2-(methylthio)ethyl acetoacetate | 90252-74-7

• 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: 2-(methylthio)ethyl acetoacetate
• 英文别名: 2-(methylthio)ethyl-acetylacetate；2-(Methylsulfanyl)ethyl 3-oxobutanoate；2-methylsulfanylethyl 3-oxobutanoate
• CAS: 90252-74-7
• 化学式: C₇H₁₂O₃S
• 分子量: 176.236
• InChiKey: QBPZHVNVHHNUCO-UHFFFAOYSA-N

物化性质

• 沸点：
  263.4±20.0 °C(Predicted)
• 密度：
  1?+-.0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.5
• 重原子数：
  11
• 可旋转键数：
  6
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  68.7
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  2-(methylthio)ethyl acetoacetate 在 sodium tetrahydroborate 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 四氢呋喃 、 苯 为溶剂， 反应 4.0h， 生成 2-methylsulfanylethyl (2R)-2-[(1R)-1-hydroxyethyl]pent-4-enoate
  参考文献：
  名称：

  微生物减少中的立体化学控制。9. 用面包酵母对 2-Alkyl-3-oxobutanoate 进行非对映选择性还原

  摘要：

  面包师的酵母将 2-烷基-3-氧代丁酸（CH3COCHRCO2R'；R=甲基、乙基、丙基、炔丙基和烯丙基）的酯还原为相应的（S）-羟基酯，具有独特的立体选择性，而在 2羟基酯的-位是S(反)或R(syn)，这取决于酯的碳烷氧基部分中烷氧基的结构。通常，关于 2 位的立体选择性并不令人满意。一般来说，叔丁酯的还原在产物中占主导地位，而 1,1-二甲基丙酯的还原则发挥顺式优势。从酯的合理构象的角度讨论了这两种酯在非对映选择性方面的显着差异。

  DOI：

  10.1246/bcsj.62.1179
• 作为产物：
  描述：

  2-甲硫基乙醇 、 2,2,6-三甲基-4H-1,3-二英-4-酮 以 xylene 为溶剂， 反应 1.0h， 以89%的产率得到2-(methylthio)ethyl acetoacetate
  参考文献：
  名称：

  4-Alkyl-1,4-dihydropyridine derivatives as specific PAF-acether antagonists

  摘要：

  A new series of 4-alkyl-1,4-dihydropyridines (1,4-DHP) were synthesized and evaluated for their ability to inhibit washed rabbit platelet aggregation induced by PAF-acether (1-O-hexadecyl/octadecyl-2-O-acetyl-sn-glycero-3-phosphorylcholine) and to reverse PAF-induced hypotension in anesthetized rats. Additionally, compounds were evaluated for their ability to inhibit the binding of radiolabeled PAF to its receptor on rabbit platelets. Among these compounds, 6I and 6L were the most potent and specific antagonists. At concentrations up to 100 microM, neither compound 6I nor compound 6L caused platelet aggregation nor did they inhibit platelet aggregation induced by collagen or adenosine diphosphate. Compound 6L did not show in vitro calcium channel blocker activity measured on vascular smooth muscle preparations of rabbit aorta and on [3H]nitrendipine binding assays. The compound did not show any cardiovascular effects in anesthetized rat at iv doses up to 1000 micrograms/kg, and the Ki value was 568.62 nmol. These results indicate that compound 6L is a potent and specific PAF antagonist with 1,4-dihydropyridine structure but devoid of a significant cardiovascular activity related to calcium-antagonist properties.

  DOI：

  10.1021/jm00174a017

文献信息

• 4-alkyl-1,4-dihydropyridines with PAF-antagonist activity
  申请人：Alter, S.A.

  公开号：US05177211A1

  公开（公告）日：1993-01-05

  4-alkyl-1,4-dihyropyridines, with PAF-antagonist activity, of formula (I) wherein R is saturated C.sub.1 -C.sub.4, R' is saturated C.sub.1 -C.sub.6 alkyl which may be interrupted by an oxygen atom, or 2-tetrahydrofurfuryl and R.sup.2 is saturated C.sub.1 -C.sub.4 or phenyl, the compound wherein R is methyl, R' is ethyl and R.sup.2 is phenyl remain excluded, are described. The compounds (I) are prepared by: (a) reaction of (II) with (III); (b) reaction of (IV) with (V); (c) reaction of (VI) with (III) and with (VII); (d) reaction of (VIII) with (V) and with (VII); or (e) reaction of (VIII) with (VI) and with (VII) in the presence of ammonia. The compounds (I) are useful due to their antagonist activity of the platelet activating factor. ##STR1##

