Abstract:
Compounds of general formula (I), where Ar = phenyl or beta-naphtyl, R1 = one or more substituents of the phenyl or beta-naphtyl nucleus, preferably in para position, and selected out of the group consisting of H, CH3, C(CH3)3, CH2-CH-(CH3)2, O-CH3, C1, F, Br, CF3, NH2, S-CH3, SO-CH3, CN, NO2; R2 = H, CH3, C2H5, CH(CH3)2, CH2OH, C6H5; R3 = (a); where R4 = H, CH3, C2H5, CH(CH3)2, CH2-C6H5; R5 = H, CH3; X = none O, S, NH, NCH3; Y = O, NH, both in the racemic form and in the isomeric enantiomeric forms, which produce a nootropic effect, i.e. memory enhancement and learning facilitation, as well as an analgesic effect.
Abstract:
The present invention refers to pharmaceutical compositions containing monosialoganglioside GM1 or a derivative thereof, namely, the inner ester AGF2 and the methyl ester AGF4, suitable for the treatment of Parkinson's disease. A further object of the present invention is a therapy for Parkinson's disease based on the associated administration of the aforesaid compounds and, in addition, the N-dichloroacetyl lyso GM1 (LIGA 20) with known pharmaceuticals active in the aforesaid treatment, in particular with L-dopa and/or BDNF.
Abstract:
Low molecular weight heparin derivatives and salts thereof are prepared by treating a quaternary ammonium salt of a heparin, dissolved in a heterocyclic organic solvent or in an aprotic solvent, with an alkylating agent having from 6 to 30 carbon atoms at a temperature of about 20 DEG to 60 DEG C for a prolonged period of time, treating the resultant reaction product at a temperature of about 5 DEG to 120 DEG C with an inorganic or organic base, such as an alkaline hydroxide, in aqueous solution, and isolating the obtained heparin derivatives in their free form or as alkaline salts thereof. The heparin derivatives obtained according to the procedure of the invention constitute a mixture of mostly depolymerized products with a narrow range of molecular weight. These products are useful as anti-thrombotic agents.
Abstract:
Semisynthetic analogues of gangliosides selected from the group consisting of N-sulfo-, N-hydrocarbyl-sulfonyl- and N-hydrocarbyloxy-sulfonyl-N,N'-dilyso-gangliosides and the N'-acyl derivatives thereof, N'-sulfo-, N'-hydrocarbylsulfonyl- and N'-hydrocarbyloxy-sulfonyl-N,N'-dilyso-gangliosides and the N-acyl derivatives thereof, N,N'-di or polysulfo-N,N'-di- or poly-lyso-gangliosides, N,N'-di- or polyhydrocarbylsulfonyl-N,N'-di- or poly-lyso-gangliosides and N,N'-di- or polyhydrocarbyloxy-N,N'-di- or poly-lyso-gangliosides, and functional derivatives thereof, and salts of these compounds, have protective activity against neurotoxicity induced by excitatory amino acids and are foreseen to be used in therapy in the nervous system and in modulating of the expression of determinants such as CD4 on the surface of human cells in the immune system.
Abstract:
A phospholipid mixture in which the biological and pharmacological properties are maintained but from which unconventional viruses causing e.g. bovine spongiform encephalopathy are selectively eliminated may be prepared by extraction of phospholipids from bovine brain by a mixture of organic solvents of which one is a chlorinated hydrocarbon or by silica gel chromatography with elution with a succession of eluents consisting of chloroform, lower alcohols and water, or by a combination of extraction and silica gel chromatography. Purified phospholipids can be used in pharmaceutical compositions.
Abstract:
Pharmaceutical compositions containing monosialoganglioside derivatives suitable for the treatment of spinal cord injury caused by hypoxic-ischaemic or traumatic events, in which said derivatives are selected from the group consisting of the inner ester (AGF2) and the methyl ester (AGF4) of the monosialoganglioside (GM1).
Abstract:
The process of the invention relates to a process for the preparation of a ganglioside mixture, free from contaminants associated with non-conventional, life-threatening viruses, without altering the biological and pharmacological characteristics of the mixture on the central and peripheral nervous systems.
Abstract:
Inter and/or intramolecular cross-linked esters of acid polysaccharides are disclosed in which a part or all of the carboxy groups are esterified with hydroxyl groups of the same molecule and/or of different molecules of the acid polysaccharide. These inner cross-linked esters of polysaccharide acids are useful in the field of biodegradable plastic materials, to manufacture sanitary and surgical articles, in the cosmetic and pharmaceutical fields, in the food industry and in many other industrial fields.
Abstract:
Pharmaceutical preparations are described, comprised of salts of hyaluronic acid with a basic anaesthetic containing aliphatics and/or amino groups, particularly salts with benzydamine or bupivacaine.
Abstract:
A pharmaceutical composition which comprises as an active ingredient, an effective amount of 8-chloro-3(beta-diethylaminoethyl)-4-methyl-7-ethoxycarbonylmethoxy coumarin or a pharmaceutically acceptable salt thereof, for the treatment of pathological conditions involving high release of nitric oxide (NO).