The biosynthesis of murayaquinone, a rearranged polyketide
作者:Steven J. Gould、Chris R. Melville、Jiong Chen
DOI:10.1016/s0040-4020(97)00226-3
日期:1997.3
Incorporations of sodium [1,2-C-13(2)]acetate and sodium [1-C-13,O-18(2)]acetate confirmed that murayaquinone, produced by Streptomyces murayamaensis, is a polyketide. However, the labeling patterns revealed that a simple folding of the decaketide intermediate does not lead directly to the final phenanthrene skeleton. Instead a different phenanthrene is apparently formed that undergoes an oxidative cleavage, isomerization, and re-closure to a new phenanthrene skeleton. (C) 1997 Elsevier Science Ltd.
[EN] KINAMYCIN F FOR CANCER TREATMENT<br/>[FR] KINAMYCINE F UTILISÉE DANS LE TRAITEMENT DU CANCER
申请人:UNIV MANITOBA
公开号:WO2009027838A2
公开(公告)日:2009-03-05
Disclosed are methods relating to the use of kinamycin F as an anti-cancer agent. Cytotoxic methods induced by kinamycin F include DNA and protein damage and topoisomerase inhibition. As set forth herein, the anti-cancer effects of kinamycin F may be attributed to, for example, DNA binding, DNA intercalation, topoisomerase Ilα decatenation activity inhibition and/or production of radical species by kinamycin F.
Production of Stealthin C Involves an S–N-Type Smiles Rearrangement
作者:Peng Wang、Gloria J. Hong、Matthew R. Wilson、Emily P. Balskus
DOI:10.1021/jacs.6b10586
日期:2017.3.1
monooxygenase AlpJ, can generate these metabolites from N-acetyl-l-cysteine and l-cysteine, respectively, and that the synthesis of stealthin C likely proceeds via a nonenzymatic S-N-type Smiles rearrangement. This unexpected route to stealthin C reveals a distinct approach to install aromatic amino groups in metabolites and raises questions about the intermediacy of this species in kinamycin production
芳香族聚酮天然产物的运动霉素家族含有被重氮基团取代的非典型安古环素环系统。构建这两种结构特征所涉及的酶化学在很大程度上尚未被探索。在此,我们报告了 Seongomycin(该途径的一种分流产物)和 Stevethin C(一种建议的运动霉素生物合成前体)的体内和体外生产情况。我们证明,黄素依赖性单加氧酶 AlpJ 可以分别从 N-乙酰基-L-半胱氨酸和 L-半胱氨酸生成这些代谢物,并且隐形 C 的合成可能是通过非酶促 SN 型 Smiles 重排进行的。这种意想不到的隐形 C 途径揭示了一种在代谢物中安装芳香氨基的独特方法,并引发了关于该物种在运动霉素生产中的中间作用的问题。
Total Synthesis of the Diazobenzofluorene Antibiotic (−)-Kinamycin C
作者:Xiaoguang Lei、John A. Porco
DOI:10.1021/ja066621v
日期:2006.11.1
The enantioselective totalsynthesis of the diazobenzofluorene antibiotic (-)-kinamycin C is reported. The approach involves tartrate-mediated, asymmetric nucleophilic epoxidation of a functionalized quinone monoketal to construct the highly substituted D-ring.
报道了重氮苯并芴抗生素 (-)-kinamycin C 的对映选择性全合成。该方法涉及酒石酸盐介导的功能化醌单缩酮的不对称亲核环氧化,以构建高度取代的 D 环。