tert-butyl (3R,3aS,9S,9aS)-9-[2-[tert-butyl(diphenyl)silyl]oxyethyl]-6,7-dimethoxy-7'-oxospiro[1,2,3a,4,9,9a-hexahydrocyclopenta[b]quinoline-3,5'-2,6-dihydroazepine]-1'-carboxylate 、
sodium methylate 以
甲醇 为溶剂,
反应 0.5h,
以55%的产率得到{(3R,3aS,9S,9aS)-3-[3-(tert-butoxycarbonylamino)prop-1-enyl]-9-[2-(tert-butyldiphenylsilanyloxy)ethyl]-6,7-dimethoxy-2,3,3a,4,9,9a-hexahydro-1H-cyclopenta[b]quinolin-3-yl}acetic acid methyl ester