title: [A new steroidal glycoside from fermented leaves of Agave americana].
abstract: OBJECTIVE
  To investigate the constituents of fermented leaves of Agave americana, and discover new compounds.
  
  
  METHODS
  Compounds were purified with silica gel and C8 reverse--phase silica gel column chromatography. The structures were elucidated by chemical and spectroscopic evidence.
  
  
  RESULTS
  Three steroidal compounds were obtained and their structures were identified as (25R)-5 alpha-spirostan-3 beta, 6 alpha, 23 alpha-triol 6-O-beta-D-glucopyranoside(1), (25R)-5 alpha-spirostan-3 beta, 6 alpha, 23 alpha-triol-3, 6-di-O-beta-D-glucopyranoside (cantalasaponin-1) (2) and (25R)-5 alpha-spirostan-3 beta, 6 alpha, 23 alpha-triol(hongguanggenin) (3).
  
  
  CONCLUSIONS
  Compound 1 is new compound, named agamenoside C.
authors.affiliation: State Key Laboratory of Phytochemistry and Western Plant Resources in China.
authors.forename: Jian-ming
authors.initials: JM
authors.lastname: Jin
authors.forename: Xi-kui
authors.initials: XK
authors.lastname: Liu
authors.forename: Chong-ren
authors.initials: CR
authors.lastname: Yang
mesh_terms: D027882:Agave / Q000737:chemistry*; D005285:Fermentation; D006027:Glycosides / Q000302:isolation & purification; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D006027:Glycosides; D014315:Triterpenes; C477183:agamenoside C