| 摘要 |
The invention relates to a novel class of amide derivatives which act as thrombin inhibitors as described by formula (I), where R1 and R2, independently represent a group (a) or R1 and R2 together form a C3-7 heterocycloalkyl or heterocycloalkenyl group which may be optionally substituted by C1-6 alkyl, C1-4 alkoxy, halogen, carboxylic acid or a C1-4 carboxylic acid ester group; R3 represents hydrogen, C1-3 alkyl, halogen, or C1-2 alkoxy; R4, R5 and R6 independently represent hydrogen, or halogen; R7 represents hydrogen or C1-6 alkyl; R8 represents hydrogen, C3-7 cycloalkyl, C3-7 cycloalkenyl, C3-7 heterocycloalkyl, C3-7 heterocycloalkenyl, aryl or heteroaryl, which groups are optionally substituted by one or more groups selected from halogen, hydroxy, CN, C1-6 alkyl, C1-6 alkoxy, C1-6 acyloxy, NR9R10, NHCOR11, NHSO2R12, COR13, CO2R14, CONR15R16, and SO2NHR17; X represents a bond, a C1-6 alkyl chain, or a C3-6 alkenyl chain, where one or two nitrogen, oxygen, or sulfur atoms may be optionally contained within each chain, and the chains are optionally substituted by one or more groups selected from halogen, hydroxy, CN, C1-6 alkyl, C1-6 alkoxy, C1-6 acyloxy, NR9R10, NHCOR11, NHSO2R12, COR13, CO2R14, CONR15R16, and SO2NHR17; R9-R17 represent hydrogen, C1-6 alkyl, or R9 and R10 or R15 and R16 form a C</PDA |
