作者:Byeang Hyean Kim、Patricia B. Jacobs、Richard L. Elliott、Dennis P. Curran
DOI:10.1016/s0040-4020(01)85940-8
日期:1988.1
A general approach to the synthesis of iridoid aglycones is reported. A combination Claisen rearrangement/nitrile oxide cycloaddition sequence has permitted the facile annulation of a highly functionalized cyclopentane ring onto a simple glycal derived from D-xylal. The title aglycones have been prepared and the work has culminated with a stereoselective total synthesis of (-)-specionin. Two other
报道了合成烯类环糊精糖苷配基的一般方法。克莱森重排/一氧化氮环加成序列的组合已允许将高度官能化的环戊烷环轻松地环环到衍生自D-xylal的简单糖基上。已经制备了标题糖苷配基,并且该工作以立体选择性全合成(-)-specionin达到了高潮。还已经独立制备了血红蛋白的另外两个端基异构体。这项工作证实了Vandewalle对specionin的相对立体化学作用,也证实了该化合物的绝对立体化学。