Methyl 2-(methoxymethylidene)-3-oxopentanoate | 125500-76-7

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 酮酸及其衍生物
• 英文名称: Methyl 2-(methoxymethylidene)-3-oxopentanoate
• CAS: 125500-76-7
• 化学式: C₈H₁₂O₄
• 分子量: 172.181
• InChiKey: AUNZMVTVNQSEAD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.7
• 重原子数：
  12
• 可旋转键数：
  5
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.5
• 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：

  Methyl 2-(methoxymethylidene)-3-oxopentanoate 以 二苯醚 为溶剂， 反应 1.17h， 生成 3-propanoyl-8-methoxy-4(1H)-quinolone
  参考文献：
  名称：

  Reversible inhibitors of the gastric (H+/K+)-ATPase. 3. 3-Substituted-4-(phenylamino)quinolines

  摘要：

  Previously, gastric (H+/K+)-ATPase inhibitors such as 2 have been prepared as analogues of 1a on the presumption that the 3-carbethoxy substituent plays a key role in establishing the orientation of the 4-arylamino group. In this paper we explore further the contribution made to activity by the quinoline 3-substituent. We show th bearing such a substituent, only a particular combination of properties provides high activity, both in as inhibitors of gastric acid secretion in vivo. The ability of the substituent to affect activity by restricting rotation about the C(quin)-N bond through a combination of both a pi-electron withdrawal and hydrogen bonding is supported by the current study. However, high activity is only achieved if the effect of this group on the quinoline pK(a) is kept to a minimum. 3-Acyl substituents provide an optimum combination of electronic properties. From this series, compound 17c (SK&F 96067) was shown to be a potent inhibitor of histamine-stimulated gastric acid secretion oral dosing in the Heidenhain pouch dog and was selected for further development and evaluation in man.

  DOI：

  10.1021/jm00096a018
• 作为产物：
  描述：

  3-氧代戊酸甲酯 、 原甲酸三甲酯 在 乙酸酐 作用下， 反应 2.0h， 生成 Methyl 2-(methoxymethylidene)-3-oxopentanoate
  参考文献：
  名称：

  Diversity-oriented synthesis of 1-hydroxy-2,4-benzodioates by regioselective [3+3] cyclocondensations of 1,3-bis(silyloxy)-1,3-butadienes with 3-alkoxy- and 3-silyloxy-2-alkoxycarbonyl-2-en-1-ones

  摘要：

  1-羟基-3,5-二甲基-2,4-苯二酸酯（4-羟基异苯甲酸酯）是通过1,3-二（硅氧基）-1,3-丁二烯与3-乙氧基carbonyl-4-三甲基硅氧基-3-戊烯-2-酮的[3+3]环缩合反应制备的，该3-乙氧基carbonyl-4-三甲基硅氧基-3-戊烯-2-酮是从（对称）乙基2-乙酰乙酸乙酯合成的。1,3-二（硅氧基）-1,3-丁二烯与3-烷氧基-2-烷氧基carbonyl-2-烯-1-酮的[3+3]环化反应，后者通过β-酮酯与三烷基甲酸醛的反应容易获得，提供了一种方便且区域选择性的途径，以合成多种不易通过其他方法获得的3-取代1-羟基-2,4-苯二酸酯。

  DOI：

  10.1039/b900542k

文献信息

• Compounds substituted quinoline derivatives
  申请人：SmithKline Beecham Intercredit B.V.

  公开号：US05432182A1

  公开（公告）日：1995-07-11

  Substituted 4-aminoquinazoline derivatives which are inhibitors of gastric acid secretion. A compound of the invention are the salts of strong acids of 3-butyryl-4-(2-methylphenylamino)-8-(hydroxymethyl)quinoline.

  该文段的中文翻译如下：替代4-氨基喹唑啉衍生物，是胃酸分泌的抑制剂。该发明的化合物是3-丁酰基-4-(2-甲基苯胺基)-8-(羟甲基)喹啉的强酸盐。
• Substituted 4-aminoquinoline derivatives as gastric acid secretion
  申请人：SmithKline Beckman Intercredit B.V.

  公开号：US05089504A1

  公开（公告）日：1992-02-18

  Substituted 4-aminoquinazoline derivatives of the formula: ##STR1## in which R.sup.1 is hydrogen, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, C.sub.1-6 alkoxyC.sub.1-6 alkyl, C.sub.3-6 cycloalkyl, C.sub.3-6 cycloalkylC.sub.1-6 alkyl, phenylC.sub.1-6 alkyl, the phenyl group being optionally substituted; R.sup.2 is hydrogen, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, amino, C.sub.1-6 alkylthio, halogen, cyano, hydroxy, carbamoyl, carboxy, C.sub.1-6 alkanoyl or trifluoromethyl; m is 1 to 3; p is 0 to 4; R.sup.3 is COR.sup.4 ; R.sup.4 is hydroxy, C.sub.1-6 alkoxy, or NR.sup.5 R.sup.6 ; R.sup.5 and R.sup.6 are each hydrogen or C.sub.1-6 alkyl or together with the nitrogen atom to which they are attached form a heterocyclic ring; and R.sup.7 is hydrogen, C.sub.1-6 alkoxy or C.sub.1-6 alkyl; or a salt thereof.

