2',3'-O-isopropylidene-5'-O-(sulfamoyl)aristeromycin | 918644-13-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 咪唑并嘧啶类
• 英文名称: 2',3'-O-isopropylidene-5'-O-(sulfamoyl)aristeromycin
• 英文别名: [(3aS,4R,6R,6aR)-4-(6-aminopurin-9-yl)-2,2-dimethyl-4,5,6,6a-tetrahydro-3aH-cyclopenta[d][1,3]dioxol-6-yl]methyl sulfamate
• CAS: 918644-13-0
• 化学式: C₁₄H₂₀N₆O₅S
• 分子量: 384.416
• InChiKey: WVDDIENZULDPJT-OYBPUVFXSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.9
• 重原子数：
  26
• 可旋转键数：
  4
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.64
• 拓扑面积：
  166
• 氢给体数：
  2
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  N-hydroxysuccinimidyl 2-(methoxymethyloxy)benzoate 、 2',3'-O-isopropylidene-5'-O-(sulfamoyl)aristeromycin 在 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 16.0h， 生成 [(3aS,4R,6R,6aR)-4-(6-aminopurin-9-yl)-2,2-dimethyl-4,5,6,6a-tetrahydro-3aH-cyclopenta[d][1,3]dioxol-6-yl]methyl N-[2-(methoxymethoxy)benzoyl]sulfamate
  参考文献：
  名称：

  Antitubercular Nucleosides That Inhibit Siderophore Biosynthesis:  SAR of the Glycosyl Domain

  摘要：

  Tuberculosis is the leading cause of infectious disease mortality in the world by a bacterial pathogen. We previously demonstrated that a bisubstrate inhibitor of the adenylation enzyme MbtA, which is responsible for the second step of mycobactin biosynthesis, exhibited potent antitubercular activity. Here we systematically investigate the structure-activity relationships of the bisubstrate inhibitor glycosyl domain resulting in the identification of a carbocyclic analogue that possesses a K-I(app) value of 2.3 nM and MIC99 values of 1.56 mu M against M. tuberculosis H37Rv. The SAR data suggest the intriguing possibility that the bisubstrate inhibitors utilize a transporter for entry across the mycobacterial cell envelope. Additionally, we report improved conditions for the expression of MbtA and biochemical analysis, demonstrating that MbtA follows a random sequential enzyme mechanism for the adenylation half-reaction.

  DOI：

  10.1021/jm061068d
• 作为产物：
  描述：

  芒霉素 在 甲烷磺酸 、 sodium hydride 作用下， 以 乙二醇二甲醚 、 丙酮 为溶剂， 反应 16.27h， 生成 2',3'-O-isopropylidene-5'-O-(sulfamoyl)aristeromycin
  参考文献：
  名称：

  Antitubercular Nucleosides That Inhibit Siderophore Biosynthesis:  SAR of the Glycosyl Domain

  摘要：

  Tuberculosis is the leading cause of infectious disease mortality in the world by a bacterial pathogen. We previously demonstrated that a bisubstrate inhibitor of the adenylation enzyme MbtA, which is responsible for the second step of mycobactin biosynthesis, exhibited potent antitubercular activity. Here we systematically investigate the structure-activity relationships of the bisubstrate inhibitor glycosyl domain resulting in the identification of a carbocyclic analogue that possesses a K-I(app) value of 2.3 nM and MIC99 values of 1.56 mu M against M. tuberculosis H37Rv. The SAR data suggest the intriguing possibility that the bisubstrate inhibitors utilize a transporter for entry across the mycobacterial cell envelope. Additionally, we report improved conditions for the expression of MbtA and biochemical analysis, demonstrating that MbtA follows a random sequential enzyme mechanism for the adenylation half-reaction.

  DOI：

  10.1021/jm061068d

文献信息

• Reaction intermediate analogues as bisubstrate inhibitors of pantothenate synthetase
  作者：Zhixiang Xu、Wei Yin、Leonardo K. Martinelli、Joanna Evans、Jinglei Chen、Yang Yu、Daniel J. Wilson、Valerie Mizrahi、Chunhua Qiao、Courtney C. Aldrich

  DOI：10.1016/j.bmc.2014.01.017

  日期：2014.3

  The biosynthesis of pantothenate, the core of coenzyme A (CoA), has been considered an attractive target for the development of antimicrobial agents since this pathway is essential in prokaryotes, but absent in mammals. Pantothenate synthetase, encoded by the gene panC, catalyzes the final condensation of pantoic acid with beta-alanine to afford pantothenate via an intermediate pantoyl adenylate. We describe the synthesis and biochemical characterization of five PanC inhibitors that mimic the intermediate pantoyl adenylate. These inhibitors are competitive inhibitors with respect to pantoic acid and possess submicromolar to micromolar inhibition constants. The observed SAR is rationalized through molecular docking studies based on the reported co-crystal structure of 1a with PanC. Finally, whole cell activity is assessed against wild-type Mtb as well as a PanC knockdown strain where PanC is depleted to less than 5% of wild-type levels. (C) 2014 Elsevier Ltd. All rights reserved.