Pregnanes and pregnane glycosides from Marsdenia roylei.
Two pregnanes namely desacylkondurangogenin C (1) and deniagenin (3, new) and two new pregnane glycosides designated as denin (5) and marsin (12) have been isolated from chloroform soluble extract of dried stem of Marsdenia roylei. Chemical and spectroscopic evidences are consistent with the structures of deniagenin, denin and marsin as 3beta, 11alpha, l2beta, 14beta, 17beta, 20-hexahydroxy pregn-5-ene; desacylkondurangogenin C-3-O-alpha-D-glucopyranosyl-(1-->4)-O-alpha-L-fucopyranoside and ketocalogenin-3-O-alpha-L-fucopyranoside, respectively.
Gupta
Vijay S
VS
Department of Chemistry, Lucknow University, -226 007, Lucknow, India.
Kumar
Alok
A
Deepak
Desh
D
Khare
Anakshi
A
Khare
Naveen K
NK
D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification*; D031101:Marsdenia / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010936:Plant Extracts / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D011278:Pregnanes / Q000737:chemistry* / Q000302:isolation & purification*; D016339:Spectrometry, Mass, Fast Atom Bombardment
D006027:Glycosides; D010936:Plant Extracts; D011278:Pregnanes