methyl 2,3,4-trimethoxybenzoate | 6395-18-2

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: methyl 2,3,4-trimethoxybenzoate
• 英文别名: 2,3,4-Trimethoxy-benzoesaeuremethylester；2,3,4-trimethoxybenzoic acid,methyl ester
• CAS: 6395-18-2
• 化学式: C₁₁H₁₄O₅
• mdl: MFCD01327106
• 分子量: 226.229
• InChiKey: WYUKTYILRUMKBX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  16
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.363
• 拓扑面积：
  54
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  methyl 2,3,4-trimethoxybenzoate 在 三氯化硼 、 potassium carbonate 、 N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 、 lithium hydroxide 、 lithium hexamethyldisilazane 作用下， 以 四氢呋喃 、 N-甲基吡咯烷酮 、 甲醇 、 二氯甲烷 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 52.5h， 生成 2-{6-[2-(3,5-dichloropyridin-4-yl)acetyl]-2,3-dimethoxyphenoxy}-N-propylacetamide
  参考文献：
  名称：

  Discovery and Early Clinical Development of 2-{6-[2-(3,5-Dichloro-4-pyridyl)acetyl]-2,3-dimethoxyphenoxy}-N-propylacetamide (LEO 29102), a Soft-Drug Inhibitor of Phosphodiesterase 4 for Topical Treatment of Atopic Dermatitis

  摘要：

  Development of orally available phosphodiesterase 4 (PDE4) inhibitors as anti-inflammatory drugs has been going on for decades. However, only roflumilast has received FDA approval. One key challenge has been the low therapeutic window observed in the dinic for PDE4 inhibitors, primarily due to PDE4 mediated side effects. Here we describe our approach to circumvent this issue by applying a soft-drug concept in the design of a topically acting PDE4 inhibitor for treatment of dermatological diseases. We used a fast follower approach, starting from piclamilast. In particular, simultaneous introduction of 2'-alkoxy substituents and changing an amide to a keto linker proved to be beneficial when designing potential soft-drug candidates. This effort culminated in identification of LEO 29102 (20), a potent, selective, and soft-drug PDE4 inhibitor with properties suitable for patient-friendly formulations giving efficient drug delivery to the skin. Compound 20 has reached phase 2 and demonstrated clinically relevant efficacy in the treatment of atopic dermatitis.

  DOI：

  10.1021/jm500378a
• 作为产物：
  描述：

  2,3,4-三甲氧基苯甲酰氯 在 甲醇 、 三乙胺 作用下， 以1.93 g的产率得到methyl 2,3,4-trimethoxybenzoate
  参考文献：
  名称：

  PDE4抑制剂K-34的工艺开发

  摘要：

  开发了一种简短实用的PDE4抑制剂K-34（1）合成方法。该合成分四个步骤完成，总收率达58％。利用邻近的羧酸助剂，以极高的收率创造出独特的螺缩醛。该合成还具有使用4-吡啶基甲基阴离子9和酯18进行高效酮构建的特点，其中应通过快速就地形成烯醇化物来防止过度反应。整个合成在温和的条件下进行，并使用适合大规模生产的简单程序。

  DOI：

  10.1021/op100291g

文献信息

• Derivatives of benzofuran or benzodioxole
  申请人：Kyowa Hakko Kogyo Co., Ltd.

  公开号：US06514996B2

  公开（公告）日：2003-02-04

  An oxygen-containing heterocyclic compound represented by following Formula (I): wherein R1 and R2 independently represent hydrogen, lower alkyl, cyano, —(CH2)n—E1—CO—G1 (wherein E1 represents a bond, O, or NH; and G1 represents hydrogen, substituted or unsubstituted lower alkyl, OR6, or NR7R8; and n represents an integer of 0 to 4), or the like; R1 and R2 are combined to represent a saturated carbon ring together with a carbon atom adjacent thereto; or R2, and R11 or R13 described below are combined to form a single bond; R3 represents hydrogen, phenyl, or halogen; R4 represents hydroxy, lower alkoxy, or the like; A represents —C(R9)(R10)— or O; B represents O, NR11, —C(R12)(R13)—, or —C(R14)(R15)—C(R16)(R17)—; D represents (i) —C(R18)(R19)—X— (wherein X represents —C(R21)(R22)—, S, or NR23), (ii) —C(R19a)═Y— [Y represents —C(R24)—Z— (wherein Z represents CONH, CONHCH2, or a bond), or N], or (iii) a bond; and R5 represents aryl, an aromatic heterocyclic group, cycloalkyl, pyridine-N-oxide, cyano, or lower alkoxycarbonyl; or pharmaceutically acceptable salts thereof.

