gamma-undecalactone, preparation process and uses in cosmetics or as a food additive

摘要

UNDECALACTONA RANGE, PROCESS FOR PREPARATION AND USE IN COSMETICS OR AS FOOD ADDITIVE. Gamma undecalactone corresponding to formula (I), wherein the cyclo-lactone may carry an unsaturation between carbon n 2 and carbon n 3, and is preferably saturated and wherein R 1 is a C-alkenyl or alkynyl group Carrying at least one unsaturated, optionally substituted and preferably R1 is the group CH ~ 2 ~ CH ~ 2 ~ = CH-CH ~ 2 ~ -CH ~ 2 ~ -CH ~ 2 ~ -CH ~ 2 ~ -CH ~ 2 ~ -, this gamma-undecalactone having an asymmetric carbon at position 4 and may be (R) or (S) deconfiguration, biosynthesis of that gamma-undecalactone, and use in perfumery and food aromatics.