Total synthesis of cerebrosides: (2S, 3R, 4E)-1-O-β-d-galactopyranosyl-N-(2′R and 2′S)-2′-hydroxytetracosanoylsphingenine
作者:Katsuya Koike、Mamoru Sugimoto、Yoshiaki Nakahara、Tomoya Ogawa
DOI:10.1016/0008-6215(87)80219-7
日期:1987.5
Abstract Total syntheses of both (2S, 3R, 4E)-1-O-β- d -galactopyranosyl-N-(2′R)-2′-hydroxytetracosanoylsphingenine 23 and the (2′S) stereoisomer were performed in an unambiguous way by employing either (2S, 3R, 4E)-N-(2′R)-2′-(tert-butyl-diphenylsilyloxy)tetracosanoylsphingenine or its (2′S) stereoisomer as the key glycosyl acceptors. The synthetic cerebroside 23 was shown to be identical with the
摘要(2S,3R,4E)-1-O-β-d-吡喃半乳糖苷-N-(2'R)-2'-羟基四二十烷酰基鞘氨醇23和(2'S)立体异构体的合成方法明确通过使用(2S,3R,4E)-N-(2'R)-2'-(叔丁基-二苯基甲硅烷氧基)四二十烷酰基鞘氨醇或其(2'S)立体异构体作为关键糖基受体。通过比较它们的400-MHz,1H-nmr光谱,表明合成脑苷23与天然产物相同,从而为天然脑苷的2'R构型提供了合成证据。