Chirality & Odour Perception
John C. Leffingwell, Ph.D.

The Campholenylidene-propionicaldehydes

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Photo by permission of M. Roudintska - Art & Parfum

(1'S)-(-)-2-Methyl-4-(2',2',3'-trimethylcyclopent-3-en-1-yl)- but-2- enal - Odor - Woody, fruity, spicy, fennel-like, sweet, and smooth

= (1'S)-(-)-(2)-Campholenylidenepropionicaldehyde

Ref: Gerhard Buchbauer, Philippine Lebada, Lucia Wiesinger, Petra Weiss-Greiler, Peter Wolschann, On the odor of the enantiomers of Madrol®, Chirality, Volume: 9, Issue: 4, Date: 1997, Pages: 380-385

(1'R)-(+)-2-Methyl-4-(2',2',3'-trimethylcyclopent-3- en-1- yl)-but-2-enal - Odor - Similar to the (-)-antipode, but substantially weaker

= (1'R)-(+)-(2)- Campholenylidenepropionicaldehyde

Ref: Gerhard Buchbauer, Philippine Lebada, Lucia Wiesinger, Petra Weiss-Greiler, Peter Wolschann, On the odor of the enantiomers of Madrol®, Chirality, Volume: 9, Issue: 4, Date: 1997, Pages: 380-385

Cyclic Terpenoid Odorants

Bicyclic Terpenoid Odorants

Acyclic Terpenoid Odorants

Ionones, Irones, Damascones & Structurally Related Odorants

Acyclics (Alcohols, Esters, Acids, Aldehydes)

Lactones

Sesquiterpenoid Related Odorants

Steroid Urine Type Odorants

Sandalwood Type Odorants

Musk Odorants

Miscellaneous

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