2-Formyl-3-hydroxy-5-methoxy-6-methyl-benzoic acid 4-((R)-1-methoxycarbonyl-2-tritylsulfanyl-ethylcarbamoyl)-butyl ester 在
三乙基硅烷 、
三氟乙酸 作用下,
反应 2.0h,
以79%的产率得到(R)-16-hydroxy-14-methoxy-13-methyl-6,12-dioxo-1,3,4,5,6,7,8,9,10,12-decahydro-11,2,5-benzoxathiaazacyclotetradecine-4-carboxylic acid methyl ester