Process for the production of tetrazolylbenzopyrans

Details Process for the production of tetrazolylbenzopyrans Process for the production of tetrazolylbenzopyrans

C - Chemistry, Metallurgy

07

D

C07D 405/04 (2006.01) A61K 31/41 (2006.01) A61P 11/06 (2006.01)

Patent

CA 2276310

A process for the preparation of a compound of structure (I), in which comprises reduction of a compound of formula (II), in which A, R1, R2 and R3 are as defined in the claims, is disclosed.

Procédé de préparation d'un composé ayant la structure (I) dans laquelle A, R<1>, R<2> et R<3> sont tels que définis dans les revendications; ce procédé consiste à réduire un composé de formule (II) dans laquelle A, R<1>, R<2> et R<3> sont tels que définis dans les revendications.

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