Cyclothialidine, a novel DNA gyrase inhibitor. II. Isolation, charactenzation and structure elucidation.
作者:TSUTOMU KAMIYAMA、NOBUO SHIMMA、TATSUO OHTSUKA、NOBORU NAKAYAMA、YOSHIKO ITEZONO、NAOKI NAKADA、JUNKO WATANABE、KAZUTERU YOKOSE
DOI:10.7164/antibiotics.47.37
日期:——
Cyclothialidine is a novel DNA gyrase inhibitor produced by Streptomyces filipinensis NR 0484. It was isolated from the culture broth by charcoal adsorption, Diaion HP-21, Amberlite CG-50, DEAE Toyopearl, and Toyopearl HW-40 SF column chromatography. The structure of cyclothialidine was determined to be a unique twelve membered lactone by amino acid analysis and various 2D-NMR experiments. Cyclothialidine inhibited Escherichia coli DNA gyrase with an IC50 of 30 ng/ml.
Cyclothialidine 是一种由丝状链霉菌 NR 0484 产生的新型 DNA 回旋酶抑制剂。通过木炭吸附、Diaion HP-21、Amberlite CG-50、DEAE Toyopearl 和 Toyopearl HW-40 SF 柱层析,从培养液中分离出了环硫脒。通过氨基酸分析和各种二维核磁共振实验,确定了环硫脒是一种独特的十二内酯。环硫脒抑制大肠杆菌 DNA 回旋酶的 IC50 值为 30 ng/ml。