3,4-二甲氧基-2-硝基苯甲酸 | 79025-28-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: 3,4-二甲氧基-2-硝基苯甲酸
• 英文名称: 3,4-Dimethoxy-2-nitro-benzoic acid
• 英文别名: 3,4-Dimethoxy-2-nitrobenzoic acid
• CAS: 79025-28-8
• 化学式: C₉H₉NO₆
• 分子量: 227.174
• InChiKey: QZYYEGRMWJAHBY-UHFFFAOYSA-N

物化性质

• 熔点：
  200-202℃
• 沸点：
  399.5±42.0 °C(Predicted)
• 密度：
  1.403

计算性质

• 辛醇/水分配系数(LogP)：
  1.2
• 重原子数：
  16
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.22
• 拓扑面积：
  102
• 氢给体数：
  1
• 氢受体数：
  6

安全信息

• 海关编码：
  2918990090
• 危险性防范说明：
  P280,P305+P351+P338
• 危险性描述：
  H302
• 储存条件：
  存储条件：2-8°C，干燥密封。

反应信息

• 作为反应物：
  描述：

  3,4-二甲氧基-2-硝基苯甲酸 在 镍 、 乙酸乙酯 作用下， 生成 2-amino-3,4-dimethoxy-benzoic acid methyl ester
  参考文献：
  名称：

  TOMITA; KUGO, Pharmaceutical bulletin, 1954, vol. 2, # 2, p. 115 - 118

  摘要：

  DOI：
• 作为产物：
  描述：

  3,4-二甲氧基硝基苯甲酸甲酯 生成 3,4-二甲氧基-2-硝基苯甲酸
  参考文献：
  名称：

  A new exhalite type—siderite-sericite chert formed in fault-controlled lacustrine basin

  摘要：

  On the basis of geological, fabric, lithographical and mineralogical study, a new exhalite type, called 'siderite-sericite chert' according to its mineral assemblage, was reported for the first time. It was formed in a fault-controlled lacustrine basin and closely associated with sulfide ore characteristic of complex metal assemblage of Sn-Ag-Cu-Pb-Zn. Its geological setting, mineral assemblage, as well as associated ores are quite unique, and therefore worthy of detailed research. In the Dajing deposit, Linxi County, Inner Mongolia, it is this very exhalite that is regarded as a kind of acidic subvolcanic dike till now, and because of this, a genetic model of hydrothermal epigenetic filling by subvolcanic fluid prevails over the Dajing deposit. It is demonstrated again that any geochemical study might be senseless without support of detailed geological and lithographical investigations. This is of particular importance at the present time when one is readily confused by various modern techniques.

  DOI：

  10.1007/bf02906864

文献信息

• 3-羟基-4-甲氧基-2-硝基苯甲酸的制备方法
  申请人：上海再启生物技术有限公司

  公开号：CN111302945B

  公开（公告）日：2023-06-13

  本发明公开了3‑羟基‑4‑甲氧基‑2‑硝基苯甲酸的制备方法，属于医药中间体合成领域。从3‑烷氧基‑4‑乙酰氧基苯甲醛(1)出发，经过硝化反应得到中间体(2)；中间体(2)随后脱去乙酰基得到中间体(3)，接着甲基化得到中间体(4)，中间体(4)然后氧化得到中间体(5)；中间体(5)脱保护，然后重结晶除去异构体后得到3‑羟基‑4‑甲氧基‑2‑硝基苯甲酸(6)。该方法操作简便稳定、各步产物容易分离、收率高、环境友好、生产成本低，适合工业化规模生产。
• Alkoxy-substituted-6-chloro-quinazoline-2,4-diones
  申请人：Pfizer Inc.

  公开号：US04287341A1

  公开（公告）日：1981-09-01

  2,4-Diaminoquinazolines of the formula ##STR1## wherein Y.sup.1 is hydrogen or chloro, Y.sup.2 is OR, Y.sup.3 is hydrogen or OR such that when Y.sup.1 is hydrogen, Y.sup.3 is OR and when Y.sup.1 is chloro, Y.sup.3 is hydrogen or OR, and the pharmaceutically acceptable salts thereof; R represents an alkyl group having from one to three carbon atoms; taken separately, R.sup.1 and R.sup.2 are each hydrogen, alkyl having from one to five carbon atoms, cycloalkyl having from three to eight carbon atoms, alkenyl or alkynyl each having from three to five carbon atoms or hydroxy substituted alkyl having from two to five carbon atoms, when taken together with the nitrogen atom to which they are attached R.sup.1 and R.sup.2 form a substituted or unsubstituted heterocyclic group optionally containing an atom of oxygen, sulfur or a second atom of nitrogen as a ring member; their use as antihypertensive agents, pharmaceutical compositions containing them and intermediates for their production.

