Synthetic study of (9S)-9-dihydroerythronolide A via Wittig-Horner coupling of C1-C6 and C7-C15 segments.
作者:Hitoshi TONE、Takao NISHI、Yuji OIKAWA、Masataka HIKOTA、Osamu YONEMITSU
DOI:10.1248/cpb.37.1160
日期:——
As part of a study directed at the total synthesis of (9S)-9-dihydroerythronolide A, Wittig-Horner coupling was carried out between the C7-C15 segment, (2S, 3R, 4S, 5R, 6R, 7R)-3, 5-isopropylidenedioxy-7-(4-methoxybenzyloxy)-6-methoxymethoxy-2, 4, 6-trimethylnonanal synthesized from the C9-C15 triol, and the C1-C6 segment, diethyl (2RS, 4S, 5R, 6R)-6-tert-butyldimethylsilyloxy-4-(3, 4-dimethoxybenzyloxy)-2-oxo-1, 3, 5-trimethylhexylphosphonate synthesized from the C1-C5 diol, to obtain the C1-C15 enone, although the yield was poor.
作为一项旨在实现(9S)-9-二氢红诺苷A全合成研究的一部分,进行了C7-C15片段(2S, 3R, 4S, 5R, 6R, 7R)-3, 5-异丙叉二氧-7-(4-甲氧基苄氧基)-6-甲氧基甲氧基-2, 4, 6-三甲基壬醛(由C9-C15三醇合成)与C1-C6片段二乙基(2RS, 4S, 5R, 6R)-6-叔丁基二甲基硅氧基-4-(3, 4-二甲氧基苄氧基)-2-氧代-1, 3, 5-三甲基己基膦酸酯(由C1-C5二醇合成)的Wittig-Horner偶联反应,合成了C1-C15烯酮,尽管产率较低。