Biomedical subjects

M H Grace

Publications and source records attributed to M H Grace.

4 recordsLinked to original sources

PubMed2001

Polyphenols from Cornulaca monacantha.

The aerial parts of the Egyptian herb Cornulaca monacantha have yielded two new galloyltannin analogs (named monacanthin A and monacanthin B) characterized by protoctechuoyl moiety at C-6, and also a new flavonol glycoside, quercetin-4'-O-beta-D-galactoside. The structures of the new compounds were established by conventional analytical methods and confirmed by spectral analyses. Two known flavonoids, luteolin-7-O-rhamnoside, luteolin-7-O-glucoside, and two known gallotannins, penta-O-galloyl-beta-D-glucose and 1,2,3,6-tetra-O-galloyl-beta-D-glucose were also isolated.

Chenopodiaceae↗

PubMed2001

A new eudesmanolide from Crataegus flava fruits.

A new eudesmanolide, 1beta,9alpha-dihydroxyeudesm-3-en-5beta,6alpha,7alpha,11alphaH-12,6-olide (1), was isolated from Crataegus flava fruits. Its structure was determined by spectroscopic methods.

Crataegus↗

PubMed2001

A new flavone derivative from Ehretia ovalifolia leaves.

From the methylene chloride extract of Ehretia ovalifolia leaves, a new flavone derivative named ovalifolin [3-(3-methyl-1-butenyl)-6-methoxy-5,7,4'-trihydroxy flavone] has been isolated and identified together with the known flavone aglycones apigenin, luteolin and the highly methoxylated flavanol araneosol. The structures of these metabolites have been established on the basis of chemical, chromatographic and spectral methods.

Chromatography, Thin Layer↗

PubMed1996

Hepato-protective effect of daturaolone isolated from Solanum arundo.

The triterpene daturaolone was isolated for the first time from Solanum arundo Mattei. The structure has been elucidated by comparison of MS and 1H NMR spectra with the reported literature data, and was confirmed by 13C NMR. The compound proved its potency in reducing the harmful effects or in maintaining the normal hepatic physiological mechanisms in both acute and chronic hepato-toxic induced liver damage in rats.

Animals↗