4'',6''-O-cyclohexylidene-5-deoxy-5-epi-5-fluoro-1,3,2',6',3''-pentakis(N-tert-butoxycarbonyl)dibekacin | 189157-25-3

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: 4'',6''-O-cyclohexylidene-5-deoxy-5-epi-5-fluoro-1,3,2',6',3''-pentakis(N-tert-butoxycarbonyl)dibekacin
• CAS: 189157-25-3
• 化学式: C₄₉H₈₄FN₅O₁₇
• 分子量: 1034.23
• InChiKey: SVAZQRRMKUYYMV-WPUMBYHASA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.26
• 重原子数：
  72.0
• 可旋转键数：
  10.0
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  267.26
• 氢给体数：
  6.0
• 氢受体数：
  17.0

反应信息

• 作为反应物：
  描述：

  4'',6''-O-cyclohexylidene-5-deoxy-5-epi-5-fluoro-1,3,2',6',3''-pentakis(N-tert-butoxycarbonyl)dibekacin 在 重铬酸吡啶 、 3 A molecular sieve 作用下， 以 二氯甲烷 为溶剂， 反应 5.0h， 以80%的产率得到4'',6''-O-cyclohexylidene-5,2''-dideoxy-5-epi-5-fluoro-2''-oxo-1,3,2',6',3''-pentakis(N-tert-butoxycarbonyl)dibekacin
  参考文献：
  名称：

  Synthesis of 2″-oxidized derivatives of 5-deoxy-5-epi-5-fluoro-dibekacin and -arbekacin, and study on structure-chemical shift relationships of urethane(or amide)-type NH protons in synthetic intermediates

  摘要：

  Three 2''-modified dibekacin-analogs have been prepared as potential compounds active against resistant bacteria producing 2''-O-phosphotransferases; one is 5-deoxy-5,2''-diepi-5-fluorodibekacin (9) prepared from a suitably protected 2''-O-triflyl derivative through the 2'',3''-cyclic carbamate, and the others are 2''-oxo derivatives (12 and 22, both as the hydrate) of 5-deoxy-5-epi-5-fluoro-dibekacin and -arbekacin prepared through oxidation at C-2'' of suitably protected derivatives. Relationships between the t-butoxycarbonyl(= Boc)-NH-shifts of per-N-Boc synthetic intermediates and their structures were studied. It was found that the shifts, measured in pyridine-d(5) at 80 degrees C, which spread over a close range (delta 6-7 ppm), are sensitively influenced by nearby and surrounding groups around the BocNH group in respect of electron-withdrawing character, hydrogen bonding (BocNH ... acceptor), and also solvent effects (BocNH ... NC5H5). (C) 1997 Elsevier Science Ltd.

  DOI：

  10.1016/s0008-6215(96)00318-7
• 作为产物：
  描述：

  2''-O-acetyl-4'',6''-O-cyclohexylidene-5-deoxy-5-epi-5-fluoro-1,3,2',6',3''-pentakis(N-tert-butoxycarbonyl)dibekacin 在 sodium methylate 作用下， 以 甲醇 为溶剂， 反应 0.5h， 以98%的产率得到4'',6''-O-cyclohexylidene-5-deoxy-5-epi-5-fluoro-1,3,2',6',3''-pentakis(N-tert-butoxycarbonyl)dibekacin
  参考文献：
  名称：

  Synthesis of 2″-oxidized derivatives of 5-deoxy-5-epi-5-fluoro-dibekacin and -arbekacin, and study on structure-chemical shift relationships of urethane(or amide)-type NH protons in synthetic intermediates

  摘要：

  Three 2''-modified dibekacin-analogs have been prepared as potential compounds active against resistant bacteria producing 2''-O-phosphotransferases; one is 5-deoxy-5,2''-diepi-5-fluorodibekacin (9) prepared from a suitably protected 2''-O-triflyl derivative through the 2'',3''-cyclic carbamate, and the others are 2''-oxo derivatives (12 and 22, both as the hydrate) of 5-deoxy-5-epi-5-fluoro-dibekacin and -arbekacin prepared through oxidation at C-2'' of suitably protected derivatives. Relationships between the t-butoxycarbonyl(= Boc)-NH-shifts of per-N-Boc synthetic intermediates and their structures were studied. It was found that the shifts, measured in pyridine-d(5) at 80 degrees C, which spread over a close range (delta 6-7 ppm), are sensitively influenced by nearby and surrounding groups around the BocNH group in respect of electron-withdrawing character, hydrogen bonding (BocNH ... acceptor), and also solvent effects (BocNH ... NC5H5). (C) 1997 Elsevier Science Ltd.

  DOI：

  10.1016/s0008-6215(96)00318-7