process for the preparation of o - alkylated hydroxylaminen, method for preparation of a product and product formed therefrom.

摘要

A compound of general formula IMAGE (I) wherein X represents a radical selected from the group consisting of one of the formulae IMAGE in which R1 represents a radical selected from the group (a) a hydrogen atom, (b) an amino group, when X represents an -OR1 moiety, (c) an alkyl group having from 1 to 6 carbon atoms (d) an at most binuclear aryl group being unsubstituted or substituted by at most 3 substituents of the group halogen atoms, alkyl, alkoxy, halogenalkyl groups each having up to 4 carbon atoms, cycloalkyl groups having 3 to 6 carbon atoms, nitro and cyano groups; and R2 and R3, which may be the same or different, each represents a radical selected from the group (a) a hydrogen atom, (b) an alkyl group having from 1 to 6 carbon atoms, an unsubstituted cycloalkyl group having from 3 to 7 carbon atoms, such cycloalkyl group substituted by at most 3 substituents of the group hydroxy groups and alkoxycarbonyl groups having 1 to 4 carbon atoms, (c) an aralkyl group, a diaralkyl group each having 1 to 4 carbon atoms in the alkyl moiety and being unsubstituted or substituted in at least one of the radicals in the alkyl moiety by hydroxy groups, and in the aryl moieties by at most 3 substituents selected from the group consisting of alkoxy groups having from 1 to 4 carbon atoms and halogen atoms, (d) an at most binuclear aryl group being unsubstituted or substituted by at most 3 substituents selected from the group consisting of alkyl, alkoxy, halogenoalkyl groups each having up to 4 carbon atoms and halogen atoms, (e) a hydroxy group when the other of R2 and R3 is hydrogen, (f) R2 and R3, together with the nitrogen atom to which they are attached, represent a 5- to 7-membered ring selected from the group consisting of an unsubstituted ring, a ring being substituted by an alkyl group having from 1 to 4 carbon atoms, and a ring being interrupted by a heteroatom selected from the group consisting of oxygen, sulphur and further nitrogen atom, and (g) R2 and R3 together with the nitrogen atom to which they are attached, represent a ring from the group a 5-membered heteroaromatic ring containing up to 4 nitrogen atoms and such a ring being anelled to a benzene- or uracil-ring, and physiologically acceptable acid addition salts thereof, a process for their preparation and a pharmaceutical composition containing them.