Treated labdanum oil, process for preparing the same, novel ketone compound, and perfume composition containing the same.

摘要

A process of preparing a treated labdanum oil is disclosed, which comprises: (a) a step of mixing a labdanum raw material with an aqueous alkali solution and separating the aqueous layer; (b) a step of adding an acidic substance to the aqueous layer separated in step (a) and separating the thus released acidic components of labdanum; and (c) a step of heating the acidic components obtained in step (b) at a temperature of from 200 to 350 DEG C for a period of from 0.1 to 10 hours. A treated labdanum oil prepared in this process and a perfume composition containing the same are also disclosed. A novel ketone compound of formula (I): <CHEM> and a perfume composition containing the ketone compound are further disclosed.