摘要:
The present invention relates to novel synthetic polysaccharides with antithrombotic activity exhibiting at least one covalent bond with biotin or a biotin derivative and to a process employing avidin or streptavidin which makes it possible to neutralize these polysaccharides.
摘要:
The present invention relates to novel synthetic polysaccharides with antithrombotic activity exhibiting at least one covalent bond with biotin or a biotin derivative and to a process employing avidin or streptavidin which makes it possible to neutralize these polysaccharides.
摘要:
The oligosaccharides of the invention are composed essentially of chains:possessing a specific affinity for the anionic and cationic cell growth factor which recognize herparin,comprising at least one sequence of 5 residues matching those present in naturally occurring heparin and possessing a strongly anionic character such as that indicated in the NMR spectrum shown in FIG. 1, as well as their pharmacologically acceptable salts.
摘要:
The compositions of the invention are composed of fragments of heparin consisting essentially of repeated disaccharide sequences corresponding to the regular regions of heparin and possessing a MW between 4,800 and 9,000. These compositions can be used for the regulation of physiological systems.
摘要:
The oligosaccharides of the invention contain or are constituted by a tetrasaccharide enchainment of the formula: ##STR1## in which R.sub.1 represents an organic anion, R.sub.2 is identical to R.sub.1 or represents a hydrogen atom, N.sub.1 and N.sub.2 represent a functional amino group.
摘要:
1,4.alpha.disaccharides of formula: ##STR1## with Z representing a nitrogenous functional group,M hydrogen or a sulphate or acetyl group,R an alkyl radical of 1 to 4 carbon atoms andA functional group such as an acid group, or a derivative.
摘要:
The present invention concerns a pharmaceutical formulation intended for oral administration containing a synthetic oligosaccharides containing one to 18 monosaccharide units and having a therapeutical activity or a pharmaceutically acceptable additions salt or solvate thereof wherein the formulation contains: a) the synthetic oligosaccharide (A) in an amount of up to 5% by weight of the total weight of the formulation, advantageously up to 1% by weight of the total weight of the formulation, b), a lipophilic phase (B) consisting of triglyceride of fatty acids in an amount of 50 to 80% by weight of the total weight of the formulation, advantageously of 50 to 70% by weight of the total weight of the formulation, c) at least one lipophilic surfactant (C) with HLB below 7 consisting of partial esters of polyol and fatty acids in an amount of 10 to 30% by weight of the total weight of the formulation, advantageously of 15 to 30% by weight of the total weight of the formulation, d) at least one hydrophilic surfactant (D) with HLB above 7 in an amount of up to 20% by weight of the total weight of the formulation, advantageously up to 15% by weight of the total weight of the formulation, e) optionally, at least one hydrophilic solvent (E) in an amount of up to 15% by weight of the total weight of the formulation, advantageously up to 10% by weight of the total weight of the formulation, (F) between 0 and 30% by weight of the total weight of the formulation of a chemical and/or physical stabilization agent (F), advantageously between 0 and 20% by weight of the total weight of the formulation, wherein when the formulation is in a form of a reverse emulsion or microemulsion and contains at least one hydrophilic solvent (E), the physical stabilization agent is present and is silicon dioxide.
摘要:
The invention concerns novel biotinylated hexadecasaccharides of general formula (I) wherein: Biot is a biotin derivative; R, R1 and R2, represent independently of one another a C1-C6 alkoxy or and —OSO3; R3 represents a C1-C6 alkoxy or an —OSO3, or R3 constitutes a —O—CH2— bridge; Pe represents a saccharide concatenation; as well as their pharmaceutically acceptable salts, and their use as medicines.
摘要:
The invention concerns novel biotinylated hexadecasaccharides of general formula (I) wherein: Biot is a biotin derivative; R, R1 and R2, represent independently of one another a C1-C6 alkoxy or and —OSO3; R3 represents a C1-C6 alkoxy or an —OSO3, or R3 constitutes a —O—CH2— bridge; Pe represents a saccharide concatenation; as well as their pharmaceutically acceptable salts, and their use as medicines.
摘要:
Synthetic polysaccharides are disclosed containing 8-24 monosaccharide units made up of a concatenation of disaccharides consisting of a uronic acid and a hexose, wherein the hydroxyl groups of the polysaccharides are etherified with a C1-6 alkyl group or esterified in the form of a sulpho group, each disaccharide being at least monoetherified; and salts thereof, are disclosed.