Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from PCT/US1979/000648external-prioritypatent/WO1981000563A1/en
Application filed by EI Du Pont de Nemours and CofiledCriticalEI Du Pont de Nemours and Co
Publication of ES494434A0publicationCriticalpatent/ES494434A0/es
Publication of ES8106295A1publicationCriticalpatent/ES8106295A1/es
METODO DE PREPARACION DE ESTERES DEL ACIDO PIRIDILOXIFENOXICROTONICO DE FORMULA (I), DONDE W PUDE SER CN O COOR2, SIENDO R2 HIDROGENO, METIL O ETIL. SE HACEN REACCIONAR EN UN DISOLVENTE ORGANICO CANTIDADES EQUIMOLECULARES DEL 4-(3,5-DICLOROPIRIDIN-2-ILOXI)FENOL DE FORMULA (II) Y DE UN DERIVADO DE ACIDO ALQUENOICO SUSTITUIDO DE FORMULA (III), DONDE Z ES CLORO O BROMO, A TEMPERATURAS DE 20 A 100 GC Y A PRESION ATMOSFERICA. LA REACCION SE EFECTUA EN PRESENCIA DE UNA BASE TAL COMO HIDROXIDOS. OPCIONALMENTE SE OBTIENE LA SAL DEL COMPUESTO, AL TRATAR EL PRODUCTO OBTENIDO CON UNA SOLUCION DE UNA SAL DE METAL ALCALINO O ALCALINOTERREO O EFECTUANDO UN INTERCAMBIO CATIONICO. A
ES80494434A1979-08-231980-08-22Un procedimiento para la preparacion de derivados del acido piridiloxifenoxicrotonico.
ExpiredES8106295A1
(es)
Un procedimiento de preparacion de n1nl(-)-2-hidroxi-4-ami- no-butiroiln4-0n2', 6'-diamino-2', 6'-disesoxi-alfa, d-glu- copirano-siln6-0n3"-metilamino-3", 4",6"-tridesoxi-alfa-d- xilohexopiranosiln2-desoxi-estrepamina.