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.
