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

The gamma-Iso-Methylionones

(8-Methyl-gamma-ionones)

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Photo by permission of M. Roudintska - Art & Parfum

(+)-(6R)-gamma-Iso-methylionone - Rich and interesting woody-ambery leather odour with fruity-floral facets in the direction of irone and methyl ionone and additional green accents.

= (+)-(R)-8-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-Iso-methylionone - Woody-ambery mix odour between methyl ionone and Iso E Super of dry character.

= (-)-(S)-8-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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