(R)-2-[(1R,4S,6R)-1-(Benzothiazol-2-yldisulfanyl)-3,7-dioxo-6-phenyl-5-oxa-2,8-diaza-spiro[3.4]oct-2-yl]-3-methyl-but-3-enoic acid benzhydryl ester 以
甲苯 为溶剂,
以100%的产率得到benzhydryl (2S,2'S,3'R,5R,5'R)-3'-(1,3-benzothiazol-2-ylsulfanylmethyl)-3'-methyl-4,7'-dioxo-5-phenylspiro[1,3-oxazolidine-2,6'-4-thia-1-azabicyclo[3.2.0]heptane]-2'-carboxylate