Imidazole → Tert-butyl (3S,6R,7S,8S)-5-oxo-3-(triethylsilyloxy)-4,4,6,8-tetramethyl-7-(2,2,2-trichloroethoxycarbonyloxy)-10-undecenoate

Reaction equation

[O:1]=[C:2]([C@H:16]([CH3:32])[C@@H:17]([O:23][C:24]([O:26][CH2:27][C:28]([Cl:31])([Cl:30])[Cl:29])=[O:25])[C@@H:18]([CH3:22])[CH2:19][CH:20]=[CH2:21])[C:3]([CH3:15])([CH3:14])[C@@H:4]([OH:13])[CH2:5][C:6]([O:8][C:9]([CH3:12])([CH3:11])[CH3:10])=[O:7].N1C=CN=C1.[CH2:38]([Si:40](Cl)([CH2:43][CH3:44])[CH2:41][CH3:42])[CH3:39].O>CN(C)C=O>[O:1]=[C:2]([C@H:16]([CH3:32])[C@@H:17]([O:23][C:24]([O:26][CH2:27][C:28]([Cl:29])([Cl:30])[Cl:31])=[O:25])[C@@H:18]([CH3:22])[CH2:19][CH:20]=[CH2:21])[C:3]([CH3:14])([CH3:15])[C@@H:4]([O:13][Si:40]([CH2:43][CH3:44])([CH2:41][CH3:42])[CH2:38][CH3:39])[CH2:5][C:6]([O:8][C:9]([CH3:12])([CH3:11])[CH3:10])=[O:7]