Homocapsaicin

Homocapsaicin
Names
IUPAC name
(6E)-N-(4-Hydroxy-3-methoxybenzyl)-8-methyldec-6-enamide
Other names
Homocapsaicin II, N-Vanillyl-8-methyldec-6-(E)-enamide, trans-N-Vanillyl-8-methyldec-6-enamide, N-(4-Hydroxy-3-methoxybenzyl)-8-methyldec-trans-6-enamide, Vanillylamide of 8-methyldec-trans-6-enoic acid, HC
Identifiers
3D model (JSmol)
ChemSpider
Properties
C19H29NO3
Molar mass 319.43 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
Homocapsaicin
Heat Above Peak
Scoville scale 8,600,000 SHU

Homocapsaicin is a capsaicinoid and analog and congener of capsaicin in chili peppers (Capsicum). Like capsaicin it is an irritant. Homocapsaicin accounts for about 1% of the total capsaicinoids mixture and has about half the pungency of capsaicin. Pure homocapsaicin is a lipophilic colorless odorless crystalline to waxy compound. On the Scoville scale it has 8 600 000 SHU (Scoville heat units). Homocapsaicin isolated from chili pepper has been found in two isomeric forms, both with a carbon-carbon double bond at the 6 position (numbered from the amide carbon) on the 10-carbon acyl chain. One isomer has an additional carbon, a methyl group, at the 8 position and the other has a methyl group at the 9 position. Homocapsaicin (6-ene-8-methyl) is the more abundant isomer. Homocapsaicin with the double bond at the 7 position has never been found in nature, though its structure is widely reported on the Internet and, unfortunately, even in the scientific literature. Details of the misidentification have been published.[1]

See also

References

  1. ↑ Thompson, R.Q. “Homocapsaicin: nomenclature, indexing, and identification” Flavour and Fragrance Journal 2007, 22, 243-248.


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