22-fluorovitamin D₃ | 110536-31-7

• 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: 22-fluorovitamin D₃
• 英文别名: (5Z,7E)-(3S)-22-fluoro-9,10-seco-5,7,10(19)-cholestatrien-3-ol；(1S,3Z)-3-[(2E)-2-[(1R,3aS,7aR)-1-[(2S)-3-fluoro-6-methylheptan-2-yl]-7a-methyl-2,3,3a,5,6,7-hexahydro-1H-inden-4-ylidene]ethylidene]-4-methylidenecyclohexan-1-ol
• CAS: 110536-31-7
• 化学式: C₂₇H₄₃FO
• 分子量: 402.636
• InChiKey: BULPIFATHWIAFY-BEDQNQFSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.5
• 重原子数：
  29
• 可旋转键数：
  6
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.78
• 拓扑面积：
  20.2
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  (22S)-cholest-5-ene-3β,22-diol 3β-acetate 在 lithium aluminium tetrahydride 、 二乙胺基三氟化硫 作用下， 以 四氢呋喃 、 乙醚 、 乙醇 、 二氯甲烷 为溶剂， 反应 5.61h， 生成 22-fluorovitamin D₃
  参考文献：
  名称：

  The synthesis and biological activity of 22-fluorovitamin D3: A new vitamin D analog

  摘要：

  We synthesized 22-fluorovitamin D3 from (22S) cholest-5-ene-3 beta, 22-diol-3 beta-acetate 2. Compound 2 was treated with diethylaminosulfur trifluoride to give 22-fluorocholest-5-en-3 beta-acetate 3 and (E) 22-dehydrocholest-5-en-3 beta-acetate. Compound 3 was treated with N-bromosuccinimide to give a mixture of the respective 5,7- and 4,6-dienes. The 5,7-diene of 3 was separated from the 4,6-diene using the dienophile 4-phenyl-1,2,4-triazoline-3, 5-dione. 22-Fluoro-5 alpha,8 alpha-(3,5-dioxo-4-phenyl-1, 2,4-triazolino)-cholest-6-en-3 beta-acetate 4 was purified by flash chromatography and treated with lithium aluminum hydride to generate 22-fluorocholesta-5,7-dien-3 beta-ol 5. Photolysis of the diene 5, followed by thermal equilibration, resulted in the synthesis of 22-fluorovitamin D3 7. The vitamin 7 increased active intestinal calcium transport only at a dose of 50,000 pmol/rat, whereas vitamin D3 increased intestinal calcium transport at a dose of between 50 and 500 pmol/rat. 22-Fluorovitamin D3 7 did not mobilize bone and soft tissue calcium at a dose as high as 50,000 pmol/rat, whereas vitamin D3 was successful in doing so at a dose of 500 pmol/rat. When tested in the duodenal organ culture system, 22-fluorovitamin D3 7 had approximately 1/25th the potency of vitamin D3. It did not antagonize the activity of 1,25-dihydroxyvitamin D3. 22-Fluorovitamin D3 7 bound to the rat plasma vitamin D binding protein less avidly than vitamin D3. 22-Fluorovitamin D3 was bound very poorly to the chick intestinal cytosol receptor for 1,25-dihydroxyvitamin D3. We conclude that the introduction of fluorine at the C-22 position results in a vitamin D sterol with decreased biologic activity when compared to vitamin D3. The presence of a fluorine group at C-22 position inhibits the binding of the vitamin to rat vitamin D binding protein when compared to the binding of its hydrogen analog, vitamin D3.

  DOI：

  10.1016/0039-128x(86)90044-9

文献信息

• The synthesis and biological activity of 22-fluorovitamin D3: A new vitamin D analog
  作者：Harpal S. Gill、James M. Londowski、Robert A. Corradino、Rajiv Kumar

  DOI：10.1016/0039-128x(86)90044-9

  日期：1986.7

  We synthesized 22-fluorovitamin D3 from (22S) cholest-5-ene-3 beta, 22-diol-3 beta-acetate 2. Compound 2 was treated with diethylaminosulfur trifluoride to give 22-fluorocholest-5-en-3 beta-acetate 3 and (E) 22-dehydrocholest-5-en-3 beta-acetate. Compound 3 was treated with N-bromosuccinimide to give a mixture of the respective 5,7- and 4,6-dienes. The 5,7-diene of 3 was separated from the 4,6-diene using the dienophile 4-phenyl-1,2,4-triazoline-3, 5-dione. 22-Fluoro-5 alpha,8 alpha-(3,5-dioxo-4-phenyl-1, 2,4-triazolino)-cholest-6-en-3 beta-acetate 4 was purified by flash chromatography and treated with lithium aluminum hydride to generate 22-fluorocholesta-5,7-dien-3 beta-ol 5. Photolysis of the diene 5, followed by thermal equilibration, resulted in the synthesis of 22-fluorovitamin D3 7. The vitamin 7 increased active intestinal calcium transport only at a dose of 50,000 pmol/rat, whereas vitamin D3 increased intestinal calcium transport at a dose of between 50 and 500 pmol/rat. 22-Fluorovitamin D3 7 did not mobilize bone and soft tissue calcium at a dose as high as 50,000 pmol/rat, whereas vitamin D3 was successful in doing so at a dose of 500 pmol/rat. When tested in the duodenal organ culture system, 22-fluorovitamin D3 7 had approximately 1/25th the potency of vitamin D3. It did not antagonize the activity of 1,25-dihydroxyvitamin D3. 22-Fluorovitamin D3 7 bound to the rat plasma vitamin D binding protein less avidly than vitamin D3. 22-Fluorovitamin D3 was bound very poorly to the chick intestinal cytosol receptor for 1,25-dihydroxyvitamin D3. We conclude that the introduction of fluorine at the C-22 position results in a vitamin D sterol with decreased biologic activity when compared to vitamin D3. The presence of a fluorine group at C-22 position inhibits the binding of the vitamin to rat vitamin D binding protein when compared to the binding of its hydrogen analog, vitamin D3.