Synthesis of 18R-hydroxy-epiallo-yohimbines from (−)-3-iso-19,20-dehydro-β-yohimbine: an enantiospecific route to deserpidine and reserpine analogues from secologanin
Synthesis of 18R-hydroxy-epiallo-yohimbines from (−)-3-iso-19,20-dehydro-β-yohimbine: an enantiospecific route to deserpidine and reserpine analogues from secologanin
Synthesis of 18R-hydroxy-epiallo-yohimbines from (−)-3-iso-19,20-dehydro-β-yohimbine: an enantiospecific route to deserpidine and reserpine analogues from secologanin
作者:Falmai Binns、Richard T Brown、Bukar E.N Dauda
DOI:10.1016/s0040-4039(00)00913-8
日期:2000.7
(-)-3-Iso-19,20-dehydro-beta-yohimbine has been converted into epiallo-yohimbines and, via a novel regioand stereoselective hydration, into the 18R-hydroxy derivative, an analogue of deserpidine. Its 11-methoxy derivative, also prepared from secologanin, is a potential precursor for a reserpine analogue. (C) 2000 Elsevier Science Ltd. All rights reserved.