Thiazolidinedione derivatives, their production and use
申请人:Takeda Chemical Industries, Ltd.
公开号:US05489602A1
公开(公告)日:1996-02-06
The object of the present invention is to provide a new thiazolidinedione derivative exhibiting excellent hypoglycemic and hypolipidemic action. Thiazolidinedione derivative represented by the general formula: ##STR1## wherein n represents an integer from 1 to 3; A represents an aromatic 5-membered heterocyclic ring residue which has at least one nitrogen atom as a ring component atom, which is bound via a carbon atom adjacent to the nitrogen atom and which may be substituted; .cndot..cndot..cndot..cndot..cndot..cndot..cndot..cndot. is a single bond or a double bond, or pharmacologically acceptable salt thereof, is novel, and shows excellent hypoglycemic and hypolipidemic action.
basicity at carboxyl oxygen were examined in the context of intramoleculargeneral-basecatalysis (igbc) of enolization of ketones. Molecules synthesized from Kemp triacid units and xanthene-1,8-dicarboxylic acid were constructed in such a way that the more basic syn lone pair of a carboxylate is directed toward the α-hydrogen of an enolizable ketone. For the Kemp triacid molecules, in which an 11 1/2-membered
Neber; Uber, Justus Liebigs Annalen der Chemie, 1928, vol. 467, p. 54,62
作者:Neber、Uber
DOI:——
日期:——
A simple and one-pot synthesis of 2,3,4,5-tetrasubstituted 4,5-dihydro-3H-1,4-benzodiazepines
作者:Ying Wang、Min Chen、Ming-Wu Ding
DOI:10.1016/j.tet.2013.08.034
日期:2013.10
2,3,4,5-Tetrasubstituted 4,5-dihydro-3H-1,4-benzodiazepines were synthesized in one-pot by a new sequential Ugi 4CC/Staudinger/aza-Wittig reaction, starting from easily accessible o-azidobenzaldehyde, alpha-amino ketone hydrochloride, isocyanide and carboxylic acid. (C) 2013 Elsevier Ltd. All rights reserved.