6β-chloroandrostan-3β,5α-diol | 78094-08-3

• 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: 6β-chloroandrostan-3β,5α-diol
• CAS: 78094-08-3
• 化学式: C₁₉H₃₁ClO₂
• 分子量: 326.907
• InChiKey: QUOCJJMPWXPJRM-OTMXHXQLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.11
• 重原子数：
  22.0
• 可旋转键数：
  0.0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  40.46
• 氢给体数：
  2.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  6β-chloroandrostan-3β,5α-diol 在 chromium(VI) oxide 、 盐酸 、 magnesium sulfate 作用下， 以 二氯甲烷 、 氯仿 、 丙酮 为溶剂， 反应 2.5h， 生成 6α-chloroandrost-4-en-3-one
  参考文献：
  名称：

  Synthesis of some analogues of blattellastanoside A, the steroidal aggregation pheromone of the German cockroach

  摘要：

  Blattellastanoside A, the aggregation pheromone of the German cockroach, is a chlorinated steroid glucoside with the 5 beta-stigmastane skeleton. Its analogues were synthesized in order to clarify the structure-activity relationship. They are 1a with the 5 beta-cholestane skeleton, 1b with the 5 beta-androstane skeleton, Ic with a fluorine substituent instead of the chlorine and Id with a beta-D-galactopyranose instead of the beta-D-glucopyranose of the original pheromone. Their bioassay shows that la and Ic are active, while Ib and Id are totally devoid of pheromone activity. The aglycone of blattellastanosides A and B were active. Copyright (C) 1996 Elsevier Science Ltd

  DOI：

  10.1016/0968-0896(96)00018-1
• 作为产物：
  描述：

  5,6-epoxyandrostan-3β-ol 在 盐酸 作用下， 以 氯仿 为溶剂， 反应 1.0h， 生成 6β-chloroandrostan-3β,5α-diol
  参考文献：
  名称：

  Synthesis of some analogues of blattellastanoside A, the steroidal aggregation pheromone of the German cockroach

  摘要：

  Blattellastanoside A, the aggregation pheromone of the German cockroach, is a chlorinated steroid glucoside with the 5 beta-stigmastane skeleton. Its analogues were synthesized in order to clarify the structure-activity relationship. They are 1a with the 5 beta-cholestane skeleton, 1b with the 5 beta-androstane skeleton, Ic with a fluorine substituent instead of the chlorine and Id with a beta-D-galactopyranose instead of the beta-D-glucopyranose of the original pheromone. Their bioassay shows that la and Ic are active, while Ib and Id are totally devoid of pheromone activity. The aglycone of blattellastanosides A and B were active. Copyright (C) 1996 Elsevier Science Ltd

  DOI：

  10.1016/0968-0896(96)00018-1

文献信息

• The reaction of lead tetraacetate with 3.BETA.-hydroxy steroids.
  作者：RIKIO OHUCHI、KENYU SHIBATA、NOBUAKI YAMAKOSHI、HIROMU MORI

  DOI：10.1248/cpb.29.43

  日期：——

  It was found that the reaction of lead tetraacetate with 3β-hydroxy steroids of the 5α-series gave the corresponding 3β, 19-oxido steroids. Only poor yields were obtained in the cases of 3β-hydroxy steroids having no substituent at C-5 (5α-H). Substitution at the 5α-position by an electronegative group such as halogen or acetoxyl enhanced the yield of the 3β, 19-oxido compound. The best result was obtained when a steroid was heated with lead tetraacetate in benzene in the presence of calcium carbonate and a trace of benzoyl peroxide.

  发现四乙酸铅与5α系列3β-羟基甾体化合物的反应产生了相应的3β, 19-氧代甾体化合物。在没有C-5（5α-H）取代基的3β-羟基甾体化合物的情况下，仅得到了较低的产率。通过在5α位引入电负性基团如卤素或乙酰氧基能提高3β, 19-氧代化合物的产率。当甾体化合物在碳酸钙和微量过氧化苯甲酰存在下，与四乙酸铅在苯中加热时，得到了最佳结果。