Abstract: The present invention relates to the use of compounds of the general Formula (XIII): wherein A7 is C?O, C?S, SO2, CH—OR13, C?NR12, or CH2—CHOR13; A8 is C(R14)2, O, S, or NR12; A9 is C?O, C?S, SO2, CH—OR13, C?NR12,or CH2—CHOR13; m is 0, or 1 q is 0, or 1 r is 0, or 1 R12 is H, CH3, CH2—CH3, C6H5, OCH3, OCH2—CH3, OH, or SH; R13 is H, CH3, or CH2—CH3; R14 is H, alkyl, alkoxy, OH, or SH.

Abstract: The present invention relates to the use of compounds of the general Formula (I): wherein in Formula (I), R is H, alkyl, cycloalkyl, aryl or heteroaryl; R1 is H, alkyl, cycloalkyl, aryl or heteroaryl; R2 is H, alkyl, cycloalkyl, aryl or heteroaryl; A1 and A2 each independently represent an optionally substituted C1-C20-alkyl group which may contain one or more group(s) Z, or a monocyclic or polycyclic optionally substituted aromatic or non-aromatic ring system which may contain one or more group(s) X, and in case of a polycyclic ring system, said system contains at least one aromatic ring; Z is selected from the group consisting of S, O, N, NR4, CO, CO2, CS, SO or SO2 X is selected from the group consisting of S, O, N, NR4, SO or SO2.