Patent classifications
C07C231/02
Synthesis intermediates for obtaining derivatives of sphingosines, ceramides and sphingomyelins with good yields
The subject matter of the present invention is the novel molecules of formulae E, E′ and F. These molecules prove to be synthesis intermediates that are very advantageous for the manufacture of derivatives of sphingosine or of ceramides functionalized in position 1, with good yields, in which R.sub.1 and R.sub.2 are fatty chains, R.sub.3 is an alkyl group and R.sub.4 is a protective group for alcohol functions. Another subject of the invention is the use of the intermediates of type F for converting same into intermediates of type G, by means of reduction in the presence of lithium borohydride. The G molecules are precursors that are known to make it possible to obtain sphingolipids or sphingomyelin.
Method for preparing lacosamide
The present invention provides a novel method for preparing lacosamide with high chiral purity from D-serine. The method of the present invention can obtain lacosamide with high chiral purity in a high yield through a simple and environmentally-friendly process and thus can be easily applied to mass production.
Method for preparing lacosamide
The present invention provides a novel method for preparing lacosamide with high chiral purity from D-serine. The method of the present invention can obtain lacosamide with high chiral purity in a high yield through a simple and environmentally-friendly process and thus can be easily applied to mass production.
Method for preparing lacosamide
The present invention provides a novel method for preparing lacosamide with high chiral purity from D-serine. The method of the present invention can obtain lacosamide with high chiral purity in a high yield through a simple and environmentally-friendly process and thus can be easily applied to mass production.
Process for preparing the anti-tumor agent 6-(7-((1-aminocyclopropyl)methoxy)-6-methoxyquinolin-4-yloxy)-N-methyl-1-naphthamide and its crystalline
The present invention relates a new process to synthesize 6-(7-((1-aminocyclo-propyl)-methoxy)-6-methoxyquinolin-4-yloxy)-N-methyl-1-naphthamide (AL3810) by deprotection of substituted benzyl 1-((6-methoxy-4-(5-(methylcarbamoyl)naphthalen-2-yloxy)quinolin-7-yloxy)-methyl)cyc-lopropylcarbamate (Formula I) under a diluted or weak acidic condition. A stable crystalline form of 6-(7-((1-aminocyclo-propyl)-methoxy)-6-methoxyquinolin-4-yloxy)-N-methyl-1-naphthamide has also been prepared. ##STR00001##
Process for preparing the anti-tumor agent 6-(7-((1-aminocyclopropyl)methoxy)-6-methoxyquinolin-4-yloxy)-N-methyl-1-naphthamide and its crystalline
The present invention relates a new process to synthesize 6-(7-((1-aminocyclo-propyl)-methoxy)-6-methoxyquinolin-4-yloxy)-N-methyl-1-naphthamide (AL3810) by deprotection of substituted benzyl 1-((6-methoxy-4-(5-(methylcarbamoyl)naphthalen-2-yloxy)quinolin-7-yloxy)-methyl)cyc-lopropylcarbamate (Formula I) under a diluted or weak acidic condition. A stable crystalline form of 6-(7-((1-aminocyclo-propyl)-methoxy)-6-methoxyquinolin-4-yloxy)-N-methyl-1-naphthamide has also been prepared. ##STR00001##
Integrated methods and systems for producing amide and nitrile compounds
Provided herein are integrated methods and systems for the production of acrylamide and acrylonitrile compounds and other compounds from at least beta-lactones and/or beta-hydroxy amides.
Integrated methods and systems for producing amide and nitrile compounds
Provided herein are integrated methods and systems for the production of acrylamide and acrylonitrile compounds and other compounds from at least beta-lactones and/or beta-hydroxy amides.
RUTHENIUM COMPLEXES AND THEIR USES AS CATALYSTS IN PROCESSES FOR FORMATION AND/OR HYDROGENATION OF ESTERS, AMIDES AND RELATED REACTIONS
The present invention relates to novel Ruthenium complexes of formulae A1-A4 and their use, inter alia, for (1) dehydrogenative coupling of alcohols to esters; (2) hydrogenation of esters to alcohols (including hydrogenation of cyclic esters (lactones) or cyclic di-esters (di-lactones), or polyesters); (3) preparing amides from alcohols and amines—(including the preparation of polyamides (e.g., polypeptides) by reacting dialcohols and diamines and/or polymerization of amino alcohols and/or forming cyclic dipeptides from p-aminoalcohols; (4) hydrogenation of amides (including cyclic dipeptides, polypeptides and polyamides) to alcohols and amines; (5) hydrogenation of organic carbonates (including polycarbonates) to alcohols or hydrogenation of carbamates (including polycarbamates) or urea derivatives to alcohols and amines; (6) dehydrogenation of secondary alcohols to ketones; (7) amidation of esters (i.e., synthesis of amides from esters and amines); (8) acylation of alcohols using esters; (9) coupling of alcohols with water and a base to form carboxylic acids; and (10) preparation of amino acids or their salts by coupling of amino alcohols with water and a base. The present, invention further relates to the use of certain known Ruthenium complexes for the preparation of amino acids or their salts from amino alcohols.
RUTHENIUM COMPLEXES AND THEIR USES AS CATALYSTS IN PROCESSES FOR FORMATION AND/OR HYDROGENATION OF ESTERS, AMIDES AND RELATED REACTIONS
The present invention relates to novel Ruthenium complexes of formulae A1-A4 and their use, inter alia, for (1) dehydrogenative coupling of alcohols to esters; (2) hydrogenation of esters to alcohols (including hydrogenation of cyclic esters (lactones) or cyclic di-esters (di-lactones), or polyesters); (3) preparing amides from alcohols and amines—(including the preparation of polyamides (e.g., polypeptides) by reacting dialcohols and diamines and/or polymerization of amino alcohols and/or forming cyclic dipeptides from p-aminoalcohols; (4) hydrogenation of amides (including cyclic dipeptides, polypeptides and polyamides) to alcohols and amines; (5) hydrogenation of organic carbonates (including polycarbonates) to alcohols or hydrogenation of carbamates (including polycarbamates) or urea derivatives to alcohols and amines; (6) dehydrogenation of secondary alcohols to ketones; (7) amidation of esters (i.e., synthesis of amides from esters and amines); (8) acylation of alcohols using esters; (9) coupling of alcohols with water and a base to form carboxylic acids; and (10) preparation of amino acids or their salts by coupling of amino alcohols with water and a base. The present, invention further relates to the use of certain known Ruthenium complexes for the preparation of amino acids or their salts from amino alcohols.