[EN] PROCESSES FOR THE PREPARATION OF AN INTERMEDIATE IN THE SYNTHESIS OF ELTROMBOPAG<br/>[FR] PROCÉDÉS DE PRÉPARATION D'UN INTERMÉDIAIRE DANS LA SYNTHÈSE DE L'ELTROMBOPAG
申请人:ASSIA CHEM IND LTD
公开号:WO2013049605A1
公开(公告)日:2013-04-04
3'-Amino-2'-hydroxybiphenyl-3-carboxylic acid (BPCA) and related compounds have been prepared using compounds such as: wherein R1 is -H, -Cl or -F; R2 is -Br or -I; and R3 is -H or -N02. BPCA is useful, for example, in the preparation of Eltrombopag.