| 摘要 |
Is to provide a novel compound having an anti-viral activity, particularly a HIV integrase inhibitory activity, and a pharmaceutical composition, particularly an anti-HIV agent. (wherein R1 is hydrogen or lower alkyl; X is lower alkylene etc.; R2 is optionally substituted aryl; R3 is hydrogen, halogen, hydroxy, optionally substituted lower alkyl etc.; R4 is hydrogen, optionally substituted lower alkyl, optionally substituted cycloalkyl, optionally substituted cycloalkyl lower alkyl, optionally substituted aryl, optionally substituted aryl lower alkyl, optionally substituted heterocyclic group, optionally substituted heterocyclic lower alkyl etc.; A broken line indicates the presence or absence of a bond; B1 and B2 are such that any one of them is CR20R21, and the other is NR22 and, in this case, there is no broken line. When B2 is NR22, R4 and R22 may be connected together to form an optionally substituted heterocycle; When B2 is CHR21, R4 and R21 may be connected together to form an optionally substituted heterocycle. Alternatively, B1 and B2 are independently C, CR23 or N and, in this case, B1 and B2 may be taken together to form a heterocycle. R20, R21, R22 and R23 are independently hydrogen, optionally substituted lower alkyl, optionally substituted cycloalkyl, optionally substituted cycloalkyl lower alkyl etc.) |
