Process and intermediates for the preparation of...

Details Process and intermediates for the preparation of... Process and intermediates for the preparation of...

C - Chemistry, Metallurgy

07

D

C07D 405/06 (2006.01) C07D 233/90 (2006.01) C07D 471/04 (2006.01)

Patent

CA 2396028

The invention relates to compounds of formula (2) in which R1, R2, R3 and R4 have the meanings indicated in the description, their preparation and their further reaction to give compounds of formula (1), in which A1, A2 and R4 have the meanings indicated in the description. The compounds of the formula (1) are valuable intermediates for the preparation of medicaments.

L'invention concerne des composés représentés par la formule générale (2), dans laquelle R1, R2, R3 et R4 représentent des éléments décrits dans la description, leur préparation et leur mise en réaction pour obtenir des composés représentés par la formule générale (1), dans laquelle A¿1?, A¿2? et R4 représentent des éléments décrits dans la description. Les composés représentés par la formule générale (1) sont des intermédiaires précieux pour la préparation de médicaments.

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