c

(-)-(3E/Z)-4-((1'R)-2',2',3'-trimethylcyclopent-3-enyl)but-3-en-2-one (a mixture of E:Z-isomers (7:2-ratio) - Odour description: floral, ionone alpha, woody, fruity. Prepared from campholytic aldehyde derived from (R)-campholenic aldehyde (ca. 80% ee) = (-)-(3E/Z)-4-[(1'R)-2',2',3'-trimethylcyclopent-3-en-1-yl]but-3-en-2-one Ref: Jerzy A. Bajgrowicz, Urs Mueller, CYCLOPENTANE/CYCLOPENTENE ALDEHYDE OR KETONE DERIVATIVES AND THEIR USE AS ODORANTS, United States Patent Application 20090298950 (December 3, 2009)

c

(+)-(3E/Z)-4-((1'S)-2',2',3'-trimethylcyclopent-3-enyl)but-3-en-2-one (a mixture of E:Z-isomers (7:2-ratio) - Odour description: agrestic, woody (thujone-type), sweet, powdery, ionone, floral, creamy. Prepared from campholytic aldehyde derived from (S)-campholenic aldehyde (ca. 30% ee) = (+)-(3E/Z)-4-[(1'S)-2',2',3'-trimethylcyclopent-3-en-1-yl]but-3-en-2-one Ref: Jerzy A. Bajgrowicz, Urs Mueller, CYCLOPENTANE/CYCLOPENTENE ALDEHYDE OR KETONE DERIVATIVES AND THEIR USE AS ODORANTS, United States Patent Application 20090298950 (December 3, 2009)

Ionones, Irones, Damascones & Structurally Related Odorants

Acyclics (Alcohols, Esters, Acids, Aldehydes)

Lactones

Sesquiterpenoid Related Odorants