Chemical constituents from Portulaca oleracea and their bioactivities

Chemical constituents of Excoecaria acerifolia and their bioactivities.

A new kaurane diterpenoid, 3alpha,18-dihydroxy-3beta,20-epoxykaur-15-ene (1), was isolated from the aerial parts of Excoecaria acerifolia (Euphorbiaceae) together with 16 known compounds. Their structures were identified by extensive spectral analysis, especially 2D NMR techniques. Antiangiogenic effects of compounds 1-6 and 9-17 were evaluated using a zebrafish model, with compound 9 being act...

Chemical constituents and bioactivities of plants from the genus Paeonia.

Chemical constituents and bioactivities of Clinacanthus nutans aerial parts.

Four new sulfur-containing compounds, named clinamides A-C (1-3), and 2-cis-entadamide A (4), were isolated together with three known compounds from the bioactive ethanol extract of the aerial parts of Clinacanthus nutans. These secondary metabolites possess sulfur atoms and acrylamide functionalities. The structures of the isolated components were established by interpretation of their spectro...

The Constituents of Michelia compressa var. formosana and Their Bioactivities

Phytochemical investigation of the heartwood of Michelia compressa afforded forty-four compounds, which were identified by comparison of experimental and literature analytical and spectroscopic data. Some compounds were evaluated for their anti-inflammatory and anticancer bioactivities. The result showed that soemerine (1) and cyathisterol (2) exhibited significant nitric oxide (NO) inhibition,...

Antibacterial Attributes of Apigenin, Isolated from Portulaca oleracea L.

The flavonoid apigenin was isolated from aerial part of P. oleracea L. The dried sample of plant was powdered and subjected to soxhlet extractor by adding 80 mL of ethanol : water (70 : 30). The extract was centrifuged at 11000 rpm for 30 min; supernatant was taken for further use. The fraction was concentrated and subjected to PTLC. The R f value of isolated apigenin was calculated (0.82). Pur...