Kinamycin Biosynthesis. Synthesis, Isolation, and Incorporation of Stealthin C, an Aminobenzo[<i>b</i>]fluorene
作者:Steven J. Gould、Chris R. Melville、Martha C. Cone、Jiong Chen、John R. Carney
DOI:10.1021/jo961486y
日期:1997.1.1
biosynthesis of the benzo[b]fluorene antibiotic, kinamycin D, has been identified. 11-Amino-4,5,9-trihydroxy-2-methyl-10H-benzo[b]fluoren-10-one was synthesized and shown to be present in extracts of Streptomyces murayamaensisfermentations. A deuterated sample was prepared and shown to be specifically incorporated into kinamycin D. This new intermediate, now named stealthin C, is also the probable hydroxylation
resulted in the isolation of a variety of angucycline aromatic polyketides, including four racemic aminobenzo[b]fluorenes stealthins D⁻G (9⁻12) harboring a stealthin C-like core skeleton with an acetone or butanone-like sidechain. Their structures were elucidated on the basis of nuclear magnetic resonance (NMR) spectroscopic data and X-ray diffraction analysis. A plausible mechanism for the formation of