SYNTHESIS OF 6-ALLYL-7-HYDROXY-5-METHOXY-4-METHYLPHTHALIDE, A KEY INTERMEDIATE IN THE SYNTHESIS OF MYCOPHENOLIC ACID
作者:Adrián Covarrubias-Zúnniga、José Diaz-Dominguez、José S. Olguín-Uribe
DOI:10.1081/scc-100104047
日期:2001.1
followed by a regiocontrolled Dieckmann-type cyclization over the adequate methyl ester group, has been applied to an efficient formal synthesis of the antitumor antibiotic, mycophenolic acid 1. This tandem annulation reaction generates the fully substituted aromatic intermediate 12, which was transformed by a simple six-step sequence to 2, and even to 1 by the methodology of Birch et al.[15]
基于 1-烯丙基-1,3-丙酮二羧酸二甲酯阴离子 8 与 4-新戊酰氧基-2-丁缩醛 9 的迈克尔加成的收敛芳香环化策略,然后在足够的甲基酯基团上进行区域控制的 Dieckmann 型环化,具有已应用于抗肿瘤抗生素霉酚酸 1 的有效形式合成。 这种串联环化反应生成完全取代的芳香族中间体 12,通过简单的六步序列将其转化为 2,甚至通过 Birch 的方法转化为 1等[15]