摘要:
A novel class of acyl-derivatives of carnitine is disclosed wherein the acyl radical is either the radical of unsaturated organic acids (typically, acrylic acid) or the radical of saturated organic acids substituted with tert-alkyl, cycloalkyl, cycloalkenyl, alkoxyl, heterocyclic and carboalkoxylradicals, or with aldehyde or hydroxy groups. These acyl-derivatives of carnitine are useful therapeutical agents in the treatment of cardiac disorders, hyperlipidaemias and hyperlipoproteinaemias.
摘要:
A novel class of alkoxy-acyl carnitines, wherein the alkoxy-acyl radical has from 4 to 6 carbon atoms (tipically: methoxypropionyl, ethoxypropionyl and propoxyacetyl) is prepared by reacting a solution of a carnitine salt in an organic solvent with an alkoxy-acyl halogenide, thus obtaining the corresponding salt of alkoxy-acyl carnitine. By eluting an aqueous solution of this salt through a column of an ion exchange resin activated in Cl.sup.- or Br.sup.- form, the chloride or bromide of alkoxy-acyl carnitine is obtained. The alkoxy-acyl carnitines are therapeutically effective in the treatment of cardiac disorders, hyperlipidaemias and hyperlipoproteinaemias.
摘要:
A novel class of acyl-derivatives of carnitine is disclosed wherein the acyl radical is either the radical of unsaturated organic acids (typically, acrylic acid) or the radical of saturated organic acids substituted with tert-alkyl, cycloalkyl, cycloalkenyl, alkoxyl, heterocyclic and carboalkoxylradicals, or with aldehyde or hydroxy groups. These acyl-derivatives of carnitine are useful therapeutical agents in the treatment of cardiac disorders, hyperlipidaemias and hyperlipoproteinaemias.
摘要:
Amides of carnitine or acyl-carnitines having general formula: ##STR1## wherein X.sup.- is a halogen anion, e.g. the chloride anionR is either hydrogen or an acyl radical, such as acetyl, propionyl or butyryl; andY is the residue of an optically active esterified amino-acid (e.g. the residue of L-phenylglycine methyl ester, ##STR2## are prepared by either (a) directly condensing D,L-carnitine (or acyl-D,L-carnitine) with an ester of an optically active aminoacid, or (b) preparing the acid halogenide of D,L-carnitine or acyl-D,L-carnitine and subsequently condensing it with an ester of an optically active aminoacid.The mixture of the diastereoisomer amides thus obtained is resolved by fractional crystallization from organic solvents into the respective separated diastereoisomers.These optically active amides are useful therapeutic agents for treating cardiac disorders, hyperlipidaemias and hyperlipoproteinaemias and, furthermore, can be hydrolyzed with procedures known per se into L-carnitine and D-carnitine, respectively.
摘要:
A Process for Preparing L-(-)-carnitine is disclosed which comprises acylating D-(+)-carnitinenitrile or D-(+)-carnitineamide to their respective acyl derivatives which, via acid hydrolysis, yield D-(+)-carnitine which is converted to the lactone of L-(-)-carnitine. The lactone when in base yields L-(-)-carnitine.
摘要:
Dithiodiacyl carnitines, intermediates for the preparation of mercaptoacyl-carnitines, are disclosed.These mercapto acyl-carnitines are useful therapeutic agents, e.g. for the treatment of intoxications and burns and as mucolytic agents.
摘要:
A novel class of carnitine derivatives is disclosed which comprises thiocarnitine and the S-acyl thiocarnitines wherein the acyl radical is the radical of saturated organic acids having from 2 to 10 carbon atoms. The S-acyl thiocarnitines are prepared e.g. by reacting crotonoyl betaine halogenide with the corresponding thio-acid, while thiocarnitine is obtained by hydrolysis of an S-acyl thiocarnitine. These compounds are useful therapeutic agents, e.g. for the treatment of intoxications, liver malfunctions and burns.
摘要:
A novel class of esters of alkoxy-acylderivatives of carnitine, wherein the alkoxy-acyl radical has from 3 to 6 carbon atoms (typically: methoxyacetyl, methoxypropionyl, ethoxyacetyl, ethoxypropionyl and propoxyacetyl) is prepared by esterifying carnitine and then acylating the carnitine ester. Such esters are therapeutically useful in the treatment of cardiac disorders, hyperlipidaemias and hyperlipoproteinaemias.
摘要:
The esters of acyl L-carnitines with gamma-hydroxybutyric acid in the form of pharmacologically acceptable salts of formula (I) ##STR1## wherein X.sup.- is the anion of a pharmacologically acceptable salt, e.g. chloride, bromide, orotate, acid aspartate, acid citrate, acid phosphate, acid fumarate, lactate, acid maleate, acid oxalate, acid sulfate and glucosephosphate or in the form of inner salts of formula (I') ##STR2## wherein R is a straight or branched acyl group having from 2 to 5 carbon atoms, such as e.g. acetyl, propionyl, n-butyryl, isobutyryl and isovaleryl, are active in inhibiting neuronal degeneration (as it occurs in Alzheimer's senile dementia and Parkinson's disease) and in the treatment of coma.
摘要:
Thioalkanoyl-carnitines of general formula (I) ##STR1## wherein R is a straight alkylene radical having from 2 to 6 carbon atoms, or is a branched alkylene radical having from 3-6 carbon atoms, or is a branched alkylene radical having from 3-6 carbon atoms,R.sub.1 is a straight or branched lower alkyl radical having from 1 to 4 carbon atoms, andX.sup.- is a halogen anionare prepared by reacting a thio-acid (II) of general formula R.sub.1 COSH(a) if in (I) the thioalkanoyl radical R.sub.1 COS-- is in terminal position, with a compound of general formula (III) ##STR2## wherein n is an integer comprised between 0 and 4 or(b) if in (I) the thioalkanoyl radical R.sub.1 COS-- is not in terminal position, with a compound of general formula (IV) ##STR3## wherein m and m.sup.1 are integers comprised between 0 and 3, andR.sub.2 is a lower alkyl radical having from 1 to 4 carbon atoms.The pharmaceutical compositions containing the thioalkanoyl-carnitines (I) possess mucolytic and antitussive activity.