HYDROLYSABLE LINKERS AND CROSS-LINKERS FOR ABSORBABLE POLYMERS
申请人:Bezwada Rao S.
公开号:US20090082540A1
公开(公告)日:2009-03-26
The present invention relates to the discovery of new class of linear and multiarmed hydrolysable linkers and cross linkers for use in the synthesis of biodegradable polymers such as, polyesters, polyurethanes, polyamides, polyureas and degradable epoxy amine resin. The linear and multiarmed hydrolysable linkers of the present invention include symmetrical and/or unsymmetrical ether carboxylic acids, amines, amide diols, amine polyols and isocyanates.
BIOABSORBABLE POLYMERS FROM BIOABSORBABLE POLYISOCYANATES AND USES THEREOF
申请人:Bezwada Rao S.
公开号:US20090292029A1
公开(公告)日:2009-11-26
Novel bioabsorbable and/or biocompatible polyurethanes, polyureas, polyamideurethanes and polyureaurethanes with tunable physical, mechanical properties and hydrolytic degradation profiles are provided for use in biomedical applications such as stents, stent coatings, scaffolds, foams, and films. The disclosed polymers may be derived from biocompatible and/or bioabsorbable polyisocyanates. The present invention also relates to new and improved methods for the preparation of the biocompatible and/or bioabsorbable polyisocyanates.
Processes for the Preparation of Lesinurad and Intermediates Thereof
申请人:Apotex Inc.
公开号:US20180258057A1
公开(公告)日:2018-09-13
The present invention provides processes for the preparation of Lesinurad (1), as well as intermediates useful in the preparation thereof. In particular, the processes of the invention utilize novel intermediate compounds of Formulas (3) and (11), which provide improvements over the known processes for the preparation of Lesinurad (1).
PROCESS FOR THE PREPARATION OF CROSSLINKED NITROXIDE POLYMERS
申请人:Nesvadba Peter
公开号:US20100240858A1
公开(公告)日:2010-09-23
The invention relates to a process for the preparation of crosslinked polymers bearing nitroxide groups, which are prepared by a method frequently called atom transfer radical addition polymerization (ATRA). A further aspect of the invention is the use of such polymeric crosslinked nitroxides as stabilizers for polymers against the detrimental influences of heat and UV light, as stabilizers against premature polymerization of vinyl aromatic monomers and as active electrode materials in secondary batteries.
Processes for the preparation of lesinurad and intermediates thereof
申请人:Apotex Inc.
公开号:US10351537B2
公开(公告)日:2019-07-16
The present invention provides processes for the preparation of Lesinurad (1), as well as intermediates useful in the preparation thereof. In particular, the processes of the invention utilize novel intermediate compounds of Formulas (3) and (11), which provide improvements over the known processes for the preparation of Lesinurad (1).