Patent ID: 8263566

Claim:
A compound of formula (I): wherein n is 0 or 1; A-B is —CH═CH— or —CH 2 —CH 2 —; R 1 is C 1 -C 12 -alkyl, C 3 -C 5 -cycloalkyl or C 2 -C 12 -alkenyl; R 2 and R 3 together are a three- to seven-membered alkylen- or a four- to seven-membered alkenylen bridge, wherein one or two CH 2 -groups may independently of each other be replaced by a group —C(═O)—, —C(═S)—, O, S, —NR 5 , —OC(═O)—O, —OC(═O)S—, —OC(═O)N(R 5 )—, —C(═O)O—, —C(═O)S, —C(═O)N(R 5 )—, —N(R 5 )C(O)S—, —N(R 5 )C(═O)N(R 5 )—, and wherein the alkylene or alkenylen bridge may be independently of each other be substituted with one or two substituents selected from the group consisting of C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy and C 1 -C 4 -halogenalkyl; R 5 is H, C 1 -C 8 -alkyl, C 3 -C 8 -cycloalkyl, C 2 -C 8 -alkenyl, benzyl or —C(═O)—C 1 -C 12 -alkyl; and, where applicable, to E/Z isomers, mixtures of E/Z isomers and/or tautomers, in each case in free form or in salt form; with the proviso, that the compound is not the B1a or B1b derivative when n is 1, and R 2 and R 3 together are unsubstituted —CH 2 —CH 2 —CH 2 —CH 2 —.