title: Two new C21 steroidal glycosides from Marsdenia tenacissima (ROXB.) WIGHT et ARN.
abstract: Two new C(21) steroidal glycosides, tenacissoside L (1), tenacissoside M (2), were isolated from the stems of Marsdenia tenacissima (ROXB.) WIGHT et ARN. Their structures were elucidated, respectively, by means of chemical and spectral data, including ESI-MS, HR-ESI-MS, 1D-NMR and 2D-NMR.
authors.affiliation: Department of Pharmacognosy, West China College of Pharmacy, Sichuan University, Rennin Nan Road, Chengdu 610041, P.R. China.
authors.forename: Shu
authors.initials: S
authors.lastname: Wang
authors.forename: Yu-Han
authors.initials: YH
authors.lastname: Lai
authors.forename: Bao
authors.initials: B
authors.lastname: Tian
authors.forename: Lin
authors.initials: L
authors.lastname: Yang
mesh_terms: D002855:Chromatography, Thin Layer; D006027:Glycosides / Q000737:chemistry*; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D031101:Marsdenia / Q000737:chemistry*; D018547:Plant Stems / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization; D013256:Steroids / Q000737:chemistry*
chemical_list: D006027:Glycosides; D013256:Steroids; C511392:tenacissoside L; C511393:tenacissoside M