dimethyl α-ethylhomoterephthalate | 88392-91-0

• 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: dimethyl α-ethylhomoterephthalate
• 英文别名: Methyl 4-(1-methoxy-1-oxobutan-2-yl)benzoate
• CAS: 88392-91-0
• 化学式: C₁₃H₁₆O₄
• 分子量: 236.268
• InChiKey: HVOZQRMQZWRPSP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.5
• 重原子数：
  17
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  dimethyl α-ethylhomoterephthalate 在 sodium hydroxide 、 sodium hydride 作用下， 以 二甲基亚砜 、 N,N-二甲基甲酰胺 为溶剂， 反应 2.66h， 生成 4-[2-[(2,4-Diaminopteridin-6-yl)methyl]-1-methoxy-1-oxobutan-2-yl]benzoic acid
  参考文献：
  名称：

  Analogues of the Potent Nonpolyglutamatable Antifolate N^α-(4-Amino-4-deoxypteroyl)-N^δ-hemiphthaloyl-l-ornithine (PT523) with Modifications in the Side Chain, p-Aminobenzoyl Moiety, or 9,10-Bridge:  Synthesis and in Vitro Antitumor Activity

  摘要：

  Seven N-alpha-(4-amino-4-deoxypteroyl)-N-sigma-hemiphtha (2, PT523) analogues were synthesized by modifications of the literature synthesis of the corresponding AMT (1) analogues and were tested as inhibitors of tumor cell growth. in growth assays against cultured CCRF-CEM human leukemic cells exposed to drug for 72 h, the IC50 values of analogues in which N-10 was replaced by CH2 and CHMe were found to be 0.55 +/- 0.07 and 0.63 +/- 0.08 nM, and thus these analogues are more potent than 1 (IC50 = 4.4 +/- 1.0 nM) or 2 (IC50 = 1.5 +/-: 0.39 nM). The 10-ethyl-10-deaza analogue of 2 (IC50 = 1.2 +/- 0.25 nM) was not statistically different from 2 but was more potent than edatrexate, the 10-ethyl-10-deaza analogue of 1, which had an IC50 of 3.3 +/- 0.36 nM. In contrast, the analogue of 2 with both an ethyl and a CO2Me group at the 10-position had an IC50 of 54 +/- 4.9 nM, showing this modification to be unfavorable. The 4-amino-1-naphthoic acid analogue of 2 had an IC50 Of 1.2 +/- 0.22 nM, indicating that replacement of the p-aminobenzoic acid (pABA) moiety does not diminish cytotoxicity. The analogues in which the (CH2)(3) Side chain was replaced by slightly longer CH2SCH2 and (CH2)(2)-SCH2 groups gave IC50 values of 4.4 +/- 1.1 and 5.0 +/- 0.56 nM and thus were somewhat less potent than the parent molecule. However the analogues in which the aromatic COOH group was at the meta and para positions of the phthaloyl ring had IC50 values of 7.5 +/- 0.47 and 55 +/- 0.07 nM, confirming the low potency we had previously observed with these compounds against other cell lines. Overall, the results in this study support the conclusion that, while the position of the phthaloyl COOH group and the length of the amino acid side chain in 2 are important determinants of cytotoxic potency, changes in the pABA region and 9,10-bridge are well-tolerated and can even increase potency.

  DOI：

  10.1021/jm990630f
• 作为产物：
  描述：

  4-甲酸甲酯苯乙酸甲酯 在 aluminum oxide 、 18-冠醚-6 、 N,N-二甲基乙酰胺 、 1-金刚烷甲酸 、 copper (I) acetate 、 sodium hydride 作用下， 以 1,4-二氧六环 、 N,N-二甲基甲酰胺 、 mineral oil 为溶剂， 反应 44.58h， 生成 dimethyl α-ethylhomoterephthalate
  参考文献：
  名称：

  通过 Cu 催化的氧化还原中性脱酰作用进行位点特异性和程度可控的烷基氘化

  摘要：

  氘代有机化合物在许多领域变得越来越重要；然而，通过控制氘化程度将氘选择性地安装到未激活的脂肪族位置仍然具有挑战性。在这里，我们报告了铜催化的不同烷基的度控制脱酰氘化，甲基酮（乙酰基）部分作为无痕活化基团。的使用-methylpicolino-hydrazonamide (MPHA) 促进有效的芳构化驱动的 C-C 裂解。可以选择性地实现特定站点的单、双和三氘化。该反应是氧化还原中性的，具有广泛的官能团耐受性。该方法的实用性已在形成一套完整的氘代乙基、与 Diels-Alder 反应合并、净脱乙烯基氘化以及合成 d 2 -Austedo 类似物方面得到证明。

  DOI：

  10.1021/jacs.2c04382

文献信息

• Synthesis and antifolate properties of 10-alkyl-8,10-dideazaminopterins
  作者：J. I. DeGraw、P. H. Christie、E. G. Brown、L. F. Kelly、R. L. Kisliuk、Y. Gaumont、F. M. Sirotnak

