(3R,6S,7R,8S,9R,9aR)-6-tert-Butoxycarbonylamino-7,8,9-trihydroxy-5-oxo-octahydro-thiazolo[3,2-a]azepine-3-carboxylic acid methyl ester 在
N-甲基吗啉 、 lithium hydroxide 、 benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate 作用下,
以
甲醇 、
N,N-二甲基甲酰胺 为溶剂,
反应 18.42h,
生成 methyl (3R,6S,7R,8S,9R,9aR)-6-[[(3R,6S,7R,8S,9R,9aR)-6-[[(3R,6S,7R,8S,9R,9aR)-7,8,9-trihydroxy-6-[(2-methylpropan-2-yl)oxycarbonylamino]-5-oxo-3,6,7,8,9,9a-hexahydro-2H-[1,3]thiazolo[3,2-a]azepine-3-carbonyl]amino]-7,8,9-trihydroxy-5-oxo-3,6,7,8,9,9a-hexahydro-2H-[1,3]thiazolo[3,2-a]azepine-3-carbonyl]amino]-7,8,9-trihydroxy-5-oxo-3,6,7,8,9,9a-hexahydro-2H-[1,3]thiazolo[3,2-a]azepine-3-carboxylate