반응 #82369

반응 방정식

N2 [3(S)-[[N-(benzyloxycarbonyl)-S-methyl-L-cysteinyl]amino]-2(R)-hydroxy-4-phenylbutyl]-N1 -tert.butyl-L-prolinamide

3-chloroperbenzoic acid

→

N2 [3(S)-[[N-(benzyloxycarbonyl)-3-(methylsulphinyl)-L-alanyl]amino]-2(R)-hydroxy-4-phenylbutyl]-N1 -tert.butyl-L-prolinamide

수율 31.3%

용매

methanol

methanol

반응 조건

후처리

1. 1
   기타The solvent was then removed by evaporation
2. 2
   기타the residue was chromatographed on silica gel using System G for the elution

실험 절차

A solution of 193 mg of N2 -[3(S)-[[N-(benzyloxycarbonyl)-S-methyl-L-cysteinyl]amino]-2(R)-hydroxy-4-phenylbutyl]-N1 -tert.butyl-L-prolinamide in 2 ml of methanol was cooled to -70° C. A solution of 62 mg of 3-chloroperbenzoic acid in 5 ml of methanol was added and the mixture was stirred at -70° C. for 30 minutes. The solvent was then removed by evaporation and the residue was chromatographed on silica gel using System G for the elution to give 62 mg of N2 -[3(S)-[[N-(benzyloxycarbonyl)-3-(methylsulphinyl)-L-alanyl]amino]-2(R)-hydroxy-4-phenylbutyl]-N1 -tert.butyl-L-prolinamide as a 1:1 mixture of diastereomers; MS: m/e 601 [M+H]+.

출처