| 摘要 |
Title compds. (I; R1, R2 = H, lower alkoxy, linking to form lower alkylene dioxy; R3 = H, lower alkyl, cyclo alkyl; R4,R5,R6 = H, lower alkxoy, lower alkyl, halogen, linking to form lower alkylene dioxy; A = C2-10alkylene) useful as antispasmodics, were prepd. by reaction of II and III(X =halogen) in organic solvent such as CH3COCH3, CH3COC2H5, acetonitrile benzene in the presence of Na2CO3, CaCO3. Thus, 1.85 g II(R1, R2 = H; R3 = Et), 3.9 g III(R4,R5 = Me; R6 = H; A = Bu, X = I), 1.1 g Na2CO3 and 40 ml CH3COC2H5 were mixed and heated for 60 hr under refluxing. The reactant was condensed, extracted with CHCl3, and recrystallized to give 2.3 g I.
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