Stereocontrolled routes to cis-hydroxyamino sugars, part VII: synthesis of daunosamine and ristosamine
作者:Henry W. Pauls、Bert Fraser-Reid
DOI:10.1016/0008-6215(86)80009-x
日期:1986.8
The nitrogen of an allylic amine can serve as the fulcrum for stereocontrolled delivery of oxygen to an adjacent trigonal site, and cis-hydroxyamino sugars can thus be prepared. Methods for achieving the complementary procedure, namely, control of the delivery of nitrogen to an adjacent site by an allylic oxygen, are described. For example, treatment of methyl 2,3,6-trideoxy-alpha-L-erythro-hex-2-enopyranoside
A short, efficient route to a protected daunosamine from L-rhamnose
作者:Henry W. Pauls、Bert Fraser-Reid
DOI:10.1039/c39830001031
日期:——
The imidate ester obtained from the reaction of methyl 2,3,6-trideoxy-α-L-threo-hex-2-enopyranoside with trichloroacetonitrile undergoes iodonium ion-induced cyclisation, and the dihydroxazole product is subjected to reductive dehalogenation to give a protected from of daunosamine.