215798-03-1Relevant articles and documents
Evaluation of Inhibitory Activities of UK-2A, an Antimycin-Type Antibiotic, and Its Synthetic Analogues against the Production of Anti-inflammatory Cytokine IL-4
Usuki, Yoshinosuke,Ishii, Saho,Ijiri, Minako,Yoshida, Ken-Ichi,Satoh, Tetsuya,Horigome, Satoru,Yoshida, Izumi,Mishima, Takashi,Fujita, Ken-Ichi
supporting information, p. 2590 - 2594 (2018/12/13)
The inhibitory activities of the antimycin-class antibiotics UK-2A, antimycin A, and splenocin B against the production of anti-inflammatory cytokine IL-4, which is related to IgE-mediated allergic responses in rat basophilic leukemia (RBL-2H3) cells, were evaluated. Although antimycin A and splenocin B showed cytotoxicity at concentrations at which IL-4 release from the cells was restricted, UK-2A was found to restrict IL-4 release without cytotoxicity. Three UK-2A analogues (4-6) were then synthesized and assessed. Compound 5 restricted IL-4 release dose-dependently without cytotoxicity, and its effect was more potent than that of UK-2A.
Enantioselective total synthesis of the antifungal dilactone, UK-2A: The determination of the relative and absolute configurations
Shimano, Masanao,Shibata, Tetsuo,Kamei, Noriyuki
, p. 4363 - 4366 (2007/10/03)
The synthesis of the antifungal dilactone, UK-2A, is described. In addition to providing a workable synthetic route to this potent antifungal antibiotic, this has allowed us to determine the assignment of the relative and absolute configurations in the nine-membered ring.