  4-烷基-1,4-二氢吡啶，具有PAF拮抗活性，其化学式为（I），其中R为饱和的C.sub.1-C.sub.4，R'为饱和的C.sub.1-C.sub.6烷基，可以被氧原子中断，或2-四氢呋喃基，R.sup.2为饱和的C.sub.1-C.sub.4或苯基，其中化合物中R为甲基，R'为乙基，R.sup.2为苯基除外。化合物（I）通过以下方法制备：（a）将（II）与（III）反应；（b）将（IV）与（V）反应；（c）将（VI）与（III）和（VII）反应；（d）将（VIII）与（V）和（VII）反应；或（e）将（VIII）与（VI）和（VII）在氨的存在下反应。由于其拮抗血小板活化因子的活性，化合物（I）具有实用价值。
• Studies on dihydropyridines. II. Synthesis of 4,7-dihydropyrazolo(3,4-b)pyridines with vasodilating and antihypertensive activities.
  作者：IKUO ADACHI、TERUO YAMAMORI、YOSHIHARU HIRAMATSU、KATSUNORI SAKAI、HATSUO SATO、MASARU KAWAKAMI、OSAMU UNO、MOTOHIKO UEDA

  DOI：10.1248/cpb.35.3235

  日期：——

  A series of 4-aryl-4, 7-dihydropyrazolo [3, 4-b] pyridine-5-carboxylate derivatives (72-149) was prepared and the compounds were tested for Ca-blocking activity in isolated guinea pig portal vein, antihypertensive activity in spontaneously hypertensive rats, and coronary vasodilating effect in isolated guinea pig heart. A number of derivatives had potent antihypertensive and coronary vasodilating activities. The structure-activity relationships of the series indicated that a 3-cyclopentyl or 3-cyclohexyl substituent and a hydrophobic 5-ester moiety with moderate bulkiness were effective for increasing the pharmacological potencies.

  合成了一系列4-芳基-4, 7-二氢吡唑[3, 4-b]吡啶-5-羧酸酯衍生物（72-149），并对这些化合物进行了在分离的豚鼠门静脉中的钙通道阻滞活性、自发性高血压大鼠中的抗高血压活性以及在分离的豚鼠心脏中的冠状血管扩张作用的测试。多种衍生物具有强效的抗高血压和冠状血管扩张活性。该系列的结构-活性关系表明，3-环戊基或3-环己基取代基以及具有适度体积的疏水性5-酯基团对于提高药理活性是有效的。
• Mild and Facile Cleavage of 2-Cyanoethyl Ester Using Sodium Sulfide or Tetrabutylammonium Fluoride. Synthesis of 1,4-Dihydropyridine Monocarboxylic Acids and Unsymmetrical 1,4-Dihydropyridine Dicarboxylates.
  作者：Toshihisa OGAWA、Katsuo HATAYAMA、Hiroshi MAEDA、Yasuyuki KITA

  DOI：10.1248/cpb.42.1579

  日期：——

  Several 3-(2-cyanoethyl)-1, 4-dihydropyridine carboxylates (16) were prepared in moderate to good yields by means of the Hantzsch reaction. Treatment of these carboxylates with a weak base such as sodium sulfide or tetrabutylammonium fluoride at room temperature afforded smoothly the corresponding 1, 4-dihydropyridine monocarboxylic acids (18) in good yields. The monocarboxylic acids 18n and 18o were esterified with 2-nitrooxypropanol or N-(2-hydroxyethyl)nicotinamide p-toluenesulfonic acid salt to afford the selective coronary vasodilators CD-349 (5) and CD-832 (6), respectively.

  通过 Hantzsch 反应，制备出了几种 3-(2-氰乙基)-1,4-二氢吡啶羧酸盐 (16)，收率从中等到良好。在室温下用弱碱（如硫化钠或四丁基氟化铵）处理这些羧酸盐，可以顺利地得到相应的 1，4-二氢吡啶单羧酸（18），收率良好。单羧酸 18n 和 18o 与 2-硝基氧丙醇或 N-（2-羟乙基）烟酰胺对甲苯磺酸盐进行酯化，分别得到选择性冠状血管扩张剂 CD-349 (5) 和 CD-832 (6)。
• Kaptein, Bernard; Kellogg, Richard M.; Bolhuis, F. van, Recueil des Travaux Chimiques des Pays-Bas, 1990, vol. 109, # 6, p. 388 - 395
  作者：Kaptein, Bernard、Kellogg, Richard M.、Bolhuis, F. van

  DOI：——

  日期：——
• NAKAMURA, KAORU;MIYAI, TAKEHIKO;NAGAR, ASHISH;OKA, SHINZABURO;OHNO, ATSUY+, BULL. CHEM. SOC. JAP., 62,(1989) N, C. 1179-1187
  作者：NAKAMURA, KAORU、MIYAI, TAKEHIKO、NAGAR, ASHISH、OKA, SHINZABURO、OHNO, ATSUY+

  DOI：——

  日期：——