No abstract

Chondroitin sulfate (CS) is a glycosaminoglycan, which is composed of an alternating sequence of sulfated and/or unsulfated residue of D-glucuronic acid (GlcA) and D-N-acetylgalactosamine (GalNAc) linked by b(1→3) and b(1→4) bonds.1) CS is a major class of glycosaminoglycans required for the formation of proteoglycans found in the joint cartilage. It has been well established that basic damage to the arthritic cartilage involves the alteration of proteoglycans and collagen fibers.

No abstract

A new and two known lupane-triterpene glycosides were isolated from the hot MeOH fraction of the leaves of Acanthopanax gracilistylus W. W. Smith. Based on the physical properties and spectroscopic data, their chemical structures were determined as acankoreoside A (1), acankoreoside D (2), and 3alpha-hydroxy-lup-23-al-20(29)-en-28-oic acid 28-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl ester (3), respectively. To our best knowledge, compound 3 appears to be novel, which was named as wujiapioside A.