14-O-{[(7RS,8RS)-7-hydroxy-1,4-dioxa-spiro[4.5]dec-8-ylsulfanyl]-acetyl}-mutilin 、
叔丁基二苯基氯硅烷 在
咪唑 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成 14-O-{[(7R,8R)-7-(tert-butyl-diphenyl-silanyloxy)-1,4-dioxa-spiro[4.5]dec-8-ylsulfanyl]-acetyl}-mutilin 、 14-O-{[(7S,8S)-7-(tert-butyl-diphenyl-silanyloxy)-1,4-dioxa-spiro[4.5]dec-8-ylsulfanyl]-acetyl}-mutilin