3-methoxy-4,5-dimethylthiophene-2-carboxylic acid | 83261-27-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 噻吩类
• 英文名称: 3-methoxy-4,5-dimethylthiophene-2-carboxylic acid
• 英文别名: 3-methoxy-4,5-dimethyl-2-thiophenecarboxylic acid
• CAS: 83261-27-2
• 化学式: C₈H₁₀O₃S
• 分子量: 186.232
• InChiKey: WSHWKCQZDNZGFV-UHFFFAOYSA-N

物化性质

• 熔点：
  139-140 °C
• 沸点：
  315.5±37.0 °C(Predicted)
• 密度：
  1.258±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  74.8
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  3-methoxy-4,5-dimethylthiophene-2-carboxylic acid 以94%的产率得到4-Methoxy-2,3-dimethylthiophene
  参考文献：
  名称：

  A New Route for the Synthesis of 3-Methoxythiophenes

  摘要：

  A new synthesis of 4-substituted, 5-substituted and 4,5-disubstituted 3-methoxythiophenes is reported. The reaction takes place in three steps in nealy quantitative yields starting from methyl 3-hydroxythiophene-2-carboxylates.

  DOI：

  10.3987/com-96-7512
• 作为产物：
  描述：

  3-羟基-4,5-二甲基噻吩-2-羧酸甲酯 在 sodium hydroxide 、 potassium carbonate 作用下， 以 丙酮 为溶剂， 反应 12.5h， 生成 3-methoxy-4,5-dimethylthiophene-2-carboxylic acid
  参考文献：
  名称：

  A New Route for the Synthesis of 3-Methoxythiophenes

  摘要：

  A new synthesis of 4-substituted, 5-substituted and 4,5-disubstituted 3-methoxythiophenes is reported. The reaction takes place in three steps in nealy quantitative yields starting from methyl 3-hydroxythiophene-2-carboxylates.

  DOI：

  10.3987/com-96-7512

文献信息

• N-1H-tetrazol-5-yl-2-thiophene carboxamides,
  申请人：Warner-Lambert Company

  公开号：US04748183A1

  公开（公告）日：1988-05-31

  The present invention is for compounds having the formula of N-1H-tetrazol-5-yl-2-thiophenecarboxamides, N-1H-tetrazol-5-yl-2-pyrrolecarboxamides, N-1H-tetrazol-5-yl-2-furancarboxamides or analogs of each of the carboxamides. The compounds are useful for the treatment of allergic or inflammatory conditions or diseases. Thus, pharmaceutical compositions and methods of use are also the invention. Processes of preparation for the compounds are also the invention.

  本发明涉及具有N-1H-四唑-5-基-2-噻吩羧酰胺、N-1H-四唑-5-基-2-吡咯羧酰胺、N-1H-四唑-5-基-2-呋喃羧酰胺或每种羧酰胺的类似物的化合物。这些化合物可用于治疗过敏或炎症性疾病。因此，药物组合物和使用方法也属于本发明。制备这些化合物的方法也是本发明的一部分。
• Organic compounds and their use as pharmaceuticals
  申请人：Lilly Industries Limited

  公开号：US04904686A1

  公开（公告）日：1990-02-27

  Compounds of the following formula have pharmacutical properties: ##STR1## in which R.sup.1 and R.sup.2 independently are hydrogen, halo, nitro, amino, C.sub.2-5 acylamino, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, C.sub.1-4 alkylthio, C.sub.1-4 alkylsulphonyl, N-substituted heterocyclyl, optionally substituted phenyl, optionally substituted phenylthio, optionally substituted phenylsulphonyl or optionally substituted phenylsulphonamido, or R.sup.1 and R.sup.2 together form a C.sub.3-5 alkylene bridge, R.sup.3 is C.sub.1-4 alkyl or C.sub.2-4 alkenyl, and X is (i) --(CH.sub.2).sub.n N(R.sup.4).sub.2 where each R.sup.4 independently is C.sub.1-4 alkyl, C.sub.2-4 alkenyl or optionally substituted C.sub.6 H.sub.5 CH.sub.2 --, and n is 1, 2 or 3, or (ii) a 5- to 8-membered alicyclic group containing one or two nitrogen atoms and directly attached to the amido nitrogen or attached by a C.sub.1-3 alkylene chain; and salts thereof.

