abstract |
The invention discloses a nitrogen-containing condensed heterocyclic compound represented by formula I, its pharmaceutically acceptable salt, or their enantiomers, diastereoisomers, tautomers, and solvents Compounds, metabolic precursors or prodrugs, or pharmaceutical compositions containing them and applications thereof. The nitrogen-containing condensed heterocyclic compound of the present invention has better antitumor activity. |