| abstract |
By the process, there are provided compounds of formula and salts thereof wherein n is 0 or 1, r 1 and r 2 are each an aliphatic or cycloalkyl group or a NR 12 group which is optionally substituted heterocyclic ring, r 3 is an alkyl, cycloalkyl or optionally substituted amino group , R 5 is an aliphatic group, R 6 is an optionally substituted aliphatic group or cycloalkyl group, or R 3 and R 5 together with the nitrogen atom or the carbon atom to which they are attached form an optionally substituted heterocyclic ring or R 5 and R 6 together with the nitrogen atom, to which they are attached, form a heterocycle en ring optionally substituted with an alkyl group and r7 is an optionally substituted alkyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkoxycarbonyl, trifluoromethyl or cyano group. |