New thiazole derivatives as potent and selective 5-hydroxytriptamine 3 (5-HT 3 ) receptor agonists for the treatment of constipation
摘要:
The syntheses and biological evaluation of a series of novel indeno[1,2-d]thiazole derivatives are described. Several groups reported 5-HT3 receptor agonists which were mainly evaluated for their activities on the von Bezold-Jarisch reflex (B-J reflex). We discovered that tetrahydrothiazolopyridine derivative 1b had a contractile effect on the isolated guinea pig colon with weak B-J reflex. Our efforts to find a new type of 5-HT3 receptor agonists on the isolated guinea pig colon focused on the synthesis of a fused thiazole derivative 1d modified from 1b and reverse-fused thiazole derivatives (7-10). In this series, 10f (YM-31636) showed high affinity and selectivity for the cloned human 5-HT3 receptor; furthermore, it showed potent and selective 5-HT3 receptor agonistic activity. YM-31636 was examined for its effects on defecation in animals, thus evaluating the compound as an agent against constipation. (C) 2003 Elsevier Science Ltd. All rights reserved.
Nonpeptide Arginine Vasopressin Antagonists for Both V1A and V2 Receptors: Synthesis and Pharmacological Properties of 4'-(1,4,5,6-Tetrahydroimidazo[4,5-d][1]benzoazepine-6-carbonyl)benzanilide Derivatives and 4'-(5,6-Dihydro-4H-thiazolo[5,4-d][1]benzoazepine-6-carbonyl)benzanilide Derivatives.
4,5,6-tetrahydroimidazo[4,5-d][1]benzoazepine-6- carbonyl)benzanilide and 4'-(5,6-dihydro-4H- thiazolo[5,4-d][1]benzoazepine-6-carbonyl)benzanilide were synthesized and examined for AVP antagonist activity for both V1A and V2 receptors. As a result, it was found that the 4'-(1,4,5,6-tetrahydroimidazo[4,5-d][1]benzoazepine-6-carbon yl)-2- phenylbenzanilide derivatives showed potent binding affinity
5-HT.sub.3 receptor agonist, novel thiazole derivative and intermediate
申请人:Yamanouchi Pharmaceutical Co., Ltd.
公开号:US05834499A1
公开(公告)日:1998-11-10
A 5-HT.sub.3 receptor against containing a thiazole derivative as the effective ingredient is provided and is represented by the Formula (I): ##STR1## wherein the A ring is substituted or unsubstituted and represents a benzene or a heterocyclic ring with one or two heteroatoms; one of L.sub.1 or L.sub.2 represents a single bond and the other is non-existent or represents an alkylene or alkenylene group; R represents: ##STR2##
5-HT 3 RECEPTOR AGONIST, NOVEL THIAZOLE DERIVATIVE, AND INTERMEDIATE THEREFOR
申请人:YAMANOUCHI PHARMACEUTICAL CO. LTD.
公开号:EP0749966A1
公开(公告)日:1996-12-27
A 5-HT3 receptor agonist containing a thiazole derivative represented by general formula (I) as the effective ingredient; a specified compound useful as a 5-HT3 receptor agonist; and a specified thioamide derivative useful as an intermediate therefor.
wherein each symbol represents the following meaning:
Ring A: the following ring which may be substituted by one or more substituents selected from the group consisting of a halogen atom, a lower alkyl group and a lower alkoxyl group:
1) a benzene ring, or
2) a 5-membered or 6-membered unsaturated heterocyclic ring having one or two hetero atoms selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom,
L1 and L2: one of them represents a single bond, and the other one represents non-existence, or an alkylene group having 1 to 4 carbon atoms or an alkenylene group having 2 to 5 carbon atoms,
R: a group represented by one of the following formulae:
L3: a lower alkylene group,
L4: a single bond or a lower alkylene group,
R1 and R2: the same or different and individually a hydrogen atom, a lower alkyl group or an amino-protecting group,
R3: a hydrogen atom, a lower alkyl group, an oxo group or a protected or unprotected amino group,
R4: non-existence or a hydrogen atom, a lower alkyl group, an aralkyl group or an amino-protecting group,
Ring B: the following monocyclic or bicyclic ring which may contain an oxygen atom:
1) a nitrogen-containing saturated heterocyclic ring having 4 to 16 ring-forming atoms, or
2) a nitrogen-containing heterocyclic ring having one unsaturated bond and 4 to 16 ring-forming atoms, and
Ring D: a saturated carbon ring having 4 to 8 ring-forming atoms,
Intermediate for condensed benzazepine derivatives
申请人:YAMANOUCHI PHARMACEUTICAL CO., LTD.
公开号:EP1097920A1
公开(公告)日:2001-05-09
(Biphenyl-2-ylcarboxamide)benzoic acid is useful on an intermediate for the synthesis of condensed benzazepine derivatives which are arginine vasopressin antagonists.