Epioleanolic acid

Storax resin is extracted from Liquidambar orientalis (Hammamelidiaceae) and Altingia and its major components are cinnamyl cinnamate and 3-phenylpropanyl cinnamate, with significant amounts of benzoic and cinnamic acids, and 3-phenylpropanol and cinnamyl alcohols [130,131]. The volatile content is very low and triterpenes (oleanonic and 3-epioleanolic acids and liquid ambronovic acid) have also been observed [130,132]. 

Epioleanolic acid Ekebergia capensis (Meliaceae) mACh-R agonist [uterine smooth... 

American storax and Levant storax are reported to contain similar constituents in highly variable concentrations, including free cinnamic acid (5-15%), 5-10% styracin (cinna-myl cinnamate), about 10% phenylpropyl cinnamate, a resin (storesin) consisting of triterpenic acids (oleanolic and 3-epioleanolic acids) and their cinnamic acid esters, and a volatile oil. The volatile oil present in Levant storax is usually less than 1%, but that in American storax has been reported to range from less than 7% to over 20% (arctander ... 

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