Pyridine → 3-(Tert-butoxycarbonyl)-4-(3-bromophenyl)-4-methyl[1,2,3]-oxathiazolidine-2-oxide

Reaction equation

[Br:5][c:6]1[cH:7][c:8]([C:12]([CH2:13][OH:14])([CH3:15])[NH:16][C:17]([O:18][C:19]([CH3:20])([CH3:21])[CH3:22])=[O:23])[cH:9][cH:10][cH:11]1.[CH3:30][C:31]#[N:32].[S:1](=[O:2])([Cl:3])[Cl:4].[cH:24]1[cH:25][cH:26][n:27][cH:28][cH:29]1>>[S:1]1(=[O:2])[O:14][CH2:13][C:12]([c:8]2[cH:7][c:6]([Br:5])[cH:11][cH:10][cH:9]2)([CH3:15])[N:16]1[C:17]([O:18][C:19]([CH3:20])([CH3:21])[CH3:22])=[O:23]