| abstract |
The present invention provides an integrase inhibitor. The inventors have have found the following compound of formula (I) possessing an integrase inhibitory activity. <CHEM> (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 ; R <A> is a group shown by <CHEM> (wherein, C ring is N-containing aromatic heterocycle) or the like) |