(E)-3-(3,5-dibromo-4-hydroxyphenyl)-2-(hydroxyimino)propanoic acid | 343256-43-9

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 苯丙酸
• 英文名称: (E)-3-(3,5-dibromo-4-hydroxyphenyl)-2-(hydroxyimino)propanoic acid
• 英文别名: (2E)-3-(3,5-dibromo-4-hydroxyphenyl)-2-hydroxyiminopropanoic acid
• CAS: 343256-43-9
• 化学式: C₉H₇Br₂NO₄
• 分子量: 352.967
• InChiKey: OMVGAKCGHIVRQC-KPKJPENVSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  16
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.11
• 拓扑面积：
  90.1
• 氢给体数：
  3
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  (E)-3-(3,5-dibromo-4-hydroxyphenyl)-2-(hydroxyimino)propanoic acid 在 三氟乙酸 作用下， 以 二氯甲烷 为溶剂， 以79%的产率得到2,6-dibromo-4-cyanomethylphenol
  参考文献：
  名称：

  合成一些酪氨酸衍生的海洋海绵代谢物的方法：verongamine和purealidin N的合成。

  摘要：

  用乙醇中的Na（2）WO（4）/ H（2）O（2），丙酮中的二甲基二环氧乙烷或乙醇中的甲基三氧tri / H（2）O（2）氧化酪氨酸乙酯（7）得到相应的酪氨酸肟（8）高产。根据反应条件，芳香环的受控溴化得到一溴肟（9），二溴肟（10）或螺异恶唑啉（11）。通过氧化O-甲基溴酪氨酸甲酯并用组胺酰胺化所得肟酯（14），可以合成已知的代谢产物verongamine（15）。通过酯的碱水解和酸催化的脱羧作用，将单和二溴酪氨酸肟衍生物（9和10）进一步转化为天然腈（16和17）。二溴苯甲醛（20b）与膦酸酯（18）的Wadsworth-Emmons烯烃化反应得到丙酮酸甲硅烷基醚（21b）。脱保护并原位生成肟，得到肟酯（23b）。尝试纯化丙酮酸酯会导致高醛缩合，生成丁烯内酯（22）。肟酯（23b）与组胺的酰胺化反应，然后MOM醚的脱保护反应，首次合成了Purealidin N（28）。用与聚合物结合的

  DOI：

  10.1021/jo010015v
• 作为产物：
  描述：

  L-酪氨酸甲酯 在 N-溴代丁二酰亚胺(NBS) 、 sodium tungstate (VI) dihydrate 、 双氧水 、 lithium hydroxide 作用下， 以 四氢呋喃 、 乙醇 、 水 、 乙腈 为溶剂， 反应 9.25h， 生成 (E)-3-(3,5-dibromo-4-hydroxyphenyl)-2-(hydroxyimino)propanoic acid
  参考文献：
  名称：

  Epigenetic profiling of the antitumor natural product psammaplin A and its analogues

  摘要：

  A collection of analogues of the dimeric natural product psammaplin A that differ in the substitution on the ( halo) tyrosine aryl ring, the oxime and the diamine connection has been synthesized. The effects on cell cycle, induction of differentiation and apoptosis of the natural-product inspired series were measured on the human leukaemia U937 cell line. Epigenetic profiling included induction of p21(WAF1), effects on global H3 histone and tubulin acetylation levels as well as in vitro enzymatic assays using HDAC1, DNMT1, DNMT3A, SIRT1 and a peptide domain with p300/CBP HAT activity. Whereas the derivatives of psammaplin A with modifications in the length of the connecting chain, the oxime bond and the disulfide unit showed lower potency, the analogues with changes on the bromotyrosine ring exhibited activities comparable to those of the parent compound in the inhibition of HDAC1 and in the induction of apoptosis. The lack of HDAC1 activity of analogues modified on the disulfide bond suggests that its cleavage must occur in cells to produce the monomeric Zn2+-chelating thiol. This assumption is consistent with the molecular modelling of the complex of psammaplin A thiol with h-HDAC8. Only a weak inhibition of DNMT1, DNMT3A and residual activities with SIRT1 and a p300/CBP HAT peptide were measured for these compounds. (C) 2010 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2010.12.026

