Results 171 to 180 of about 1,462 (205)
Some of the next articles are maybe not open access.
6α-Hydroxyeurycomalactone, a quassinoid from Eurycoma longifolia
Phytochemistry, 1992Abstract The structure of 6α-hydroxyeurycomalactone, a new C19 quassinoid, isolated from the roots of Eurycoma longifolia has been established from spectral and by single crystal X-ray analysis; eurycomalactone was also isolated. The cytotoxic activity of some quassinoids from this plant is not mediated through DNA cleaving properties.
K.L. Chan +5 more
openaire +1 more source
Highly oxygenated quassinoids from Eurycoma longifolia
Phytochemistry, 1993Abstract Two novel C 19 -skeleton quassinoids, one with a lactonic linkage at C-7 and another with a lactonic linkage at C-12, and seven novel highly oxygenated quassinoids with a C 20 -skeleton were isolated from the leaves of Eurycoma longifolia .
Hiroshi Morita +4 more
openaire +1 more source
A quassinoid glycoside from the roots of Eurycoma longifolia
Phytochemistry, 1989Abstract A new quassinoid glycoside, eurycomanol-2-O-β- d -glycopyranoside, and eurycomanol have been isolated as antimalarial components of Eurycoma longifolia.
K.L. Chan, S. Lee, T.W. Sam, B.H. Han
openaire +1 more source
New Quassinoids from the Roots of Eurycoma longifolia
Chemistry Letters, 1990Abstract A new C19-skeleton quassinoid, named longilactone and three new quassinoids, 13,21-dihydroeurycomanone, 13β,21-dihydroxyeurycomanone and 14,15β-dihydroxyklaineanone were isolated from the roots of Eurycoma longifolia and their structures were established by the spectral evidences.
H. Morita +4 more
openaire +1 more source
Bioavailability and Pharmacokinetic Studies of Eurycomanone fromEurycoma longifolia
Planta Medica, 2005A validated HPLC analysis of eurycomanone (1), a bioactive quassinoid, in rat plasma following oral and intravenous administration of Eurycoma longifolia Jack extract was developed for pharmacokinetic and bioavailability studies. Relatively high plasma eurycomanone concentrations were detected after an intravenous injection of 10 mg/kg extract F2 ...
Bin-Seng, Low +4 more
openaire +2 more sources
Evaluation of the potency activity of aphrodisiac in Eurycoma longifolia Jack
Phytotherapy Research, 2001AbstractThe butanol, methanol, water and chloroform extracts of the roots of Eurycoma longifolia Jack were studied using various tests of potency of treated male rats. The results showed that E. longifolia produced a dose‐dependent, recurrent and significant increase in the episodes of penile reflexes as evidenced by increases in quick flips, long ...
H H, Ang, S, Ikeda, E K, Gan
openaire +2 more sources
Four new quassinoids from the roots of Eurycoma longifolia Jack
Fitoterapia, 2014Seven compounds were isolated from the roots of Eurycoma longifolia, and characterized by comprehensive analysis of 1D and 2D NMR experiments along with single crystal X-ray diffraction. Among them, four new quassinoids were identified and three of them were diastereomers for each other.
Dali, Meng +5 more
openaire +2 more sources
Constituents of Eurycoma longifolia
The Journal of Organic Chemistry, 1970null Le-Van-Thoi, null Nguyen-Ngoc-Suong
openaire +1 more source
Induction of apoptosis by Eurycoma longifolia jack extracts.
Anticancer research, 2005Extracts of the plant Eurycoma longifolia have been shown to possess cytotoxic, antimalarial, anti-ulcer, antipyretic and plant growth inhibition activities. The present study investigated the effects of extracts and their chromatographic fractions from the root of E. longifolia on the growth of a human breast cancer cell line, MCF-7.
Thiam Tsui, Tee +1 more
openaire +1 more source