(+)-variabilin

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 异黄酮类化合物
• 英文名称: (+)-variabilin
• 英文别名: (6aS,11aS)-3,9-dimethoxy-6,11a-dihydro-[1]benzofuro[3,2-c]chromen-6a-ol
• 化学式: C₁₇H₁₆O₅
• 分子量: 300.311
• InChiKey: VVPGAJNPGZZNBM-DLBZAZTESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  22
• 可旋转键数：
  2
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.29
• 拓扑面积：
  57.2
• 氢给体数：
  1
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  (+)-variabilin 在 二苯基膦酸锂 作用下， 以 二丁醚 为溶剂， 以29%的产率得到3,6,9-三羟基紫檀素
  参考文献：
  名称：

  Asymmetric Total Syntheses of (−)-Variabilin and (−)-Glycinol

  摘要：

  Total syntheses of (-)-variabilin and (-)-glycinol have been accomplished, using the catalytic, asymmetric "Interrupted" Feist-Benary reaction (IFB) as the key transformation to introduce both stereogenic centers. A monoquinidine pyrimidinyl ether catalyst affords the IFB products In over 90% ee in both cases. Other key steps include an intramolecular Buohwald-Hartwig coupling and a nickel-catalyzed aryl tosylate reduction.

  DOI：

  10.1021/ol201332u
• 作为产物：
  描述：

  6a,11a-dihydro-6a-hydroxy-3,9-dimethoxy-6H-benzofuro[3,2-c]chromen-7-yl 4-methylbenzenesulfonate 在 锂硼氢 、 nickel dichloride 作用下， 以 四氢呋喃 为溶剂， 反应 7.0h， 以90%的产率得到(+)-variabilin
  参考文献：
  名称：

  Asymmetric Total Syntheses of (−)-Variabilin and (−)-Glycinol

  摘要：

  Total syntheses of (-)-variabilin and (-)-glycinol have been accomplished, using the catalytic, asymmetric "Interrupted" Feist-Benary reaction (IFB) as the key transformation to introduce both stereogenic centers. A monoquinidine pyrimidinyl ether catalyst affords the IFB products In over 90% ee in both cases. Other key steps include an intramolecular Buohwald-Hartwig coupling and a nickel-catalyzed aryl tosylate reduction.

  DOI：

  10.1021/ol201332u

文献信息

• Synthesis of isoflavonoids. Enantiopure cis- and trans-6a-hydroxypterocarpans and a racemic trans-pterocarpan
  作者：Theunis G van Aardt、Hendrik van Rensburg、Daneel Ferreira

  DOI：10.1016/s0040-4020(01)00679-2

  日期：2001.8

  Aldol condensation between phenylacetates and benzaldehydes affords 2,3-diaryl-3-hydroxypropanoates which serve as common precursors to both the first racemic trans-pterocarpan and enantiopure cis- and trans-6a-hydroxypterocarpans.

  苯乙酸酯和苯甲醛之间的醛醇缩合得到2,3-二芳基-3-羟基丙酸酯，它们是第一个外消旋的反式-罗汉松和对映纯的顺式和反式-6a-羟基罗汉松的常见前体。