Photoreactive Derivative of Hyaluronic Acid, Method of Preparation Thereof, 3D.Crosslinked Derivative of Hyaluronic Acid, Method of Preparation and Use Thereof
Tomas Bobula,Robert Pospisil,Radovan Buffa,Jana Ruzickova,Martina Moravcova,Pavel Klein,Vladimir Velebny
申请号：
US14647185
公开号：
US20150291706A1
申请日:
2013.11.26
申请国别(地区):
US
年份:
2015
代理人:
摘要：
The subject-matter of the invention is a photoreactive derivative of hyaluronic acid (formula I) and the method of preparation thereof, where first an aldehyde derivative of hyaluronic acid is prepared, oxidized in the position 6 of the glucosamine cycle and then the oxidized derivative reacts with an amine carrying a photoreactive species, for example 1-(2-aminoethyl)pyridine-2(1H)-one, in the presence of a reducing agent, forming a photoreactive derivative. The prepared photoreactive derivative may be then photocrosslinked, wherein the reaction is based on [4+4] photocycloaddition. Moreover, the invention relates to a 3D-crosslinked derivative of hyaluronic acid (formula II) which exhibits an increased hydrolytic stability and improved sorption properties, with the possibility of a further design of the physical properties thereof according to the requirements of the final applications, and moreover, to the use thereof in tissue engineering, regenerative medicine, medical agents or formulations or cosmetics.
