‘Counter-intuitive’ regioselectivity, subtle steric and solvation effects in lithiation of cyclic tertiary aralkylamines
摘要:
Lithiation of a series of cyclic aralkyl tertiary amines with sec-BuLi in various solvents has been studied. There is a subtle sensitivity to steric factors and lithium coordinating solvents/additives have an adverse effect. ortho-Lithiation is observed only in the case of an eight-membered cyclic amine and the ease of benzylic lithiation with respect to nitrogen is in the surprising order gamma > beta >> alpha, delta. These observations are discussed in the context of nitrogen coordination promoted lithiation. (c) 2005 Elsevier Ltd. All rights reserved.
A set of GluN2B NMDAreceptorantagonists with conformationally restricted phenylethylamine substructure was prepared and pharmacologicallyevaluated. The phenylethylamine substructure was embedded in ring expanded 3-benzazocines 4 as well as ring-contracted tetralinamines 6 and indanamines 7. The ligands 4, 6 and 7 were synthesized by reductive alkylation of secondary amine 11, reductive amination
It is an object to provid a novel compound that has an excellent T-type calcium channel inhibitory activity and is specifically useful for prevention or treatment of pain, chronic kidney disease and atrial fibrillation. The present invention provides a novel triazinone compound of Formula (I):
where each substituent in the formula is defined in detail in the description, and R1 means a hydrogen atom, or a C1-6 alkyl group, etc., E means a 7 to 14-membered non-aromatic fused heterocyclic group, L3 means a C1-6 alkylene group, etc., D means a C6-14 aryyl group or a 5 to 10-membered heteroaryl group each of which is optionally substituted, etc., a tautomer of the compound, or a pharmaceutically acceptable salt thereof, or a solvate thereof.
Preventives and remedies for central nervous system diseases
申请人:——
公开号:US20030207863A1
公开(公告)日:2003-11-06
A prophylactic or therapeutic agent for central nervous system diseases based on amyloid &bgr;40 secretion inhibitory activity of a compound having urotensin II receptor antagonistic activity or a salt thereof.
Agents and crystals for improving excretory potency of urinary bladder
申请人:——
公开号:US20020177593A1
公开(公告)日:2002-11-28
Agents for improving potentcy of the urinary bladder which comprises an amine compound of non-carbamate-type having an acetylcholinesterase-inhibiting action. Particularly, crystals of a tricyclic, condensed, heterocyclic derivative are provided, which possess an excellent action to inhibit acetylcholine esterase and an action to improve the excretory potency of urinary bladder. As an example, crystals of of 8-[3-[1-[(3-fluorophenyl)-methyl]-4-piperidinyl]-1-oxopropyl]-1,2,5,6-tetrahydro-4H-pyrrolo[3,2,1-ij]quinolin-4-one or a salt thereof and pharmaceutical compositions containing them are disclosed.
Agents for improving excretory potency of urinary bladder
申请人:——
公开号:US20040116457A1
公开(公告)日:2004-06-17
Agents for improving excretory potency of the urinary bladder which comprises an amine compound of non-carbamate-type having an acetylcholinesterase-inhibiting action.