abstract |
PCT No. PCT/GB95/01868 Sec. 371 Date Feb. 13, 1997 Sec. 102(e) Date Feb. 13, 1997 PCT Filed Aug. 7, 1995 PCT Pub. No. WO96/05181 PCT Pub. Date Feb. 22, 1996The present invention relates to compounds of formula (I) <IMAGE> (I) wherein X is -NR6R7 or C- or N-linked imidazolyl; Y is hydrogen or C1-4alkyl optionally substituted by hydroxy; R1, R2, R3, R4 and R5 are selected from a variety of suitable aromatic substituents; R6 is hydrogen, C1-6alkyl, C3-7cycloalkyl, C3-7cycloalkylC1-4alkyl, phenyl, or C2-4alkyl substituted by C1-4alkoxy or hydroxy; R7 is hydrogen, C1-6alkyl, C3-7cycloalkyl, C3-7cycloalkyl C1-4alkyl, phenyl, or C2-4alkyl substituted by one or two of C1-4alkoxy, hydroxy or a 4, 5 or 6 membered heteroaliphatic ring containing one or two heteroatoms selected from N, O and S; or NR6R7 is a saturated or partially saturated heterocyclic ring of 4 to 7 ring atoms, optionally containing one of O, S, NR8, S(O) or S(O)2 and optionally substituted by one or two of hydroxy1-4alkyl, C1-4alkoxy C1-4alkyl, oxo, CORa or CO2Ra; or NR6R7 forms a non-aromatic azabicyclic ring system of 6 to 12 ring atoms; and R9a and R9b are each independently hydrogen or C1-4alkyl, or R9a and R9b are joined so, together with the carbon atoms to which they are attached, there is formed a C5-7ring; or a pharmaceutically acceptable salt thereof. The compounds are of particular use in the treatment or prevention of pain, inflammation, migraine, emesis and postherpetic neuralgia. |