Artemisiyneolides A-K, Guaiane Sesquiterpenoid-Heptatriyne Hybrids through C-C Linkages from Artemisia sieversiana with Antihepatoma Activity.

Artemisiverins A1-A32, structurally diverse guaiane-type sesquiterpenoid dimers from Artemisia sieversiana and their antihepatoma activity.

Artemisiverins A1-A32 (1‒32), undescribed guaiane-type sesquiterpenoid dimers, and 23 known analogues (33‒55) were obtained from Artemisia sieversiana Ehrhart ex Willd. (Asteraceae). The structures of compounds 1‒32 were identified through comprehensive spectroscopic analysis, ECD calculations, and X-ray diffraction. T...

Sesquiterpene lactones and acetylenic derivatives from Artemisia nujianensis and their anti-inflammatory activity.

A phytochemical investigation of Artemisia nujianensis resulted in the isolation of fifteen compounds, comprising two eudesmane-type (1 and 5), two germacrene-type (2 and 3), and five guaiane-type (4 and 6-9) sesquiterpene lactones, together with four polyacetylenes (10-13) and two thiophene-containing acetylenes (14 a...

Exolide A, structurally diverse Ent-18-norbeyerane diterpenoid from the stems of Indian mangrove plant, Excoecaria agallocha Linn.

Exolide A (1), a novel ent-18-norbeyerane diterpenoid possessing a hexacarbocyclic framework, 7/5/6/6/5/3 along with four known terpenoids (2-5) were isolated from the chloroform extract of the stems of Excoecaria agallocha. The structure of 1 was elucidated by comprehensive spectroscopic data analysis (IR, HRESIMS, 1H...

Discovery and Semisynthesis of Arthritacins A–J—Terpestacin-Derived Sesterterpenoids from the Plant Endophytic Fungus Arthrinium sp. HS66

Ten undescribed terpestacin-type sesterterpenoids, arthritacins A–J, together with five known analogues, together with five known analogues (11–15), were obtained from the endophytic fungus Arthrinium sp.

Alpikwangsides A-C, three previously undescribed compounds isolated from the rhizomes of Alpinia kwangsiensis and their NO inhibitory activity.

Schinortriterpenoids with an Unprecedented Oxatricyclo[4.2.1.04,8]nonane Bridged System from Schisandra chinensis

Six new schinortriterpenoids (SNTs), including one structurally unique SNT featuring a caged oxatricyclo[4.2.1.04,8]nonane bridged system (1) and five previously undescribed SNTs (2−6), were isolated from the fruits of Schisandra chinensis. The structures and configurations of compounds 1−6 were elucidated via compre...