Stereoselective conversion of valienamine and validamine into valiolamine
作者:Satoshi Horii、Hiroshi Fukase、Yukihiko Kameda
DOI:10.1016/0008-6215(85)85122-3
日期:1985.7
Abstract Methods are described for the stereoselectiveconversion of valienamine ( 2 ) and validamine ( 3 ) into valiolamine ( 1a ), a new pseudo-amino sugar isolated from the fermentation broth of Streptomyces hygroscopicus subsp. limoneus and which is a stronger α- d -glucosidase inhibitor than 2 and 3 . Treatment of the acyclic carbamates ( 4 ) of 2 with halogenation reagents led to ring closure