new derivatives of benzo b chromeno - naphthyridin - one of pyrano 2 ', 3' - 7 'quino 2,3-b quinoxalin - one, their preparation process and pharmaceutical compositions containing them

摘要

New benzo [(b)] X1 and Y1 denote groups selected from hydrogen, halogen, hydroxyl, alkoxy, nitro, cyano, trihaloalkene and nrarb, wherein RA and Rb are defined in the description, R1 denotes hydrogen atom or alkyl, R2 denotes groups selected from hydrogen, alkyl and gold atoms. -NR'-AR'-O'-ta-orNR a-C (O) -TaH -O-C (O) -TaH -O-Ta-NRa Rb-NR "a-Ta-OR" a, -NR "a-Ta-CO2R" a, -NR "aC (O) -Ta-NR'aR'b in which R'a, R'b, R'a and Ta are as defined in the description, „R3, R4 represent a hydrogen atom or an alkyl group,„ A represents a group of formula -CH (R5) -CH (R6) -,-CH = C (R7) -,R7=CH-- (O-CH)Among them, R5, R6, R7 and R8 are defined as isomers in the description, N-oxides, and their salt d'adduct acids or pharmaceutically acceptable bases. medicine