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Novel one step process for preparing cross-linked poly(allylamine) polymers

A technology of cross-linking polymer and allylamine, which can be used in pharmaceutical combinations, medical preparations containing active ingredients, metabolic diseases, etc., and can solve the problems of poor efficiency and expensive purification of cross-linking agents.

Inactive Publication Date: 2010-06-16
QUIMICA SINTETICA SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, purification of the crosslinked product from any unreacted crosslinker is an expensive and potentially poorly effective procedure

Method used

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  • Novel one step process for preparing cross-linked poly(allylamine) polymers
  • Novel one step process for preparing cross-linked poly(allylamine) polymers
  • Novel one step process for preparing cross-linked poly(allylamine) polymers

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preparation example Construction

[0100] In another embodiment, the present invention provides a process for the preparation of a carbonate salt of a crosslinked poly(allylamine) polymer comprising:

[0101] a) dissolving sodium carbonate in water at a temperature of 30-40°C;

[0102] b) adding the hydrochloride salt of the cross-linked poly(allylamine) polymer dropwise to the solution;

[0103] c) stirring the mixture obtained in b);

[0104] d) recovering the solid by filtration and resuspending it in water;

[0105] e) Filtration, washing and drying of the carbonate salt of the cross-linked poly(allylamine) polymer.

[0106] Sodium carbonate is dissolved in water at a temperature of about 30-40°C. Preferably, the sodium carbonate / water ratio is about 50-85 wt / vol, preferably 62.5 wt / vol.

[0107] The hydrochloride salt of the cross-linked poly(allylamine) polymer was added dropwise to this solution. Preferably, the crosslinked poly(allylamine) polymer / sodium carbonate ratio is about 1.5-1.6 weight / weig...

Embodiment 1

[0162] 1,3-Bis-allylamino-2-propanol (IV), preparation of dihydrochloride

[0163] Allylamine (321 g, 5.62 mol) and water (46 mL) were added to a 1 L four-necked flask equipped with a mechanical stirrer, temperature probe, dropping funnel, and condenser with a nitrogen inlet on top. The resulting mixture was heated to 57 °C and a solution of glycidyl tosylate (Va) (128 g, 0.561 mol) in THF (128 mL) was added dropwise while maintaining vigorous stirring. When the addition of (Va) was complete, the reaction was allowed to stand at 62°C for 45 minutes. The progress and / or completion of the reaction was monitored by TLC according to the disappearance of (Va) (eluent: n-hexane / ethyl acetate 7:3 v / v). The reaction mixture was concentrated to a residue under reduced pressure, isopropanol (700 mL) was added and the pH of the solution was adjusted to 1-1.5 by adding aqueous hydrochloric acid (37%, 148 mL). While stirring, the mixture was cooled to 5 °C, and the solid was filtered a...

Embodiment 2

[0169] Preparation of Sevelamer Hydrochloride (III)

[0170] Method A

[0171] To a 250 mL jacketed reaction vessel equipped with a mechanical stirrer, temperature probe, dropping funnel and condenser with a nitrogen inlet on top was added 37% hydrochloric acid (27.6 g, 0.280 mol) and the solution was cooled to 0 °C. Allylamine (16 g, 0.280 mol) was added dropwise with stirring while maintaining the temperature at 5-10°C. After the addition was complete, acetonitrile (52.2 mL) and 1,3-bis-allylamino-2-propanol dihydrochloride (IV) (8.3 g, 0.034 mol) were added. The solution was heated to 50°C and the azo-initiator VA-044 (1.15 g) was added. The reaction was allowed to stir at 50°C for 24 hours. Additional VA-044 (1.15 g) was added and heating and stirring continued for a further 18 hours. The solid was then filtered off, washed with methanol (150 mL) and dried under reduced pressure at 40°C to give a granular pale yellow solid (27 g) with a phosphate binding capacity o...

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Abstract

The present invention relates to a novel one step process for preparing cross-linked poly(allylamine) polymers or salts thereof using the novel cross-linking agent of Formula (IV). This invention also relates to the compound of Formula (IV) as well as to a process to obtain it. The cross-linked poly(allylamine) polymers of the invention are useful in medicine as substrate-binding polymers.

Description

field of invention [0001] The present invention relates to a novel one-step process for the preparation of crosslinked poly(allylamine) polymers or salts thereof using novel crosslinkers of formula (IV). [0002] [0003] The invention also relates to compounds of formula (IV) and processes for obtaining them. [0004] The crosslinked poly(allylamine) polymers of the present invention exhibit controlled particle size and are useful as substrate binding polymers in medicine. Background of the invention [0005] In recent years, the immobilization of physiologically active molecules, such as drug molecules, enzyme molecules, etc., on polymer carriers has been extensively studied. [0006] Cross-linked poly(allylamine) polymers find many therapeutic applications as substrate-bound polymers: [0007] a) in hyperphosphatemia, orally administering a phosphate-binding polymer to remove phosphate from the gastrointestinal tract; [0008] b) In hypercholesterolemia, the use of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K31/785C08F226/02C08F226/06C07C215/24
CPCA61K31/785C08F226/04C07C215/18C08F226/02A61P3/00A61P3/12A61P3/06
Inventor S·彼安琪V·卡斯托维妥G·马拉斯S·比洛米G·卡斯托蒂G·范迪米格丽亚
Owner QUIMICA SINTETICA SA
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