| 摘要 |
PCT No. PCT/EP95/01650 Sec. 371 Date Jan. 24, 1996 Sec. 102(e) Date Jan. 24, 1996 PCT Filed May 2, 1995 PCT Pub. No. WO95/32208 PCT Pub. Date Nov. 30, 1995Novel 5-HT3 receptor antagonist compounds having following formula (I) <IMAGE> (I) wherein n is 1, 2 or 3; each of R, R1 and R2, which may be the same or different, is hydrogen, halogen, hydroxy, cyano, C1-C6 alkyl, CF3, C1-C6 alkoxy, C1-C6 alkylthio, formyl, C2-C6 alkanoyl, carboxy, C1-C6 alkoxy-carbonyl, nitro, -N (R4 R5) in which each of R4 and R5 independently is hydrogen, C1-C6 alkyl, formyl or C2-C6 alkanoyl; or a (R6 R7) N-SO2 group, in which each of R6 and R7 independently is hydrogen or C1-C6 alkyl; R3 is an imidazolyl group of formula <IMAGE> a) <IMAGE> b) wherein each of R8 and R10 which may be the same or different is hydrogen or C1-C6 alkyl, R9 is hydrogen, C1-C6 alkyl or a nitrogen protecting group; and the pharmaceutically acceptable salts thereof, are disclosed.
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