Four new hasubanan-type alkaloids, cepharatines A−D (1−4), were isolated from the leaves and stems of Stephania cepharantha, and their structures were elucidated by spectroscopic analysis. The structu
The lomaiviticins are dimeric genotoxic metabolites that contain unusual diazocyclopentadiene functional groups and 2–4 deoxyglycoside residues. Because only 6 of 19 carbon atoms in the monomeric agly
Fifteen new lignans, gymnothelignans A–O (1–15), bearing tetrahydrofuran with variable conformations belonging to three potentially related skeletons were isolated from Gymnotheca chinensis Decne. The
The first total synthesis of the dimeric tetrahydroxanthone ascherxanthone A has been accomplished. This synthetic strategy features (1) enantioselective intramolecular allylic C–H oxidation to constr
