[EN] TRICYCLIC HETEROCYCLES USEFUL AS DIPEPTIDYL PEPTIDASE-IV INHIBITORS<br/>[FR] HÉTÉROCYCLES TRICYCLIQUES UTILES COMME INHIBITEURS DE LA DIPEPTIDYL PEPTIDASE IV
申请人:SCHERING CORP
公开号:WO2012078448A1
公开(公告)日:2012-06-14
The present invention is directed to novel tricyclic heterocycles of structural formula I which are inhibitors of the dipeptidyl peptidase-IV enzyme and which are useful in the treatment or prevention of diseases in which the dipeptidyl peptidase-IV enzyme is involved, such as diabetes and particularly Type 2 diabetes. The invention is also directed to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which the dipeptidyl peptidase-IV enzyme is involved. I
[EN] PROCESS AND INTERMEDIATES FOR THE PREPARATION OF LINAGLIPTIN<br/>[FR] PROCESSUS ET INTERMÉDIAIRES POUR LA PRÉPARATION DE LINAGLIPTINE
申请人:CHEMELECTIVA S R L
公开号:WO2015067539A1
公开(公告)日:2015-05-14
The present invention relates to a process for the synthesis of Linagliptin and intermediates useful for its preparation.
本发明涉及一种用于合成利那格列普汀及其制备有用的中间体的方法。
Process for the preparation of Linagliptin
申请人:Dipharma Francis S.r.l.
公开号:EP2468749A1
公开(公告)日:2012-06-27
The present invention relates to processes for the preparation of 8-(3R)-3-aminopiperidinyl)-7-butyn-2-yl-3-methyl-1-(4-methyl-quinazolin-2-ylmethyl)-3,7-dihydropurine-2,6-dione and novel intermediates useful in its synthesis.
The present invention relates to processes for the preparation of 8-(3R)-3-aminopiperidinyl)-7-butyn-2-yl-3 -methyl-1-(4-methyl-quinazolin-2-ylmethyl)-3,7-dihydropurine-2,6-dione and novel intermediates useful in its synthesis.
[EN] IMPROVED PROCESS FOR PREPARATION OF PURE LINAGLIPTIN<br/>[FR] PROCÉDÉ AMÉLIORÉ POUR LA PRÉPARATION DE LINAGLIPTINE PURE
申请人:REDDYS LAB LTD DR
公开号:WO2013098775A1
公开(公告)日:2013-07-04
The present application provides a process for preparation of Linagliptin reacting (R)-piperidine-3-amine of Formula II or an acid addition salt thereof with 1-[(4-methyl- quinazolin-2-yl)methyl]-3-methyl-7-(2-butyn-1-yl)-8-bromoxanthine of Formula III in the presence of a suitable base in an inert organic solvent.