title: A new cytotoxic spiroketal from the myxobacterium Sorangium cellulosum.
abstract: A new spiroketal, spirodienal B (1), was isolated from culture extracts of S. cellulosum. Its structure was elucidated by spectroscopic analysis. In addition to 1, the strain produced a second, closely related antibiotic, spirodienal. Both compounds demonstrated potent cytotoxicity against human tumor cells. Against human tumor cells such as HCT-15, the activity of 1 was more than 4000 times stronger than that of doxorubicin in terms of IC(50).
authors: College of Pharmacy, Sungkyunkwan University, Suwon 440-746, Korea.
authors: Jong Hwan
authors: JH
authors: Kwak
authors: Jong-Woong
authors: JW
authors: Ahn
mesh_terms: D000970:Antineoplastic Agents / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D004354:Drug Screening Assays, Antitumor; D005663:Furans / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D006801:Humans; D015394:Molecular Structure; D009231:Myxococcales / Q000737:chemistry*; D013141:Spiro Compounds / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*
chemical_list: D000970:Antineoplastic Agents; D005663:Furans; D013141:Spiro Compounds; C542602:spirodienal B; C520774:spiroketal