ethyl (E)-2-methyl-5-(trimethylsilyl)pent-2-en-4-ynoate | 54599-63-2

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: ethyl (E)-2-methyl-5-(trimethylsilyl)pent-2-en-4-ynoate
• 英文别名: ethyl (E)-2-methyl-5-trimethylsilylpent-2-en-4-ynoate
• CAS: 54599-63-2
• 化学式: C₁₁H₁₈O₂Si
• 分子量: 210.348
• InChiKey: PJRVCJMDOCMTKG-CSKARUKUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.38
• 重原子数：
  14
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.55
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  ethyl (E)-2-methyl-5-(trimethylsilyl)pent-2-en-4-ynoate 在 四丁基氟化铵 、 三乙胺 、 氯化铵 作用下， 以 四氢呋喃 、 二氯甲烷 、 水 为溶剂， 反应 2.33h， 以92%的产率得到ethyl (E)-2-methyl-2-penten-4-ynoate
  参考文献：
  名称：

  Total Synthesis of the Hsp90 Inhibitor Geldanamycin

  摘要：

  An enantioselective synthesis of the Hsp90 inhibitor geldanamycin was achieved in 20 linear steps and 2.0% overall yield from 2-methoxyhydroquinone. The synthesis is highlighted by a regio- and stereoselective hydroboration reaction; a Sc(OTf)(3)/Et(3)SiH-mediated pyran ring-opening reaction; an enantioselective crotylation to simultaneously install the C8-C9 (E)-trisubstituted olefin, the C10 and C11 stereocenters; a chelation-controlled asymmetric metallated acetylide addition; and an intramolecular copper(I)-mediated aryl amidation reaction to close the 19-membered macrolactam.

  DOI：

  10.1021/ol800749w
• 作为产物：
  描述：

  3-三甲基甲硅烷基丙炔醛 、 乙氧甲酰基亚乙基三苯基 以 二氯甲烷 为溶剂， 反应 6.0h， 以90%的产率得到ethyl (E)-2-methyl-5-(trimethylsilyl)pent-2-en-4-ynoate
  参考文献：
  名称：

  Total Synthesis of the Hsp90 Inhibitor Geldanamycin

  摘要：

  An enantioselective synthesis of the Hsp90 inhibitor geldanamycin was achieved in 20 linear steps and 2.0% overall yield from 2-methoxyhydroquinone. The synthesis is highlighted by a regio- and stereoselective hydroboration reaction; a Sc(OTf)(3)/Et(3)SiH-mediated pyran ring-opening reaction; an enantioselective crotylation to simultaneously install the C8-C9 (E)-trisubstituted olefin, the C10 and C11 stereocenters; a chelation-controlled asymmetric metallated acetylide addition; and an intramolecular copper(I)-mediated aryl amidation reaction to close the 19-membered macrolactam.

  DOI：

  10.1021/ol800749w

文献信息

• KOMISSAROVA E. V.; BELYAEV N. N.; STADNICHUK M. D., ZH. OBSHCH. XIMII, 1979, 49, HO 4, 938-943
  作者：KOMISSAROVA E. V.、 BELYAEV N. N.、 STADNICHUK M. D.

  DOI：——

  日期：——
• Total Synthesis of the Hsp90 Inhibitor Geldanamycin
  作者：Hua-Li Qin、James S. Panek

  DOI：10.1021/ol800749w

  日期：2008.6.1

  An enantioselective synthesis of the Hsp90 inhibitor geldanamycin was achieved in 20 linear steps and 2.0% overall yield from 2-methoxyhydroquinone. The synthesis is highlighted by a regio- and stereoselective hydroboration reaction; a Sc(OTf)(3)/Et(3)SiH-mediated pyran ring-opening reaction; an enantioselective crotylation to simultaneously install the C8-C9 (E)-trisubstituted olefin, the C10 and C11 stereocenters; a chelation-controlled asymmetric metallated acetylide addition; and an intramolecular copper(I)-mediated aryl amidation reaction to close the 19-membered macrolactam.