2-aminoquinazoline derivatives

Details 2-aminoquinazoline derivatives 2-aminoquinazoline derivatives

2011-03-15

2011-03-15

Padmanabhan, Sreeni (Department: 1627)

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Having -c-, wherein x is chalcogen, bonded directly to...

C544S292000

Reexamination Certificate

active

07906522

ABSTRACT:
The present invention provides 2-aminoquinazoline derivatives represented by formula (I):wherein R1and R2may be the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, and the like;X represents a bond or CR7aR7bwherein R7aand R7bmay be the same or different and each represents a hydrogen atom, and the like;when X is a bond, R3represents substituted or unsubstituted aryl or a substituted or unsubstituted aromatic heterocyclic group;when X is CR7aR7bwherein R7aand R7bhave the same meanings as defined above, respectively, R3represents substituted or unsubstituted lower alkoxy, substituted or unsubstituted aryl, and the like;R4represents a hydrogen atom, hydroxy, substituted or unsubstituted lower alkoxy, and the like; andR5represents a hydrogen atom, substituted or unsubstituted aryl, and the like, or a pharmaceutically acceptable salt thereof.

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