| abstract |
A compound of general f ormula (I) wherein R1, R2, R3, and R4 are, independently, a hydrogen atom or an optionally substituted linear or branched C1-C6 alkyl or C2-C6 alkenyl group, provided that when each of R1, R2, and R3 are a hydrogen atom, R4 is not a phenyl substituted linear or branched C1-C6 alkyl or C2-C6 alkenyl group; and with the proviso that the compound of formula (I) is neither 6,6,6a-trimethyl-hexahydro-cyclopenta [b]furan, 6,6,6a-trimethyl-2-ethyl-hexahydro-cyclopenta [b]furan, 6,6,6a-trimethyl-2-propyl-hexahydro-cyclopenta [b]furan, nor 3-methyl -3-(6,6,6a-trimethyl-hexahydro-cyclopenta [b]-furan-2-yl)-butanone, and use thereof in a fragrant and/or flavouring composition. |