Two new biologically active cyclopentenones from Dasyscyphus sp. A47-98.
Two new biological active cyclopentenones VM 4798-1a (1a) and VM 4798-1b (1b) were obtained as a 3:1 inseparable mixture from fermentations of Dasyscyphus sp. A47-98. The mixture of the two isomers showed cytotoxic and weak antibacterial and antifungal properties. VM 4898-1 (2-hydroxy-3,4-dimethyl-2-cyclopenten-1-one, 4), produced by another Dasyscyphus sp. showed no significant biological activity. The structures were elucidated by NMR techniques.
Mierau
Viktor
V
Institut für Biotechnologie und Wirkstoff-Forschung, Erwin-Schroedinger-Str. 56, D-67663 Kaiserslautern, Germany.
Sterner
Olov
O
Anke
Timm
T
D000900:Anti-Bacterial Agents / Q000096:biosynthesis* / Q000302:isolation & purification / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D002851:Chromatography, High Pressure Liquid; D004354:Drug Screening Assays, Antitumor; D005285:Fermentation; D005658:Fungi / Q000187:drug effects / Q000378:metabolism*; D006367:HeLa Cells; D006801:Humans; D007783:Lactones / Q000302:isolation & purification / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D019384:Nucleic Acid Synthesis Inhibitors / Q000494:pharmacology; D011500:Protein Synthesis Inhibitors; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
D000900:Anti-Bacterial Agents; D007783:Lactones; D019384:Nucleic Acid Synthesis Inhibitors; D011500:Protein Synthesis Inhibitors; C488932:VM 4798-1a; C488933:VM 4798-1b