HEPARIN DERIVATIVES AND PROCESS FOR THEIR PREPARATION

New heparin derivative having antithrombotic activity, also endowed with reduced hemorrhagic and anticoagulant effects, obtained by treating in a basic medium heparins of various origin, optionally in the presence of alkali metal salts and of a reducing agent. The heparin derivatives obtained throug...

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Hauptverfasser: TAMAGNONE, GIANFRANCO, MILANI, MARIA R, PIANI, SILVANO, ALPINO, RAUL R, FANTUZ, MARINELLA
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creator TAMAGNONE, GIANFRANCO
MILANI, MARIA R
PIANI, SILVANO
ALPINO, RAUL R
FANTUZ, MARINELLA
description New heparin derivative having antithrombotic activity, also endowed with reduced hemorrhagic and anticoagulant effects, obtained by treating in a basic medium heparins of various origin, optionally in the presence of alkali metal salts and of a reducing agent. The heparin derivatives obtained through this treatment show peculiar chemico-physical characteristics, like new signals at about 53 and 54 p.p.m. in the 13C-NMR spectrum and a raise of the specific rotatory power, compared to that of the starting heparins, to values between +50.degree. to +90.degree.. Said structural modifications produce an improvement of the biological properties of the heparin, substantially keeping the antithrombotic activity while diminishing the hemorrhagic effect in vivo and the anticoagulant activity in vitro.
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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
DERIVATIVES THEREOF
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
POLYSACCHARIDES
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
THEIR PREPARATION OR CHEMICAL WORKING-UP
title HEPARIN DERIVATIVES AND PROCESS FOR THEIR PREPARATION
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