Two new 30-norfriedelane triterpenes from (P. Beauv.) Gilg (Achariaceae).

The chemical investigation of the methanolic root extract of (P. Beauv.) Gilg exhibited two new 30-norfriedelane triterpenes, glaucalactones A and B (), together with eight known compounds, caloncobalactone (), friedelin (), friedelanol ), 3-oxo-friedelan-28-oic acid (), stigmasterol (), -sitosterol (), -sitosterol-3---D-glucopyranoside () and pentacosanoic acid ().

A New Antimicrobial Phenylpropanol from the Leaves of Stapf. (Apocynaceae) Inhibits Pathogenic Gram-Negative Bacteria.

A chemical investigation of the leaves of Stapf. led to the isolation of a new phenylpropanol derivative, namely irisdichototin G (), together with nine known compounds, including one polyol derivative, dambonitol (); three alkaloids, 10-hydroxycoronaridine (), voacristine () and vobasine (); two triterpenes lupeol (), betulinic acid () and three sterols, sitosterol (), sitosterol-3-O-β-D-glucopyranoside () and stigmasterol (). The structure of the new compound, as well as those of the known ones, was established by means of spectroscopic methods: NMR analysis ( and C NMR, 1H-1H-COSY, HSQC, HMBC and NOESY), high-resolution mass spectrometry (HR-ESI-MS) and comparisons with previously reported data.

New furoquinoline alkaloid and flavanone glycoside derivatives from the leaves of Oricia suaveolens and Oricia renieri (Rutaceae).

Fractionation of the methanol extract of the leaves of Oricia renieri and Oricia suaveolens (Rutaceae) led to the isolation of 13 compounds including the hitherto unknown furoquinoline alkaloid named 6,7-methylenedioxy-5-hydroxy-8-methoxy-dictamnine (1) and a flavanone glycoside named 5-hydroxy-4'-methoxy-7-O-[α-L-rhamnopyranosyl(1‴→5″)-β-D-apiofuranosyl]-flavanoside (2), together with 11 known compounds (3-13). The structures of the compounds were determined by comprehensive analyses of their 1D and 2D NMR, mass spectral data and comparison. All compounds isolated were examined for their activity against human carcinoma cell lines.