Complete 1Hand 13C NMR assignments of four new oligosaccharides and two new glycosides from periploca forrestii

Four new oligosaccharicles (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 (H-1, C-13 NMR, H-1-H-1 COSY, HSQC, HMBC, TOCSY and ROESY) spectra. Copyright (C) 2009 John Wiley & Sons, Ltd.