7.69-7.73 (m, 1H), 7.80-7.84 (m, 1H), 7.95-7.99 (m, 1H), 8.29-8.34 (m, 1H), 8.45-8.47 (m, 1H).
The following describes exemplary methods of preparing starting materials used to produce the compounds of the present application.
Starting from the corresponding amine in place of 1,4-dioxa-8-azaspiro[4,5]decane used in Example 7-(1), the same procedure as used in Example 7-(1) was repeated to give the titled compounds.
Brown oily substance, yield 71%
1H NMR (600 MHz, CDCl3) δ ppm: 1.24 (d, J=6.0 Hz, 6H), 2.36-2.45 (m, 2H), 3.37-3.46 (m, 2H), 3.73-3.83 (m, 2H), 5.01 (s, 1H), 6.28-6.33 (m, 1H), 6.36-6.38 (m, 1H), 6.46-6.51 (m, 1H), 7.10 (t, J=8.0 Hz, 1H)
Yellow oily substance, yield 12%
1H NMR (600 MHz, CDCl3) δ ppm: 2.29 (s, 6H), 2.48-2.57 (m, 4H), 2.57-2.64 (m, 4H), 3.11-3.16 (m, 4H), 6.24-6.30 (m, 1H), 6.32-6.37 (m, 1H), 6.42-6.49 (m, 1H), 7.04-7.09 (m, 1H)
Brown oily substance, yield 42%
1H NMR (600 MHz, CDCl3) δ ppm: 2.27 (s, 6H), 2.44-2.50 (m, 2H), 2.87 (s, 3H), 3.37-3.44 (m, 2H), 6.09-6.16 (m, 2H), 6.19-6.24 (m, 1H), 7.01 (t, J=8.0 Hz, 1H)
Acetone (1.95 g) and NaBH(OAc)3 (7.12 g) were added to a solution of 3-piperazin-1-yl-phenol (2.00 g) in THF (40 ml), and the mixture was stirred at room temperature for 18 hours. Saturated aqueous sodium bicarbonate was added to the reaction solution, and the mixture was extracted with ethyl acetate. The organic layer was dried (MgSO4) and filtered to give the titled compound (1.48 g, colorless powder).
1H NMR (600 MHz, CDCl3) δ ppm: 1.11 (d, J=6.4 Hz, 6H), 2.68-2.72 (m, 4H), 2.71-2.78 (m, 1H), 3.15-3.23 (m, 4H), 6.28-6.32 (m, 1H), 6.36 (t, J=2.3 Hz, 1H), 6.50 (dd, J=8.3, 2.3 Hz, 1H), 7.09 (t, J=8.3 Hz, 1H)
Starting from 3-piperidin-4-yl-phenol in place of 3-piperazin-1-yl-phenol used in Reference Example 4, the same procedure as used in Reference Example 4 was repeated to give the titled compound (yield 31%, colorless powder).
1H NMR (600 MHz, CDCl3) δ ppm: 1.16 (d, J=6.4 Hz, 6H), 1.76-1.86 (m, 2H), 1.91-2.01 (m, 2H), 2.31-2.50 (m, 3H), 2.92-3.02 (m, 1H), 3.08-3.19 (m, 2H), 6.66-6.72 (m, 2H), 6.74-6.79 (m, 1H), 7.11 (t, J=7.8 Hz, 1H)
(1) A suspension of 3-chloro-4-fluorophenol (2.00 g), benzyl chloride (1.88 ml), and potassium carbonate (2.82 g) in dimethylformamide (10 ml) was stirred at room temperature for three hours. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated aqueous sodium chloride, dried (MgSO4), filtered, and concentrated, and the resulting residue was purified by silica-gel column chromatography (OH SiO2, AcOEt/hexane=0-10%) to give the titled compound (2.00 g) as a light yellow oily substance.
1H NMR (600 MHz, CDCl3) δ ppm: 5.01 (s, 2H), 6.77-6.86 (m, 1H), 6.96-7.09 (m, 2H), 7.30-7.46 (m, 5H)
(2) Under an argon atmosphere at room temperature, the compound (7.5 g) obtained in Reference Example 6-(1) and thereafter a solution of 2,8,9-triisobutyl-2,5,8,9-tetraaza-1-1 phosphino-bicyclo[3,3,3]-undecane (1.1 g) in toluene (320 ml) were added to tris dibenzylidenedipalladium (1.45 g) and t-butoxysodium (4.26 g). Then, a solution of N-methylpiperazine (1.02 g) in toluene (20 ml) was added at room temperature, and the mixture was stirred at 100° C. for 60 hours. The reaction mixture was concentrated, and the resulting residue was purified by silica-gel column chromatography (NH SiO2, AcOEt/hexane=0-30%) to give the titled compound (2.27 g) as a yellow oily substance.
1H NMR (600 MHz, CDCl3) δ ppm: 2.35 (s, 3H), 2.55-2.63 (m, 4H), 3.06-3.15 (m, 4H), 5.00 (s, 2H), 6.46-6.51 (m, 1H), 6.56-6.59 (m, 1H), 6.89-6.95 (m, 1H), 7.29-7.45 (m, 5H)
(3) A suspension of the compound (2.48 g) obtained in Reference Example 6-(2) and palladium hydroxide (10%, 250 mg) in methanol (30 ml) was stirred under a hydrogen atmosphere at 65° C. for two hours and a half and thereafter at room temperature for overnight. The reaction solution was filtered through celite, and the filtrate was concentrated. The resulting residue was purified by silica-gel column chromatography (NH SiO2, AcOEt/hexane=0-99%, methanol/chloroform=0-10%). Thereafter, the resulting compound was purified again by silica-gel column chromatography (OH SiO2, methanol/chloroform=0-10%) to give the titled compound (877 mg) as an ocher solid.
1H NMR (600 MHz, DMSO-d6) δ ppm: 2.21 (s, 3H), 2.39-2.48 (m, 4H), 2.89-2.99 (m, 4H), 6.26-6.31 (m, 1H), 6.35-6.39 (m, 1H), 6.84-6.91 (m, 1H), 9.20 (s, 1H)
The following describes an exemplary method of producing an intermediate represented by Formula (II) of the present application.
Starting from the corresponding starting materials, the same procedures as shown in Examples 1-(1) to 1-(7), Examples 2-(1) and 2-(2), Examples 7-(1) and 7-(2), Examples 17-(1) and 17-(2), Example 18-(1), Example 21-(1), Example 22-(1), Example 23-(1), and Examples 26-(1) to 26-(8) were repeated, followed by salt formation as needed to obtain compounds or salts of the compounds which are intermediates useful in producing the compound of Formula (I) of the present application. The resulting intermediates are shown in Table 2 together with the intermediates obtained in the Examples above.
1H NMR
Since the compounds of the present invention are excellent Edg-1(S1P1) ligands, they are useful as agents for treating or preventing autoimmune diseases, such as Crohn disease, hypersensitivity colitis, Sjogren's syndrome, multiple sclerosis, and systemic lupus erythematosus, and diseases such as rheumatoid arthritis, asthma, atopic dermatitis, organ transplant rejection, cancer, retinopathy, psoriasis, osteoarthritis, and age-related macular degeneration.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2006-027799 | Feb 2006 | JP | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/JP2007/051951 | 2/5/2007 | WO | 00 | 8/1/2008 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2007/089018 | 8/9/2007 | WO | A |
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