  根据您的要求，以下是该化学公式（I）的中文翻译： 一个含氧杂环化合物，由以下公式（I）表示：其中R1和R2独立代表氢、低级烷基、氰基、—(CH2)n—E1—CO—G1（其中E1代表一个键、O或NH；G1代表氢、取代或未取代的低级烷基、OR6或NR7R8；n代表0到4的整数），或类似物；R1和R2共同代表与相邻碳原子一起的饱和碳环；或者R2与下面描述的R11或R13结合形成一个单键；R3代表氢、苯基或卤素；R4代表羟基、低级烷氧基或类似物；A代表—C(R9)(R10)—或O；B代表O、NR11、—C(R12)(R13)—或—C(R14)(R15)—C(R16)(R17)—；D代表（i）—C(R18)(R19)—X—（其中X代表—C(R21)(R22)—、S或NR23）、（ii）—C(R19a)═Y— [Y代表—C(R24)—Z—（其中Z代表CONH、CONHCH2或一个键）或N]，或（iii）一个键；R5代表芳基、芳香杂环基、环烷基、吡啶-N-氧化物、氰基或低级烷氧基甲酸；或其药物可接受的盐。
• Manganese(III)-Mediated Formylation of Aromatic Compounds in the Presence of Malonic Acid
  作者：Hiroshi Nishino、Katsunori Tsunoda、Kazu Kurosawa

  DOI：10.1246/bcsj.62.545

  日期：1989.2

  the presence of manganese(III) acetate gives naphthalenecarbaldehydes and naphthalenecarboxylic acids. Similar reactions of anthracene, pyrene, and methoxybenzenes also yield formylated and carboxylated products. It was found that the formyl group introduced to the aromatic ring was not derived from carboxymethyl radical generated directly by the thermolysis of manganese(III) acetate, but from a dicarboxymethyl

  在乙酸锰 (III) 存在下，萘与丙二酸反应生成萘甲醛和萘甲酸。蒽、芘和甲氧基苯的类似反应也产生甲酰化和羧化产物。发现引入芳环的甲酰基不是由乙酸锰（III）热解直接产生的羧甲基自由基衍生而来，而是由丙二酸和乙酸锰（III）相互作用形成的二羧甲基自由基衍生而来。此外，还发现二羧甲基自由基攻击芳环上电子密度最高的位置，当芳族化合物的电离电位低于7.8 eV时，这种甲酰化是有效的。
• Copper-Catalyzed Methyl Esterification Reactions via C–C Bond Cleavage
  作者：Yan Zhu、Hong Yan、Linhua Lu、Defu Liu、Guangwei Rong、Jincheng Mao

  DOI：10.1021/jo4016387

  日期：2013.10.4

  The highly effective synthesis of methyl esters from benzylic alcohols, aldehydes, or acids via copper-catalyzed C–C cleavage from tert-butyl hydroperoxide is reported in this paper for the first time. Our protocol is easily accessible and practical, making it a possible supplement for the traditional way.

