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Quinoline derivative and application thereof in diabetes

A derivative, quinoline technology, applied in the field of quinoline derivatives and its application in diabetes, can solve the problems of inactivation and short half-life

Inactive Publication Date: 2018-11-30
TONGCHUAN PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the substrate of DPP-4, GLP-1 has a very short half-life and will be rapidly cut and inactivated by DPP-4 within 1-2 minutes after secretion.

Method used

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  • Quinoline derivative and application thereof in diabetes
  • Quinoline derivative and application thereof in diabetes
  • Quinoline derivative and application thereof in diabetes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: Synthesis of 4-(8-(naphthalene-2-yl)-quinolin-2-yl)-2,6-diisopropylpyridine-3,5-dicarboxylic acid diethyl ester

[0032]

[0033] 1. Synthesis of (Z)-2-((8-bromo-quinolin-2-yl)methylene)-4-methyl-3-oxopentanoic acid ethyl ester

[0034]

[0035] In a 150 mL round bottom flask equipped with a magnetic stirrer, 8-bromo-quinoline-4-carbaldehyde (compound 1) (8.50 g, 36.00 mmol), ethyl 4-methyl-3-oxopentanoate ( Compound 2) (5.70 g, 36.03 mmol), isopropanol (21.1 mL), piperidine (2.2 mL) and glacial acetic acid (1.2 mL). The reaction mixture was stirred at room temperature under nitrogen for 12 hours. The solvent was removed under reduced pressure. The residue was dissolved with dichloromethane (13.88 mL) and washed with saturated NaHCO 3 (3*30mL) solution washed with anhydrous MgSO 4 After drying, remove MgSO by filtration 4 , after concentrating the solvent under reduced pressure, flash column chromatography to obtain off-white solid (Z)-2-((8-bromo-...

Embodiment 2

[0045] Example 2: 4-(8-(4-methyl-naphthalen-2-yl)-quinolin-2-yl)-2,6-diisopropylpyridine-3,5-dicarboxylic acid diethyl ester synthesis

[0046]

[0047] 4-methyl-naphthalene-2-boronic acid (19.60mmol), compound 5 (9.69g, 18.87mmol), Na 2 CO 3 (6.23g, 58.8mmol), DME (31.75mL) and H 2 O (7.83 mL) was added to a 100 mL microwave vial. vial with N 2 Degas for 1 h, then add PdCl 2 (dppf)CH 2 Cl 2 (1.73 g, 2.35 mmol) adduct. The reaction mixture was heated at 120 °C for 2 hours by microwave irradiation. The resulting mixture was diluted with ethyl acetate and filtered through celite, then concentrated in vacuo. Purification by flash chromatography using 0-100% ethyl acetate / heptane as eluent afforded 4-(8-(4-methyl-naphthalen-2-yl)-quinolin-2-yl as an off-white solid )-diethyl 2,6-diisopropylpyridine-3,5-dicarboxylate, 8.57 g, yield 79%. LC-MS (ESI, pos, ion) m / z: 575 [M+H].

Embodiment 3

[0048] Example 3: 4-(8-(4,5 Dimethyl-naphthalen-2-yl)-quinolin-2-yl)-2,6-diisopropylpyridine-3,5-dicarboxylic acid diethyl Synthesis of esters

[0049]

[0050] 4,5 dimethyl-naphthalene-2-boronic acid (19.60mmol), compound 5 (9.69g, 18.87mmol), Na 2 CO 3 (6.23g, 58.8mmol), DME (31.75mL) and H 2 O (7.83 mL) was added to a 100 mL microwave vial. vial with N 2 Degas for 1 h, then add PdCl 2 (dppf)CH 2 Cl 2 (1.73 g, 2.35 mmol) adduct. The reaction mixture was heated at 120 °C for 2 hours by microwave irradiation. The resulting mixture was diluted with ethyl acetate and filtered through celite, then concentrated in vacuo. Purification by flash chromatography using 0-100% ethyl acetate / heptane as eluent afforded 4-(8-(4,5-dimethyl-naphthalen-2-yl)-quinoline-2 as an off-white solid -Diethyl)-2,6-diisopropylpyridine-3,5-dicarboxylate, 8.44 g, yield 76%. LC-MS (ESI, pos, ion) m / z: 589 [M+H].

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PUM

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Abstract

The invention discloses a quinoline derivative or pharmacologically acceptable salt shown as a formula I (The formula is shown in the description), wherein R1, R2, R3 and R4 are respectively selectedfrom H or CH3. The compound listed in an in vitro DPP-4 enzyme inhibition test on the inhibition activity of DPP-4 is between Sitagliptin and omarigliptin. The quinoline derivative shown as the formula I disclosed by the invention is a DPP-4 inhibitor with a novel structure type, and the characteristics of the quinoline derivative in pharmacological toxicology and pharmacokinetics deserve more in-depth study, so that drugs used for treating and / or preventing non-insulin-dependent diabetes, hyperglycemia or insulin resistance can be obtained.

Description

technical field [0001] The invention relates to a quinoline derivative and its application in diabetes. Background technique [0002] Diabetes is a disease that seriously threatens human health due to absolute or relative insufficiency of insulin, resulting in elevated blood sugar, which can lead to serious complications and eventually disability or death. There are many kinds of traditional hypoglycemic drugs, mainly divided into insulin sensitizers (such as biguanides, thiazolidinediones, etc.) and insulin secretagogues (such as sulfonylureas and non-sulfonylureas), and so on. But these drugs do not prevent the progression of diabetes, and there are toxic side effects such as weight gain, hypoglycemia, and eventual loss of efficacy. Therefore, it is an urgent task to develop new antidiabetic drugs to prevent or even reverse the deterioration of the disease. [0003] Dipeptidyl peptidase IV (DPP-4) is a glycoprotein widely distributed in the human body. Its function is si...

Claims

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Application Information

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IPC IPC(8): C07D401/04A61K31/4709A61P3/10A61P5/50
CPCA61P3/10A61P5/50C07D401/04
Inventor 孟晓旭
Owner TONGCHUAN PEOPLES HOSPITAL
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