Enantiodivergent Formal Total Synthesis of Aspercyclide C from l-(+)-Tartaric Acid
作者:Kavirayani Prasad、Vasudeva Gandi、John Nidhiry、Kavya Bhat
DOI:10.1055/s-0029-1218831
日期:2010.8
The enantiodivergent formal syntheses of both enantiomers of aspercyclide C is accomplished. Starting from l-(+)-tartaric acid, the key protected allylic alcohol, (3R,4R)-4-(methoxymethoxy)non-1-en-3-ol is prepared, and is then elaborated into both enantiomers of 3-[(4-methoxybenzyl)oxy]non-1-en-4-ol via Mitsunobu inversion. Esterification with a known biaryl acid, followed by ring-closing metathesis
完成了Aspercyclide C的两个对映异构体的对映异构形式的合成。从1 -(+)-酒石酸开始,制备关键保护的烯丙基醇,(3 R,4 R)-4-(甲氧基甲氧基)非-1-烯-3-醇,然后精制为两种对映体通过Mitsunobu反演得到3-[(4-甲氧基苄基)氧基] non-1-en-4-ol。用已知的联芳酸进行酯化,然后进行闭环复分解和脱保护,完成了合成。 阿斯环素C-全合成-酒石酸-Mitsunobu转化-闭环复分解