4-Bromo-2-isopropyl-1,6-dimethoxynaphthalene | 146356-61-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 萘
• 英文名称: 4-Bromo-2-isopropyl-1,6-dimethoxynaphthalene
• 英文别名: 4-Bromo-1,6-dimethoxy-2-propan-2-ylnaphthalene
• CAS: 146356-61-8
• 化学式: C₁₅H₁₇BrO₂
• 分子量: 309.203
• InChiKey: HPFGFSRSFPBJDA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.9
• 重原子数：
  18
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 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：

  4-Bromo-2-isopropyl-1,6-dimethoxynaphthalene 在 四氢吡咯 、 氢氧化钾 、 copper(l) iodide 、 乙醇 、 3 A molecular sieve 、 sodium methylate 、 sodium 、 草酸 作用下， 以 甲醇 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 95.0h， 生成 5,8-Dimethoxy-1,4a-dimethyl-7-isopropyl-4,4a,9,10-tetrahydro-2(3H)-phenanthrenone
  参考文献：
  名称：

  Synthetic studies on diterpenoid quinones with interleukin-1 inhibitory activity. Total synthesis of (.+-.)- and (+)-triptoquinone A

  摘要：

  An efficient first total synthesis of (+/-)- and (+)-triptoquinone A (1), a novel diterpenoid quinone with significant inhibitory activity against interleukin-1 releases, has been completed. Birch reduction of tricyclic enone (+/-)-7, prepared from known 6-methoxy-2-isopropyl-1-naphthol (22), which is readily available in large quantities, was followed by immediate enolate trapping to provide silyl enol ether (+/-)-30. Compound 30 was converted into carboxylic acid (+/-)-4 via the corresponding enol triflate (+/-)-31 either by sequential palladium-catalyzed carbonylation and oxidation or by direct carboxylation. The total synthesis of (+/-)-1 was completed by oxidation of (+/-)-4 with CAN in 12 steps from 22 in 19% overall yield at best. A second, enantioselective total synthesis of (+)-1 was accomplished via (+/-)-7, which was prepared by (-)-N- [4-(trifluoromethyl)benzyl]cinchonidinium bromide (33) catalyzed asymmetric Michael reaction of 6 with ethyl vinyl ketone and a subsequent aldol condensation. The absolute structures of triptoquinone B (2) and C (3), which were isolated concomitantly with triptoquinone A from the same plant sources, were established by a series of chemical reactions based on (+)-7.

  DOI：

  10.1021/jo00081a021
• 作为产物：
  描述：

  2-isopropyl-6-methoxy-1-naphthol 在 氢氧化钾 、 N-溴代丁二酰亚胺(NBS) 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 3.75h， 生成 4-Bromo-2-isopropyl-1,6-dimethoxynaphthalene
  参考文献：
  名称：

  Synthetic studies on diterpenoid quinones with interleukin-1 inhibitory activity. Total synthesis of (.+-.)- and (+)-triptoquinone A

  摘要：

  An efficient first total synthesis of (+/-)- and (+)-triptoquinone A (1), a novel diterpenoid quinone with significant inhibitory activity against interleukin-1 releases, has been completed. Birch reduction of tricyclic enone (+/-)-7, prepared from known 6-methoxy-2-isopropyl-1-naphthol (22), which is readily available in large quantities, was followed by immediate enolate trapping to provide silyl enol ether (+/-)-30. Compound 30 was converted into carboxylic acid (+/-)-4 via the corresponding enol triflate (+/-)-31 either by sequential palladium-catalyzed carbonylation and oxidation or by direct carboxylation. The total synthesis of (+/-)-1 was completed by oxidation of (+/-)-4 with CAN in 12 steps from 22 in 19% overall yield at best. A second, enantioselective total synthesis of (+)-1 was accomplished via (+/-)-7, which was prepared by (-)-N- [4-(trifluoromethyl)benzyl]cinchonidinium bromide (33) catalyzed asymmetric Michael reaction of 6 with ethyl vinyl ketone and a subsequent aldol condensation. The absolute structures of triptoquinone B (2) and C (3), which were isolated concomitantly with triptoquinone A from the same plant sources, were established by a series of chemical reactions based on (+)-7.

  DOI：

  10.1021/jo00081a021

文献信息

• NITROGEN MONOXIDE SYNTHESIS INHIBITOR
  申请人：OTSUKA PHARMACEUTICAL CO., LTD.

  公开号：EP0676196A1

  公开（公告）日：1995-10-11

  A nitrogen monoxide synthesis inhibitor containing as the active ingredient at least one member selected from phenanthrene derivatives represented by the compounds of general formula (1) and salts thereof; it is useful for preventing and treating various diseases caused by nitrogen monoxide, such as endotoxin shock.

  一种一氧化氮合成抑制剂，含有至少一种选自通式（1）化合物所代表的菲衍生物及其盐类的活性成分；可用于预防和治疗一氧化氮引起的各种疾病，如内毒素休克。
• Total synthesis of (±)-triptoquinone A
  作者：Kozo Shishido、Kiyoto Goto、Shizuka Miyoshi、Yoshihisa Takaishi、Masayuki Shibuya

  DOI：10.1016/s0040-4039(00)60582-8

  日期：1993.1

  A concise and practical total synthesis of (+/-)-triptoquinone A (1), a novel interleukin-1 inhibitor isolated from Tripterygium wilfordii var. regelii, has been achieved in 11 steps from the known naphthol 2.
• US5654343A
  申请人：——

  公开号：US5654343A

  公开（公告）日：1997-08-05
• Synthetic studies on diterpenoid quinones with interleukin-1 inhibitory activity. Total synthesis of (.+-.)- and (+)-triptoquinone A
  作者：Kozo Shishido、Kiyoto Goto、Shizuka Miyoshi、Yoshihisa Takaishi、Masayuki Shibuya

  DOI：10.1021/jo00081a021

  日期：1994.1

  An efficient first total synthesis of (+/-)- and (+)-triptoquinone A (1), a novel diterpenoid quinone with significant inhibitory activity against interleukin-1 releases, has been completed. Birch reduction of tricyclic enone (+/-)-7, prepared from known 6-methoxy-2-isopropyl-1-naphthol (22), which is readily available in large quantities, was followed by immediate enolate trapping to provide silyl enol ether (+/-)-30. Compound 30 was converted into carboxylic acid (+/-)-4 via the corresponding enol triflate (+/-)-31 either by sequential palladium-catalyzed carbonylation and oxidation or by direct carboxylation. The total synthesis of (+/-)-1 was completed by oxidation of (+/-)-4 with CAN in 12 steps from 22 in 19% overall yield at best. A second, enantioselective total synthesis of (+)-1 was accomplished via (+/-)-7, which was prepared by (-)-N- [4-(trifluoromethyl)benzyl]cinchonidinium bromide (33) catalyzed asymmetric Michael reaction of 6 with ethyl vinyl ketone and a subsequent aldol condensation. The absolute structures of triptoquinone B (2) and C (3), which were isolated concomitantly with triptoquinone A from the same plant sources, were established by a series of chemical reactions based on (+)-7.