C07D487/00
Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
C07D487/00
Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
C07D487/02
in which the condensed system contains two hetero rings
C07D487/02
in which the condensed system contains two hetero rings