Biological & Pharmaceutical Bulletin 2003-04-01

Antiinflammatory activity of alpha-hederin methyl ester from the alkaline hydrolysate of the butanol fraction of Kalopanax pictus bark extract.

Da Wei Li, Jin Ee Hyun, Choon Sik Jeong, Yeong Shik Kim, Eun Bang Lee

Index: Biol. Pharm. Bull. 26(4) , 429-33, (2003)

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Abstract

Three antiinflammatory saponin components were isolated from the alkaline hydrolysate of a butanol-soluble portion of Kalopanax pictus bark extract through an in vivo activity-guided fractionation procedure. The hydrolysate showed inhibition of adjuvant induced arthritis in rats. After further fractionation, the ethyl acetate fraction exhibited antiarthritic activity, which resulted in the isolation of alpha-hederin, alpha-hederin methyl ester, and kalopanaxsaponin I. All compounds showed inhibition of vascular permeability in mice, but only alpha-hederin methyl ester showed anticarrageenan activity in rats and antiarthritic activity in rats and mice.