19-(tert-butyldimethylsiloxy)androsta-3,5-diene-7,17-dione | 157022-89-4

• 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: 19-(tert-butyldimethylsiloxy)androsta-3,5-diene-7,17-dione
• 英文别名: (8R,9S,10S,13S,14S)-10-[[tert-butyl(dimethyl)silyl]oxymethyl]-13-methyl-2,8,9,11,12,14,15,16-octahydro-1H-cyclopenta[a]phenanthrene-7,17-dione
• CAS: 157022-89-4
• 化学式: C₂₅H₃₈O₃Si
• 分子量: 414.66
• InChiKey: MQDFHELXYSFHJO-ILQNBUCISA-N

物化性质

• 沸点：
  506.8±50.0 °C(predicted)
• 密度：
  1.06±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.87
• 重原子数：
  29
• 可旋转键数：
  4
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.76
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  19-(tert-butyldimethylsiloxy)androsta-3,5-diene-7,17-dione 在 重铬酸吡啶 、 四丁基氟化铵 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 7.0h， 生成 androsta-3,5-diene-7,17,19-trione
  参考文献：
  名称：

  Synthesis of Androst-5-en-7-ones and Androsta-3,5-dien-7-ones and Their Related 7-Deoxy Analogs as Conformational and Catalytic Probes for the Active Site of Aromatase

  摘要：

  A series of androst-5-en-7-ones and androsta-3,5-dien-7-ones and their 7-deoxy derivatives, respectively, were synthesized and tested for their abilities to inhibit aromatase in human placental microsomes. All the steroids inhibited the enzyme in a competitive manner with K-i's ranging from 0.058 to 45 mu M. The inhibitory activities of 17-oxo compounds were much more potent than those of the corresponding 17 beta-alcohols in each series. Steroids having an oxygen function (hydroxy or carbonyl) at C-19 were less potent inhibitors than the corresponding parent compounds having a 19-methyl group. 3,5-Dien-7-one 24 and its 19-hydroxy and 19-oxo derivatives (12 and 13) as well as 19-oxo-5-en-7-one 3 caused a time-dependent inactivation of aromatase only in the presence of NADPH in which the k(inact) values of 19-als 3 and 13 (0.143 and 0.189 min(-1), respectively) were larger than those of the corresponding 19-methyl (23 and 24) and 19-hydroxy (1 and 12) steroids, respectively. 19-Nor-5-en-7-one 4 but not its 3,5-diene derivative 14 also inactivated the enzyme in a time-dependent manner. In contrast, 7-deoxy steroids 21 and 27, having a 19-methyl group, did not cause it. The inactivations were prevented by the substrate androstenedione, and no significant effects of L-cysteine on the inactivations were observed in each case. The results suggest that oxygenation at C-19 would be at least in part involved in the inactivations caused by the inhibitors 23 and 24. The conjugated enone structures should play a critical role in the inactivation sequences.

  DOI：

  10.1021/jm00040a012
• 作为产物：
  描述：

  Toluene-4-sulfonic acid (3S,8R,9S,10S,13S,14S)-10-(tert-butyl-dimethyl-silanyloxymethyl)-13-methyl-7,17-dioxo-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester 在 N-甲基吡咯烷酮 作用下， 反应 3.5h， 以20%的产率得到19-hydroxyandrosta-3,5-diene-7,17-dione
  参考文献：
  名称：

  Synthesis of Androst-5-en-7-ones and Androsta-3,5-dien-7-ones and Their Related 7-Deoxy Analogs as Conformational and Catalytic Probes for the Active Site of Aromatase

  摘要：

  A series of androst-5-en-7-ones and androsta-3,5-dien-7-ones and their 7-deoxy derivatives, respectively, were synthesized and tested for their abilities to inhibit aromatase in human placental microsomes. All the steroids inhibited the enzyme in a competitive manner with K-i's ranging from 0.058 to 45 mu M. The inhibitory activities of 17-oxo compounds were much more potent than those of the corresponding 17 beta-alcohols in each series. Steroids having an oxygen function (hydroxy or carbonyl) at C-19 were less potent inhibitors than the corresponding parent compounds having a 19-methyl group. 3,5-Dien-7-one 24 and its 19-hydroxy and 19-oxo derivatives (12 and 13) as well as 19-oxo-5-en-7-one 3 caused a time-dependent inactivation of aromatase only in the presence of NADPH in which the k(inact) values of 19-als 3 and 13 (0.143 and 0.189 min(-1), respectively) were larger than those of the corresponding 19-methyl (23 and 24) and 19-hydroxy (1 and 12) steroids, respectively. 19-Nor-5-en-7-one 4 but not its 3,5-diene derivative 14 also inactivated the enzyme in a time-dependent manner. In contrast, 7-deoxy steroids 21 and 27, having a 19-methyl group, did not cause it. The inactivations were prevented by the substrate androstenedione, and no significant effects of L-cysteine on the inactivations were observed in each case. The results suggest that oxygenation at C-19 would be at least in part involved in the inactivations caused by the inhibitors 23 and 24. The conjugated enone structures should play a critical role in the inactivation sequences.

  DOI：

  10.1021/jm00040a012