摘要：

The present invention relates to fragrance delivery systems which comprise: a) one or more pro-fragrances having formula (I) wherein G<Sup>1 </Sup>and G<Sup>2 </Sup>are methyl, or a cyclic hydrocarbyl unit derived from the isomers of ionone and/or damascone; R and R<Sup>1 </Sup>are each independently C<Sub>1</Sub>-C<Sub>22 </Sub>substituted or unsubstituted, branched or unbranched alkyl, C<Sub>2</Sub>-C<Sub>22 </Sub>substituted or unsubstituted, branched or unbranched alkenyl, C<Sub>2</Sub>-C<Sub>20 </Sub>substituted or unsubstituted, branched or unbranched hydroxyalkyl, C<Sub>7</Sub>-C<Sub>20 </Sub>substituted or unsubstituted alkylenearyl, C<Sub>3</Sub>-C<Sub>20 </Sub>substituted or unsubstituted cycloalkyl, alkyleneoxy, C<Sub>6</Sub>-C<Sub>20 </Sub>aryl, C<Sub>5</Sub>-C<Sub>20 </Sub>heteroaryl comprising one or more heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur, and mixtures thereof; two of the units Y<Sup>1</Sup>, Y<Sup>2</Sup>, R or R<Sup>1 </Sup>can be taken together to form one or more aromatic or non-aromatic, heterocyclic or non-heterocyclic, single rings, fused rings, bicyclo rings, spiroannulated rings, or mixtures thereof, said rings comprising from 3 to 20 carbon atoms and one or more heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur, and mixtures thereof; b) one or more aldehyde releasing oxazolidine pro-fragrances; and c) the balance carriers, pro-fragrances, pro-accords, other perfume ingredients.

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