(4R,5R,6R)-5,6-dipivaloxy-1-(trimethylsilyl)oct-7-en-1-yn-4-ol | 930767-51-4

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羟基酸及其衍生物
• 英文名称: (4R,5R,6R)-5,6-dipivaloxy-1-(trimethylsilyl)oct-7-en-1-yn-4-ol
• CAS: 930767-51-4
• 化学式: C₂₁H₃₆O₅Si
• 分子量: 396.599
• InChiKey: IWFPFPTYLYQHJS-BRWVUGGUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.72
• 重原子数：
  27.0
• 可旋转键数：
  6.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  72.83
• 氢给体数：
  1.0
• 氢受体数：
  5.0

反应信息

• 作为反应物：
  描述：

  (4R,5R,6R)-5,6-dipivaloxy-1-(trimethylsilyl)oct-7-en-1-yn-4-ol 、 三乙基硅基三氟甲磺酸酯 在 sodium hydroxide 、 三乙胺 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 17.0h， 以93%的产率得到(3R,4R,5R)-3,4,5-tris(triethylsilyloxy)-oct-1-en-7-yne
  参考文献：
  名称：

  Synthesis of putative metabolites of 1α,25-dihydroxy-2β-(3-hydroxypropoxy)vitamin D3 (ED-71)

  摘要：

  1 alpha,25-Dihydroxy-2 beta-(3-hydroxypropoxy)vitamin D-3 (ED-71), an analog of active vitamin D-3, 1 alpha,25-dihydroxyvitamin D-3 [1,25(OH)(2)D-3] is under phase III clinical trials in Japan for the treatment of osteoporosis and bone fracture prevention. Since ED-71 has a substituent at the 2 beta-position of the A-ring, it is recognized that the metabolic pathway of ED-71 might be more complicated than 1,25(OH)(2)D-3 because of metabolism at the 2 beta-position substituent in addition to the inherent metabolism of the side chain. To clarify the metabolism of hydroxypropoxy substituent of the 2 beta-positon and a combination of metabolism between side chain and 2 beta-positon, four putative metabolites of ED-71 have been prepared as authentic samples. The metabolites at the 2 beta-positon, the methyl ester derivative considered as an ester standard of the oxidized metabolite and the tetraol derivative as the truncated metabolite were synthesized from alpha-epoxide, a key intermediate of ED-71 synthesis. The combination metabolites between side chain and 2 beta-positon, the 24(S)- and 24(R)-pentaols were synthesized using Trost's convergent method. (c) 2006 Elsevier Inc. All rights reserved.

  DOI：

  10.1016/j.steroids.2005.11.001
• 作为产物：
  描述：

  (2R,3S,4R)-3,4-dipivaloxy-5-hexene-1,2-diol 在 正丁基锂 、 偶氮二甲酸二异丙酯 、 三苯基膦 作用下， 以 四氢呋喃 、 1,4-二氧六环 、 正己烷 为溶剂， 反应 45.5h， 生成 (4R,5R,6R)-5,6-dipivaloxy-1-(trimethylsilyl)oct-7-en-1-yn-4-ol
  参考文献：
  名称：

  Synthesis of putative metabolites of 1α,25-dihydroxy-2β-(3-hydroxypropoxy)vitamin D3 (ED-71)

  摘要：

  1 alpha,25-Dihydroxy-2 beta-(3-hydroxypropoxy)vitamin D-3 (ED-71), an analog of active vitamin D-3, 1 alpha,25-dihydroxyvitamin D-3 [1,25(OH)(2)D-3] is under phase III clinical trials in Japan for the treatment of osteoporosis and bone fracture prevention. Since ED-71 has a substituent at the 2 beta-position of the A-ring, it is recognized that the metabolic pathway of ED-71 might be more complicated than 1,25(OH)(2)D-3 because of metabolism at the 2 beta-position substituent in addition to the inherent metabolism of the side chain. To clarify the metabolism of hydroxypropoxy substituent of the 2 beta-positon and a combination of metabolism between side chain and 2 beta-positon, four putative metabolites of ED-71 have been prepared as authentic samples. The metabolites at the 2 beta-positon, the methyl ester derivative considered as an ester standard of the oxidized metabolite and the tetraol derivative as the truncated metabolite were synthesized from alpha-epoxide, a key intermediate of ED-71 synthesis. The combination metabolites between side chain and 2 beta-positon, the 24(S)- and 24(R)-pentaols were synthesized using Trost's convergent method. (c) 2006 Elsevier Inc. All rights reserved.

  DOI：

  10.1016/j.steroids.2005.11.001