1,3,4,8-Tetrahydro-2H-pyrido 1,2-a pyrazine derivatives and their use as HIV integrase inhibitors

摘要

Provided is a novel 1,3,4,8-tetrahydro-2H-pyrido[1,2-a]pyrazine derivative or a pharmaceutically acceptable salt thereof, or a solvate thereof, which is useful as an anti-HIV agent. The present invention provides a compound represented by the following formula [I] wherein each symbol is as defined in the specification, or a pharmaceutically acceptable salt thereof, or a solvate thereof.