作者:Peter A.V. van Hooft、Michiel A. Leeuwenburgh、Herman S. Overkleeft、Gijsbert A. van der Marel、Constant A.A. van Boeckel、Jacques H. van Boom
DOI:10.1016/s0040-4039(98)01247-7
日期:1998.8
A three-step approach to chiral pyranose [5,4], [5,5], [5,6] and [5,7] unsaturated spiroacetal derivatives from perbenzylated glucopyranolactone 1 is presented. The strategy involves Grignard addition of vinyl or allyl magnesium bromide to 1 to give 2 and 12, respectively, K-10 mediated glucosidation of different terminal alkenols with 2 and 12 followed by ring-closing metathesis. (C) 1998 Elsevier Science Ltd. All rights reserved.