2-acetyl-4,4,6-triethyl-3-hydroxy-5-methoxycyclohexa-2,5-dien-1-one | 946148-01-2

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 乙烯基酸
• 英文名称: 2-acetyl-4,4,6-triethyl-3-hydroxy-5-methoxycyclohexa-2,5-dien-1-one
• 英文别名: 2-acetyl-4,4,6-triethyl-3-hydroxy-5-methoxycyclohexa-2,5-dienone
• CAS: 946148-01-2
• 化学式: C₁₅H₂₂O₄
• 分子量: 266.337
• InChiKey: PSTBXKJYYGBUCP-UHFFFAOYSA-N

物化性质

• 沸点：
  426.0±45.0 °C(predicted)
• 密度：
  1.10±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.09
• 重原子数：
  19.0
• 可旋转键数：
  5.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.6
• 拓扑面积：
  63.6
• 氢给体数：
  1.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  2-acetyl-4,4,6-triethyl-3-hydroxy-5-methoxycyclohexa-2,5-dien-1-one 在 硫酸 、 碘 、 potassium hydroxide 作用下， 以 乙醇 、 水 、 二甲基亚砜 为溶剂， 反应 1.0h， 生成
  参考文献：
  名称：

  Antitumor Agents. 284. New Desmosdumotin B Analogues with Bicyclic B-Ring as Cytotoxic and Antitubulin Agents

  摘要：

  We previously reported that the biological activity of analogues of desmosdumotin B (1) was dramatically changed depending on the B-ring system. A naphthalene B-ring analogue 3 exerted potent in vitro activity against a diverse panel of human tumor cell lines with GI(50) values of 0.8-2.1 mu M. In contrast, 1 analogues with a phenyl B-ring showed unique selective activity against P-glycoprotein (P-gp) over-expressing multidrug resistant cell line. We have now prepared and evaluated, 1 analogues with bicyclic or tricyclic aromatic B-ring systems as in vitro inhibitors of human cancer cell line proliferation. Among all synthesized derivatives, 21 with a benzo[b]thiophenyl B-ring was highly active, with GI(50) values of 0.06-0.16 mu M, and this activity was not influenced by overexpression of P-gp. Furthermore, 21 inhibited tubulin assembly in vitro with an IC(50) value of 2.0 mu M and colchicine binding by 7896 as well as cellular microtubule polymerization and spindle formation.

  DOI：

  10.1021/jm1011947
• 作为产物：
  描述：

  2,4,6-三羟基苯乙酮一水合物 在 sodium methylate 作用下， 以 甲醇 、 乙醚 、 乙酸乙酯 为溶剂， 反应 10.0h， 生成 2-acetyl-4,4,6-triethyl-3-hydroxy-5-methoxycyclohexa-2,5-dien-1-one
  参考文献：
  名称：

  Antitumor Agents 259. Design, Syntheses, and Structure−Activity Relationship Study of Desmosdumotin C Analogs

  摘要：

  Desmosdumotin C (1) and its analogs previously showed potent, selective in vitro anticancer activity. To explore structure-activity relationships of 1 and further increase potency and selectivity, 15 novel analogs (7-15 and 21-26) were synthesized and evaluated for cytotoxity against several human tumor cell lines, as well as inhibition of human endothelial (HUVEC) replication. 4-Bromo-3',3',5'-tripropyl analog 26 showed significant cytotoxity against A549, A431, 1A9, and HCT-8 with ED50 values of 1.0, 1.2, 0.9, and 1.3 mu g/mL, respectively. Compound 26 also strongly inhibited the growth of matched tumor cells, KB-VIN and its parent cell KB. Furthermore, analogs 13 and 21 were over 5-fold more potent against KB-VIN than KB. Bromination of ring-B and tripropyl functionalization of ring-A enhanced activity, while alkylation of ring-B promoted KB-VIN/KB selectivity. 2-Furyl analog 16 showed selective activity against HUVEC, suggesting that it may have potential as a new prototype for angiogenesis inhibition.

  DOI：

  10.1021/jm0702534

文献信息

• Antitumor Agents 260. New Desmosdumotin B Analogues with Improved In Vitro Anticancer Activity
  作者：Kyoko Nakagawa-Goto、Kenneth F. Bastow、Tzu-Hsuan Chen、Susan L. Morris-Natschke、Kuo-Hsiung Lee

