piper kadsura/alkaloid

Two new neolignans, piperkadsin A (1) and piperkadsin B (2), as well as 11 known neolignans, three known alkaloids, the highly oxygenated compound (+)-crotepoxide, and stigmasterol were isolated from the stems of Piper kadsura. The anti-inflammatory activities of these compounds were evaluated.

Supercritical fluid chromatography (SFC) today represents an alternative technique in analytical chemistry due to its obvious benefits in kinetic performance and its complementarity to liquid chromatography. In this paper, a series of alkylsiloxane-bonded stationary phases were synthesized and

The protective effects of piperlactam S, an alkaloid isolated from Piper kadsura (Choisy) Ohwi, on lipid peroxidation and free radical-mediated cell injuries were investigated. Piperlactam S (1 to 20 microM) concentration-dependently prevented the copper-catalyzed oxidative modification of human

Macrophages infiltrate tissues in response to chemoattractants including complement 5a (C5a). Infiltrating macrophages clear microorganisms but also can cause tissue damage. We hypothesized that prevention of macrophages from excessive recruitment into infected sites may underlie the