| 摘要 |
PCT No. PCT/IB95/00374 Sec. 371 Date Apr. 17, 1997 Sec. 102(e) Date Apr. 17, 1997 PCT Filed May 18, 1995 PCT Pub. No. WO96/06077 PCT Pub. Date Feb. 29, 1996A compound of formula (I): <IMAGE> (I) and its pharmaceutically acceptable salt, wherein R is hydrogen or hydroxy; Ar is unsubstituted or substituted phenyl; X is unsubstituted or substituted phenyl or heterocyclic, mono-, di- or trihalomethyl, cyano, or the like; and X2 is phenyl, naphthyl, furyl, thienyl, pyridyl, thiazolyl, benzofuryl or benzothienyl, each of which may either be unsubstituted or substituted. These compounds have agonist activity toward opioid kappa receptors and are thus useful as analgesic, anti-inflammatory, diuretic and neuroprotective agents.
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