Rhizoxin synthetic studies. 2. Synthesis of the left hand [C(10) to C(19)] and polyene fragments
作者:David P. Provencal、Cristina Gardelli、Jennifer A. Lafontaine、James W. Leahy
DOI:10.1016/0040-4039(95)01194-m
日期:1995.8
The syntheses of the central core and the polyene fragments of the antitumor macrolide rhizoxin have been achieved in an efficient manner. The core has been prepared in enantiopure form via an asymmetric allylation/aldol protocol. The selective oxidation of dienes was studied and realized in fair yield to generate the requisite aldol precursor. The oxazole polyene fragment was generated in six steps
已经以有效的方式合成了抗肿瘤大环内酯类根霉毒素的中心核和多烯片段。通过不对称的烯丙基化/醛醇缩合方案以对映体纯的形式制备了核心。对二烯的选择性氧化进行了研究,并以合理的产率实现了生成所需的羟醛前体的反应。恶唑多烯片段是从丝氨酸分六步生成的。