| 摘要 |
A compound of the formula I:in whichP is hydrogen or alkyl;Y and Y' are each hydrogen or, when taken together, represent a group =CH2;W and W' are each hydrogen;X is selected from the group consisting of a hydroxyalkyl, a hydroxyalkoxy, an alkoxy optionally comprising an epoxide function, a hydroxyalkene, a hydroxyalkadiene, a hydroxyalkyne and isomeric forms thereof; anda) either R1 and R3 or R'3 form a saturated 5- or 6-membered carbocyclic ring and R2, R'2, R3 or R'3, R4, R'4, R5 and R'5 are each independently hydrogen or alkyl; orb) R2 or R'2 and R4 or R'4 form a saturated 5- or 6-membered carbocyclic ring, and R1, R2 or R'2, R3, R'3, R4 or R'4, R5 and R'5 are each independently hydrogen or alkyl; orc) R3 or R'3 and R5 or R'5 form a saturated or unsaturated 5- or 6-membered carbocyclic ring, and R1, R2, R'2, R3 or R'3, R4, R'4, and R5 or R'5 are each independently hydrogen or alkyl; ord) R3 or R'3 taken at the same time with R1 and R5 or R'5 form a saturated 8- or 12-membered carbobicyclic ring, and R2, R'2, R3 or R'3, R4, R'4, and R5 or R'5 are each independently hydrogen or alkyl.
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