7-bromo-5-{[tert-butyl(dimethyl)silyl]oxy}-2-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1,3-benzoxazole | 544705-04-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 7-bromo-5-{[tert-butyl(dimethyl)silyl]oxy}-2-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1,3-benzoxazole
• 英文别名: [4-[7-bromo-5-[tert-butyl(dimethyl)silyl]oxy-1,3-benzoxazol-2-yl]phenoxy]-tert-butyl-dimethylsilane
• CAS: 544705-04-6
• 化学式: C₂₅H₃₆BrNO₃Si₂
• 分子量: 534.641
• InChiKey: KLRRJLHTBYIFIS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  9.03
• 重原子数：
  32
• 可旋转键数：
  7
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.48
• 拓扑面积：
  44.5
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  7-bromo-5-{[tert-butyl(dimethyl)silyl]oxy}-2-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1,3-benzoxazole 在 正丁基锂 、 四丁基氟化铵 作用下， 以 四氢呋喃 为溶剂， 反应 3.5h， 生成 ethyl 5-hydroxy-2-(4-hydroxyphenyl)-1,3-benzoxazole-7-carboxylate
  参考文献：
  名称：

  Design and Synthesis of Aryl Diphenolic Azoles as Potent and Selective Estrogen Receptor-β Ligands

  摘要：

  New diphenolic azoles as highly selective estrogen receptor-beta agonists are reported. The more potent and selective analogues of these series have comparable binding affinities for ERbeta as the natural ligand 17beta-estradiol but are > 100-fold selective over ERalpha. Our design strategy not only followed a traditional SAR approach but also was supported by X-ray structures of ERbeta cocrystallized with various ligands as well as molecular modeling studies. These strategies enabled us to take advantage of a single conservative residue substitution in the ligand-binding pocket, ERalpha Met(421) --> ERbeta Ile(373), to optimize ERbeta selectivity. The 7-position-substituted benzoxazoles (Table 5) were the most selective ligands of both azole series, with ERB-041 (117) being >200-fold selective for ERbeta. The majority of ERbeta selective agonists tested that were at least similar to50-fold selective displayed a consistent in vivo profile: they were inactive in several models of classic estrogen action (uterotrophic, osteopenia, and vasomotor instability models) and yet were active in the HLA-B27 transgenic rat model of inflammatory bowel disease. These data suggest that ERbeta-selective agonists are devoid of classic estrogenic effects and may offer a novel therapy to treat certain inflammatory conditions.

  DOI：

  10.1021/jm049719y
• 作为产物：
  描述：

  叔丁基二甲基氯硅烷 、 7-溴-2-(4-羟基苯基)-1,3-苯并恶唑-5-醇 在 咪唑 、 4-二甲氨基吡啶 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 3.0h， 以96%的产率得到7-bromo-5-{[tert-butyl(dimethyl)silyl]oxy}-2-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1,3-benzoxazole
  参考文献：
  名称：

  Design and Synthesis of Aryl Diphenolic Azoles as Potent and Selective Estrogen Receptor-β Ligands

  摘要：

  New diphenolic azoles as highly selective estrogen receptor-beta agonists are reported. The more potent and selective analogues of these series have comparable binding affinities for ERbeta as the natural ligand 17beta-estradiol but are > 100-fold selective over ERalpha. Our design strategy not only followed a traditional SAR approach but also was supported by X-ray structures of ERbeta cocrystallized with various ligands as well as molecular modeling studies. These strategies enabled us to take advantage of a single conservative residue substitution in the ligand-binding pocket, ERalpha Met(421) --> ERbeta Ile(373), to optimize ERbeta selectivity. The 7-position-substituted benzoxazoles (Table 5) were the most selective ligands of both azole series, with ERB-041 (117) being >200-fold selective for ERbeta. The majority of ERbeta selective agonists tested that were at least similar to50-fold selective displayed a consistent in vivo profile: they were inactive in several models of classic estrogen action (uterotrophic, osteopenia, and vasomotor instability models) and yet were active in the HLA-B27 transgenic rat model of inflammatory bowel disease. These data suggest that ERbeta-selective agonists are devoid of classic estrogenic effects and may offer a novel therapy to treat certain inflammatory conditions.

