The present invention primarily relates to the use of one or more compound(s) of formula (I) as fragrance, wherein R is methyl or ethyl and R1 is H, methyl or ethyl. The invention further relates to new fragrance compositions comprising one or more compound(s) of formula (I), as described herein, the use of said fragrance compositions, perfumed articles comprising said fragrance compositions, and various methods of perfuming said articles or for imparting, modifying and/or enhancing certain olfactory notes.