title: Two new steroidal alkaloids from bulbs of Fritillaria lichuanensis.
abstract: Two new steroidal alkaloids, lichuanine (1) and lichuanisinine (2), were isolated from the bulbs of FritillariaLichuanensis P. Li et C.P. Yang. Their structures were determined to be (20S,25R)-5alpha, 14alpha-cevanine-3beta, 6beta-diol (1) and (20S,25S)-5alpha,14alpha-cevanine-3beta,6beta-diol-N-oxide (2) by means of spectral analysis and chemical evidence.
authors.affiliation: Tongji Medical College of Huazhong University of Science and Technology, Faculty of Pharmaceutical Sciences, Wuhan 430030, China.
authors.forename: H-F
authors.initials: HF
authors.lastname: Pi
authors.forename: H-L
authors.initials: HL
authors.lastname: Ruan
authors.forename: Y-H
authors.initials: YH
authors.lastname: Zhan
authors.forename: J-Z
authors.initials: JZ
authors.lastname: Wu
mesh_terms: D000470:Alkaloids / Q000737:chemistry* / Q000302:isolation & purification*; D031410:Fritillaria / Q000737:chemistry*; D015394:Molecular Structure; D018547:Plant Stems / Q000737:chemistry; D013256:Steroids / Q000737:chemistry* / Q000302:isolation & purification*
chemical_list: D000470:Alkaloids; D013256:Steroids; C511966:hupehenirine; C517564:lichuanine; C517565:lichuanisinine