Syntheses and odour descriptions of cyclopropanated compounds 2. Analogues of methyl jasmonate

Analogues of methyl jasmonate bearing a cyclopropane ring were synthesized and their odour characteristics were examined. Cyclopropanation of the pentenyl side chains not only increased the odour intensity, but also gave a mossy mushroom characteristic when compared with the original odour. Modification of the cyclopentanone to fix the cis ring geometry reduced both the quality and intensity of the original odour.