文献信息

• Approaches to the Synthesis of Some Tyrosine-Derived Marine Sponge Metabolites:  Synthesis of Verongamine and Purealidin N
  作者：Todd R. Boehlow、J. Jonathan Harburn、Christopher D. Spilling

  DOI：10.1021/jo010015v

  日期：2001.5.1

  oxime (8) in high yield. Controlled bromination of the aromatic ring gave the monobromo oxime (9), the dibromo oxime (10), or the spiroisoxazoline (11) depending upon reaction conditions. Synthesis of the known metabolite verongamine (15) was achieved by oxidation of O-methyl bromotyrosine methyl ester and amidation of the resulting oxime ester (14) with histamine. The mono- and di-bromotyrosine oxime derivatives

  用乙醇中的Na（2）WO（4）/ H（2）O（2），丙酮中的二甲基二环氧乙烷或乙醇中的甲基三氧tri / H（2）O（2）氧化酪氨酸乙酯（7）得到相应的酪氨酸肟（8）高产。根据反应条件，芳香环的受控溴化得到一溴肟（9），二溴肟（10）或螺异恶唑啉（11）。通过氧化O-甲基溴酪氨酸甲酯并用组胺酰胺化所得肟酯（14），可以合成已知的代谢产物verongamine（15）。通过酯的碱水解和酸催化的脱羧作用，将单和二溴酪氨酸肟衍生物（9和10）进一步转化为天然腈（16和17）。二溴苯甲醛（20b）与膦酸酯（18）的Wadsworth-Emmons烯烃化反应得到丙酮酸甲硅烷基醚（21b）。脱保护并原位生成肟，得到肟酯（23b）。尝试纯化丙酮酸酯会导致高醛缩合，生成丁烯内酯（22）。肟酯（23b）与组胺的酰胺化反应，然后MOM醚的脱保护反应，首次合成了Purealidin N（28）。用与聚合物结合的
• Epigenetic profiling of the antitumor natural product psammaplin A and its analogues
  作者：José García、Gianluigi Franci、Raquel Pereira、Rosaria Benedetti、Angela Nebbioso、Fátima Rodríguez-Barrios、Hinrich Gronemeyer、Lucia Altucci、Angel R. de Lera

  DOI：10.1016/j.bmc.2010.12.026

  日期：2011.6

  A collection of analogues of the dimeric natural product psammaplin A that differ in the substitution on the ( halo) tyrosine aryl ring, the oxime and the diamine connection has been synthesized. The effects on cell cycle, induction of differentiation and apoptosis of the natural-product inspired series were measured on the human leukaemia U937 cell line. Epigenetic profiling included induction of p21(WAF1), effects on global H3 histone and tubulin acetylation levels as well as in vitro enzymatic assays using HDAC1, DNMT1, DNMT3A, SIRT1 and a peptide domain with p300/CBP HAT activity. Whereas the derivatives of psammaplin A with modifications in the length of the connecting chain, the oxime bond and the disulfide unit showed lower potency, the analogues with changes on the bromotyrosine ring exhibited activities comparable to those of the parent compound in the inhibition of HDAC1 and in the induction of apoptosis. The lack of HDAC1 activity of analogues modified on the disulfide bond suggests that its cleavage must occur in cells to produce the monomeric Zn2+-chelating thiol. This assumption is consistent with the molecular modelling of the complex of psammaplin A thiol with h-HDAC8. Only a weak inhibition of DNMT1, DNMT3A and residual activities with SIRT1 and a p300/CBP HAT peptide were measured for these compounds. (C) 2010 Elsevier Ltd. All rights reserved.