The present invention refers to compound of formula (I) wherein R1 is methyl, ethyl or vinyl; the bond between C-3′ and C-4′ is a single bond or the dotted line together with the bond between C-3′ and C-4′ represents a double bond; and the side chain —CR1OH is at position 1′ or 4′ of the ring. The invention furthermore refers to their preparation and to fragrance applications comprising them.
