Nitric Oxide Production Inhibitory Eudesmane-Type Sesquiterpenoids from Artemisia argyi.

Six new eudesmane-type sesquiterpene derivatives, artemargyinins A-F were isolated from the leaves of Artemisia argyi. Their structures were elucidated based on the extensive analysis of spectroscopic data. Artemargyinins A-F feature a lactone ring-opening eudesmane-type sesquiterpene with an isoprenoid group at C(8).

Triterpenoids with -glucosidase inhibitory activity from .

Two new nordammarane-type triterpenoids, 3-acetoxy-20-oxo-21-nordammaran-23-carboxylic acid methyl ester () and 3-acetoxy-17-dammaranic acid (), along with two known cycloartane-type triterpenoids (-), were isolated from the petroleum ether-soluble extract of . Their structures were elucidated based on 1D and 2D NMR spectroscopic data analysis. All compounds were evaluated for their -glucosidase inhibitory activity .