[(3'aR,3'bR,4S,4'R,6'aS,7'aS)-2,2,3'a,5',5'-pentamethyl-2'-oxospiro[1,3-dioxolane-4,3'-3b,4,6,6a,7,7a-hexahydro-1H-cyclopenta[a]pentalene]-4'-yl] acetate | 1253199-54-0

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: [(3'aR,3'bR,4S,4'R,6'aS,7'aS)-2,2,3'a,5',5'-pentamethyl-2'-oxospiro[1,3-dioxolane-4,3'-3b,4,6,6a,7,7a-hexahydro-1H-cyclopenta[a]pentalene]-4'-yl] acetate
• CAS: 1253199-54-0
• 化学式: C₂₀H₃₀O₅
• 分子量: 350.455
• InChiKey: MDLUPDWDRGSTCR-FUECBATOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.8
• 重原子数：
  25
• 可旋转键数：
  2
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  61.8
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  [(3'aR,3'bR,4S,4'R,6'aS,7'aS)-2,2,3'a,5',5'-pentamethyl-2'-oxospiro[1,3-dioxolane-4,3'-3b,4,6,6a,7,7a-hexahydro-1H-cyclopenta[a]pentalene]-4'-yl] acetate 在 lithium hexamethyldisilazane 、 2-硝基苯基丝氰酸酯 作用下， 以 四氢呋喃 为溶剂， 反应 17.0h， 以76%的产率得到
  参考文献：
  名称：

  A chemoenzymatic total synthesis of the hirsutene-type sesquiterpene (+)-connatusin B from toluene

  摘要：

  The first total synthesis of the hirsutene-type sesquiterpenoid natural product (+)-connatusin B (2) is reported. The cis-1,2-dihydrocatechol 3, which is obtained in enantiomerically pure form via the enzymatic dihydroxylation of toluene, served as the starting material. Diels-Alder cycloaddition and oxa-di-pi-methane rearrangement reactions represent key chemical steps in the reaction sequence leading to the cyclopropane ring-fused linear triquinane 14. Reductive cleavage of the three-membered ring within this framework and various functional group interconversions then provide the title compound 2. (C) 2010 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2010.07.059
• 作为产物：
  描述：

  [(1'R,3'S,4S,7'R,8'R,9'R)-2,2,7',10',10'-pentamethyl-5'-oxospiro[1,3-dioxolane-4,6'-tetracyclo[6.3.0.02,4.03,7]undecane]-9'-yl] acetate 在 偶氮二异丁腈 、 三正丁基氢锡 作用下， 以 苯 为溶剂， 反应 6.0h， 以98%的产率得到[(3'aR,3'bR,4S,4'R,6'aS,7'aS)-2,2,3'a,5',5'-pentamethyl-2'-oxospiro[1,3-dioxolane-4,3'-3b,4,6,6a,7,7a-hexahydro-1H-cyclopenta[a]pentalene]-4'-yl] acetate
  参考文献：
  名称：

  A chemoenzymatic total synthesis of the hirsutene-type sesquiterpene (+)-connatusin B from toluene

  摘要：

  The first total synthesis of the hirsutene-type sesquiterpenoid natural product (+)-connatusin B (2) is reported. The cis-1,2-dihydrocatechol 3, which is obtained in enantiomerically pure form via the enzymatic dihydroxylation of toluene, served as the starting material. Diels-Alder cycloaddition and oxa-di-pi-methane rearrangement reactions represent key chemical steps in the reaction sequence leading to the cyclopropane ring-fused linear triquinane 14. Reductive cleavage of the three-membered ring within this framework and various functional group interconversions then provide the title compound 2. (C) 2010 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2010.07.059