  2,4-二氨基喹唑啉的化学式为##STR1##，其中Y.sup.1为氢或氯，Y.sup.2为OR，Y.sup.3为氢或OR，当Y.sup.1为氢时，Y.sup.3为OR，当Y.sup.1为氯时，Y.sup.3为氢或OR，以及其药用盐；R代表一个具有一至三个碳原子的烷基基团；单独取R.sup.1和R.sup.2分别为氢、具有一至五个碳原子的烷基、具有三至八个碳原子的环烷基、具有三至五个碳原子的烯基或炔基，或具有两至五个碳原子的羟基取代的烷基，当与它们连接的氮原子一起时，R.sup.1和R.sup.2形成一个取代或未取代的杂环基团，该基团可选地含有一个氧原子、硫原子或第二个氮原子作为环成员；它们作为降压药剂的用途，含有它们的药物组合物以及它们生产的中间体。
• [EN] NOVEL BICYCLIC ANTIBIOTICS<br/>[FR] NOUVEAUX ANTIBIOTIQUES BICYCLIQUES
  申请人：BASILEA PHARMACEUTICA AG

  公开号：WO2010084152A1

  公开（公告）日：2010-07-29

  Compounds of formula (I) wherein X1, X3; X4 and X6, each independently of the others, represents a nitrogen atom or CR2, with the proviso that at least one of X1, X3; X4 and X6 represents a nitrogen atom; X2 represents C-H, C-(C1-C6alkyl), C-(C1-C6alkoxy), C-halogen, C-COOH; X5 represents C-H or C-(C1-C6alkyl), C-halogen; R1 and R2, independently of one another, represent hydrogen or a substituent selected from hydroxy, halogen, carboxy, amino, C1-C6alkylamino, di(C1-C6alkyl)amino, mercapto, cyano, nitro, C1-C6alkyl, C1-C6alkoxy, C1-C6alkylthio, C1-C6alkylamino- carbonyloxy, C2-C6alkenyl, C2-C6alkynyl, C1-C6alkylcarbonyloxy, C1-C6alkyl- sulfonyloxy, C1 -C6heteroalkylcarbonyloxy, C5-C6heterocyclylcarbonyloxy, C1-C6heteroalkyl, C1-C6heteroalkoxy, wherein heteroalkyl, heteroalkoxy groups or heterocyclyl comprise 1, 2 or 3 heteroatoms selected from nitrogen, oxygen and sulphur, in which substituents the alkyl moieties are unsubstituted or further substituted by halogeno, cyano, hydroxy, C1-C4alkoxy, C1-C4alkylcarbonyl, C1-C4alkoxycarbonyl, unsubstituted or substituted phenoxy or phenylcarbonyl, unsubstituted or substituted C5-C6heterocyclyl or carboxy; A1 represents a divalent group of one of the formulae -O-(CH2)m-(CH2)-, -S-(CH2)m-(CH2)- or -(C=O)O-(CH2)m-(CH2)-, wherein the (CH2)m moiety is optionally substituted by C1-C4alkyl, C2-C4alkenyl, C3-C6cycloalkyl, C3-C6cycloalkylmethyl, morpholinomethyl, halogen, carboxy, hydroxy, C1-C4alkoxy; C1 -C4alkoxyC1 -C4alkyl, C1 -C4alkoxy(C1 -C4alkylenoxy)C1 -C4alkyl, benzyloxyC1 - C4alkyl, amino, mono- or di-(C1-C4alkyl)amino or acylamino, in which substituents the alkyl moieties can be further substituted by 1 or more fluoro atoms m is 0, 1 or 2, provided that the number of atoms in the direct chain between the two terminal valencies of A1 is at least 3, which group A1 is linked to A2 via the terminal (CH2)-moiety; A2 is a group selected from C3-C8cycloalkylene; saturated and unsaturated 4 to 8- membered heterocyclodiyl with 1, 2 or 3 heteroatoms selected from nitrogen, oxygen and sulphur, which group A2 is unsubstituted or substituted; R4 represents hydrogen or C1 -C4alkyl; A3 represents C1-C4alkylene, C2-C4alkenylene, >C=O, -C(O)C1-C3alkylene-, -C(=O)NH-, or a group selected from -C2H4NH-, -C2H4O-, and -C2H4S- being linked to the adjacent NR4-group via the carbon atom; and G represents aryl or heteroaryl, which is unsubstituted or substituted and n is 0, 1 or 2; or a pharmaceutically acceptable salts, hydrates or solvates thereof are valuable antibacterial agents.

