S-ethyl (2S,3aS,4R,5S,7aR)-2-(tert-butyldimethylsiloxy)-5-<(4R,6S,7R,8R,12R)-12-ethyl-6-hydroxy-7-methyl-2-oxo-8-(triisopropylsiloxy)-1-oxacyclododec-4-yl>-3a,4,5,7a-tetrahydro-4-indancarbothioate 在
草酰氯 、
二甲基亚砜 、
三乙胺 作用下,
生成
S-ethyl (2S,3aS,4R,5S,7aR)-2-(tert-butyldimethylsiloxy)-5-<(4R,6S,7R,8R,12R)-2,6-dioxo-12-ethyl-7-methyl-8-(triisopropylsiloxy)-1-oxacyclododec-4-yl>-3a,4,5,7a-tetrahydro-4-indancarbothioate