[EN] A NEW AND IMPROVED PROCESS FOR THE PREPARATION OF IBANDRONATE SODIUM MONOHYDRATE [FR] PROCÉDÉ NOUVEAU ET AMÉLIORÉ DE PRÉPARATION D'IBANDRONATE DE SODIUM MONOHYDRATÉ
PROCESS FOR MAKING 1-HYDROXYALKYLIDENE-1,1-BIPHOSPHONIC ACIDS
申请人:BARTL Jiri
公开号:US20100010258A1
公开(公告)日:2010-01-14
Synthesis of biphosphonate compounds can be advantageously carried out in a solvent/diluent comprising a compound of formula (3)
wherein R is hydrogen or a C1-C6 alkyl group; each of R1 is a C1-C6 alkyl group or both R1 groups are linked to form a C1-C3 alkylene group; and R2 is hydrogen, a C1-C6 alkyl group, a C1-C6 alkoxy group, or is linked together with R to form a C3-C7 carbon ring.
The invention relates to a novel multi step synthesis of 3-(N-methyl-N-pentyl) amino-1-hydroxypropane-1,1-diphosphonic acid, monosodium salt, monohydrate, of the formula
The present invention relates to a new polymorph crystal form of 3-(N-methyl-N-pentyl)amino-1-hydroxypropane-1 1-diphosphonic acid monosodium salt monohydrate (Ibandronate) with the following formula
[EN] PROCESS FOR THE PREPARATION OF 3-(N-METHYL-N-PENTYL)AMINO-1-HYDROXYPROPANE-1,1-DIPHOSPHONIC ACID SALT OR DERIVATIVES THEREOF<br/>[FR] PROCÉDÉ DE SYNTHÈSE DU SEL D'ACIDE 3-(N-MÉTHYL-N-PENTYL)AMINO-1-HYDROXYPROPANE-1,1-DIPHOSPHONIQUE OU DE SES DÉRIVÉS
申请人:PHARMATHEN SA
公开号:WO2012007021A1
公开(公告)日:2012-01-19
The present invention relates to an improved process for the preparation of 3-(N-methyl-N- pentyl)amino-1-hydroxypropane-1,1-diphosphonic acid, monosodium salt, or its derivatives, in substantially pure crystalline form.