FOERFARANDE FOER FRAMSTAELLNING AV NYA 3-AMINO-1-BENZOXEPINDERIVAT OCH DERAS SALTER

Novel, 3-amino-1-benzoxepin-5(2H)-one derivatives and methods for their production are disclosed. These derivatives correspond to the Formula I: I wherein: R1 and R2 independently of one another are hydrogen, C1-C3 alkyl, C1-C5 alkyl substituted with a terminal phenyl, or a phenyl containing one or two halogens, methyl or methoxy groups, a 3,4-methylenedioxy or a 3,4 -ethylenedioxy group, C2-C5 alkyl substituted with terminal hydroxy or methoxy or, C3-C4 alkenyl; or one of R1 and R2 are hydrogen or a C1-C5 alkyl and the other is a C2-C5 alkyl substituted with a terminal NR5R6; R5 and R6 independently of one another are hydrogen or C1-C5 alkyl; or R5 and R6 are together a 5 or 7 member ring, or R5 and R6 are together a 5 to 7 member ring having heterogeneous oxygen, sulfur or nitrogen; R1 and R2 are together a 5 to 7 member ring, or R1 and R2 are together a 5 to 7 member ring having heterogeneous oxygen, sulfur or NR7; R7 is hydrogen, methyl, benzyl or phenyl; R3 and R4 are independently of one another are hydrogen, halogen, C1-C4 alkyl, C1-C4 alkoxy or C1-C4 alkylthio; or one of R3 and R4 is trifluoromethyl or nitro and the other is hydrogen; and the acid addition salts thereof. These compounds have a favorable effect on the treatment of spasms of the stomach-intestinal tract and, therefore, constitute the active ingredient of pharmaceutical compositions and methods for the treatment of disorders of the stomach and intestinal tract. Processes for the preparation of the derivatives and their acid addition salts and intermediate products for their preparation are also described.