[EN] METHOD FOR THE PREPARATION OF POLYMERIC CARRIERS FOR PH- CONTROLLED DRUG RELEASE AND THEIR CONJUGATES WITH DRUGS [FR] PROCÉDÉ SERVANT À LA PRÉPARATION DE SUPPORTS POLYMÈRES DESTINÉS À LA LIBÉRATION DE MÉDICAMENT COMMANDÉE PAR PH ET LEURS CONJUGUÉS AVEC DES MÉDICAMENTS
[EN] METHOD FOR THE PREPARATION OF POLYMERIC CARRIERS FOR PH- CONTROLLED DRUG RELEASE AND THEIR CONJUGATES WITH DRUGS<br/>[FR] PROCÉDÉ SERVANT À LA PRÉPARATION DE SUPPORTS POLYMÈRES DESTINÉS À LA LIBÉRATION DE MÉDICAMENT COMMANDÉE PAR PH ET LEURS CONJUGUÉS AVEC DES MÉDICAMENTS
申请人:USTAV MAKROMOLEKULARNI CHEMIE AV CR V V I
公开号:WO2021073667A1
公开(公告)日:2021-04-22
The present invention relates to an effective method of preparation of copolymers of N-(2-hydroxypropyl) methacrylamide (HPMA) and methacryloylaminoacylhydrazide, suitable for binding of drugs containing a keto group, for pH-controlled drug release. The method comprises the steps: a) providing of the monomers of the linear statistical copolymer; b) RAFT polymerisation of monomers of the linear statistical copolymer; c) introduction of hydrazide groups, and simultaneous in situ modification of the end groups of the linear statistical copolymer, optionally, binding a biologically active molecule to the ends of the polymer chain. The present invention further relates to a method of preparation of a conjugate of the linear statistical copolymer with a drug by means of a pH-sensitive hydrolysable hydrazone bond.