雷藤二萜醌 B | 142937-50-6

• 物质功能分类: 天然产物 - 萜类
• 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
• 中文名称: 雷藤二萜醌 B
• 中文别名: 雷藤二萜醌B
• 英文名称: 19-hydroxy-3,11,14-trioxoabieta-8,12-diene
• 英文别名: triptoquinone B；(4bS,8S,8aR)-8-(hydroxymethyl)-4b,8-dimethyl-2-propan-2-yl-6,8a,9,10-tetrahydro-5H-phenanthrene-1,4,7-trione
• CAS: 142937-50-6
• 化学式: C₂₀H₂₆O₄
• 分子量: 330.424
• InChiKey: RYYRZMIBKOKIRO-UIAACRFSSA-N

物化性质

• 沸点：
  475.4±45.0 °C(Predicted)
• 密度：
  1.19±0.1 g/cm3(Predicted)
• 溶解度：
  溶于氯仿、二氯甲烷、乙酸乙酯、DMSO、丙酮等。

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  24
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.65
• 拓扑面积：
  71.4
• 氢给体数：
  1
• 氢受体数：
  4

安全信息

• 储存条件：
  储存条件：2-8℃，干燥，密闭。

制备方法与用途

三托醌B（+）-三托醌B是一种倍半萜生物碱，也是一种白细胞介素-1抑制剂。研究显示，Triptoquinone B能显著抑制人外周血单个核细胞释放白细胞介素1α和β。

反应信息

• 作为反应物：
  描述：

  雷藤二萜醌 B 在 sodium dithionite 作用下， 以 四氢呋喃 、 水 为溶剂， 反应 0.5h， 生成 (1S,4aS,10aR)-5,8-Dihydroxy-1-hydroxymethyl-7-isopropyl-1,4a-dimethyl-3,4,4a,9,10,10a-hexahydro-1H-phenanthren-2-one
  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：

  Bromomethyl-((2S,4aR)-7-isopropyl-8-methoxy-1,4a-dimethyl-2,3,4,4a,9,10-hexahydro-phenanthren-2-yloxy)-dimethyl-silane 在 sodium hypochlorite 、 potassium dihydrogenphosphate 、 三氯化铝 、 potassium nitrososulfonate 、 偶氮二异丁腈 、 三丁基氯化锡 、 双氧水 、 sodium cyanoborohydride 、 potassium hydrogencarbonate 、 乙硫醇 作用下， 以 四氢呋喃 、 甲醇 、 乙醇 、 水 、 溶剂黄146 、 叔丁醇 为溶剂， 生成 雷藤二萜醌 B
  参考文献：
  名称：

  Enantiocontrolled total synthesis of the diterpenoids, triptoquinone B, C and triptocallol

  摘要：

  An efficient and enantiocontrolled synthesis of triptoquinone B and C, which possess interleukin-1 inhibitory activity, has been accomplished employing the lipase-catalyzed kinetic resolution and a highly diastereoselective radical cyclization as key synthetic steps. In addition, the first total synthesis of triptocallol has been achieved utilizing the same strategy. (C) 1997 Elsevier Science Ltd.

  DOI：

  10.1016/s0040-4039(97)00841-1

文献信息

• Glucosyltransferase Capable of Catalyzing the Last Step in Neoandrographolide Biosynthesis
  作者：Yuan Li、Hui-Xin Lin、Jian Wang、Jian Yang、Chang-Jiang-Sheng Lai、Xing Wang、Bao-Wei Ma、Jin-Fu Tang、Yong Li、Xin-Lin Li、Juan Guo、Wei Gao、Lu-Qi Huang

  DOI：10.1021/acs.orglett.8b02146

  日期：2018.10.5

  ApUGT, a diterpene glycosyltransferase from Andrographis paniculata, could transfer a glucose to the C-19 hydroxyl moiety of andrograpanin to form neoandrographolide. This glycosyltransferase has a broad substrate scope, and it can glycosylate 26 natural and unnatural compounds of different structural types. This study provides a basis for exploring the glycosylation mechanism of ent-labdane-type diterpenes and plays an important role in diversifying the structures used in drug discovery.