[EN] 5-IMINO-13-DEOXY ANTHRACYCLINE DERIVATIVES, THEIR USES, AND PROCESSES FOR PREPARING THEM<br/>[FR] DERIVES 5-IMINO-13-DEOXY DE L'ANTHRACYCLINE LEURS UTILISATIONS ET LEUR PROCEDE DE PREPARATION
申请人:GEM PHARMACEUTICALS, INC.
公开号:WO1999045015A1
公开(公告)日:1999-09-10
(EN) 5-Imino-13-deoxy anthracycline derivatives, medical uses of 5-imino-13-deoxy anthracycline derivatives and methods for preparing 5-imino-13-deoxy anthracycline derivatives.(FR) L'invention porte sur des dérivés 5-imino-13-déoxy de l'anthracycline, leurs utilisations médicales et leurs procédés de préparation.
Compositions and processes for preparing 13-deoxy-anthracyclines
申请人:Walsh M. Gerald
公开号:US20060100421A1
公开(公告)日:2006-05-11
13-benzenesulfonylhydrazone anthracyclines useful in producing improved yields in the synthesis 13-deoxyanthrcyclines, and an improved method of reducing 13-benzene-sulfonylhydrazone anthracyclines to 13-deoxyanthrcyclines wherein the reduction reaction is maintained at temperatures of about 55° C. to 64° C. without stirring or agitation. The reaction is completed with the addition of aqueous bicarbonate which forms the 13-deoxyanthracycline and precipitates. The precipitates are filtered and the precipitate and filtrate are extracted separately with organic solvents. The crude 13-deoxy anthracycline can be converted to 5-imino-13-deoxy anthracycline by reaction with methanolic ammonia. The reaction can also be performed with an acidic pyridinium salt instead of a strong acid so that neutralization of the reaction or extraction of the product is not necessary, thereby facilitating purification.