申请人:Marom Ehud
公开号:US20130046103A1
公开(公告)日:2013-02-21
The present invention provides several synthetic methods for preparing N-(2-butylbenzofuran-5-yl)-N-(methylsulfonyl)methanesulfonamide, a compound of formula (3), an intermediate in the preparation of Dronedarone. The present invention further provides a process for preparing Dronedarone, comprising the steps of converting 2-butyl-5-bis(methanesulfon)-amidobenzofuran of formula (3) to Dronedarone, wherein the 2-butyl-5-bis(methanesulfon)-amidobenzofuran of formula (3) is prepared by the processes of the present invention.
本发明提供了制备N-(2-丁基苯并呋喃-5-基)-N-(甲磺酰基)甲烷磺酰胺的几种合成方法,该化合物为式(3)中的中间体,用于制备多萘达韦。本发明还提供了一种制备多萘达韦的方法,包括将式(3)中的2-丁基-5-双(甲磺酰)-氨基苯并呋喃转化为多萘达韦的步骤,其中式(3)中的2-丁基-5-双(甲磺酰)-氨基苯并呋喃是通过本发明的方法制备的。