β-Caryophyllene

Вхождение

Three isomers (α-, β-, and γ-caryophyllene) are found in nature. The β-isomer is the most frequently encountered and most abundant. This sesquiterpene hydrocarbon occurs naturally in approximately 60 essential oils, mainly in that of cloves, from which it was originally isolated. The chemical structure has been thoroughly studied; other studies have been conducted on the isolation and the dipolar moment, as well as on its oxide. Reported found in lime peel oil, lemon, grapefruit, guava fruit, raspberry, black currant, carrot, celery seed, cinnamon bark, anise, nutmeg, cumin seed, ginger, pepper, peppermint oil, mace, laurel and caraway herb.

Использование

β-Caryophyllene is notable for having a cyclobutane ring, a rarity in nature. β-Caryophyllene is one of the chemical compounds that contributes to the spiciness of black pepper. β-Caryophyllene was shown to selectively bind to the cannabinoid receptor type-2 (CB2) and to exert significant cannabimimetic antiinflammatory effects in mice.

Подготовка

Isolated from oil of clove stems and separated from eugenol by treating the oil with 7% sodium carbonate solution, extracting with ether, repeating the carbonate treatment on the concentrated extracts, and finally steam distilling.

Определение

ChEBI: A beta-caryophyllene in which the stereocentre adjacent to the exocyclic double bond has S configuration while the remaining stereocentre has R configuration. It is the most commonly occurring form of <greek beta-caryophyllene, occurring in many essential oils, particularly oil of cloves.

Реакции воздуха и воды

Insoluble in water.

Профиль реактивности

The unsaturated aliphatic hydrocarbons, such as BETA-CARYOPHYLLENE, are generally much more reactive than the alkanes. Strong oxidizers may react vigorously with them. Reducing agents can react exothermically to release gaseous hydrogen. In the presence of various catalysts (such as acids) or initiators, compounds in this class can undergo very exothermic addition polymerization reactions.

Пожароопасность

BETA-CARYOPHYLLENE is combustible.

Профиль безопасности

A skin irritant. Combustible liquid. When heated to decomposition it emits acrid smoke and irritating fumes.

Канцерогенность

Caryophyllene showed significant activity as an inducer of the detoxifying enzyme glutathione S-transferase in the mouse liver and small intestine. The ability of natural anticarcinogens to induce detoxifying enzymes has been found to correlate with their activity in the inhibition of chemical carcinogenesis (253a).