Pyridine → (S)-3-[(S)-2-(4-Acetoxy-phenyl)-2,3-dihydro-benzo[1,4]dioxin-6-yl]-2-tert-butoxycarbonylamino-propionic acid methyl ester

Reaction equation

[CH3:1][O:2][C:3](=[O:31])[C@@H:4]([NH:23][C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])[CH2:5][C:6]1[CH:22]=[CH:21][C:9]2[O:10][C@@H:11]([C:14]3[CH:19]=[CH:18][C:17]([OH:20])=[CH:16][CH:15]=3)[CH2:12][O:13][C:8]=2[CH:7]=1.N1C=CC=CC=1.[C:38](OC(=O)C)(=[O:40])[CH3:39]>C(Cl)Cl>[CH3:1][O:2][C:3](=[O:31])[C@@H:4]([NH:23][C:24]([O:26][C:27]([CH3:28])([CH3:30])[CH3:29])=[O:25])[CH2:5][C:6]1[CH:22]=[CH:21][C:9]2[O:10][C@@H:11]([C:14]3[CH:19]=[CH:18][C:17]([O:20][C:38](=[O:40])[CH3:39])=[CH:16][CH:15]=3)[CH2:12][O:13][C:8]=2[CH:7]=1