Discovery of Undescribed Flavonoid and Rotenoid Derivatives From the Leaves of Derris trifoliata With Their Cytotoxic Activity.

Phytochemical study on the leaves of Derris trifoliata led to the isolation of five rotenoids (3-7) and 10 flavonoid derivatives (1, 2, 8-15). Three of them, (2S)-5,7-dihydroxy-6-(2-hydroxyethyl)-2-(4-hydroxyphenyl)-8-(3-methylbut-2-en-1-yl)chroman-4-one (1), keampferol 3-O-[6-O-(E)-feruloyl-β-d-glucopyranosyl]-(1 → 2)-O-[α-l-rhamnopyranosyl-(1 → 6)-β-d-glucopyranoside (2), and (+)-13-homo-13-oxa-6a,12a-dehydrorotenone (3) were verified by Scifinder as previously undescribed compounds. Their chemical structures were elucidated by using infrared (IR), electronic circular dichroism (ECD), HR-ESI-MS, 1D, and 2D NMR methods.

Three New Sesquiterpenes from the Leaves of Aglaia elaeagnoidea with NO Inhibitory Activity.

Aglanoideas A-C (1-3), three undescribed sesquiterpenes and eleven known compounds (4-14) were isolated from the leaves of Aglaia elaeagnoidea. Their structures including absolute configurations were characterized by using IR, HR-ESI-MS, NMR, and experimental and calculating ECD methods. Compounds 3-5, and 7 showed moderate nitric oxide inhibitory activity with IC values ranging from 53.

Four New Tirucallane Triterpenoids from the Leaves of Ailanthus Triphysa with Anti-Inflammatory Activities.

Isolation and determination of three new compounds from the leaves of Ailanthus triphysa (Dennst.) Alston with their anti-inflammatory activity. Ten tirucallane triterpenes (1-10) including four undescribed compounds, ailantriphysas A-D (1-4), were isolated from the leaves of Ailanthus triphysa (Dennst.

Three New Spirostan Glycosides from Dracaena Cochinchinensis with NO Production Inhibitory and Antimicrobial Activity.

Three new spirostan glycosides, dracochinosides A-C (1-3), and four known steroidal glycosides (4-7) were isolated from the aerial parts of Dracaena cochinchinensis (Lour.) S.C.

Suaedamas A-D: Four New Compounds from the Aerial Parts of Suaeda maritima with Inhibition of NO Production Activity.

Four new compounds, suaedamas A-D (1-4), and seven known ones (5-11) were isolated from the aerial parts of Suaeda maritima. Their chemical structures were evaluated by the IR, HR-ESI-MS, 1D-, and 2D-NMR, experimental and calculated ECD spectra. Compounds 1-6 inhibited nitric oxide production in LPS activated RAW 264.