Dammarane-type glycosides and long chain sesquiterpene glycosides from Gynostemma yixingense.
A new dammarane-type glycoside and a new long chain sesquiterpene glycoside, along with nine known compounds 20(S)-ginsenoside Rh1 (3), 20(R)-ginsenoside Rh1 (4), ginsenoside F1 (4), amarantholidoside IV (6), ginsenoside Rc (7), 20(S)-ginsenoside Rg2 (8), 20(R)-ginsenoside Rg2 (9), ginsenoside Rd (10) and gypenoside XLVI (11) were isolated from Gynostemma yixingense. The structures of the new compounds were determined on the basis of spectroscopic analysis, including 1D-, 2D-NMR and ESI-MS techniques as well as by comparison of the spectral data with those of related compounds as 2 alpha,3beta,20(S)-trihydroxydammar-24-ene-3-O-[beta-D-glucopyranosyl((1-->2)-beta-D-glucopyranosyl]-20-O-[beta-D-xylopyranosyl((1-->6)-beta-D-glucopyranoside] (1) (2E,6E)-10-beta-D-glucopyranosyl-1,10,11-trihydroxy-3,7,11-trimethyldodeca-2,6-diene (2).
School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China.
Wen-Juan
WJ
Xiang
Chun-Yu
CY
Guo
Lei
L
Ma
Li-Hong
LH
Hu
D006027:Glycosides / Q000737:chemistry*; D029774:Gynostemma / Q000737:chemistry*; D015394:Molecular Structure; D035261:Plant Components, Aerial / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry*; D000097669:Dammaranes
D006027:Glycosides; D010936:Plant Extracts; D012717:Sesquiterpenes; D014315:Triterpenes; D000097669:Dammaranes