| abstract |
Compounds of the formula I ** Formula ** in which m is 1; R1, R2, R4 and R5 independently of each other are hydrogen, C1-C4 alkyl, C5-C7 cycloalkyl, phenyl, C1-C4 alkoxy, C5-C7 cycloalkoxy or phenoxy; R3, if m is 1, has one of the meanings as given above for R1, R2, R4 and R5; R6 is hydrogen or C1-C4 alkyl; R7 is hydrogen and if R6 is hydrogen, then R7 may additionally be C1-C4 alkyl; R8 is the group A or B ** Formula ** X is O, O-CH2- or -O (CHR14) -; n is 0-10; with the proviso that (i) if n is 0 and X is O, then R8 is a group A; (ii) if n is different from 0, then X is O and R8 is group A; R9 and R10 independently of each other are hydrogen or C1-C4 alkyl; R11 and R12 independently of each other are C1-C4 alkyl or together with the C atom to which a saturated carbocyclic ring of 5 to 7 members is attached; R13 is hydrogen, C1-C4 alkyl, C5-C7 cycloalkyl, 2-tetrahydropyranyl or Si (C1-C4 alkyl) 3; R14 is a group A '** Formula ** and R'13 has one of the meanings given for R13 or is the group C ** Formula ** |