申请人:VERNALIS R & D LTD
公开号:WO2006030211A2
公开(公告)日:2006-03-23
Compounds of formula: (I) are found to antagonise N-type calcium channels wherein: - A is a 5- to 10-membered heteroaryl or heterocyclyl moiety, said moiety being optionally fused to a phenyl, 5- to 6-membered heteroaryl, C3-C6 carbocyclyl or 5- to 6- membered heterocyclyl group; - B is a bond or a C1-C6 alkyl or C2-C6 alkenyl moiety; - either (a) R1 is hydrogen or C1-C6 alkyl and R2 is hydrogen, C1-C6 alkyl, C2-C6 alkenyl, halogen, hydroxy, thio, amino, -Het-L or -L-Het-L', wherein L and L' are the same or different and represent C1-C6 alkyl or C2-C6 alkenyl and Het is O, S or NR, wherein R is hydrogen or C1-C6 alkyl or (b) R1 and R2 form, together with the carbon to which they are attached, a 5- to 10-membered heterocyclyl or a C3-C8 carbocyclyl moiety; R3 is hydrogen, C1-C6 alkyl, C2-C6 alkenyl or -L-Het-L', wherein L, L' and Het are as defined above; and - R4, R5 and R6 are the same or different and represent hydrogen, halogen, hydroxy, amino, thio, C1-C6 alkyl, C2-C6 alkenyl, C1-C6 alkoxy, C1-C6 alkylthio, mono(C1-C6 alkyl)amino or di(C1-C6 alkyl)amino.