Abstract: Described are bicyclic lactones, both fused ring lactones defined according to the generic structure: and spiro lactones defined according to the generic structure: uses thereof in augmenting, enhancing or imparting aromas in or to perfume compositions, perfumed articles, colognes and perfumed polymers; processes for preparing such bicyclic lactones and intermediates therefor. In the structure: Z is one of the moieties: one of R1 or R3 is methyl and the other is hydrogen; and R4, R5, R6, R7, R8 and R9 hydrogen or nonadjacent C1–C3 alkyl.

Abstract: The compound according to the formula set forth below and the use of the compound in creating fragrances, and scents in items such as perfumes, colognes and personal care products is disclosed.