Pharmaceutical compounds of the formula
R1 is phenyl or heteroaryl selected from thienyl, pyridyl, benzothienyl, quinolinyl, benzofuranyl or benzimidazolyl, said phenyl and heteroaryl groups being optionally substituted, or R1 is furanyl optionally substituted with C1-4 alkyl;
R2 is nitrile, carboxy, -COOR4 where R4 is an ester group, -CONR5R6 where R5 and R6 are each hydrogen or C1-4 alkyl, or R7SO2- where R7 is C1-4 alkyl or optionally substituted phenyl;
R3 is -NR8R9, -NHCOR8, -N(COR8)2, -N=CHOR8 where R8 and R9 are each hydrogen or C1-4 alkyl, or -NHSO2R10 where R10 is C1-4 alkyl or optionally substituted phenyl; or
where X is C2-4 alkylene; and
the group
represents a pyridine ring fused to the benzopyran nucleus; and salts thereof.
式中的药物化合物
R1 是苯基或杂芳基,选自
噻吩基、
吡啶基、
苯并噻吩基、
喹啉基、
苯并呋喃基或
苯并咪唑基,所述苯基和杂芳基可选择被取代,或者 R1 是可选择被 C1-4 烷基取代的
呋喃基;
R2 是腈、羧基、-COOR4(其中 R4 是酯基)、-CONR5R6(其中 R5 和 R6 分别是氢或 C1-4 烷基)或 R7SO2- (其中 R7 是 C1-4 烷基或任选取代的苯基);
R3 是-NR8R9、-NHCOR8、-N(COR8)2、-N=CHOR8(其中 R8 和 R9 分别是氢或 C1-4 烷基)或-NHSO2R10(其中 R10 是 C1-4 烷基或任选取代的苯基);或
其中 X 是 C2-4 亚烷基;以及
基团
代表与苯并
吡喃核融合的
吡啶环;及其盐类。