Synthesis of oxepine-, oxocine- and azepine-annulated carbazole derivatives by combined Claisen rearrangement and diene/enyne metathesis
摘要:
A new route to various medium ring heterocycle-annulated tetra-, penta- and hexacyclic carbazole derivatives has been developed using successive applications of three atom economic processes, viz. Claisen rearrangement, olefin metathesis and Diels-Alder reactions. (c) 2006 Elsevier Ltd. All rights reserved.
Abstract A new protocol based on sequential applications of Claisen rearrangement, olefin isomerisation, ring-closing diene/ enyne metathesis and Diels–Alder reaction has been developed to access pyrano[3,2-a]carbazole and annulated derivatives thereof. A new protocol based on sequential applications of Claisen rearrangement, olefin isomerisation, ring-closing diene/ enyne metathesis and Diels–Alder
摘要 已经开发了一种基于克莱森重排,烯烃异构化,闭环二烯/烯炔复分解和Diels-Alder反应的顺序应用的新方案,以访问吡喃并[3,2- a ]咔唑及其环状衍生物。 已经开发了一种基于克莱森重排,烯烃异构化,闭环二烯/烯炔复分解和Diels-Alder反应的顺序应用的新方案,以访问吡喃并[3,2- a ]咔唑及其环状衍生物。
Synthesis and biological evaluation of novel propylamine derivatives as orally active squalene synthase inhibitors
Squalenesynthaseinhibitors are potentially superior hypolipidemic agents. We synthesized novel propylamine derivatives, as well as evaluated their ability to inhibitsqualenesynthase and their lipid-lowering effects in rats. 1-Allyl-2-[3-(benzylamino)propoxy]-9H-carbazole (YM-75440) demonstrated potent inhibition of the enzyme derived from HepG2 cells with an IC(50) value of 63 nM. It significantly