[CH2:1]([O:8][C:9]([N:11]1[CH2:16][CH2:15][N:14]([C:17](OCC2C=CC=CC=2)=O)[CH2:13][CH2:12]1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH2:27](OC(N1CCNCC1)=O)C1C=CC=CC=1>>[CH2:1]([O:8][C:9]([N:11]([CH2:12][CH3:13])[CH2:16][CH2:15][NH:14][CH2:17][CH3:27])=[O:10])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1Following substantially the same procedure as described in Examle 32, except that N,N'dibenzyloxycarbonylpiperazine was used as starting material, N-benzyloxycarbonylpiperazine was prepared.
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