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Derivative of folacin alkylation and application

A technology of folic acid alkyl and derivatives, which is applied in organic chemistry, drug combination, medical preparations containing active ingredients, etc. Therapeutic effect, the effect of accelerating cellular uptake

Inactive Publication Date: 2007-12-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the simple physical encapsulation of folic acid with such carriers will, on the one hand, cause a large amount of folic acid leakage during the in vivo transport process, and on the other hand, it may be encapsulated in or distributed in lipid materials. Thus affecting the tumor cell targeting effect of folic acid

Method used

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  • Derivative of folacin alkylation and application
  • Derivative of folacin alkylation and application
  • Derivative of folacin alkylation and application

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Embodiment 1: Synthesis and application of stearic acid derivatives of folic acid

[0021] 1) Synthesis of stearic acid derivatives of folic acid

[0022] Accurately weigh stearic acid 20mg and be dissolved in 5ml dimethylformamide (DMF), stir under magnetic force (400r min -1 ), add 20mg of carbodiimide (EDC), after 1 hour of reaction, add 30mg of folic acid and 0.5ml of pyridine, stir and react overnight at room temperature. Add water to precipitate the precipitate, dialyze with distilled water to remove unreacted free folic acid, freeze-dry to obtain the stearic acid derivative of folic acid. Its NMR spectrum is shown in Figure 1.

[0023] 2) Transport of stearic acid derivative lipid nanoparticles containing folic acid in lung cancer A549 cells

[0024] The present invention adopts stearic acid derivative lipid nanoparticle of folic acid containing fluorescein isothiocyanate (FITC) and stearylamine chemical graft to carry out translocation research of lung cancer...

Embodiment 2

[0039] Embodiment 2: the synthesis and application of stearylamine derivatives of folic acid

[0040] 1) Synthesis of stearylamine derivatives of folic acid

[0041] Accurately weigh stearylamine 20mg and dissolve it in 5ml dimethylformamide (DMF), stir it under magnetic force (400r min -1 ), add 20mg of carbodiimide (EDC), after 1 hour of reaction, add 30mg of folic acid and 0.5ml of pyridine, stir and react overnight at room temperature. Add water to precipitate the precipitate, dialyze with distilled water to remove unreacted free folic acid, and freeze-dry to obtain the stearylamine derivative of folic acid. See Figure 3 for the nuclear magnetic resonance spectrum of the stearylamine derivative of folic acid.

[0042] 2) Transport of stearylamine derivative lipid nanoparticles containing folic acid in lung cancer A549 cells

[0043] The present invention adopts stearylamine derivative lipid nanoparticles of folic acid containing fluorescein isothiocyanate (FITC) and ste...

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Abstract

This invention provides a folic acid alkylated derivatives, more specifically, folic acid stearyl amine derivative I and folic acid stearic acid derivative II, which are obtained by coupling reaction of folic acid amino and stearic acid carboxyl, or folic acid carboxyl and stearyl amine amino. The folic acid alkylated derivatives can be used to prepare folic acid modified lipid nanoparticles. The alkyl chains of the derivatives have compatibility with lipid nanoparticles, which can accelerate the absorption of lipid nanoparticles, and increase the tumor targeting performance of lipid nanoparticles. The folic acid alkylated derivatives can be used in preparing folic acid modified lipid nanoparticles carrying antitumor drugs. The structural formula of the folic acid alkylated derivatives is shown in this invention.

Description

technical field [0001] The invention belongs to a synthesis method of compounds, and relates to the synthesis of folic acid alkylated derivatives and their application in antitumor therapy. Background technique [0002] Tumor has always been a major disease that directly threatens human health. Due to the lack of molecular targeting of the drug itself, tumor chemotherapy has major treatment problems such as low cure rate and huge toxic side effects. Directly targeting drugs to diseased tissues (organs) and cells through appropriate carrier technology is one of the important means to solve the low cure rate and toxic side effects of cancer chemotherapy. At present, scientists at home and abroad have made some progress in the tissue (organ) and cell targeting of tumor drugs through carrier technology, but have not achieved breakthrough curative effects. The essence is that the molecular targets of most anti-tumor drugs are located in Intracellular, so the research and develop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D475/04A61K9/127A61K31/519A61P35/00
Inventor 胡富强杜永忠袁弘游剑
Owner ZHEJIANG UNIV
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