| 摘要 |
Described is the genus of compounds defined according to the structure: <IMAGE> wherein one of the dashed lines represents a carbon-carbon double bond and the other of the dashed lines represents a carbon-carbon single bond; wherein R4 represents methyl or ethyl; wherein one of R1, R2 and R3 represents 2-methyl-1-propenyl or 2-methyl-1-propylidenyl; and the other of R1, R2 and R3 represent hydrogen; with the provisos that: (i) when the dashed line at the 3-4 position is a double bond, then R3 is hydrogen or 2-methyl-1-propenyl; (ii) when the dashed line at the 2-3 position is a double bond, then R2 is hydrogen or 2-methyl-1-propenyl; (iii) when R4 is ethyl, then R2 is methyl and the double bond is at the 2-3 position; and (iv) when R4 is methyl, then R2 is hydrogen; 2-methyl-1-propenyl or 2-methyl-1-propylidenyl; with the members of said genus being novel compounds when R4 is ethyl or when R4 is methyl and the double bond is at the 3-4 position or when R4 is methyl and the double bond is at the 2-3 position with R3 being hydrogen, which compounds are useful in augmenting or enhancing the aroma or taste of consumable materials including smoking tobacco compositions, smoking tobacco articles, perfume compositions, colognes and perfumed articles (e.g. solid or liquid anionic, cationic, nonionic or zwitterionic detergents, cosmetic powder compositions, fabric softener compositions and fabric softener articles). Also described is the process for preparing the compound.
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