主权项 |
1. A compound of general formula (I):wherein
R1, R2 and R3 are each independently a straight or branched C1-C10 alkyl, C2-C10 alkenyl or C2-C10 alkynyl; each independently optionally substituted by at least one substituent selected from hydroxy, halogen. R4 is a straight or branched C1-C10 alkyl, C2-C10 alkenyl or C2-C10 alkynyl which is substituted by at least one substituent of general formula (II):wherein
X is selected from N, N+H, N+(C1-C10 alkyl), O+, S+, P, P+H; R5 and R6 are each independently selected from H, C1-C10 alkyl, C2-C10 alkenyl or C2-C10 alkynyl; or both R5 and R6 together with X may form a C3-C8 heterocyclic ring; wherein R5 and R6 may each independently be optionally interrupted by at least one heteroatom selected from —O—, —NH—, N+(C1-C10 alkyl), —S—; including any salt, enantiomer, diastereomer or mixtures thereof. |