4-methylbenzenesulfonothioic acid S-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl] ester 在
lithium diisopropyl amide 作用下,
生成 (3R,6R,8S,8aR)-3,8a-bis({[(tert-butyldimethylsilyl)oxy]methyl}sulfanyl)-6-{[(tert-butyldiphenylsilyl)oxy]methyl}-2-methyl-8-[(triethylsilyl)oxy]octahydropyrrolo[1,2-a]piperazine-1,4-dione