  式(I)中的化合物，其中X1、X3、X4和X6，每个独立地代表氮原子或CR2，但X1、X3、X4和X6中至少有一个代表氮原子；X2代表C-H、C-(C1-C6烷基)、C-(C1-C6烷氧基)、C-卤素、C-COOH；X5代表C-H或C-(C1-C6烷基)、C-卤素；R1和R2独立地代表氢或从羟基、卤素、羧基、氨基、C1-C6烷基氨基、二(C1-C6烷基)氨基、巯基、氰基、硝基、C1-C6烷基、C1-C6烷氧基、C1-C6烷硫基、C1-C6烷基氧基羰氧、C2-C6烯基、C2-C6炔基、C1-C6烷基羰氧、C1-C6烷基磺酰氧、C1-C6杂烷基羰氧、C5-C6杂环烷基羰氧、C1-C6杂烷基、C1-C6杂烷氧基中选择的取代基；A1代表以下式之一的二价基团：-O-(CH2)m-(CH2)-、-S-(CH2)m-(CH2)-或-(C=O)O-(CH2)m-(CH2)-，其中(CH2)m基团可选择地由C1-C4烷基、C2-C4烯基、C3-C6环烷基、C3-C6环烷基甲基、吗啉基甲基、卤素、羧基、羟基、C1-C4烷氧基；C1-C4烷氧基C1-C4烷基、C1-C4烷氧基(C1-C4烷氧基)C1-C4烷基、苄氧基C1-C4烷基、氨基、单或二-(C1-C4烷基)氨基或酰胺基取代，其中取代基的烷基基团可以进一步由1个或多个氟原子取代；m为0、1或2，前提是A1的两个末端价的直链中的原子数至少为3，该基团A1通过末端(CH2)-基团与A2连接；A2是选择自C3-C8环烷基烯；饱和和不饱和的含氮、氧和硫的1、2或3个杂原子的4至8环杂环二基团，该基团A2未取代或取代；R4代表氢或C1-C4烷基；A3代表C1-C4亚烷基、C2-C4烯亚烷基、>C=O、-C(O)C1-C3烷基-、-C(=O)NH-，或选择自-C2H4NH-、-C2H4O-和-C2H4S-的基团，通过碳原子与相邻的NR4基团连接；G代表芳香族或杂芳基，未取代或取代，n为0、1或2；或其药学上可接受的盐、水合物或溶剂合物是有价值的抗菌剂。
• Small-molecule phosphodiesterase probes: discovery of potent and selective CNS-penetrable quinazoline inhibitors of PDE1
  作者：John M. Humphrey、Eddie Yang、Christopher W. am Ende、Eric P. Arnold、Jenna L. Head、Stephen Jenkinson、Lorraine A. Lebel、Spiros Liras、Jayvardhan Pandit、Brian Samas、Felix Vajdos、Samuel P. Simons、Artem Evdokimov、Mahmoud Mansour、Frank S. Menniti

  DOI：10.1039/c4md00113c

  日期：——

  calcium-activated, dual substrate phosphodiesterases expressed in both the CNS and periphery that play a role in the integration of intracellular calcium and cyclic nucleotide signaling cascades. Exploration of the potential in targeting this family of enzymes to treat neuropsychiatric disorders has been hampered by a lack of potent, selective, and brain penetrable PDE1 inhibitors. To identify such compounds we used

  PDE1是在中枢神经系统和周围区域表达的钙激活双底物磷酸二酯酶家族，在细胞内钙和环状核苷酸信号级联反应的整合中发挥作用。由于缺乏有效，选择性和脑穿透性的PDE1抑制剂，阻碍了针对这种酶家族治疗神经精神疾病的潜力的探索。为了鉴定此类化合物，我们使用了高通量筛选，基于结构的设计和针对性的合成化学，以发现4-氨基喹唑啉7a（PF-04471141）和4-茚满基喹唑啉27（PF-04822163）每种都是易于穿越血脑屏障的PDE1抑制剂。这些基于喹唑啉的PDE1选择性抑制剂代表了有价值的新工具，可用于研究PDE1调节的生物学过程并开始确定此类化合物治疗神经精神疾病的潜在治疗作用。
• [EN] INHIBITORS OF PROTEIN TYROSINE PHOSPHATASES<br/>[FR] INHIBITEURS DE PROTÉINES TYROSINE PHOSPHATASES
  申请人：UNIV INDIANA RES & TECH CORP

  公开号：WO2014055768A1

  公开（公告）日：2014-04-10

  Novel protein tyrosine phosphatase (PTP) inhibitor compounds synthesized from phosphonodifluoromethyl phenylalanine (F2Pmp) are provided. Use of these compounds for inhibiting a PTP enzyme (such as PTP-MEG2), as well as treating a disease, disorder, or condition associated with inappropriate activity of a PTP (such as type 2 diabetes), is also provided.

  提供了从磷酸二氟甲基苯丙氨酸（F2Pmp）合成的新型蛋白酪氨酸磷酸酶（PTP）抑制剂化合物。还提供了使用这些化合物来抑制PTP酶（如PTP-MEG2），以及治疗与PTP不当活性相关的疾病、紊乱或病况（如2型糖尿病）的方法。