Stereochemical studies. XLVIII. Stereoselective synthesis of 6-deoxy-L-hexose derivatives from L-alanine without a resolution step.
作者:MASAKATSU OHZEKI、TOMISHIGE MIZOGUCHI、KENJI KOGA、SHUNICHI YAMADA
DOI:10.1248/cpb.25.2676
日期:——
A new stereoselective synthesis of methyl α-L-amicetoside (11), methyl α-L-mycaminoside (14) and methyl α-L-oleandroside (17) starting from L-alanine is described. It is shown that methyl 2, 3, 6-trideoxy-α-L-hex-2-enopyranosid-4-ulose (8) is readily accessible from L-alanine in optically pure state and is a potential intermediate for the synthesis of various kinds of 6-deoxy-L-hexoses.
描述了一种从L-丙氨酸出发的新立体选择性合成甲基α-L-阿米克糖苷 (11)、甲基α-L-麦角氨糖苷 (14) 和甲基α-L-欧黎糖苷 (17) 的方法。研究表明,甲基2, 3, 6-三脱氧-α-L-己-2-烯吡喃糖-4-醛 (8) 可以从L-丙氨酸以光学纯净状态轻松获得,并且是合成各种6-脱氧-L-己糖的潜在中间体。