Raloxifene HCl is a drug with poor bioavailability and poor water solubility. Furthermore nomicron pharmaceutically acceptable organic solvent has been reported before to dilute the drug. It was observed that Raloxifene HCl can be diluted in a solvent mixture of acetone/water or ethanol/water. The aim of this study was to use biodegradable polymers in order to prepare Raloxifene HCl nanoparticl...

Dicarboxylic acids and their derivatives (esters and anhydrides) have been used as acylating agents in lipase-catalyzed reactions in organic solvents. The synthetic outcomes have been dimeric or hybrid derivatives of bioactive natural compounds as well as functionalized polyesters.

Telechelic polyesters have successfully been synthesized with lipasecatalyzed polymerization. The produced telechelics had a high degree of difunctionalization, high purity (requiring little or no workup) and controlled degree of polymerization. The syntheses were performed in one-pot one-step reaction systems. Two different types of lipase-catalyzed polymerizations were applied – ring-opening ...

Abstract In recent years, there has been a trend toward replacing petrochemical raw materials with so-called “bio” plastics, i.e. plastics from renewable sources. Herein, the susceptibility of degradation in compost heap three types packaging polyesters, by means PET and biobased PEF PLA, other thermoplastic polyesters more methylene groups (three six) bio—(PTF PHF, respectively) petrochemicall...

Aliphatic biodegradable polyesters have been the most widely used synthetic polymers for developing biodegradable devices as alternatives for the currently used permanent medical devices. The performances during biodegradation process play crucial roles for final realization of their functions. Because physiological and biochemical environment in vivo significantly affects biodegradation proces...

The depolymerization of polymers by enzymes is of great interest for biodegradable plastics, a group of materials which has been developed as an answer to increasing problems in plastics waste management. Polyesters play the dominant role in biodegradable polymers and recently a model of polyester degradation by hydrolyses (lipases) has been published. The chain mobility of the polymer chains p...

Biomass derivable epichlorohydrin undergoes ring-opening copolymerization with either succinic or itaconic anhydride (both biosourcable) under standard laboratory conditions using metal-based an entirely organic initiator to form highly functionalized, low molecular weight polyesters. The linear polyesters obtained from and contain both alkyl chlorides ?,?-unsaturated esters can be crosslinked ...

A new amide monomer for step growth polymerisation is reported: the chemistry exploits a bulky malonamide for the synthesis of polyesters and polyamides. No additives are needed and the only by-product, an amine, can be recycled.