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

The gamma-n-Methylionones

(10-Methyl-gamma-ionones)

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Photo by permission of M. Roudintska - Art & Parfum

(-)-(6R)-gamma-n-methylionone - Woody odour in the direction of methyl ionone with additional dry, leathery aspects.

= (-)-(R)-10-Methyl-gamma-ionone

Ref: Assem Barakat, Elisabetta Brenna, Claudio Fuganti, Stefano Serra, Synthesis, olfactory evaluation and determination of the absolute configuration of the beta- and gamma-Iralia isomers, Tetrahedron: Asymmetry 19 (2008) 2316–2322

(+)-(6S)-gamma-n-methylionone - Woody-floral odour in the direction of methyl ionone, with a fruity-floral violet inclination and facets of orris, but also an oily background.

= (+)-(S)-10-Methyl-gamma-ionone

Ref: Assem Barakat, Elisabetta Brenna, Claudio Fuganti, Stefano Serra, Synthesis, olfactory evaluation and determination of the absolute configuration of the beta- and gamma-Iralia isomers, Tetrahedron: Asymmetry 19 (2008) 2316–2322

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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