7α-Methyl-16α-bromoestrone | 146016-30-0

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 类固醇和类固醇衍生物
• 英文名称: 7α-Methyl-16α-bromoestrone
• 英文别名: 16α-bromo-3-hydroxy-7α-methylestra-1,3,5(10)-trien-17-one；(7R,8R,9S,13S,14S,16R)-16-bromo-3-hydroxy-7,13-dimethyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-one
• CAS: 146016-30-0
• 化学式: C₁₉H₂₃BrO₂
• 分子量: 363.294
• InChiKey: GJWBDYRIULZNFD-GXNJCCJESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.7
• 重原子数：
  22
• 可旋转键数：
  0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.63
• 拓扑面积：
  37.3
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  7α-Methyl-16α-bromoestrone 在 对甲苯磺酸 作用下， 反应 0.25h， 生成 7α-Methyl-14-dehydroestrone 3-acetate
  参考文献：
  名称：

  雌激素的构效关系。14-脱氢和轴向甲基在 C-7、C-9 和 C-11 上的影响

  摘要：

  在大鼠中评估了 30 种化合物的促子宫作用、抑制促性腺激素释放和 (3H) 雌二醇-17 β 从子宫细胞溶质制剂中的竞争性置换。7 α-甲基雌二醇-17 β 作为促子宫剂的活性是雌二醇-17 β 的 150%。Estradiol-17 beta 是最活跃的促性腺激素释放抑制剂。11 beta-Methylestradiol-17 beta 在从“雌激素受体”置换 (3H) estradiol-17 beta 方面具有 estradiol-17 beta 活性的 124%。在三种测定中的任何一种中，9 α-甲基都显着降低了雌激素的效力。14-脱氢改性仅在雌二醇-17 β 3-甲基醚系列中是有利的。促子宫活性和抑制促性腺激素释放不平行。抑制促性腺激素释放的最佳化合物，与促子宫活性相比，是雌酮。“雌激素受体”测定数据与亲子宫测定数据相当好相关，但仅针对具有游离3-羟基的化合物；即便如此，也注意到了一些例外情况。

  DOI：

  10.1016/0039-128x(83)90054-5
• 作为产物：
  描述：

  7α-Methyl-16α-bromoestrone 3-acetate 在 硫酸 作用下， 以 乙醇 为溶剂， 以74.5%的产率得到7α-Methyl-16α-bromoestrone
  参考文献：
  名称：

  7.alpha.-Methyl- and 11.beta.-ethoxy-substitution of iodine-125-labeled [125I]16.alpha.-iodoestradiol: effect on estrogen receptor-mediated target tissue uptake

  摘要：

  The 7alpha-methyl and 11beta-ethoxy derivatives of 16alpha-[I-125]iodoestradiol were prepared via halogen exchange with I-125 of the corresponding 16beta-bromoestradiol precursors. The 16alpha-bromo derivatives were obtained via halogenation of the analogous 17-enol acetate, epimerization to the 16beta-isomer, and hydride reduction. Stereochemical assignments were based on high resolution H-1 NMR. To evaluate the effect of the nature and stereochemistry of the 16-halo substituent on the relative binding affinity for the estrogen receptor, the analogous 16-chloro derivatives were also prepared. The highest binding affinities were observed with the 7alpha-methyl-16alpha-haloestradiols, particularly the bromo and chloro derivatives while the 16alpha-iodo derivatives gave somewhat lower values. Both the 11beta-ethoxy and 7alpha-methyl-16alpha-[I-125]iodoestradiols localize in the uteri of immature female rats via a receptor-mediated process. Rapid blood clearance of the I-125-labeled 7alpha-methyl derivative results in lower I-125 uptake by the uterus as well as nontarget organs as compared to the 11beta-substituted estradiol analogs. However, uterus to blood and nontarget ratios are more favorable for the 7alpha-methyl-16alpha-[I-125]iodoestradiol as compared to the analogous 11beta-ethoxy derivatives suggesting that this compound substituted with I-125 may be useful for the in vivo imaging of estrogen receptor-rich breast tumors by single photon emission computerized tomography.

  DOI：

  10.1021/jm00054a011

文献信息

• Structure-activity relationships of estrogens. Effects of 14-dehydrogenation and axial methyl groups at C-7, C-9 and C-11
  作者：R Gabbard

  DOI：10.1016/0039-128x(83)90054-5

  日期：1983.6

  the estradiol-17 beta 3-methyl ether series. Uterotropic activities and inhibition of gonadotropin release did not parallel. The best compound for inhibiting gonadotropin release, as compared to uterotropic activity, was estrone. The "estrogen receptor" assay data correlated fairly well with uterotropic assay data, but only for compounds having free 3-hydroxyl groups; even so, some exceptions were noted

  在大鼠中评估了 30 种化合物的促子宫作用、抑制促性腺激素释放和 (3H) 雌二醇-17 β 从子宫细胞溶质制剂中的竞争性置换。7 α-甲基雌二醇-17 β 作为促子宫剂的活性是雌二醇-17 β 的 150%。Estradiol-17 beta 是最活跃的促性腺激素释放抑制剂。11 beta-Methylestradiol-17 beta 在从“雌激素受体”置换 (3H) estradiol-17 beta 方面具有 estradiol-17 beta 活性的 124%。在三种测定中的任何一种中，9 α-甲基都显着降低了雌激素的效力。14-脱氢改性仅在雌二醇-17 β 3-甲基醚系列中是有利的。促子宫活性和抑制促性腺激素释放不平行。抑制促性腺激素释放的最佳化合物，与促子宫活性相比，是雌酮。“雌激素受体”测定数据与亲子宫测定数据相当好相关，但仅针对具有游离3-羟基的化合物；即便如此，也注意到了一些例外情况。
• 7.alpha.-Methyl- and 11.beta.-ethoxy-substitution of iodine-125-labeled [125I]16.alpha.-iodoestradiol: effect on estrogen receptor-mediated target tissue uptake
  作者：Hasrat Ali、Jacques Rousseau、Johan E. Van Lier

  DOI：10.1021/jm00054a011

  日期：1993.1

  The 7alpha-methyl and 11beta-ethoxy derivatives of 16alpha-[I-125]iodoestradiol were prepared via halogen exchange with I-125 of the corresponding 16beta-bromoestradiol precursors. The 16alpha-bromo derivatives were obtained via halogenation of the analogous 17-enol acetate, epimerization to the 16beta-isomer, and hydride reduction. Stereochemical assignments were based on high resolution H-1 NMR. To evaluate the effect of the nature and stereochemistry of the 16-halo substituent on the relative binding affinity for the estrogen receptor, the analogous 16-chloro derivatives were also prepared. The highest binding affinities were observed with the 7alpha-methyl-16alpha-haloestradiols, particularly the bromo and chloro derivatives while the 16alpha-iodo derivatives gave somewhat lower values. Both the 11beta-ethoxy and 7alpha-methyl-16alpha-[I-125]iodoestradiols localize in the uteri of immature female rats via a receptor-mediated process. Rapid blood clearance of the I-125-labeled 7alpha-methyl derivative results in lower I-125 uptake by the uterus as well as nontarget organs as compared to the 11beta-substituted estradiol analogs. However, uterus to blood and nontarget ratios are more favorable for the 7alpha-methyl-16alpha-[I-125]iodoestradiol as compared to the analogous 11beta-ethoxy derivatives suggesting that this compound substituted with I-125 may be useful for the in vivo imaging of estrogen receptor-rich breast tumors by single photon emission computerized tomography.