Taraxasterol Acetate Research Articles

Studies on antiinflammatory activity of taraxasterol acetate from Echinops echinatus in rats and mice

AbstractTaraxasterol acetate, a triterpenoid found in several plant species, demonstrated antiinflammatory activity in albino rats against carrageenan, formaldehyde and adjuvant induced inflammations in doses between 10 and 100 mg/kg. Quantitative comparison of the activities of the alcoholic extract of Echinops echinatus, and taraxasterol acetate extracted from the former, suggested the presence of one or more minor, but probably more potent, antiinflammatory constitutent(s) in the original plant extract.

5-Hydroxy-3,6,7,2′,5′-pentamethoxyflavone from Inula grantioides

A new flavonol, grantioidin, has been isolated from Inula grantioides and its structure was determined as 5-hydroxy-3,6,7,2′,5′-pentamethoxyflavone. β-Sitosterol, lupeol, taraxasterol, taraxasterol acetate and triacontanol were also isolated for the first time from this plant.

PHYTOCHEMICAL STUDY OF EUPHORBIA HETEROPHYLLA L. CULTIVATED IN EGYPT

A phytochemical study of Euphorbia heterophylla L. cultivated in Egypt is presented. b-amyrin, b-sitosterol taraxasterol acetate, b-sitosterol glucoside and hydrocarbon with ketonic group were isolated from pet. ether extract of the herb. While lupeol acetate, teraxasterol, b-sitosterol and b-sitosterol glucoside were isolated from ether extract of the root. In addition quercetin 3-methyl quercetin, kaempferol-3-0-arabinoside. kaempferol-3-0-glucoside and kaempferol-7-0-glucoside sere isolated from the ethyl acetate extract of the herb. The identification of these compounds was based on physical, chemical and spectral analysis.

An Unusual Triterpene Ester in a Compositaceous Plant,Carduus getulusPomel

Fractionation of the light petroleum extract of the aerial parts of Carduus getulus Pomel afforded, in addition to taraxasterol acetate and taraxasterol, erythrodiol 3-acetate which has never been reported in the Compositae before.

Benzine Extract from Sonchus asper-A Rich Source of Pentacyclic Triterpenoids

Pentacyclic triterpene alcohols (9.8%), their acetates (16.1%), and their long chain fatty acid esters (4.6%) represent 30.5% of the benzine extract from the herb of Sonchus asper Vill. (Compositae). The composition of triterpene alcohols was : α-amyrin (4%), β-amyrin (8%), germanicol (6%), Ψ-taraxasterol (17%), taraxasterol (36%), lupeol (28%), and other unidentified components (1%); and that of triterpene acetates was : α-amyrin acetate (3%), β-amyrin acetate (8%), germanicol acetate (5%), Ψ-taraxasterol acetate (19%), taraxasterol acetate (21%), and lupeol acetate (44%). Triterpene alcohol moiety of the long chain fatty acid esters was Ψ-taraxasterol only. The results indicate that the benzine extract from S. aspen Vill, can be used as a good source of pentacyclic triterpenoids.

ChemInform Abstract: OXIDATION OF TARAXASTEROL AND ITS ACETATE BY SELENIUM DIOXIDE. FORMATION OF SELENOXIDES

Chemischer InformationsdienstVolume 10, Issue 41 Natural Products ChemInform Abstract: OXIDATION OF TARAXASTEROL AND ITS ACETATE BY SELENIUM DIOXIDE. FORMATION OF SELENOXIDES P. P. PAI, P. P. PAISearch for more papers by this authorG. H. KULKARNI, G. H. KULKARNISearch for more papers by this author P. P. PAI, P. P. PAISearch for more papers by this authorG. H. KULKARNI, G. H. KULKARNISearch for more papers by this author First published: October 9, 1979 https://doi.org/10.1002/chin.197941313Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume10, Issue41October 9, 1979 RelatedInformation

ω–TARAXASTEROL ACETATE FROMINULA VISCOSA

ω–Taraxasterol acetate was isolated from the leaves of Inula viscosa L. It was identified by IR, NMR and Mass spectral methods as well as standard sample comparison.