  DOI：10.1021/jm00369a024

  日期：1984.3

  The synthesis of 10-alkyl analogues of the potent antitumor agent 8,10-dideazaminopterin is described. Alkylation of appropriate alpha-alkyl homoterephthalate esters with 2,4-diamino-6-(bromomethyl)-8-deazapteridine afforded 10-alkyl-10-carboxy-4-amino-4-deoxy-8,10-dideazapteroic acid diesters. Ester cleavage and decarboxylation at C-10 were accomplished by heating with sodium cyanide in Me2SO at 170-180 degrees C to afford the 2,4-diamino-10-alkyl-8,10-dideazapteroic acids. The acids were coupled with diethyl glutamate, followed by saponification, to give the 10-alkyl-8,10-dideazaminopterins. The compounds were potent inhibitors of growth in folate-dependent bacteria, Streptococcus faecium and Lactobacillus casei. The 10-methyl and 10-ethyl analogues gave the highest percent increases in life span for mice infected with L1210 leukemia with ILS values of +203 and +235%, respectively.
• Analogues of the Potent Nonpolyglutamatable Antifolate <i>N</i>^α-(4-Amino-4-deoxypteroyl)-<i>N</i>^δ-hemiphthaloyl-<scp>l</scp>-ornithine (PT523) with Modifications in the Side Chain, <i>p</i>-Aminobenzoyl Moiety, or 9,10-Bridge:  Synthesis and in Vitro Antitumor Activity
  作者：Andre Rosowsky、Joel E. Wright、Chitra M. Vaidya、Ronald A. Forsch、Henry Bader

  DOI：10.1021/jm990630f

  日期：2000.4.1

  Seven N-alpha-(4-amino-4-deoxypteroyl)-N-sigma-hemiphtha (2, PT523) analogues were synthesized by modifications of the literature synthesis of the corresponding AMT (1) analogues and were tested as inhibitors of tumor cell growth. in growth assays against cultured CCRF-CEM human leukemic cells exposed to drug for 72 h, the IC50 values of analogues in which N-10 was replaced by CH2 and CHMe were found to be 0.55 +/- 0.07 and 0.63 +/- 0.08 nM, and thus these analogues are more potent than 1 (IC50 = 4.4 +/- 1.0 nM) or 2 (IC50 = 1.5 +/-: 0.39 nM). The 10-ethyl-10-deaza analogue of 2 (IC50 = 1.2 +/- 0.25 nM) was not statistically different from 2 but was more potent than edatrexate, the 10-ethyl-10-deaza analogue of 1, which had an IC50 of 3.3 +/- 0.36 nM. In contrast, the analogue of 2 with both an ethyl and a CO2Me group at the 10-position had an IC50 of 54 +/- 4.9 nM, showing this modification to be unfavorable. The 4-amino-1-naphthoic acid analogue of 2 had an IC50 Of 1.2 +/- 0.22 nM, indicating that replacement of the p-aminobenzoic acid (pABA) moiety does not diminish cytotoxicity. The analogues in which the (CH2)(3) Side chain was replaced by slightly longer CH2SCH2 and (CH2)(2)-SCH2 groups gave IC50 values of 4.4 +/- 1.1 and 5.0 +/- 0.56 nM and thus were somewhat less potent than the parent molecule. However the analogues in which the aromatic COOH group was at the meta and para positions of the phthaloyl ring had IC50 values of 7.5 +/- 0.47 and 55 +/- 0.07 nM, confirming the low potency we had previously observed with these compounds against other cell lines. Overall, the results in this study support the conclusion that, while the position of the phthaloyl COOH group and the length of the amino acid side chain in 2 are important determinants of cytotoxic potency, changes in the pABA region and 9,10-bridge are well-tolerated and can even increase potency.
• Site-Specific and Degree-Controlled Alkyl Deuteration via Cu-Catalyzed Redox-Neutral Deacylation
  作者：Xukai Zhou、Tingting Yu、Guangbin Dong

  DOI：10.1021/jacs.2c04382

  日期：2022.6.8

  Deuterated organic compounds have become increasingly important in many areas; however, it remains challenging to install deuterium site-selectively to unactivated aliphatic positions with control of the degree of deuteration. Here, we report a Cu-catalyzed degree-controlled deacylative deuteration of diverse alkyl groups with the methylketone (acetyl) moiety as a traceless activating group. The use

  氘代有机化合物在许多领域变得越来越重要；然而，通过控制氘化程度将氘选择性地安装到未激活的脂肪族位置仍然具有挑战性。在这里，我们报告了铜催化的不同烷基的度控制脱酰氘化，甲基酮（乙酰基）部分作为无痕活化基团。的使用-methylpicolino-hydrazonamide (MPHA) 促进有效的芳构化驱动的 C-C 裂解。可以选择性地实现特定站点的单、双和三氘化。该反应是氧化还原中性的，具有广泛的官能团耐受性。该方法的实用性已在形成一套完整的氘代乙基、与 Diels-Alder 反应合并、净脱乙烯基氘化以及合成 d 2 -Austedo 类似物方面得到证明。