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Fujisawa Pharmaceutical Co Ltd
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Fujisawa Pharmaceutical Co Ltd
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Publication date
Application filed by Fujisawa Pharmaceutical Co LtdfiledCriticalFujisawa Pharmaceutical Co Ltd
Publication of ES8204430A1publicationCriticalpatent/ES8204430A1/es
Publication of ES498853A0publicationCriticalpatent/ES498853A0/es
Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms
(AREA)
Hydrogenated Pyridines
(AREA)
Abstract
PROCEDIMIENTO PARA LA OBTENCION DE DERIVADOS DE ACIDOS FENIL-ALCANOICOS DE FORMULA (I), EN LA QUE RA ES ALQUILENO OPCIONALMENTE SUSTITUIDO CON UN GRUPO AMINO PROTEGIDO; X ESAO, S, SO O SO2; Y R1 PUEDE SER UNO DE VARIOS TIPOS DE RADICALES. CONSISTE EN LA REACCION DE FORMACION DE ESTER INTRAMOLECULAR DE UN COMPUESTO DE FORMULA (II) EN PRESENCIA DE UN ACIDO O UN DERIVSADO REACTIVO DEL MISMO, FORMULA EN LA QUE R2 ES HIDROGENO, ALQUILO INFERIOR O ACILO; R3 EN ALQUILENO SUSTITUIDO O SIN SUSTITUIR; Y X Y R1 SON LOS MISMOS QUE EN LA FORMULA (I). LA REACCION SE LLEVA A CABO EN UN DISOLVENTE ORGANICO INERTE, CALENTANDO EN CONDICIONES ANHIDRIDAS.
ES498853A1980-01-281981-01-27Un procedimiento para la preparacion de derivados de acidos fenil-alcanoicos.
GrantedES498853A0
(es)