(S)-[2-[(3R)-5-[bis(tert-butoxycarbonyl)amino]-3-(2-fluoro-5-nitrophenyl)-3,6,6-trimethyl-1,1-dioxo-2H-1,4-thiazin-2-yl]ethyl]benzenecarbothioate 在
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 0.17h,
以70%的产率得到tert-butyl N-[(4aR,11bR)-3,3,11b-trimethyl-10-nitro-4,4-dioxo-5,6-dihydro-4aH-[1]-benzothiepino[4,5-b][1,4]thiazin-2-yl]-N-tert-butoxycarbonylcarbamate