β-saxitoxinol | 75352-30-6

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮
• 英文名称: β-saxitoxinol
• 英文别名: beta-Dihydrosaxitoxin；[(3aS,4R,10S,10aS)-2,6-diamino-10-hydroxy-1,3a,4,8,9,10-hexahydropyrrolo[1,2-c]purin-4-yl]methyl carbamate
• CAS: 75352-30-6
• 化学式: C₁₀H₁₇N₇O₃
• 分子量: 283.29
• InChiKey: NILHUXIFTLLDPJ-AVGUDYQDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -3.9
• 重原子数：
  20
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.7
• 拓扑面积：
  165
• 氢给体数：
  5
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  三氟乙酸 、 β-saxitoxinol 以 水 为溶剂， 以12 mg的产率得到β-saxitoxinol
  参考文献：
  名称：

  Total Synthesis of (−)- and (+)-Decarbamoyloxysaxitoxin and (+)-Saxitoxin

  摘要：

  AbstractPlaying the sax: The enantioselective total syntheses of (−)‐ and (+)‐decarbamoyloxysaxitoxin (doSTX) and (+)‐saxitoxin (STX) are reported. A new methodology was developed for the synthesis of STXs, featuring discriminative reduction of the nitro group and NO bond in nitroisoxazolidine.magnified imageEnantioselective total syntheses of (−)‐ and (+)‐decarbamoyloxysaxitoxin (doSTX) and (+)‐saxitoxin (STX) were achieved. The characteristic spiro‐fused cyclic guanidine structure of STX was constructed by oxidation at the C4 position with IBX via an α‐iminium carbonyl intermediate and acid‐promoted cyclization of guanidine at the C5 position. A second‐generation methodology was developed for the synthesis of STX, featuring discriminative reduction of the nitro group and NO bond in nitroisoxazolidine. This approach provides efficient access to the key diamine intermediate for STXs.

  DOI：

  10.1002/asia.200800382
• 作为产物：
  描述：

  Carbamic acid (3R,4S,4aR,5S)-4-({amino-[(E)-4-methoxy-benzenesulfonylimino]-methyl}-amino)-4a,5-dihydroxy-1-[(E)-4-methoxy-benzenesulfonylimino]-octahydro-pyrrolo[1,2-c]pyrimidin-3-ylmethyl ester 在 三(三氟乙酸)硼烷 、 三氟乙酸 作用下， 反应 19.0h， 生成 β-saxitoxinol
  参考文献：
  名称：

  (+)-石房蛤毒素：第一代和第二代立体选择性合成

  摘要：

  描述了双胍毒素 (+)-石房蛤毒素 (STX) 的立体选择性合成，该试剂臭名昭著地与赤潮和麻痹性贝类中毒有关。我们对这种独特的天然产物的研究通过一种不寻常的九元环胍中间体 39 推进到定义 STX 的三环骨架。该策略的有效性是显着的，因为只需四个步骤即可将 39 转化为目标分子，包括由 OsCl3 催化的四电子烯烃氧化。关键单环胍的构建是通过两个通道实现的，第一个通道利用 Rh 催化的 CH 胺化，并突出了一类新型杂环 N,O-缩醛作为用于制作功能化胺的亚胺离子等价物。

  DOI：

  10.1021/ja071501o

文献信息

• METHODS AND COMPOSITIONS FOR STUDYING, IMAGING, AND TREATING PAIN
  申请人：THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY

  公开号：US20160115173A1

  公开（公告）日：2016-04-28

  Saxitoxin analogue compounds, compositions, pharmaceutical compositions, methods of synthesis of saxitoxin analogues, methods of imaging, methods of treatment, including methods of treating pain, are provided. Saxitoxin (STX), gonyautoxin (GTX), and zetekitoxin, and variant STX compounds bind to sodium channels and are effective to reduce or block flow of sodium ions through such channels. Such channel block affects nerve and muscle action, and may be effective to reduce or block pain sensations, relax muscles, reduce muscle spasm, and reduce wrinkles. STX analogue binding to sodium channels may also be useful to locate, image, or mark sodium channels, and so be useful in studying sodium channels and sodium channel disorders, and in the diagnosis and treatment of patients suffering from sodium channel disorders. In embodiments, the variant STX compounds include conjugates having increased serum half-life as compared to STX when administered to a subject. In embodiments, the present disclosure provides a method for alleviating pain in a subject in need of treatment, the method comprising administering to the subject an effective amount of a saxitoxin analogue compound, or a pharmaceutically acceptable salt, isomer, tautomer or prodrug thereof, whereby pain in said subject is alleviated.