(R)-3-Phenyl-2-(2,2,2-trichloro-ethoxymethoxy)-propionic acid | 131760-48-0

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 苯丙酸
• 英文名称: (R)-3-Phenyl-2-(2,2,2-trichloro-ethoxymethoxy)-propionic acid
• CAS: 131760-48-0
• 化学式: C₁₂H₁₃Cl₃O₄
• 分子量: 327.592
• InChiKey: AQKVYHOAKKPJHP-SNVBAGLBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.04
• 重原子数：
  19.0
• 可旋转键数：
  7.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  55.76
• 氢给体数：
  1.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  (R)-3-Phenyl-2-(2,2,2-trichloro-ethoxymethoxy)-propionic acid 在 4-二甲氨基吡啶 、 碳酸二(2-吡啶)酯 、 溶剂黄146 、 锌 作用下， 以 甲醇 、 甲苯 为溶剂， 反应 53.0h， 生成 baccatin III 13-((R)-3-phenyllactate)
  参考文献：
  名称：

  Biologically active taxol analogs with deleted A-ring side chain substituents and variable C-2' configurations

  摘要：

  Taxol (1), a potent inhibitor of cell replication, enhances the assembly of tubulin into stable microtubules and promotes the formation of microtubule bundles in cells. In addition to its unique mechanism of action, taxol exhibits unusual promise as an antitumor agent, but its application in cancer chemotherapy is hampered by its limited availability. In order to better define the structure-activity profile of taxol for the design of more accessible drugs and to provide insight into the chemical features of the taxol-microtubule interaction, taxol analogues 3-8, with deleted A-ring side chain substituents and both R and S C-2' configurations, were synthesized from baccatin III (2) through esterification at the hindered 13-hydroxyl. Employing an improved hydroxyl protection strategy, lactate analogues 3 and 4 were prepared with reasonable efficiency owing to their simple side-chain structures, while N-benzoylisoserine analogues 7 and 8 were synthesized through esterification reactions whose rates were enhanced greatly by the participation of the amide functionality. Although less biologically active than taxol, analogues 5-7 were found to promote the polymerization of tubulin and to be cytotoxic; 5 and 6 were considerably more effective than 7, whereas 3, 4, and 8 were least active. Interestingly, tubulin polymerization was sensitive to the C-2' configuration only when the amide substituent was present in the side chain. This observation suggests that the 3'-amide substituent plays an important role in preorganizing the taxol side chain to bind to microtubules.

  DOI：

  10.1021/jm00107a042

文献信息

• Synthesis of taxol, analogs and intermediates with variable A-nng side chains
  申请人：BRYN MAWR COLLEGE

  公开号：EP1260507A1

  公开（公告）日：2002-11-27

  An efficient protocol for the synthesis of taxol, taxol analogs, and their intermediates is described. The process includes the attachment of the taxol A-ring side chain to baccatin III and for the synthesis of taxol and taxol analogs with variable A-ring side chain structures. A rapid and highly efficient esterification of O-protected isoserine and 3-phenylisoserine acids having N-benzyoloxycarbonyl groups to the C-13 hydroxyl of 7-O-protected baccatin III is followed by a deprotection-acylation sequence to make taxol, calphalomanninne and various analogs, including photoaffinity labeling candidates.

  本文介绍了一种有效的紫杉醇、紫杉醇类似物及其中间体的合成协议。该过程包括将紫杉醇A环侧链连接到紫杉醇前体baccatin III上，以及用具有可变A环侧链结构的化合物合成紫杉醇和紫杉醇类似物。通过快速高效的酯化反应，将O保护的异丝氨酸和3-苯基异丝氨酸酸与N-苄氧羰基基团连接到7-O保护的baccatin III的C-13羟基上，然后进行去保护-酰化序列，制备紫杉醇、卡法洛曼宁和各种类似物，包括光亲和标记候选物。