title: New antimycobacterial saponin from Colubrina retusa.
abstract: A new jujubogenin saponin was isolated from the stems of Colubrina retusa and identified as jujubogenin 3-O-alpha-L-arabinofuranosyl (1-->2)-[3-O-(trans)-p-coumaroyl-beta-D-glucopyranosyl (1-->3)]-alpha-L-arabinopyranoside (4) on the basis of chemical and spectroscopic data. The antimycobacterial activity expressed as minimum inhibitory concentration (MIC) for compound 4 was 10 microg/mL.
authors.affiliation: National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, Thad Cochran Research Center, The University of Mississippi, University, Mississippi 38677, USA. helsohly@olemiss.edu
authors.forename: H N
authors.initials: HN
authors.lastname: ElSohly
authors.forename: S
authors.initials: S
authors.lastname: Danner
authors.forename: X C
authors.initials: XC
authors.lastname: Li
authors.forename: A C
authors.initials: AC
authors.lastname: Nimrod
authors.forename: A M
authors.initials: AM
authors.lastname: Clark
mesh_terms: D000995:Antitubercular Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008826:Microbial Sensitivity Tests; D008969:Molecular Sequence Data; D015269:Mycobacterium avium Complex / Q000187:drug effects; D009844:Oligosaccharides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D014315:Triterpenes
chemical_list: D000995:Antitubercular Agents; D004224:Diterpenes; D009844:Oligosaccharides; D014315:Triterpenes; C400159:jujubogenin