ethyl (2R,3R)-2-amino-3-methyl-4-oxopentanoate | 885054-34-2

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: ethyl (2R,3R)-2-amino-3-methyl-4-oxopentanoate
• CAS: 885054-34-2
• 化学式: C₈H₁₅NO₃
• 分子量: 173.212
• InChiKey: HQALQWROYJEYJJ-CAHLUQPWSA-N

物化性质

• 沸点：
  252.8±25.0 °C(Predicted)
• 密度：
  1.045±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.1
• 重原子数：
  12.0
• 可旋转键数：
  4.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  69.39
• 氢给体数：
  1.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  ethyl (2R,3R)-2-amino-3-methyl-4-oxopentanoate 在 L-Selectride 、 potassium carbonate 作用下， 以 四氢呋喃 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 20.0h， 生成 (3R,4R,5S)-3-(dibenzylamino)-4,5-dimethyldihydrofuran-2(3H)-one
  参考文献：
  名称：

  Isolation of Positive Modulator of Glucagon-like Peptide-1 Signaling from Trigonella foenum-graecum (Fenugreek) Seed

  摘要：

  The glucagon-like peptide-1 receptor (GLP-1R) is expressed in many tissues and has been implicated in diverse physiological functions, such as energy homeostasis and cognition. GLP-1 analogs are approved for treatment of type 2 diabetes and are undergoing clinical trials for other disorders, including neurodegenerative diseases. GLP-1 analog therapies maintain chronically high plasma levels of the analog and can lead to loss of spatiotemporal control of GLP-1R activation. To avoid adverse effects associated with current therapies, we characterized positive modulators of GLP-1R signaling. We screened extracts from edible plants using an intracellular cAMP biosensor and GLP-1R endocytosis assays. Ethanol extracts from fenugreek seeds enhanced GLP-1 signaling. These seeds have previously been found to reduce glucose and glycated hemoglobin levels in humans. An active compound (N55) with a new N-linoleoyl-2-amino-gamma-butyrolactone structure was purified from fenugreek seeds. N55 promoted GLP-1-dependent cAMP production and GLP-1R endocytosis in a dose-dependent and saturable manner. N55 specifically enhanced GLP-1 potency more than 40-fold, but not that of exendin 4, to stimulate cAMP production. In contrast to the current allosteric modulators that bind to GLP-1R, N55 binds to GLP-1 peptide and facilitates trypsinmediated GLP-1 inactivation. These findings identify a new class of modulators of GLP-1R signaling and suggest that GLP-1 might be a viable target for drug discovery. Our results also highlight a feasible approach for screening bioactive activity of plant extracts.

  DOI：

  10.1074/jbc.m115.672097
• 作为产物：
  描述：

  ethyl (2R,3R)-2-(4-methoxyphenylamino)-3-methyl-4-oxopentanoate 在 ammonium peroxydisulfate 、 ammonium cerium (IV) nitrate 作用下， 以 水 、 乙腈 为溶剂， 反应 3.0h， 生成 ethyl (2R,3R)-2-amino-3-methyl-4-oxopentanoate
  参考文献：
  名称：

  Isolation of Positive Modulator of Glucagon-like Peptide-1 Signaling from Trigonella foenum-graecum (Fenugreek) Seed

  摘要：

  The glucagon-like peptide-1 receptor (GLP-1R) is expressed in many tissues and has been implicated in diverse physiological functions, such as energy homeostasis and cognition. GLP-1 analogs are approved for treatment of type 2 diabetes and are undergoing clinical trials for other disorders, including neurodegenerative diseases. GLP-1 analog therapies maintain chronically high plasma levels of the analog and can lead to loss of spatiotemporal control of GLP-1R activation. To avoid adverse effects associated with current therapies, we characterized positive modulators of GLP-1R signaling. We screened extracts from edible plants using an intracellular cAMP biosensor and GLP-1R endocytosis assays. Ethanol extracts from fenugreek seeds enhanced GLP-1 signaling. These seeds have previously been found to reduce glucose and glycated hemoglobin levels in humans. An active compound (N55) with a new N-linoleoyl-2-amino-gamma-butyrolactone structure was purified from fenugreek seeds. N55 promoted GLP-1-dependent cAMP production and GLP-1R endocytosis in a dose-dependent and saturable manner. N55 specifically enhanced GLP-1 potency more than 40-fold, but not that of exendin 4, to stimulate cAMP production. In contrast to the current allosteric modulators that bind to GLP-1R, N55 binds to GLP-1 peptide and facilitates trypsinmediated GLP-1 inactivation. These findings identify a new class of modulators of GLP-1R signaling and suggest that GLP-1 might be a viable target for drug discovery. Our results also highlight a feasible approach for screening bioactive activity of plant extracts.

  DOI：

  10.1074/jbc.m115.672097

文献信息

• Method for preparing 4-hydroxyisoleucine diastereoisomers and enantiomers and derivatives thereof
  申请人：Mioskowski Charles

  公开号：US20060205817A1

  公开（公告）日：2006-09-14

  The invention concerns a method for preparing 4-hydroxyisoleucine diastereoisomers and enantiomers and derivatives thereof of general formula (I), characterized in that it consists in reducing an isoxazole derivative of formula (II) in conditions directly resulting in the derivatives of formula (I), or in obtaining at least a lactone of structure (III) in racemic form(s), or a enantiomerically enriched mixture, followed by opening, in basic conditions, in an aprotic or protic solvent, the desired lactone(s) and, optionally, separating the desired form. The invention is useful for preparing in particular (2S, 3R, 4S)-4-hydroxyisoleucine

  该发明涉及一种制备4-羟基异亮氨酸对映体和差向异构体及其衍生物的方法，其一般式为(I)，其特征在于它包括在直接导致式(I)衍生物的条件下还原一种异噁唑烷衍生物的步骤，或者在获得至少一种外消旋形式的结构为(III)的内酯，或者在手性富集混合物中，然后在碱性条件下，在无极性或极性溶剂中开环所需的内酯，并且可选地分离所需的形式。该发明可用于特别制备(2S, 3R, 4S)-4-羟基异亮氨酸。
• Total synthesis and absolute structure of N55, a positive modulator of GLP-1 signaling
  作者：Nai-Pin Lin、Rong-Jie Chein

  DOI：10.1039/d0ob01722a

  日期：——

  Glucagon-like peptide-1 (GLP-1) signaling is an established therapeutic target for type 2 diabetes mellitus (T2DM). We developed a 7-step synthesis of N55, a positive modulator of GLP-1 signaling isolated from fenugreek (Trigonella foenum-graecum) seeds, with 29% overall yield, and we determined the absolute structure of N55 to be N-((3R,4R,5S)-4,5-dimethyl-2-oxotetrahydrofur-3-yl)linoleic amide.

  胰高血糖素样肽-1 (GLP-1) 信号传导是 2 型糖尿病 (T2DM) 的既定治疗靶点。我们开发了N55的 7 步合成，这是从葫芦巴 ( Trigonella foenum-graecum ) 种子中分离的 GLP-1 信号的正调节剂，总产率为 29%，我们确定N55的绝对结构为N -((3 R ,4 R ,5 S )-4,5-二甲基-2-氧代四氢呋喃-3-基)亚油酰胺。