The Theaspiranes

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

The Theaspiranes

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Photo by permission of M. Roudintska - Art & Parfum

(2R,5R)-(+)-theaspirane - weak camphoraceous note

= (2R,5R)-(+)- 2,6,10,10-Tetramethyl-1-oxa-spiro[4.5]dec-6-ene

Ref: G. Schmidt, G. Full, P. Winterhalter and P. Schreier, J. Agric. Food Chem. 40, 1188-1191 (1992)

(2S,5S)-(–)- theaspirane - fresh camphoraceous note

= (2S,5S)-(–)- 2,6,10,10-Tetramethyl-1-oxa-spiro[4.5]dec-6-ene

Ref: G. Schmidt, G. Full, P. Winterhalter and P. Schreier, J. Agric. Food Chem. 40, 1188-1191 (1992)

(2S,5R)-(+)-theaspirane - naphthalene-like

= (2S,5R)-(+)- 2,6,10,10-Tetramethyl-1-oxa-spiro[4.5]dec-6-ene

Ref: G. Schmidt, G. Full, P. Winterhalter and P. Schreier, J. Agric. Food Chem. 40, 1188-1191 (1992)

(2R,5S)-(-)-theaspirane - highly attractive intense fresh-fruity (black currant or cassis-like)
= (2R,5S)-(-)- 2,6,10,10-Tetramethyl-1-oxa-spiro[4.5]dec-6-ene

Ref: G. Schmidt, G. Full, P. Winterhalter and P. Schreier, J. Agric. Food Chem. 40, 1188-1191 (1992)

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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