Cytotoxic bianthrone C-glycosides from asphodel's aestivum tubers

Aestivin and 10'-deoxyaestivin are new class of cytotoxic bianthrone C-glycosides that have been isolated from the ethyl acetate extract of tuberous roots A. aestivus Brot. On the basis of spectral and chemical evidences, their structures were established as 10-C-[beta-D- xylopyranosyl]-1, 1, 8, 8', 10, 10'-hexahydroxy-3, 3'-dimethyl-10, 7-bianthracene-9, 9'-dione, and 10', C-[beta-D-xylopyranosyl]-1, 1', 8, 8', 10-pentahydroxy-3, 3'-dimethyl-10, 7'-bianthracene-9, 9'-dione, respectively. In addition, chrysophanol, asphodelin and olamodin were isolated and identified. Biologically, aestivin and 10'-deoxyaestivin proved to possess potent cytotoxic activity against mouse P388 leukemia and V-79 cells

Macro-and micromorphology of calchicum ritchii R BR

The macro- and micromorphological characters of the root, corm, leaf and inflorescence of Colchicum ritchii R. Br. were studied to find out the diagnostic features of these organs in both the entire and powdered forms

Anthraquinones, sterols and steryl glycoside of emex spinosus [L] campd

Phytochemical investigation of Emex spinosus [L.] Campd. [Polygonaceae] revealed the presence of five anthraquinone pigments, chrsysophanol, physcion, emodin, aloe emodin and chrysophanin, a mixture of three delta5 sterols [beta-sitosterol, stigmasterol, and campesterol] in addition to beta-sitosterol-3 beta-D- glucoside. Identification was performed by physical, chemical and spectroscopic methods

Steroid and triterpenoid constituents of launaea resedifolia [L] kuntze

Phytochemical investigation of Launaea of resedifolia [L.] Kuntze [Asteraceae] revealed the presence of the triterpenes varies directly as alpha-amyrin, moretenol and lupeol, their acetate acetate derivatives as well as their esters with a complex series of long chain fatty acids. In addition, the steroid compound delta7 stigmastenol and its 3-0-glucoside were isolated. Identification was performed by physical, chemical and spectroscopic methods

Chemical investigation of the aerial parts of anthemis melampodina del

The light petroleum extract of Anthemis melampodina Del. fam. Compositae afforded two sesquiterpene lactones [parthenolide and 8-deoxycumambrin B] and a mixture of B-sitosterol, stigmasterol and campesterol. The ether extract afforded four flavonol aglycones. They were identified as axillarin [3,6-dimethoxy-5,7,3'4'-tetrahydroxhflavone], rhamnetin, quercetin and patuletin [6-methoxy quercetin]

Anthraquinones and C-flavonoids of Rumex cyrius murb

Phytochemical examination of Rumex cyprius Murb. [polygonaceae] aerial parts revealed the presence of two anthraquinones viz. chrysophanol and emodin and three non-hydrolysable C-flavonoid glucosides identified as isovitexin, orientin and isoorientin, in addition to quercetin

Cucurbitacins and a steryl glucoside of bryonia cretical growing in Egypt

The phytochemical investigation of the roots of Bryonia cretica L. revealed the presence of cucurbitacins E, I and L, in addition to B- sitosterol-3-O-glucoside. The identification was performed by physical, chemical and spectroscopic methods