(-)-β-multistriatin | 59014-05-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 氧杂环己烷
• 英文名称: (-)-β-multistriatin
• 英文别名: β-multistriatin；(1S,2S,4R,5R)-5-ethyl-2,4-dimethyl-6,8-dioxabicyclo[3.2.1]octane
• CAS: 59014-05-0
• 化学式: C₁₀H₁₈O₂
• 分子量: 170.252
• InChiKey: YMBRJMLOGNZRFY-SGIHWFKDSA-N

物化性质

• 沸点：
  207.1±8.0 °C(Predicted)
• 密度：
  0.959±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (-)-β-multistriatin 在 三氟乙酸 作用下， 反应 48.0h， 生成 (-)-δ-multistriatin
  参考文献：
  名称：

  The First Stereoselective Synthesis of Racemic .beta.-Multistriatin: A Pheromone Component of the European Elm Bark Beetle Scolytus multistriatus (Marsh.)

  摘要：

  The first stereoselective synthesis of racemic beta-multistriatin (4), a component of the pheromone of the European elm bark beetle Scolytus multistriatus (Marsh.), is described. Potassium glycerate (23) is alkylated with 2-bromopentanone (26) in the presence of the phase transfer catalyst TDA-1 to form the acyloin ester 29 in 75% yield. After trimethylsilylation of 29, intramolecular acetalization of the product 30 in the presence of catalytic amounts of trimethylsilyl triflate and perchloric acid affords a mixture of diastereomers of the bicyclic lactone 28 in 65% yield. Reduction of 28 with LiAlH4 gives the cis-disubstituted dioxolane diol 34 in 82% yield. Oxidation of both the primary and secondary hydroxy groups present in 34 by a modified Swern oxidation affords the keto aldehyde 35 in 61% yield. The change of the reagent ratio of oxalyl chloride:DMSO:NEt(3) from 1.1:2.4:5 to 1.2:1.2:3 and a nonaqueous workup procedure are crucial for the success of this oxidation. Intramolecular aldol condensation of 35 catalyzed by triethylammonium chloride affords the aldol 38. Acetylation of 38 and pyrolytic distillation give the bicyclic enone 37. Oxidation of 34, aldol reaction, and formation of the enone 37 can be combined in a one-pot procedure to give an overall yield of 21%. 1,4-Addition of lithium dimethylcuprate to the enone 37 affords ketone 36 with the methyl group exclusively in the axial position. After Wittig methylenation of 36, the olefin 40 is obtained in 76% yield. Catalytic hydrogenation of 40 with PtO2 gives a 92:8 mixture of beta- and delta-multistriatin in 85% yield. Acid-catalyzed epimerization of 4 affords delta-multistriatin (5). Some of the compounds prepared (28, 36, 37, and 40) are of interest as multistriatin analogues. Olefin 40 is also a valuable storage form for the unstable beta-multistriatin (4).

  DOI：

  10.1021/jo00121a034
• 作为产物：
  描述：

  左旋葡萄糖酮 在 palladium on activated charcoal 正丁基锂 、 四甲基乙二胺 、 三氟化硼乙醚 、 ammonium chloride 、 氢气 、 4-甲基苯磺酸吡啶 、 calcium carbonate 、 mercury dichloride 作用下， 以 四氢呋喃 、 乙醚 、 正己烷 、 水 、 乙腈 为溶剂， 反应 72.5h， 生成 (-)-β-multistriatin
  参考文献：
  名称：

  左旋葡糖酮的手性合成子：（-）-δ-多striatin和（+）-prelog-djerassi乳酸的短途径

  摘要：

  摘要左旋葡萄糖senone（1）被用作短和立体选择途径合成（-）-δ-multistriatin（2）和（+）-Prelog-Djerassi乳酸（3）的手性合成子的原料。这些合成子的立体化学是在高分辨率1 Hn.mr数据的基础上讨论的。

  DOI：

  10.1016/0008-6215(84)85300-8

文献信息

• Henrichfreise, Peter; Scharf, Hans-Dieter, Liebigs Annalen, 1995, # 6, p. 1011 - 1014
  作者：Henrichfreise, Peter、Scharf, Hans-Dieter

  DOI：——

  日期：——
• Mori, Yuji; Inaba, Mitsutoshi; Suzuki, Makuto, Chemical and pharmaceutical bulletin, 1986, vol. 34, # 8, p. 3488 - 3491
  作者：Mori, Yuji、Inaba, Mitsutoshi、Suzuki, Makuto

  DOI：——

  日期：——