prov:value
| - of the formulae [0089] R11,R12,R13 are independently of each other hydrogen, alkyl, aryl, alkoxy, aryloxy, alkylthio, arylthio, ureido, urethane, acylamino, a heterocyclic ring, alkoxycarbonyl, carbamoyl, sulfamoyl, sulfinyl, acyl or cyano [0090] Q is hydrogen or a leaving group such as halogen, alkoxy, aryloxy, acyloxy, alkyl- or aryl-sulfonyloxy, acylamino, alkyl- or arylsulfonamido, alkoxycarb
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