| 摘要 |
This invention relates to campholenic derivatives of general formula (I) Wherein R1, R2, R3, R4 and R5 represent, each independently, a hydrogen atom or a linear or branched C<SUB>1</SUB>-C<SUB>5 </SUB>alkyl or C<SUB>2</SUB>-C<SUB>5 </SUB>alkenyl group, Y represents a CN, a C(O)R<SUB>6 </SUB>or a CR<SUB>6</SUB>(OR<SUB>alpha</SUB>) (OR<SUB>beta</SUB>) group, wherein R<SUB>6 </SUB>represents a hydrogen atom or a linear or branched C<SUB>1</SUB>-C<SUB>5 </SUB>alkyl or C<SUB>2</SUB>-C<SUB>5 </SUB>alkenyl group, and R<SUB>alpha</SUB> and R<SUB>beta</SUB> represent simultaneously a linear or branched C<SUB>1</SUB>, C<SUB>2</SUB>, C<SUB>3</SUB>, C<SUB>4 </SUB>or C<SUB>5 </SUB>alkyl or C<SUB>2</SUB>, C<SUB>3</SUB>, C<SUB>4 </SUB>or C<SUB>5 </SUB>alkenyl group and can form together a cycle, the 5-membered ring is saturated or has a double bond between C3' and C4' in formula (I), and the side chain, optionally, has a double bond between C1 and C2 and/or between C3 and C4, provided that the derivative is not 3-methyl-6-(2,2,3-trimethyl-cyclopent-3-enyl)-hex-4-enal; and their use as fragrant or flavouring agent.
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