PROCESS FOR OBTAINING OLOPATADINE AND INTERMEDIATES

PROCESS FOR OBTAINING OLOPATADINE AND INTERMEDIATES

Olopatadine can be obtained by means of a process comprising hydrolysis of a compound of general formula (II), wherein Y is OR1, wherein R1 is C1-C7 alkyl, C3-C7 cycloalkyl, aryl, arylalkyl, or heterocycle; or NR2R3, wherein R2 and R3, independently from each other, are C1-C7 alkyl, aryl, arylalkyl,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SILVA GUISASOLA, LUIS OCTAVIO, LORENTE BONDE-LARSEN, ANTONIO, MATEOS BURON, LYDIA, GUTIERREZ FUENTES, LUIS GERARDO
Format: Patent
Sprache:eng ; fre
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:Olopatadine can be obtained by means of a process comprising hydrolysis of a compound of general formula (II), wherein Y is OR1, wherein R1 is C1-C7 alkyl, C3-C7 cycloalkyl, aryl, arylalkyl, or heterocycle; or NR2R3, wherein R2 and R3, independently from each other, are C1-C7 alkyl, aryl, arylalkyl, or R2 and R3 together with the nitrogen atom to which they are bound form a heterocycle of 3 to 7 members, obtained by means of a process comprising reacting the corresponding ester or amide of 6,11-dihydro-11- oxodibenz[b,e]oxepin-2-acetic acid with a suitable Wittig reagent, in the presence of a base in a reaction medium comprising an organic solvent.