A polyazaheterocycle compound of the formula: ##STR1## or a pharmaceutically acceptable salt thereof, wherein each symbol is as defined in the specification. Said compounds exhibit calcium antagonistic and/or calcium agonistic activities.
The Hantzsch Synthesis with 6-Aminouracils: One Step Synthesis of Pyrido[2,3-d]pyrimidines
作者:Masahiro Kajino、Kanji Meguro
DOI:10.3987/com-90-5554
日期:——
A one-step synthesis of new pyrido [2,3-d]pyrimidine derivatives (III) was achieved through the Hantzsch synthesis using 6-aminouracils (I) as enamine nucleophiles.
IKCa-channel blockers. Part 2: Discovery of cyclohexadienes
Novel cyclohexadienes have been identified as potent and specific IKCa-channel blockers. In this communication we describe their synthesis as well as their chemical and biological properties. A selected derivative is being enriched in rat brain and reduces the infarct volume, intracranial pressure as well as the water content in a rat subdural hematoma model of traumatic brain injury after iv administration. (C) 2004 Elsevier Ltd. All rights reserved.
Carba-Hantzsch Synthesis of Cyclohexadiene- and Biphenylcarboxylic Esters
作者:Klaus Urbahns、Dieter Kieck、Axel Göhrt
DOI:10.1055/s-1998-2215
日期:1998.12
Acid catalyzed ring closure reactions of electrophilic alkenes
作者:Roland Verhé、Norbert de Kimpe、Dirk Courtheyn、Laurent de Buyck、Niceas Schamp
DOI:10.1016/0040-4020(82)80073-2
日期:1982.1
3-acyl-2-alkyl-4,5-dihydrofurans. Similar cyclization of α-acyl-α,β-unsaturated esters initially afforded 3-alkoxycarbonyl-2-alkyl-4,5-dihydrofurans which were transformed into 2-acylbutanolides on further reaction with sulfuric acid.