  DOI：10.1021/jm701208v

  日期：2008.6.1

  Sixteen analogues (3-16, 33, and 48) of the unique flavonoid desmosdumotin B (1) were prepared and evaluated as in vitro inhibitors of the human KB cancer cell line and its MDR subclone, KB-VIN. 6,8,8-Triethyl analogues 10-13 showed enhanced KB-VIN selectivity. In particular, 4'-alkyl derivatives 11 (4'-Me) and 12 (4'-Et) showed significant ED50 values of 0.03 and 0.025 mu g/mL, respectively, against KB-VIN with selectivities of > 460- and 320-fold compared with that of KB. This report is the first to describe compounds showing such high activity against MDR cells versus non-MDR cells. The unique activity of 1-analogues is likely MDR-mediated because cotreatment with verapamil, a P-gp inhibitor, partially reversed the selective toxicity of both 1 and 10. Interestingly, only 1-analogues with a naphthalene B-ring (8 and 14) showed significant cytotoxic activity against KB; and other cancer cell lines. Thus, 1-analogues might be a new class of potent drug candidates, especially as 11 and 12 express direct selective action against tumors expressing MDR.
• Antitumor Agents. 280. Multidrug Resistance-Selective Desmosdumotin B Analogues
  作者：Kyoko Nakagawa-Goto、Po-Cheng Chang、Chin-Yu Lai、Hsin-Yi Hung、Tzu-Hsuan Chen、Pei-Chi Wu、Hao Zhu、Alexander Sedykh、Kenneth F. Bastow、Kuo-Hsiung Lee

  DOI：10.1021/jm100846r

  日期：2010.9.23

  6,6,8-Triethyldesmosdumotin B (2) was discovered as a MDR-selective flavonoid with significant in vitro anticancer activity against a multidrug resistant (MDR) cell line (KB-VIN) but without activity against the parent cells (KB). Additional 2 analogues were synthesized and evaluated to determine the effect of B-ring modifications on MDR-selectivity. Analogues with a B-ring Me (3) or Et (4) group had substantially increased MDR selectivity. Three new disubstituted analogues, 35, 37, and 49, also had high collateral sensitivity (CS) indices of 273, 250, and 100, respectively. Furthermore, 2-4 also displayed MDR selectivity in an MDR hepatoma-cell system. While 2-4 showed either no or very weak inhibition of cellular P-glycoprotein (P-gp) activity, they either activated or inhibited the actions of the first generation P-gp inhibitors verapamil or cyclosporin, respectively.
• Development of a Novel Class of Tubulin Inhibitor from Desmosdumotin B with a Hydroxylated Bicyclic B-Ring
  作者：Kyoko Nakagawa-Goto、Akifumi Oda、Ernest Hamel、Emika Ohkoshi、Kuo-Hsiung Lee、Masuo Goto

  DOI：10.1021/jm501859j

  日期：2015.3.12

  A series of newly synthesized hydroxylated analogues of triethyldesmosdumotin B (TEDB) with a bicyclic B-ring exhibited a significantly different mode of action for affecting microtubule dynamics and spindle formation but had the same antiproliferative activity spectrum, including activity against multidrug-resistant tumors. These analogues efficiently induced cell cycle arrest at prometaphase and caused formation of immature multipolar spindles. 6'-Hydroxyl TEDB-TB (8) disrupted bipolar spindle formation but had a negligible effect on interphase microtubules. On the basis of the predicted binding modes of the new compounds with tubulin dimer, compound 4 forms three hydrogen bonds (H-bonds) only with alpha-tubulin at the colchicine site; in contrast, 8 forms H-bonds with both alpha- and beta-tubulin. We predict that, when a compound/ligand, such as 8, forms H-bonds to both alpha- and beta-tubulins, spindle formation is disrupted more than the dynamics of interphase microtubules. This result may reflect the well-known greater dynamicity of spindle microtubules as compared with interphase microtubules.
• Antitubulin effects of aminobenzothiophene-substituted triethylated chromones
  作者：Yukiko Kobayashi、Yohei Saito、Masuo Goto、Kyoko Nakagawa-Goto

  DOI：10.1016/j.bmcl.2017.04.055

  日期：2017.6

  In the course of our continuing studies on the 2-(benzo[b] thiophene-3'-yl)-6,8,8-triethyldesmosdumotin B (TEDB-TB) series, we designed and synthesized nine amino-TEDB-TB derivatives to improve pharmaceutical properties, identify structure activity relationships, and discover novel antitubulin agents. Among all newly synthesized amino-TEDB-TBs, the 5'- and 6'-amino derivatives, 6 and 7, exhibited significant antiproliferative activity against five human tumor cell lines, including an MDR subline overexpressing P-gp. The IC50 values of 0.50-1.01 mu M were 3-6 times better than those of previously reported hydroxy-TEDB-TBs. Compounds 6 and 7 inhibited tubulin polymerization, induced both depolymerization of interphase microtubules and multiple spindle formations, and caused cell arrest at prometaphase. Among all compounds, compound 7 scored best pharmaceutically with LogP 2.11 and biologically with greater antiproliferative activity and induction of cell cycle arrest at prometaphase. (C) 2017 Published by Elsevier Ltd.