Cl.[N:2]1[CH:7]=[CH:6][C:5]([CH2:8]Cl)=[CH:4][CH:3]=1.[CH3:10][O:11][C:12]1[CH:13]=[C:14]([C:20]2[C@@H:29]3[C@@H:24]([CH2:25][CH:26]=[CH:27][CH2:28]3)[C:23](=[O:30])[N:22]([CH:31]3[CH2:36][CH2:35][N:34](C4C=CC([N+]([O-])=O)=CC=4)[CH2:33][CH2:32]3)[N:21]=2)[CH:15]=[CH:16][C:17]=1[O:18][CH3:19].O>C(OCC)C>[CH3:10][O:11][C:12]1[CH:13]=[C:14]([C:20]2[C@@H:29]3[C@@H:24]([CH2:25][CH:26]=[CH:27][CH2:28]3)[C:23](=[O:30])[N:22]([CH:31]3[CH2:36][CH2:35][N:34]([CH2:8][C:5]4[CH:6]=[CH:7][N:2]=[CH:3][CH:4]=4)[CH2:33][CH2:32]3)[N:21]=2)[CH:15]=[CH:16][C:17]=1[O:18][CH3:19]Prepared from starting compound A1 and 4-picolylchloride hydrochloride as described for compound 11. After the addition of 100 ml of water, 20 ml of diethyl ether is added and the resulting mixture stirred for 30 min. The precipitate is filtered off and dried. M.p. 196-197° C.
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