Methanesulfonyl chloride → 2-(2-Benzyloxycarbonylamino-ethyl)-4-(tert-butyl-dimethyl-silanyloxy)-3-methanesulfonyloxy-pyrrolidine-1-carboxylic acid tert-butyl ester

Reaction equation

[C:1]([O:5][C:6]([N:8]1[CH2:12][CH:11]([O:13][Si:14]([C:17]([CH3:20])([CH3:19])[CH3:18])([CH3:16])[CH3:15])[CH:10]([OH:21])[CH:9]1[CH2:22][CH2:23][NH:24][C:25]([O:27][CH2:28][C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1)=[O:26])=[O:7])([CH3:4])([CH3:3])[CH3:2].CCN(C(C)C)C(C)C.[CH3:44][S:45](Cl)(=[O:47])=[O:46]>C(Cl)Cl.CN(C1C=CN=CC=1)C>[C:1]([O:5][C:6]([N:8]1[CH2:12][CH:11]([O:13][Si:14]([C:17]([CH3:18])([CH3:20])[CH3:19])([CH3:16])[CH3:15])[CH:10]([O:21][S:45]([CH3:44])(=[O:47])=[O:46])[CH:9]1[CH2:22][CH2:23][NH:24][C:25]([O:27][CH2:28][C:29]1[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=1)=[O:26])=[O:7])([CH3:2])([CH3:3])[CH3:4]