title: Antitubercular cassane furanoditerpenoids from the roots of Caesalpinia pulcherrima.
abstract: Activity-guided fractionation of a root extract of Caesalpinia pulcherrima led to the isolation of two cassane-furanoditerpenoids, 6 beta-benzoyl-7 beta-hydroxyvouacapen-5 alpha-ol (1) and 6 beta-cinnamoyl-7beta-hydroxyvouacapen-5 alpha-ol (2). Compound 2 showed strong antitubercular activity with a minimum inhibitory concentration (MIC) of 6.25 microg/mL, whereas the benzoyl analogue (1) was less active (MIC 25 microg/mL). Both compounds expressed moderate cytotoxic activity towards KB (human oral carcinonoid cancer), BC (human breast cancer) and NCl-H187 (small cell lung cancer) cell lines.
authors.affiliation: Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand.
authors.forename: Netnapa
authors.initials: N
authors.lastname: Promsawan
authors.forename: Prasat
authors.initials: P
authors.lastname: Kittakoop
authors.forename: Surat
authors.initials: S
authors.lastname: Boonphong
authors.forename: Pakawan
authors.initials: P
authors.lastname: Nongkunsarn
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D000995:Antitubercular Agents / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D029911:Caesalpinia; D045744:Cell Line, Tumor / Q000187:drug effects; D004224:Diterpenes / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D006801:Humans; D008826:Microbial Sensitivity Tests; D009169:Mycobacterium tuberculosis / Q000187:drug effects*; D008517:Phytotherapy; D010936:Plant Extracts / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D018517:Plant Roots
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D000995:Antitubercular Agents; D004224:Diterpenes; D010936:Plant Extracts