[O:1]=[C:2]1[CH2:6][CH2:5][CH2:4][N:3]1[C:7](OC1C=CC=CC=1)=[O:8].Br.[CH3:17][O:18][C:19]1[CH:24]=[CH:23][C:22]([O:25][CH2:26][CH2:27][NH:28][CH3:29])=[CH:21][CH:20]=1.C(N(CC)CC)C.C(OCC)(=O)C>CC(N(C)C)=O>[CH3:29][N:28]([CH2:27][CH2:26][O:25][C:22]1[CH:23]=[CH:24][C:19]([O:18][CH3:17])=[CH:20][CH:21]=1)[C:7]([N:3]1[CH2:4][CH2:5][CH2:6][C:2]1=[O:1])=[O:8]
A mixture of 1.87 g (9.13 mmol) of 2-oxo-1-phenoxycarbonylpyrrolidine (II), 2.39 g (9.13 mmol) of 2-(4-methoxyphenyloxy)ethyl-N-methylamine hydrobromide and 2.30 g (22.8 mmol) of triethylamine in 0.5 ml of DMA was heated at 115°-125° C. for 6.5 hr. and ethyl acetate was added to the reaction solution. The mixture was washed with aqueous NaHCO3 and water, and dried, then the solvent was distilled off. The residue was refined by silica gel column chromatography, whereby 2.37 g of an oily compound (Ia-41) was obtained from the eluate with toluene/ethyl acetate (5/1-3/1 v/v). Yield: 88.8%.
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