5β-cholest-7-en-3-one | 29374-80-9

• 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: 5β-cholest-7-en-3-one
• 英文别名: (5R,9R,10S,13R,14R,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-1,2,4,5,6,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-3-one
• CAS: 29374-80-9
• 化学式: C₂₇H₄₄O
• 分子量: 384.646
• InChiKey: FLRPNSKUGCVRRB-GFWJTQLASA-N

物化性质

• 沸点：
  477.2±44.0 °C(Predicted)
• 密度：
  0.98±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  7.9
• 重原子数：
  28
• 可旋转键数：
  5
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.89
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  5β-cholest-7-en-3-one 在 碳酸氢锂 、 phenyltrimethylammonium tribromide 、 lithium chloride 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 为溶剂， 反应 1.0h， 生成 胆甾-4,7-二烯-3-酮
  参考文献：
  名称：

  Synthesis of a tritiated 3-dehydroecdysteroid putative precursor of ecdysteroid biosynthesis in Locusta migratoria

  摘要：

  We have synthesized a tritiated form of 14-alpha-hydroxy-5-beta-cholest-7-ene-3,6-dione (5-beta-diketol) of high specific activity (1.74 TBq/mmol) from 7-dehydrocholesterol in seven steps with stereoselective introduction of the A/B cis ring junction as the key reaction. We have examined the ability of endocrine glands (prothoracic glands) of Locusta migratoria to use this molecule as a precursor of 3-dehydroecdysone and of ecdysone biosynthesis. A very efficient conversion of 5-beta-diketol to ecdysone and to 3-dehydroecdysone was monitored, which opens up new possibilities for the understanding of the role of 3-dehydro-compounds in ecdysteroid biosynthesis.

  DOI：

  10.1016/s0040-4020(01)96161-7
• 作为产物：
  描述：

  2β-bromo-5β-cholest-7-en-3-one 在 Lindlar's catalyst 喹啉 、 碳酸氢锂 、 氢气 、 lithium chloride 作用下， 以 乙醇 、 N,N-二甲基甲酰胺 为溶剂， 反应 1.0h， 生成 5β-cholest-7-en-3-one
  参考文献：
  名称：

  Synthesis of a tritiated 3-dehydroecdysteroid putative precursor of ecdysteroid biosynthesis in Locusta migratoria

  摘要：

  We have synthesized a tritiated form of 14-alpha-hydroxy-5-beta-cholest-7-ene-3,6-dione (5-beta-diketol) of high specific activity (1.74 TBq/mmol) from 7-dehydrocholesterol in seven steps with stereoselective introduction of the A/B cis ring junction as the key reaction. We have examined the ability of endocrine glands (prothoracic glands) of Locusta migratoria to use this molecule as a precursor of 3-dehydroecdysone and of ecdysone biosynthesis. A very efficient conversion of 5-beta-diketol to ecdysone and to 3-dehydroecdysone was monitored, which opens up new possibilities for the understanding of the role of 3-dehydro-compounds in ecdysteroid biosynthesis.

  DOI：

  10.1016/s0040-4020(01)96161-7

文献信息

• Moulting Hormones. LIII. the Synthesis and Biological Activity of Some Ecdysone Analogues
  作者：M Galbraith、DS Horn、B Kelly、J Kinnear、M Martin、E Middleton、CF Virgona

  DOI：10.1071/ch9812607

  日期：——

  A number of ecdysone analogues were prepared to study the effect of structural changes on biological activity. It was found that analogues with the 5α-configuration or a 3,5-cyclo structure were inactive, that a 3β-hydroxy group enhances activity but is not essential for activity, and that 3β-substituents decrease activity as follows: OMe (60%), OAc (25%) and OEt (10%). The keto diol (3), keto alcohol (9) and amide (36) were found to be highly toxic to mosquito larvae.

  制备了多种蜕皮激素 类似物，以研究结构变化对生物活性的影响。 生物活性的影响。研究发现，具有 5α-configuration 或 3,5-cyclo 结构的类似物没有活性。 3,5-环结构的类似物没有活性，3β-羟基可增强活性，但对活性并不重要。 3β-羟基可增强活性，但并非活性的必要条件，而 3β 取代基则会降低活性。 降低活性的情况如下：OMe（60%）、OAc（25%）和 OEt（10%）。酮二醇 (3) 、酮醇 (9) 和酰胺 (36) 对蚊子幼虫有剧毒。 幼虫有剧毒。
• Meiosis regulating compounds
  申请人：——

  公开号：US20010003782A1

  公开（公告）日：2001-06-14

  Certain novel sterol derivatives can be used for regulating the meiosis in oocytes and in male germ cells.

  某些新型甾醇衍生物可以用于调节卵母细胞和雄性生殖细胞的减数分裂。
• Insect moulting hormones. LIV. The synthesis and biological acitvity of some alkylated ecdysone analogues
  作者：DHS Horn、BA Kelly、JF Kinnear、M Martin、EJ Middleton、RI Willing

  DOI：10.1071/ch9820629

  日期：——

  A number of ecdysone analogues were prepared, with alkyl substituent groups projecting above and below the plane of the A-ring of the analogue (37), to gain an insight into the steric requirements for the binding of ecdysteroids to the hormone receptor. Moulting hormone activities of these analogues, determined with the Calliphora bioassay, revealed that the β-face is more sensitive to projecting alkyl groups than the α-face. It is concluded that binding of the hormone to the receptor probably takes place on both sides of the A-ring but that a close fit is more important on the β-face than the α-face.

  制备了一些蜕皮激素类似物，其烷基取代基团在类似物 A 环平面的上方和下方伸出（37）。 基团在类似物 A 环平面的上方和下方突出（37）、 以深入了解蜕皮激素与激素受体结合的立体要求。蜕皮 用 Calliphora 生物测定法测定了这些类似物的蜕皮激素活性，结果表明 与 α 面相比，β 面对凸出的烷基更敏感。 结论是激素与受体的结合可能发生在 的结合可能发生在 A 环的两个面上，但密切配合在 β 面上比在α 面上更重要。 面更重要。
• Synthesis of a tritiated 3-dehydroecdysteroid putative precursor of ecdysteroid biosynthesis in Locusta migratoria
  作者：F Dolle

  DOI：10.1016/s0040-4020(01)96161-7

  日期：1991.8.19

  We have synthesized a tritiated form of 14-alpha-hydroxy-5-beta-cholest-7-ene-3,6-dione (5-beta-diketol) of high specific activity (1.74 TBq/mmol) from 7-dehydrocholesterol in seven steps with stereoselective introduction of the A/B cis ring junction as the key reaction. We have examined the ability of endocrine glands (prothoracic glands) of Locusta migratoria to use this molecule as a precursor of 3-dehydroecdysone and of ecdysone biosynthesis. A very efficient conversion of 5-beta-diketol to ecdysone and to 3-dehydroecdysone was monitored, which opens up new possibilities for the understanding of the role of 3-dehydro-compounds in ecdysteroid biosynthesis.