申请人:PFIZER INC.
公开号:EP0058071A2
公开(公告)日:1982-08-18
A process for preparing pirbuterol, or a pharmaceutically acceptable acid addition salt thereof, which comprise the solvolysis of a compound of the formula:-
wherein Y is benzyl or CN3CO-, or, alternatively, when Y is benzyl, a combination of solvolysis and hydrogenolysis of the compound (VIII), followed by, optionally, conversion of the pirbuterol into a pharmaceutically acceptable acid addition salt by reaction with a suitable acid. Intermediate (VIII) is also covered per se.
一种制备吡布特罗或其药学上可接受的酸加成盐的工艺,包括溶解式为
其中 Y 为苄基或 CN3CO-,或者,当 Y 为苄基时,将化合物 (VIII) 溶解和氢解相结合,然后通过与适当的酸反应将 pirbuterol 转化为药学上可接受的酸加成盐。中间体(VIII)本身也包括在内。