发明名称 |
Process for preparing olopatadine and/or a pharmaceutically acceptable salt thereof |
摘要 |
The present invention relates to a process for the preparation of olopatadine and, more particularly, to an improved method of synthesizing olopatadine which comprises reacting a dibenz[b,e]oxepin-11-one derivative of formula (III) and a suitable reagent under Witting condition, and to the intermediate 11-[(Z)-3-(dimethylamino)-propylidene]-6-11-dihydrodibenz[b,e]-oxepin-2-acet-amide p-toluensulfonate salt.; |
申请公布号 |
US8835655(B2) |
申请公布日期 |
2014.09.16 |
申请号 |
US201013147741 |
申请日期 |
2010.02.01 |
申请人 |
Zach System S.p.A |
发明人 |
Guidi Alberto;Chiarello Filippo;Orru' Gianmauro;Verzini Massimo;Cotarca Livius;Kizirian Jean-Claude;Trepat Guixer Elisenda;Marquillas Olondriz Francisco |
分类号 |
C07D313/12 |
主分类号 |
C07D313/12 |
代理机构 |
Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. A process for preparing a compound of formula by reacting a compound of formula and a 3-dimethylamino propyl triphenylphosphonium halide or a salt thereof in the presence of a base under Witting conditions. |
地址 |
Bresso IT |