title: Cytotoxic 10-(indol-3-yl)-[13]cytochalasans from the fungus Chaetomium elatum ChE01.
abstract: Nine 10-(indol-3-yl)-[13]cytochalasans such as a new chaetoglobosin V (1); two new natural products, prochaetoglobosin III (2) and prochaetoglobosin III(ed) (3); six known chaetoglobosins B-D (4-6), F (7), and G (8) and isochaetoglobosin D (9) in addition to two known sterols, 24(R)-5alpha,8alpha-epidioxyergosta-6-22-diene-3beta-ol (10) and ergosterol (11), were isolated from the fungus Chaetomium elatum ChE01. The structures of these compounds were elucidated by spectroscopic methods. Compounds 1-9 showed cytotoxicity against the human breast cancer (IC(50) 2.54-21.29 microM) and cholangiocarcinoma cell lines (IC(50) 3.41-86.95 microM).
authors.affiliation: Natural Products Research Unit, Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand.
authors.forename: Santi
authors.initials: S
authors.lastname: Thohinung
authors.forename: Somdej
authors.initials: S
authors.lastname: Kanokmedhakul
authors.forename: Kwanjai
authors.initials: K
authors.lastname: Kanokmedhakul
authors.forename: Veerapol
authors.initials: V
authors.lastname: Kukongviriyapan
authors.forename: Ornanong
authors.initials: O
authors.lastname: Tusskorn
authors.forename: Kasem
authors.initials: K
authors.lastname: Soytong
mesh_terms: D001650:Bile Duct Neoplasms / Q000188:drug therapy / Q000473:pathology; D001653:Bile Ducts, Intrahepatic / Q000473:pathology; D001943:Breast Neoplasms / Q000188:drug therapy* / Q000473:pathology; D045744:Cell Line, Tumor; D002597:Chaetomium / Q000737:chemistry*; D018281:Cholangiocarcinoma / Q000188:drug therapy* / Q000473:pathology; D004354:Drug Screening Assays, Antitumor; D005260:Female; D006801:Humans; D026121:Indole Alkaloids / Q000008:administration & dosage / Q000302:isolation & purification / Q000494:pharmacology*; D020128:Inhibitory Concentration 50
chemical_list: D026121:Indole Alkaloids; C019290:chaetoglobosins