3,4-dihydro-2H-benzo[1,4]oxazine derivatives

摘要

Compounds are provided having the following formula:wherein:R1 is hydrogen or halogen;R2 is hydrogen, alkoxy or carboximide;R3 is hydrogen, alkyl, alkylaryl, aryl or substituted aryl;R4 is hydrogen, CN, halogen, or carboximide; andX is CH or N; or pharmaceutically acceptable salts thereof.