Alpha-aminoamidine polymers and uses thereof
US9872911B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2012 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Dec 15, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N15/113
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
α-Aminoamidine polymers and methods of preparing a-aminoamidine polymers by reacting by reacting one or more amines with one or more isocyanides and one or more aldehydes are described. Methods of preparing a-aminoamidine polymers from commercially available starting materials are also provided, wherein the starting materials are racemic or stereochemically pure. a-Aminoamidine polymers or salt forms thereof are preferably biodegradable and biocompatible and may be used in a variety of drug delivery systems and for other purposes as well such as, for example, coatings, additives, excipients, plastics, and materials, etc. Given the amino moiety of these α-aminoamidine polymers, they are particularly suited for the delivery of polynucleotides. Complexes, micelles, liposomes or particles containing the inventive α-aminoamidine polymers and polynucleotides can be prepared. The inventive α-aminoamidine polymers may also be used in preparing microparticles for drug delivery. They are particularly useful in delivering labile agents given their ability to buffer the pH of their surroundings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.