| abstract |
The present invention provides an integrase inhibitor. The inventors have have found the following compound of formula (I) possessing an integrase inhibitory activity.n n(wherein, R C and R D taken together with the neighboring carbon atoms form a ring which may be a condensed ring, Y is hydroxy, mercapto or amino; Z is O, S or NH ; nR A is a group shown byn n(wherein, C ring is N-containing aromatic heterocycle) or the like) |