title: Spirostanol sapogenins from the underground parts of Tupistra chinensis.
abstract: Chemical examination of the underground parts of Tupistra chinensis led to the isolation of two new 5beta-spirostane type steroidal sapogenins, tupichigenin B (1) and C (2), together with two known steroidal sapogenins, ranmogenin A (3) and delta25(27)-pentrogenin (4). The structures of 1 and 2 were established as spirost-25(27)-ene-1beta,3beta,4beta,5beta,6b eta-pentaol and 1beta,2beta,3beta,4beta,5beta-pentahydroxyspi rost-25(27)-en-6-one, respectively, on the basis of detailed analysis of their physical and spectral data.
authors.affiliation: Department of Applied Chemistry, Fooyin Institute of Technology, Kaohsiung County, Taiwan.
authors.forename: W B
authors.initials: WB
authors.lastname: Pan
authors.forename: F R
authors.initials: FR
authors.lastname: Chang
authors.forename: Y C
authors.initials: YC
authors.lastname: Wu
mesh_terms: D002681:China; D019668:Liliaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012502:Sapogenins / Q000737:chemistry* / Q000302:isolation & purification; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013056:Spectrophotometry, Ultraviolet; D013150:Spirostans / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D012502:Sapogenins; D013150:Spirostans; C419239:tupichigenin B; C419240:tupichigenin C