| 摘要 |
<p>PCT No. PCT/DK93/00291 Sec. 371 Date Mar. 15, 1995 Sec. 102(e) Date Mar. 15, 1995 PCT Filed Sep. 13, 1993 PCT Pub. No. WO94/06770 PCT Pub. Date Mar. 31, 1994The present invention relates to hitherto unknown compounds of formula or their tautomeric forms, the attachment to the pyridine ring being in the 3- or 4-position, in which R', R'' are the same or different and stand for hydrogen, halogen, or trifluoromethyl, hydroxy, C1-C4 alkyl or alkoxy, nitro, or cyano groups. Alkylene stands for a straight or branched C1-C8 carbon chain, which may be substituted by hydroxy or halogen, nitro or cyano groups. X stands for oxygen, for -S(O)n- where n stands for an integer from 0 to 2, or for =N-R1 where R1 is hydrogen or C1-C4 alkyl. R stands for hydrogen or for one or more C1-C4 alkyl or alkoxy, hydroxy, halogen, trifluoromethyl, cyano, carboxamido, sulfamoyl or nitro radicals. The present compounds are of value in the human and veterinary practice as selective serotonin receptor antagonists.</p> |