  DOI：

  10.1021/jm049719y
• 作为试剂：
  描述：

  叔丁基二甲基氯硅烷 、 7-溴-5-甲氧基-2-(4-甲氧基苯基)-1,3-苯并恶唑 在 7-bromo-5-{[tert-butyl(dimethyl)silyl]oxy}-2-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1,3-benzoxazole 作用下， 以The desired product was obtained as a white solid, m.p. 90–91° C.的产率得到7-bromo-5-{[tert-butyl(dimethyl)silyl]oxy}-2-(4-{[tert-butyl(dimethyl)silyl]oxy}phenyl)-1,3-benzoxazole
  参考文献：
  名称：

  PRODRUG SUBSTITUTED BENZOXAZOLES AS ESTROGENIC AGENTS

  摘要：

  本发明提供了式I的雌激素受体调节剂，其结构为 其中Q、Q2、R1、R2、R2a、R3、R3a和X如规范中所定义，或其药学上可接受的盐。

  公开号：

  US20080255057A1

文献信息

• Prodrug substituted benzoxazoles as estrogenic agents
  申请人：Elmarakby Sayed

  公开号：US20060046968A1

  公开（公告）日：2006-03-02

  This invention provides estrogen receptor modulators of formula I, having the structure wherein Q, Q 2 , R 1 , R 2 , R 2a , R 3 , R 3a , and X as defined in the specification, or a pharmaceutically acceptable salt thereof.

  这项发明提供了具有以下结构的公式I的雌激素受体调节剂，其中Q、Q2、R1、R2、R2a、R3、R3a和X如规范中定义，或其药用可接受盐。
• Substituted benzoxazoles as estrogenic agents
  申请人：Wyeth

  公开号：US20030199562A1

  公开（公告）日：2003-10-23

  This invention provides estrogen receptor modulators of formula I, having the structure 1 wherein R 1 , R 2 , R 2a , R 3 , R 3a , and R 4 , and X as defined in the specification, or a pharmaceutically acceptable salt thereof.

  这项发明提供了具有结构1的式I的雌激素受体调节剂，其中R1、R2、R2a、R3、R3a和R4以及规范中定义的X，或其药用可接受盐。
• Design and Synthesis of Aryl Diphenolic Azoles as Potent and Selective Estrogen Receptor-β Ligands
  作者：Michael S. Malamas、Eric S. Manas、Robert E. McDevitt、Iwan Gunawan、Zhang B. Xu、Michael D. Collini、Chris P. Miller、Tam Dinh、Ruth A. Henderson、James C. Keith、Heather A. Harris

  DOI：10.1021/jm049719y

  日期：2004.10.1

  New diphenolic azoles as highly selective estrogen receptor-beta agonists are reported. The more potent and selective analogues of these series have comparable binding affinities for ERbeta as the natural ligand 17beta-estradiol but are > 100-fold selective over ERalpha. Our design strategy not only followed a traditional SAR approach but also was supported by X-ray structures of ERbeta cocrystallized with various ligands as well as molecular modeling studies. These strategies enabled us to take advantage of a single conservative residue substitution in the ligand-binding pocket, ERalpha Met(421) --> ERbeta Ile(373), to optimize ERbeta selectivity. The 7-position-substituted benzoxazoles (Table 5) were the most selective ligands of both azole series, with ERB-041 (117) being >200-fold selective for ERbeta. The majority of ERbeta selective agonists tested that were at least similar to50-fold selective displayed a consistent in vivo profile: they were inactive in several models of classic estrogen action (uterotrophic, osteopenia, and vasomotor instability models) and yet were active in the HLA-B27 transgenic rat model of inflammatory bowel disease. These data suggest that ERbeta-selective agonists are devoid of classic estrogenic effects and may offer a novel therapy to treat certain inflammatory conditions.
• PRODRUG SUBSTITUTED BENZOXAZOLES AS ESTROGENIC AGENTS
  申请人：Elmarakby Sayed

  公开号：US20080255057A1

  公开（公告）日：2008-10-16

  This invention provides estrogen receptor modulators of formula I, having the structure wherein Q, Q 2 , R 1 , R 2 , R 2a , R 3 , R 3a , and X as defined in the specification, or a pharmaceutically acceptable salt thereof.

  本发明提供了式I的雌激素受体调节剂，其结构为 其中Q、Q2、R1、R2、R2a、R3、R3a和X如规范中所定义，或其药学上可接受的盐。