  本文首次报道了通过铜催化的氢过氧化叔丁基的铜催化CC裂解，由苄醇，醛或酸高效合成甲酯。我们的协议易于访问且实用，使其成为传统方式的可能补充。
• Die Synthese von 2-Methyl-5-phenacyl-1,3,4-thiadiazolen / The Synthesis of 2-Methyl-5-phenacyl-1,3,4-thiadiazoles
  作者：Willi Kantlehner、Erwin Haug、Willy Kinzy、Oliver Scherr、Ivo C. Ivanov

  DOI：10.1515/znb-2004-0403

  日期：2004.4.1

  Keywords 2,5-Dimethyl-1,3,4-thiadiazole (1a) reacts which aromatic carboxylic acid esters 8a - u in the presence of excessive sodium hydride under condensation to give sodium enolates which afford on hydrolysis the phenacyl-1,3,4-thiadiazoles 9a - u. The action of aromatic carboxylic acid chlorides on 1a in the presence of triethylamine gives rise to the formation of mixtures of diacylated thiadiazole

  关键词 2,5-二甲基-1,3,4-噻二唑 (1a) 在过量氢化钠存在下缩合生成芳香族羧酸酯 8a - u，生成烯醇钠，水解生成苯甲酰基-1,3， 4-噻二唑 9a - u。在三乙胺存在下，芳族羧酸氯化物对 1a 的作用导致形成二酰化噻二唑衍生物 16 和 18 的混合物。在某些情况下，纯 3-酰基-苯亚基-2,3-二氢-1,3，可以分离4-噻二唑16。通常化合物16在高沸点溶剂中加热重排得到烯醇苯甲酸酯18。二酰化噻二唑16和18的水解产生苯甲酰噻二唑9a、c、d、g-j、v、w。
• DERIVATIVES OF BENZOFURAN OR BENZODIOXOLE
  申请人：——

  公开号：US20020128290A1

  公开（公告）日：2002-09-12

  An oxygen-containing heterocyclic compound represented by following Formula (I): 1 wherein R 1 and R 2 independently represent hydrogen, lower alkyl, cyano, —(CH 2 ) n —E 1 —CO—G 1 (wherein E 1 represents a bond, O, or NH; and G 1 represents hydrogen, substituted or unsubstituted lower alkyl, OR 6 , or NR 7 R 8 ; and n represents an integer of 0 to 4), or the like; R 1 and R 2 are combined to represent a saturated carbon ring together with a carbon atom adjacent thereto; or R 2 , and R 11 or R 13 described below are combined to form a single bond; R 3 represents hydrogen, phenyl, or halogen; R 4 represents hydroxy, lower alkoxy, or the like; A represents —C(R 9 )(R 10 )— or O; B represents O, NR 11 , —C(R 12 )(R 13 )—, or —C(R 14 )(R 15 )—C(R 16 )(R 17 )—; D represents (i) —C(R 18 )(R 19 )—X— (wherein X represents —C(R 21 )(R 22 )—, S, or NR 23 ), (ii) —C(R 19a )═Y— [Y represents —C(R 24 )—Z— (wherein Z represents CONH, CONHCH 2 , or a bond), or N], or (iii) a bond; and R 5 represents aryl, an aromatic heterocyclic group, cycloalkyl, pyridine-N-oxide, cyano, or lower alkoxycarbonyl; or pharmaceutically acceptable salts thereof.

  以下是由下式（I）表示的含氧杂环化合物： 其中R1和R2独立地表示氢、较低的烷基、氰基、—（CH2）n—E1—CO—G1（其中E1表示键、O或NH；G1表示氢、取代或未取代的较低烷基、OR6或NR7R8；n表示0到4的整数），或类似物；R1和R2结合表示与相邻碳原子一起形成饱和碳环；或R2，以及下文描述的R11或R13结合形成单键；R3表示氢、苯基或卤素；R4表示羟基、较低的烷氧基或类似物；A表示—C（R9）（R10）—或O；B表示O、NR11、—C（R12）（R13）—或—C（R14）（R15）—C（R16）（R17）—；D表示（i）—C（R18）（R19）—X—（其中X表示—C（R21）（R22）—、S或NR23）、（ii）—C（R19a）═Y—［Y表示—C（R24）—Z—（其中Z表示CONH、CONHCH2或键），或N］，或（iii）键；R5表示芳基、芳香杂环基、环烷基、吡啶-N-氧化物、氰基或较低烷氧羰基；或其药学上可接受的盐。