1-<(tert-butyldimethylsilyl)oxy>-3,8,12,16-tetramethyl-3(E),7(E),11(E),15-heptadecatetraene | 140176-41-6

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: 1-<(tert-butyldimethylsilyl)oxy>-3,8,12,16-tetramethyl-3(E),7(E),11(E),15-heptadecatetraene
• 英文别名: 3,8,12,16-tetramethyl-(3E,7E,11E),15-heptadecatetraenyl tert-butyldimethylsilyl ether；1-[(tert-butyldimethylsilyl)oxy]-3,8,12,16-tetramethyl-3(E),7(E),11(E),15-heptadecatetraene；tert-butyl-dimethyl-[(3E,7E,11E)-3,8,12,16-tetramethylheptadeca-3,7,11,15-tetraenoxy]silane
• CAS: 140176-41-6
• 化学式: C₂₇H₅₀OSi
• 分子量: 418.779
• InChiKey: AOICZXFPDQGBND-MBJIQPQZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  9.54
• 重原子数：
  29.0
• 可旋转键数：
  13.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.7
• 拓扑面积：
  9.23
• 氢给体数：
  0.0
• 氢受体数：
  1.0

反应信息

• 作为反应物：
  描述：

  1-<(tert-butyldimethylsilyl)oxy>-3,8,12,16-tetramethyl-3(E),7(E),11(E),15-heptadecatetraene 在 四丁基氟化铵 作用下， 以 四氢呋喃 为溶剂， 反应 4.0h， 以90%的产率得到3,8,12,16-tetramethyl-3(E),7(E),11(E),15-heptadecatetraen-1-ol
  参考文献：
  名称：

  Synthesis of inhibitors of 2,3-oxidosqualene-lanosterol cyclase: conjugate addition of organocuprates to N-(carbobenzyloxy)-3-carbomethoxy-5,6-dihydro-4-pyridone.

  摘要：

  Synthesis of ammonium ion analogues of the first cationic intermediate, 5, presumed to be formed during the cyclization of 2,3-oxidosqualene by 2,3-oxidosqualene-lanosterol cyclase are reported. The required 2,3-substituted-4-piperidinols are prepared by conjugate addition of higher order alkyl (2-thienyl)(cyano)cuprates to 1-(carbobenzyloxy)-3-carbomethoxy-5,6-dihydro-4-pyridone. The nitrogen protecting group (carbobenzyloxy) is key to the synthesis in that it allows the conjugate addition to proceed in high yield and is easily converted to the required N-methyl group in the final products. The key terpenoid side chain appended to C-2 of the piperidinols was constructed from homofarnesyl bromide and 1,5-difunctionalized homoisopentenyl derivatives prepared by zirconium-catalyzed carboalumination of protected 1-butyn-4-ol.

  DOI：

  10.1021/jo00036a008
• 作为产物：
  描述：

  ethyl (E)-5-((tert-butyldimethylsilyl)oxy)-3-methylpent-2-enoate 在 正丁基锂 、 N-chlorosuccinimide-dimethyl sulfide 、 lithium 、 二异丁基氢化铝 、 乙胺 作用下， 以 四氢呋喃 、 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 28.58h， 生成 1-<(tert-butyldimethylsilyl)oxy>-3,8,12,16-tetramethyl-3(E),7(E),11(E),15-heptadecatetraene
  参考文献：
  名称：

  Synthesis of inhibitors of 2,3-oxidosqualene-lanosterol cyclase: conjugate addition of organocuprates to N-(carbobenzyloxy)-3-carbomethoxy-5,6-dihydro-4-pyridone.

  摘要：

  Synthesis of ammonium ion analogues of the first cationic intermediate, 5, presumed to be formed during the cyclization of 2,3-oxidosqualene by 2,3-oxidosqualene-lanosterol cyclase are reported. The required 2,3-substituted-4-piperidinols are prepared by conjugate addition of higher order alkyl (2-thienyl)(cyano)cuprates to 1-(carbobenzyloxy)-3-carbomethoxy-5,6-dihydro-4-pyridone. The nitrogen protecting group (carbobenzyloxy) is key to the synthesis in that it allows the conjugate addition to proceed in high yield and is easily converted to the required N-methyl group in the final products. The key terpenoid side chain appended to C-2 of the piperidinols was constructed from homofarnesyl bromide and 1,5-difunctionalized homoisopentenyl derivatives prepared by zirconium-catalyzed carboalumination of protected 1-butyn-4-ol.

  DOI：

  10.1021/jo00036a008

文献信息

• Synthesis and Inhibition Studies of Sulfur-Substituted Squalene Oxide Analogues as Mechanism-Based Inhibitors of 2,3-Oxidosqualene−Lanosterol Cyclase
  作者：Dirk Stach、Yi Feng Zheng、Alice L. Perez、Allan C. Oehlschlager、Ikuro Abe、Glenn D. Prestwich、Peter G. Hartman

  DOI：10.1021/jm960483a

  日期：1997.1.1

  Enzyme inhibition kinetics using homogeneous mammalian oxidosqualene cyclases (OSC) were also examined for the previously reported S-19 analogue 4. The four analogues were potent inhibitors of mammalian OSCs (IC50 = 0.05-2.3 microM for pig and rat liver OSC) and fungal cell-free Candida albicans OSC (submicromolar IC50 values). In particular, the S-18 analogue 3 showed the most potent inhibition toward

  介绍了三种新的硫取代的氧化角鲨烯（OS）类似物（1-3）的合成和生物学评估。在这些类似物中，OS骨架中的C-11，C-15或C-18被硫取代。选择OS骨架中的硫位置来破坏一个或多个与环化有关的关键过程：（a）将B环折叠成船形，（b）导致马尔可夫环的反马氏环化，或（c）羊毛甾醇生物合成过程中D环的形成。还针对先前报道的S-19类似物4检查了使用均相哺乳动物氧化角鲨烯环化酶（OSC）的酶抑制动力学。这四种类似物是哺乳动物OSC的强效抑制剂（猪和大鼠肝OSC的IC50 = 0.05-2.3 microM）和真菌细胞。 -白色念珠菌OSC（亚微摩尔IC50值）。特别是，S-18类似物3对大鼠肝酶的抑制作用最强（IC50 = 50 nM），对真菌酶表现出有效的选择性抑制作用（IC50 = 0.22 nM，比S-19类似物4强10倍以上） ）。因此，3是迄今为止已知的最有效的OSC抑制剂。猪OSC的Ki值范围从0