2-Formyl-3-hydroxy-5-methoxy-6-methyl-benzoic acid ((R)-1-methoxycarbonyl-2-tritylsulfanyl-ethylcarbamoyl)-methyl ester 在
三乙基硅烷 、
三氟乙酸 作用下,
反应 2.0h,
以62%的产率得到(10R,23R)-1,14-Dihydroxy-3,16-dimethoxy-4,17-dimethyl-5,8,18,21-tetraoxo-5,8,9,10,11,13,18,21,22,23,24,26-dodecahydro-7H,20H-6,19-dioxa-12,25-dithia-9,22-diaza-dibenzo[a,l]cyclodocosene-10,23-dicarboxylic acid dimethyl ester