Oxidative Cyclization Reactions of Trienes and Dienynes: Total Synthesis of Membrarollin
作者:Claire L. Morris、Yulai Hu、Geoff D. Head、Lynda J. Brown、William G. Whittingham、Richard C. D. Brown
DOI:10.1021/jo802012a
日期:2009.2.6
alkene geometry and methodology for the closure of the second ring. The threo-cis-threo-cis-erythro stereochemical arrangement is embodied within the bis-THF core units of a number of Annonaceous acetogenins including membrarollin, while trilobacin has a threo-cis-erythro-trans-threo configured core. As an application of the selective oxidative cyclization approach, a totalsynthesis of membrarollin was
New method for the determination of the absolute stereochemistry in antitumoral annonaceous acetogenins
作者:M. Carmen González、Catherine Lavaud、Teresa Gallardo、M. Carmen Zafra-Polo、Diego Cortes
DOI:10.1016/s0040-4020(98)00301-9
日期:1998.5
several acetogenins were determined through p-bromophenylurethane derivatives and subsequent Mosher ester methodology. This method has been applied on α,α′-dihydroxylated adjacent bis-THF acetogenins with a threo/cis/threo/cis/erythro relative configuration membrarollin (1), a new acetogenin isolated from Rollinia membranacea seeds, rollimembrin (2), membranacin (3) and rolliniastatin-1 (4), and a th