蒎烯
蒎烯 | |
---|---|
IUPAC名 (1S,5S)-2,6,6-trimethylbicyclo[3.1.1]hept-2-ene (1S,5S)-6,6-dimethyl-2-methylenebicyclo[3.1.1]heptane | |
识别 | |
CAS号 | 80-56-8((±)-α) 7785-70-8(1R,5R-α) 7785-26-4(1S,5S-α) 2437-95-8(来源未指明) 127-91-3((±)-β) 18172-67-3(1S,5S-β) |
性质 | |
化学式 | C10H16 |
摩尔质量 | 136.24 g·mol⁻¹ |
外观 | 液体 |
密度 | 0.86 g·cm−3 (α, 15 °C)[1][2] |
熔点 | -62 ~ -55 °C |
沸点 | 155 ~ 156 °C |
溶解性(水) | 几乎不溶于水 |
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。 |
蒎烯(Pinene)是一类具有相同骨架结构的天然有机化合物,属于双环单萜,分子式C10H16。
自然界存在α-蒎烯和β-蒎烯,它们之间属双键的位置异构。这两种蒎烯是松节油的主要成分(蒎烯英文名即出自松树),也存在于其它松柏门植物中。在针叶植物以外的种类中也发现其存在,比如一种菊科植物Heterotheca[3]以及大鼠尾草(三齿蒿)。
异构体
生物合成
生物体内,α-蒎烯和β-蒎烯都是由香叶基焦磷酸酯转化生成的。反应机理经过酯基异构化,首先得芳樟醇焦磷酸酯,接着环化重排,然后从碳正离子失去一个质子得到产物。
分布
α-蒎烯是自然界中最广泛分布的萜烯之一,[4]具有强烈的驱虫性。[5]
α-蒎烯主要存在于针叶树等植物。[6]也是毒马草属和鼠尾草属植物精油的主要成分。[7][8]大麻属也含α-蒎烯。[6] 圆柄黄连木的树脂富含蒎烯。松子中也存在。[6]
应用
化学工业上,蒎烯的催化氧化得到各种人工香料,如马鞭烯酮等。[10]
参考资料
- ^ Record of alpha-Pinen in the GESTIS Substance Database from the IFA, accessed on 07-January-2016
- ^ Record of beta-Pinen in the GESTIS Substance Database from the IFA, accessed on 07-January-2016
- ^ Lincoln, D.E., B.M. Lawrence. 1984. The volatile constituents of camphorweed, Heterotheca subaxillaris. Phytochemistry 23(4):933-934
- ^ Noma Y, Asakawa Y (2010). Biotransformation of monoterpenoids by microorganisms, insects, and mammals. In: Baser KHC, Buchbauer G (eds). Handbook of Essential Oils: Science, Technology, and Applications. CRC Press: Boca Raton, FL, pp. 585–736.
- ^ Nerio LS, Olivero-Verbel J, Stashenko E. Repellent activity of essential oils: a review. Bioresour Technol. 2010, 101 (1): 372–378. PMID 19729299. doi:10.1016/j.biortech.2009.07.048.
- ^ 6.0 6.1 6.2 Russo, E. B. Taming THC: potential cannabis synergy and phytocannabinoid-terpenoid entourage effects. British Journal of Pharmacology. 2011, 163 (7): 1344–1364 [2017-05-12]. PMC 3165946 . PMID 21749363. doi:10.1111/j.1476-5381.2011.01238.x. (原始内容存档于2018-02-22).
- ^ Kose EO, Deniz IG, Sarikurkcu C, Aktas O, Yavuz M (2010). Chemical composition, antimicrobial and antioxidant activities of the essential oils of Sideritis erythrantha Boiss. and Heldr. (var. erythrantha and var. cedretorum P.H. Davis) endemic in Turkey. Food Chem Toxicol 48: 2960–2965.
- ^ Ozek G, Demirci F, Ozek T, Tabanca N, Wedge DE, Khan SI et al. (2010). Gas chromatographic-mass spectrometric analysis of volatiles obtained by four different techniques from Salvia rosifolia Sm., and evaluation for biological activity. J Chromatog 1217: 741–748.
- ^ Kasuan, Nurhani. Extraction of Citrus hystrix D.C. (Kaffir Lime) Essential Oil Using Automated Steam Distillation Process: Analysis of Volatile Compounds (PDF). Malyasian Journal of Analytical Sciences. 2013, 17 (3): 359–369 [2017-05-12]. (原始内容存档 (PDF)于2020-08-06).
- ^ U. Neuenschwander, Mechanism of the Aerobic Oxidation of α-Pinene, ChemSusChem. 2010, 3 (1): pp. 75–84, (德文)
- Mann, J.; Davidson, R. S.; Hobbs, J. B.; Banthorpe, D. V.; Harborne, J. B. Natural Products. Harlow, UK: Addison Wesley Longman Ltd. 1994: 309–311. ISBN 0-582-06009-5.