Antimicrobial cationic polymers having one or two cationic polycarbonate chains were prepared by organocatalyzed ring opening polymerization. One antimicrobial cationic polymer has a polymer chain consisting essentially of cationic carbonate repeat units linked to one or two end groups. The end groups can comprise a covalently bound form of biologically active compound such as cholesterol. Other antimicrobial cationic polymers have a random copolycarbonate chain comprising a minor mole fraction of hydrophobic repeat units bearing a covalently bound form of a vitamin E and/or vitamin D2. The cationic polymers exhibit high activity and selectivity against Gram-negative and Gram-positive microbes and fungi.
VITAMIN FUNCTIONALIZED GEL-FORMING BLOCK COPOLYMERS FOR BIOMEDICAL APPLICATIONS
申请人:INTERNATIONAL BUSINESS MACHINES CORPORATION
公开号:US20180117162A1
公开(公告)日:2018-05-03
Gel-forming block copolymers were prepared comprising i) a central hydrophilic block consisting essentially of a divalent poly(ethylene oxide) chain and ii) two peripheral monocarbonate or polycarbonate hydrophobic blocks linked to the central block by linking groups bearing one or more hydrogen bond forming *—N(H)—* groups. The hydrophobic blocks comprise one or more vitamin-bearing subunits. The gel-forming block copolymers can be used to prepare various biodegradable and/or biocompatible hydrogel and organogel drug compositions, in particular antimicrobial and/or anti-tumor drug compositions. The hydrogel compositions have utility in depot injections for drug delivery. The hydrogen bonding *—N(H)—* group(s) provide longer in vivo lifetime of the hydrogel before degradation and a more prolonged and controlled release rate of a hydrophobic drug compared to similar hydrogels prepared from poly(ethylene glycol).
[EN] FORMULATIONS FOR IMPROVING THE EFFICACY OF HYDROPHOBIC DRUGS<br/>[FR] FORMULATIONS PERMETTANT D'AMÉLIORER L'EFFICACITÉ DES MÉDICAMENTS HYDROPHOBES
申请人:PEPTINOVO BIOPHARMA LLC
公开号:WO2017011312A1
公开(公告)日:2017-01-19
Novel amphiphilic peptide, peptide amphiphile lipid micelles, processes for making peptide amphiphile lipid micelles comprising an amphiphilic peptide and phospholipid and optionally comprising a cargo molecule, and methods of use.
Antimicrobial cationic polymers having one or two cationic polycarbonate chains were prepared by organocatalyzed ring opening polymerization. One antimicrobial cationic polymer has a polymer chain consisting essentially of cationic carbonate repeat units linked to one or two end groups. The end groups can comprise a covalently bound form of biologically active compound such as cholesterol. Other antimicrobial cationic polymers have a random copolycarbonate chain comprising a minor mole fraction of hydrophobic repeat units bearing a covalently bound form of a vitamin E and/or vitamin D2. The cationic polymers exhibit high activity and selectivity against Gram-negative and Gram-positive microbes and fungi.
通过有机催化开环聚合法制备了具有一条或两条阳离子聚碳酸酯链的抗菌阳离子聚合物。一种抗菌阳离子聚合物的聚合物链主要由与一个或两个端基相连的阳离子碳酸酯重复单元组成。端基可包括共价结合形式的生物活性化合物,如胆固醇。其他抗菌阳离子聚合物具有无规共聚碳酸酯链,该链由一小部分疏水重复单元组成,其中含有共价结合形式的维生素 E 和/或维生素 D2。这些阳离子聚合物对革兰氏阴性和革兰氏阳性微生物和真菌具有很高的活性和选择性。
FORMULATIONS OF LIPOPHILIC BIOACTIVE MOLECULES
申请人:Borowy-Borowski Henryk
公开号:US20080254188A1
公开(公告)日:2008-10-16
This invention provides aqueous and non-aqueous clear formulations including at least one lipophilic bioactive molecules and an amphiphilic solubilizing agent. Exemplary aqueous formulations include a water-soluble reducing agent, which diminishes or prevents chemical degradation of the lipophilic bioactive molecule. The invention also provides methods of using the formulations of the invention. For example, the invention provides beverages including the formulations of the invention. The invention further provides methods of making the formulations and beverages.