NAPHTHYLIDINE DERIVATIVE HAVING HIV INTEGRASE INHIBITORY ACTIVITY

摘要

[PROBLEMS] To provide a novel compound having antiviral activity, especially HIV integrase inhibitory activity; and a medicine, in particular, an anti-HIV drug, which contains the compound. [MEANS FOR SOLVING PROBLEMS] The compound is one represented by the formula (I) [wherein R<1> is optionally substituted aralkyl; R<2> and R<3> each independently is hydrogen, optionally substituted alkyl, etc. (provided that the substituent(s) with which the alkyl is "optionally substituted" are noncyclic groups); and R<4> is hydrogen, optionally substituted carboxy, etc.] or a salt thereof.