3-甲基-2-氧代环戊烷-1-羧酸乙酯 | 7424-85-3

• 物质功能分类: 医药中间体
• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: 3-甲基-2-氧代环戊烷-1-羧酸乙酯
• 英文名称: ethyl 3-methyl-2-oxocyclopentanecarboxylate
• 英文别名: 2-carboethoxy-5-methyl-cyclopentanone；ethyl 3-methyl-2-oxocyclopentane-1-carboxylate；2-ethoxycarbonyl-5-methylcyclopentanone；5-methyl-2-carbethoxycyclopentanone；3-methyl-2-oxo-cyclopentanecarboxylic acid ethyl ester；3-Methyl-2-oxo-cyclopentancarbonsaeure-aethylester
• CAS: 7424-85-3
• 化学式: C₉H₁₄O₃
• mdl: MFCD09035534
• 分子量: 170.208
• InChiKey: RYLWOWNENNPXNW-UHFFFAOYSA-N

物化性质

• 沸点：
  109 °C(Press: 12 Torr)
• 密度：
  1.068±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.5
• 重原子数：
  12
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.777
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  3-甲基-2-氧代环戊烷-1-羧酸乙酯 在 lithium aluminium tetrahydride 、 硫酸 作用下， 生成 2,5-dimethylcyclopentanol
  参考文献：
  名称：

  Stereochemistry of 1,2-Dimethyl-3-isopropylcyclopentane

  摘要：

  DOI：

  10.1021/jo01347a015
• 作为产物：
  描述：

  1-甲基-2-氧代环戊烷-1-羧酸乙酯 在 sodium ethanolate 作用下， 以 乙醇 为溶剂， 生成 3-甲基-2-氧代环戊烷-1-羧酸乙酯
  参考文献：
  名称：

  An Improved Procedure for the Preparation of 2-Alkyl-5-carbethoxycyclopentanone

  摘要：

  DOI：

  10.1021/jo01032a516

文献信息

• SYNTHÈSES D'ACIDES AMINÉS CYCLIQUES À PARTIR DE DÉRIVÉS DE L'ACIDE ADIPIQUE
  作者：Lise Nicole、Louis Berlinguet

  DOI：10.1139/v62-054

  日期：1962.2.1

  The Dieckmann reaction has been reinvestigated in view of obtaining alkyl-substituted cyclopentanones. Control of the reaction during alkylation now permits either the opening of the cyclopentane ring to give, without the isolation of intermediates, substituted adipic esters in excellent yields or normal substitution on the ring.Methyl- and allyl-substituted cyclopentanones were obtained from the corresponding Dieckmann esters or from the substituted adipic acids. These ketones were transformed by the Strecker method into their corresponding spirohydantoins. In both cases, two diastereo-isomers were isolated and studied.1-Amino-2-methyl-cyclopentanecarboxylic acid and 1-amino-2-allyl-cyclopentanecarboxylic acid were prepared in good yields from the spirohydantoins and characterized.

  Dieckmann反应已经重新研究，以获得烷基取代的环戊酮。现在在烷基化过程中对反应进行控制，可以使环戊烷环的开启，从而在不分离中间体的情况下，以极高的产率得到取代己二酸酯，或者在环上进行正常的取代反应。从相应的Dieckmann酯或取代己二酸中获得了甲基和烯丙基取代的环戊酮。这些酮经过Strecker方法转化为相应的螺环脲酮。在这两种情况下，都分离并研究了两个对映异构体。从螺环脲酮中以良好的产率制备并表征了1-氨基-2-甲基-环戊基甲酸和1-氨基-2-烯丙基-环戊基甲酸。
• Recoverable Cinchona ammonium salts as organocatalysts in the enantioselective Michael addition of β-keto esters
  作者：Silvia Tarí、Rafael Chinchilla、Carmen Nájera

  DOI：10.1016/j.tetasy.2010.11.016

  日期：2010.12

  Several dimeric Cinchona-alkaloid anthracenyldimethyl-derived ammonium salts, are used as organocatalysts in the enantioselective Michael addition reaction of cyclic β-keto esters to α,β-unsaturated carbonyl compounds, in the presence of diisopropylethylamine as a base (30 mol %), for the generation of enantiomerically enriched adducts bearing quaternary stereocenters. Quinine and quinidine-derived

  在二异丙基乙胺为碱（30摩尔％）的情况下，几种二聚Cinchona-生物碱蒽基二甲基蒽盐被用作环状β-酮酯与α，β-不饱和羰基化合物的对映选择性Michael加成反应中的有机催化剂。用于生成带有四级立体中心的对映体富集的加合物。奎宁和奎尼丁衍生的二聚铵盐（1-10 mol％）以较高的收率（最高98％）提供了相应的加合物（最高94％ee）的相反和更高的对映选择性。取代的2-烷氧基羰基-1-茚满酮用作亲核试剂的前体，以及2-氧代环戊烷甲酸乙酯和叔酸乙酯2,5-二氧杂-1-苯基吡咯烷-3-羧酸丁酯。这些有机催化剂可在反应结束时通过在乙醚中沉淀而回收，并在不损失任何活性的情况下重复使用。
• Pharmaceutical compositions containing alryl substituted cyclopenta
  申请人：Sharps Associates

