Stereoselective Synthesis of Optically Active 3-Hydroxy-7,8-dihydro-.BETA.-ionol-glucosides
作者:Yumiko Yamano、Yuka Shimizu、Masayoshi Ito
DOI:10.1248/cpb.51.878
日期:——
A stereocontrolled synthesis of optically active beta-D-glucopyronosides 6a, b and 11a, b was accomplished via the 7,8-saturated alcohols 4a, b, efficiently prepared by an asymmetric transfer hydrogenation of the alpha,beta-acetylenic ketone 1 and subsequent catalytic hydrogenation. Simultaneous separation of these four glucosides by HPLC was also performed. This work is useful not only in order to
经由7,8-饱和醇4a,b完成立体活性的旋光性β-D-吡喃葡萄糖苷6a,b和11a,b的立体控制合成,所述醇通过α,β-炔基酮1的不对称转移氢化和随后的反应有效地制备催化氢化。还通过HPLC同时分离了这四种葡糖苷。这项工作不仅可用于确认植物中痕量糖苷的立体化学,而且可用于阐明其生物合成。