C1(COC([NH:11][C@H:12]2[CH2:18][C:17]3[CH:19]=[CH:20][CH:21]=[CH:22][C:16]=3[CH2:15][N:14]([CH2:23][C:24]([O:26][CH2:27][CH3:28])=[O:25])[C:13]2=[O:29])=O)C=CC=CC=1.CO.C(Cl)Cl.C(Cl)(Cl)Cl>[OH-].[OH-].[Pd+2].C(O)C>[NH2:11][C@H:12]1[CH2:18][C:17]2[CH:19]=[CH:20][CH:21]=[CH:22][C:16]=2[CH2:15][N:14]([CH2:23][C:24]([O:26][CH2:27][CH3:28])=[O:25])[C:13]1=[O:29]20% Palladium hydroxide/carbon catalyst was added to a solution of (S)-1,3,4,5-tetrahydro-4-[[(phenylmethoxy)carbonyl]amino]-3-oxo-2H-2-benzazepine-2-acetic acid, ethyl ester (1.037 g., 2.62 mmole) in absolute ethanol (20 ml.) and the resulting suspension was stirred under a hydrogen atmosphere (balloon) for 2 hours. The mixture was filtered through Celite and filtrate was evaporated to dryness. The semi-solid residue was triturated with hexane to give 0.63 g. of product as a white, crystalline solid; m.p. 71°-73° C.; Rf =0.38 (methanol:methylene chloride, 1:9); [α]D =77.5° (c=0.59, chloroform).
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