Methods of preparing activated polymers having alpha...

C - Chemistry – Metallurgy – 08 – G

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C08G 65/334 (2006.01) C12N 9/82 (2006.01) C12N 9/96 (2006.01)

Patent

CA 2636284

Methods for preparing substantially non-antigenic polymers having lone electron pair-containing moieties in high purity are disclosed. The polymers are useful as intermediates for synthesis of amine-based polymers and in the formation of activated polymers for conjugation with nucleophiles. Conjugates and methods of preparation and treatment with the conjugates are also disclosed. The resultant polymer-amines are of sufficient purity so that expensive and time consuming purification steps required for pharmaceutical grade polymers are avoided.

La présente invention concerne des procédés de préparation de polymères essentiellement non antigéniques présentant des groupes fonctionnels contenant des paires d~électrons célibataires de pureté élevée. Lesdits polymères sont utiles en tant qu~intermédiaires pour la synthèse de polymères à base d~amine et dans la formation de polymères activés pour la conjugaison avec des nucléophiles. La présente invention concerne également des conjugués et des procédés de préparation et de traitement à l~aide desdits conjugués. Les polymères-amines ainsi obtenus sont suffisamment purs pour qu~il soit possible d~omettre les étapes de purification nécessaires pour les polymères de qualité pharmaceutiques, lesquelles sont chronophages et onéreuses.

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