Complete (1)H and (13)C NMR assignments of four new oligosaccharides and two new glycosides from Periploca forrestii.

Magn Reson Chem. 2009 Apr 28; Feng J, Zhao WFour new oligosaccharides (1-4), one new pregnane glycoside (5), and one new cardiac glycoside (6) were isolated from the roots of Periploca forrestii Schltr. (Asclepiadaceae), a traditional Chinese medicine used for the treatment of rheumatoid arthritis and wounds. Their structures were characterized on the basis of extensive analysis of NMR ((1)H, (13)C NMR, (1)H-(1)H COSY, HSQC, HMBC, TOCSY and ROESY) spectra. Copyright (c) 2009 John Wiley & Sons, Ltd.