  以下公式化合物具有药理学性质：##STR1## 其中R.sup.1和R.sup.2独立地是氢、卤素、硝基、氨基、C.sub.2-5酰胺基、C.sub.1-4烷基、C.sub.1-4烷氧基、C.sub.1-4烷基硫基、C.sub.1-4烷基磺酰基、N-取代杂环烷基、可选择取代苯基、可选择取代苯硫基、可选择取代苯磺酰基或可选择取代苯磺酰胺基，或者R.sup.1和R.sup.2一起形成C.sub.3-5烷基桥，R.sup.3是C.sub.1-4烷基或C.sub.2-4烯基，X是(i) --(CH.sub.2).sub.nN(R.sup.4).sub.2，其中每个R.sup.4独立地是C.sub.1-4烷基、C.sub.2-4烯基或可选择取代的C.sub.6 H.sub.5 CH.sub.2--，n为1、2或3，或(ii) 一个含有一个或两个氮原子的5至8元环脂肪族基团，直接连接到酰胺氮原子或通过C.sub.1-3烷基链连接；及其盐。
• Process for the preparation of n-1H-tetrazol-5-yl-2-pyrrole carboxamides
  申请人：Warner-Lambert Company

  公开号：US04824958A1

  公开（公告）日：1989-04-25

  The present invention is for compounds having the formula of N-1H-tetrazol-5-yl-2-thiophenecarboxamides, N-1H-tetrazol-5-yl-2-pyrrolecarboxamides, N-1H-tetrazol-5-yl-2-furancarboxamides or analogs of each of the carboxamides. The compounds are useful for the treatment of allergic or inflammatory conditions or diseases. Thus, pharmaceutical compositions and methods of use are also the invention. Processes of preparation for the compounds are also the invention.

  本发明涉及具有以下化学式的化合物：N-1H-四唑-5-基-2-噻吩羧酰胺，N-1H-四唑-5-基-2-吡咯羧酰胺，N-1H-四唑-5-基-2-呋喃羧酰胺或上述每种羧酰胺的类似物。这些化合物可用于治疗过敏或炎症性状或疾病。因此，本发明还涉及药物组合物和使用方法。本发明还涉及上述化合物的制备方法。
• Thiophene-2-carboxamide derivatives and their pharmaceutical use
  申请人：LILLY S.A.

  公开号：EP0297697A1

  公开（公告）日：1989-01-04

  Compounds of the following formula have pharmaceutical properties: in which R¹ and R² independently are hydrogen, halo, nitro, amino, C₂₋₅ acylamino, C₁₋₄ alkyl, C₁₋₄ alkoxy, C₁₋₄ alkylthio, C₁₋₄ alkylsulphonyl, N-substituted heterocyclyl, optionally substituted phenyl, optionally substituted phenylthio, optionally substituted phenylsulphonyl or optionally substituted phenylsulphonamido, or R¹ and R² together form a C₃₋₅ alkylene bridge, R³ is C₁₋₄ alkyl or C₂₋₄ alkenyl, and X is (i) -(CH₂)nN(R⁴)₂ where each R⁴ independently is C₁₋₄ alkyl, C₂₋₄ alkenyl or optionally substituted C₆H₅CH₂-, and n is 1, 2 or 3, or (ii) a 5- to 8-membered alicyclic group containing one or two nitrogen atoms and directly attached to the amido nitrogen or attached by a C₁₋₃ alkylene chain; and salts thereof.

  下式化合物具有药物特性： 其中 R¹ 和 R² 独立地为氢、卤素、硝基、氨基、C₂₋₅酰氨基、C₁₋₄ 烷基、C₁₋₄ 烷氧基、C₁₋₄ 烷硫基、C₁₋₄ 烷磺酰基、N-取代杂环基、任选取代的苯基、任选取代的苯硫基、任选取代的苯磺酰基或任选取代的苯磺酰胺基，或 R¹ 和 R² 共同形成 C₃₋₅ 亚烷基桥、R³ 是 C₁₋₄ 烷基或 C₂₋₄ 烯基，且 X 是 (i) -(CH₂)nN(R⁴)₂ 其中每个 R⁴ 独立地是 C₁₋₄ 烷基、C₂₋₄ 烯基或任选取代的 C₆H₅CH₂-、且 n 为 1、2 或 3，或 (ii) 包含一个或两个氮原子并直接连接至氨基氮或通过 C₁₋₃ 亚烷基链连接的 5 至 8 元脂环基团；及其盐类。
• Thiopene-2 carboxamide derivatives and their pharmaceutical use
  申请人：LILLY S.A.

  公开号：EP0368464A1

  公开（公告）日：1990-05-16

  A pharmaceutical compound of the formula in which R¹ is -CHO, -CH₂OH, -CH₂OC₁₋₄ alkyl, -COC₁₋₃ alkyl, -CH(OH)C₁₋₃ alkyl or -COOH, R² is C₁₋₄ alkyl, -CHO, -CH₂OH, -CH₂OC₁₋₄ alkyl, -COC₁₋₃ alkyl, -CH(OH)C₁₋₃ alkyl or -COOH, R³ is C₁₋₄ alkyl and X is pyrrolidinyl or pyrrolidinylmethyl; and salts and esters thereof.

  一种药物化合物，其式如下 其中 R¹ 是 -CHO、-CH₂OH、-CH₂OC₁₋₄烷基、-COC₁₋₃ 烷基、-CH(OH)C₁₋₃ 烷基或 -COOH，R² 是 C₁₋₄烷基、-CHO、-CH₂OH、-C₂₋₄烷基、-COC₁₋₃烷基、-CH(OH)C₁₋₃烷基或-COOH，R³是C₁₋₄烷基，X是吡咯烷基或吡咯烷基甲基；及其盐类和酯类。