prov:value
| - b) reacting compounds of the formula VII or VIII ##STR13## in which n, R1, R2, R3, R4, R5, R6, R7, R8, R12, R13, X and Z are as defined in the formulae I and II, with a compound of the formula IX, X or XI ##STR14## in which R11 is as defined in formula I or II, A is a halogen atom or a hydroxyl group, it also being possible for the compounds of the formulae IX and X to be in the form of an anhydri
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