P-Menthane-8-thiol-3-one

Buchu leaf Agathosma betulina (Ber-gius) PUlans, A. crenulata (L.) PUlans trfl s-p-Menthane-8-thiol-3-one and its S-acetate (characteristic minor components), (+)-limonene (10)... [Pg.82]

The reaction of pulegone or isopulegone with hydrogen sulphide in triethyl-amine leads to the interesting p-menthane-8-thiol-3-one (163), a constituent of Buchu leaf oil Barosina betulina Bartl., Rutaceae), which has a black-currant flavour. Reductive dimerization of pulegone affords the alcohol (164), which... [Pg.31]

Bohlmann has isolated another naturally occurring thymol epoxy-ester (c/. Vol. 1, p. 34 Vol. 3, p. 46), this time from Wedelia forsteriana Compound (137)has been isolated from Pluchea odorata. Pseudomonas fluorescens converts (-)-menthone into cis- and trans-(138). In addition to known (Vol. 2, p. 31) p-menthane-8-thiol-3-ones in Buchu leaf oil, 5-methyl dnd S-acetyl derivatives have been isolated... [Pg.29]

Fig, 6,42 Synthesis and configurational cGC-analysis of p-menthane-8-thiol-3-one (from ref [102])... [Pg.689]

D. Lamparsky and P. Schudel. p-Menthane-8-thiol-3-one, a new component of Buchu leaf oil. Tetrahedron Lett. 36, 3323-3326 (1971). [Pg.702]

Mercaptoimidazoline. See Ethylene thiourea, 8-Mercapto-p-menthane-3-one. See p-Mentha- s-thiol-3-one... [Pg.2528]

Of the few known terpene compounds that contain heteroatoms such as nitrogen or sulfur, the thiol 8-mercapto-p-menthan-3-one described below has qualitatively important applications as a fragrance and flavor substance. The second thiol, -p-menthene-8-thiol, is described because its odor threshold value is far lower than that of most other fragrance and flavor materials. [Pg.74]

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