  公式为：##STR1##的4-氨基喹唑啉衍生物，其中R.sup.1是氢、C.sub.1-6烷基、C.sub.1-6烷氧基、C.sub.1-6烷氧基C.sub.1-6烷基、C.sub.3-6环烷基、C.sub.3-6环烷基C.sub.1-6烷基、苯基C.sub.1-6烷基，苯基可选地被取代；R.sup.2是氢、C.sub.1-6烷基、C.sub.1-6烷氧基、氨基、C.sub.1-6烷基硫基、卤素、氰基、羟基、氨甲酰基、羧基、C.sub.1-6烷酰基或三氟甲基；m为1至3；p为0至4；R.sup.3是COR.sup.4；R.sup.4是羟基、C.sub.1-6烷氧基或NR.sup.5R.sup.6；R.sup.5和R.sup.6分别是氢或C.sub.1-6烷基，或与它们连接的氮原子一起形成杂环环；R.sup.7是氢、C.sub.1-6烷氧基或C.sub.1-6烷基；或其盐。
• Diversity-oriented synthesis of 1-hydroxy-2,4-benzodioates by regioselective [3+3] cyclocondensations of 1,3-bis(silyloxy)-1,3-butadienes with 3-alkoxy- and 3-silyloxy-2-alkoxycarbonyl-2-en-1-ones
  作者：Mohanad Shkoor、Abdolmajid Riahi、Olumide Fatunsin、Ibrar Hussain、Mirza A. Yawer、Mathias Lubbe、Stefanie Reim、Helmut Reinke、Christine Fischer、Peter Langer

  DOI：10.1039/b900542k

  日期：——

  1-Hydroxy-3,5-dimethyl-2,4-benzodioates (4-hydroxyisophthalates) were prepared by [3+3] cyclocondensation of 1,3-bis(silyloxy)-1,3-butadienes with 3-ethoxycarbonyl-4-trimethylsilyloxy-3-penten-2-one which is synthesized from (symmetrical) ethyl 2-acetylacetoacetate. The [3+3] cyclization of 1,3-bis(silyloxy)-1,3-butadienes with 3-alkoxy-2-alkoxycarbonyl-2-en-1-ones, readily available by reaction of β-ketoesters with trialkyl orthoformiates, provide a convenient and regioselective approach to a great variety of 3-substituted 1-hydroxy-2,4-benzodioates that are not readily available by other methods.

  1-羟基-3,5-二甲基-2,4-苯二酸酯（4-羟基异苯甲酸酯）是通过1,3-二（硅氧基）-1,3-丁二烯与3-乙氧基carbonyl-4-三甲基硅氧基-3-戊烯-2-酮的[3+3]环缩合反应制备的，该3-乙氧基carbonyl-4-三甲基硅氧基-3-戊烯-2-酮是从（对称）乙基2-乙酰乙酸乙酯合成的。1,3-二（硅氧基）-1,3-丁二烯与3-烷氧基-2-烷氧基carbonyl-2-烯-1-酮的[3+3]环化反应，后者通过β-酮酯与三烷基甲酸醛的反应容易获得，提供了一种方便且区域选择性的途径，以合成多种不易通过其他方法获得的3-取代1-羟基-2,4-苯二酸酯。
• Reversible inhibitors of the gastric (H+/K+)-ATPase. 3. 3-Substituted-4-(phenylamino)quinolines
  作者：Robert J. Ife、Thomas H. Brown、David J. Keeling、Colin A. Leach、Malcolm L. Meeson、Michael E. Parsons、David R. Reavill、Colin J. Theobald、Kenneth J. Wiggall

  DOI：10.1021/jm00096a018

  日期：1992.9

  Previously, gastric (H+/K+)-ATPase inhibitors such as 2 have been prepared as analogues of 1a on the presumption that the 3-carbethoxy substituent plays a key role in establishing the orientation of the 4-arylamino group. In this paper we explore further the contribution made to activity by the quinoline 3-substituent. We show th bearing such a substituent, only a particular combination of properties provides high activity, both in as inhibitors of gastric acid secretion in vivo. The ability of the substituent to affect activity by restricting rotation about the C(quin)-N bond through a combination of both a pi-electron withdrawal and hydrogen bonding is supported by the current study. However, high activity is only achieved if the effect of this group on the quinoline pK(a) is kept to a minimum. 3-Acyl substituents provide an optimum combination of electronic properties. From this series, compound 17c (SK&F 96067) was shown to be a potent inhibitor of histamine-stimulated gastric acid secretion oral dosing in the Heidenhain pouch dog and was selected for further development and evaluation in man.