Citric Acid → N-(6-acetoxy naphthalene-2-sulfonyl)-D-valine tert-butyl ester

Reaction equation

[C:1]([O:5][C:6](=[O:12])[C@@H:7]([CH:9]([CH3:11])[CH3:10])[NH2:8])([CH3:4])([CH3:3])[CH3:2].[C:13]([O:16][C:17]1[CH:18]=[C:19]2[C:24](=[CH:25][CH:26]=1)[CH:23]=[C:22]([S:27](Cl)(=[O:29])=[O:28])[CH:21]=[CH:20]2)(=[O:15])[CH3:14].C(N(CC)CC)C.C(O)(=O)CC(CC(O)=O)(C(O)=O)O>O1CCOCC1.O>[C:1]([O:5][C:6](=[O:12])[C@@H:7]([CH:9]([CH3:10])[CH3:11])[NH:8][S:27]([C:22]1[CH:21]=[CH:20][C:19]2[C:24](=[CH:25][CH:26]=[C:17]([O:16][C:13](=[O:15])[CH3:14])[CH:18]=2)[CH:23]=1)(=[O:29])=[O:28])([CH3:4])([CH3:3])[CH3:2]