[CH3:1][N:2]([CH2:4][C:5]1[O:13][C:12]2[CH2:11][CH2:10][N:9]([C:14](=[O:29])[C:15]3[CH:20]=[CH:19][C:18]([C:21]([C:23]4[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=4)=[CH2:22])=[CH:17][CH:16]=3)[CH2:8][C:7]=2[CH:6]=1)[CH3:3].[ClH:30]>CO.C(OCC)(=O)C>[ClH:30].[CH3:1][N:2]([CH2:4][C:5]1[O:13][C:12]2[CH2:11][CH2:10][N:9]([C:14](=[O:29])[C:15]3[CH:16]=[CH:17][C:18]([C:21]([C:23]4[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=4)=[CH2:22])=[CH:19][CH:20]=3)[CH2:8][C:7]=2[CH:6]=1)[CH3:3]N,N-Dimethyl-[5-[4-(1-phenylethenyl)benzoyl]-4,5,6,7-tetrahydrofuro[3,2-c]pyridin-2-ylmethyl]amine 0.325 g was dissolved in 2 ml of methanol; hydrogen chloride in ethyl acetate was added in excess, followed by stirring. This mixture was concentrated and washed with diethyl ether to yield the desired product.
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