  公开号：US03992550A1

  公开（公告）日：1976-11-16

  1,2,3,4-Tetrahydrocyclopenta[c] [1]benzopyrans of the formulae ##SPC1## Wherein R is a lower alkyl group having 1 to 5 carbons, R.sub.1 is hydrogen or a lower alkyl group having 1 to 5 carbons, R.sub.2 is a lower alkyl group and R.sub.3 is an alkyl group having 1 to 20 carbon atoms, a phenyl-lower alkyl group or a cycloalkyl-lower alkyl group. The compounds have anti-hypertensive, antidepressant, analgesic, anticonvulsant, anti-anxiety and tranquilizing activity in animals.

  1,2,3,4-四氢环戊[c][1]苯并吡喃的化学式为##SPC1##其中R是具有1至5个碳的较低烷基基团，R.sub.1是氢或具有1至5个碳的较低烷基基团，R.sub.2是较低烷基基团，R.sub.3是具有1至20个碳原子的烷基基团，苯基-较低烷基基团或环烷基-较低烷基基团。这些化合物在动物中具有抗高血压、抗抑郁、镇痛、抗抽搐、抗焦虑和镇静活性。
• Heterocyclic esters of benzopyrans
  申请人：Sharps Associates

  公开号：US03941782A1

  公开（公告）日：1976-03-02

  This invention relates to novel esters of benzopyrans represented by the formulae ##SPC1## Wherein R and R' are hydrogen or C.sub.1 -C.sub.6 alkyl and when alkyl are on the same or different carbons; R.sub.1 is C.sub.1 -C.sub.6 alkyl; R.sub.2 is C.sub.1 -C.sub.20 alkyl, lowercycloalkyloweralkyl or lowercycloalkyl; n is an integer from 3 to 7, and particularly 3 to 5; Y is a straight or branched chain C.sub.1 -C.sub.8 alkylene; and R.sub.3 is ##EQU1## WHEREIN A IS AN INTEGER FROM 1 TO 4, B IS AN INTEGER FROM 1 TO 4, X is O,S, CH.sub.2 or NR.sub.4 and R.sub.4 is hydrogen C.sub.1 -C.sub.6 alkyl, and R.sub.5 is hydrogen or C.sub.1 -C.sub.6 alkyl; and the acid addition salts thereof. The compounds exhibit analgesic and central nervous system activity.

  这项发明涉及由以下式表示的新型苯并吡喁酯 ##SPC1## 其中R和R'为氢或C.sub.1 -C.sub.6烷基，当烷基位于相同或不同的碳上时；R.sub.1为C.sub.1 -C.sub.6烷基；R.sub.2为C.sub.1 -C.sub.20烷基，较低的环烷烃较低的烷基或较低的环烷烃；n为3到7的整数，特别是3到5；Y为直链或支链C.sub.1 -C.sub.8亚烷基；R.sub.3为##EQU1## 其中A为1到4的整数，B为1到4的整数，X为O、S、CH.sub.2或NR.sub.4，R.sub.4为氢C.sub.1 -C.sub.6烷基，R.sub.5为氢或C.sub.1 -C.sub.6烷基；以及它们的酸盐。这些化合物表现出镇痛和中枢神经系统活性。
• [EN] CYLCOALKENYL DERIVATIVES USEFUL AS AGONISTS OF THE GPR120 AND /OR GPR40 RECEPTORS<br/>[FR] DÉRIVÉS DE CYLCOALCÉNYLE UTILES EN TANT QU'AGONISTES DES RÉCEPTEURS GPR120 ET/OU GPR40
  申请人：JANSSEN PHARMACEUTICA NV

  公开号：WO2019171277A1

  公开（公告）日：2019-09-12

  The present invention is directed to cycloalkenyl derivatives, pharmaceutical compositions containing them and their use in the treatment of disorders and conditions modulated by the GPR120 and / or GPR40 receptors. 5 More particularly, the compounds of the present invention are agonists of GPR120 and / or GPR40, useful in the treatment of, for example, obesity, Type II Diabetes Mellitus, dyslipidemia, etc.

  本发明涉及环烯基衍生物，含有它们的药物组合物以及它们在治疗由GPR120和/或GPR40受体调节的疾病和症状中的应用。更具体地说，本发明的化合物是GPR120和/或GPR40的激动剂，在治疗肥胖、2型糖尿病、血脂异常等方面有用。