A New Keto-alcohol, (−)-Mintlactone, (+)-isoMintlactone and Minor Components in Peppermint Oil

Synthesis and Distribution of (─)-Mintsulfide, a Novel Sulfur-containing Sesquiterpene

“…k Also detected in peppermint oils cropped in farwestern USA (Oregon, Washington, Idaho), Bulgaria and Japan. 1 Also detected in dementholized mint oils cropped in China and Hokkaid6, Japan.…”

Menthofurolactone: a new p‐menthane lactone in Mentha piperita L.: analysis, synthesis and olfactory properties

“…1,3,4 Of these, mintlactone is widely used in commercial flavours (as a mixture of 3 and 4) and lactones 6-8 are useful in both flavours and fragrances. 4,5 The autoxidation of menthofuran 11 (Scheme 2) is well known and in acetic acid a deep-blue colour with a red fluorescence is developed, a phenomenon which *Correspondence to: E. Frérot, Firmenich SA, Corporate R&D Division, PO Box 239, 1211 Geneva 8, Switzerland.…”

“…In particular, ( )-mintlactone 3 and (C)-isomintlactone 4 have been isolated as minor components of peppermint oil (Mentha piperita L.). 1,2 The absolute configuration of wine lactone 5 has been elucidated by Guth 3 by chemical synthesis of the eight possible stereoisomers and by chromatographic and spectrometric comparisons with natural wine lactone isolated from Gewürztraminer and Scheurebe white wines.…”

Two Newm-Cresol Derivatives and a New Terpene Alcohol from Peppermint Oil

“…The mixture was reacted with peracetic acid to afford (±)-5-methyl-2-(2 1 -oxo-3 1 -butyl)-phenol (1). The spectral properties of the syntheti~product were absolutely identical in all respects with those of compound (1) isolated from peppermint oil.…”