In the present work a short and convenient route for the synthesis of salmeterol from salicylaldehyde has been developed.
An Efficient and Practical Synthesis of Salmeterol
作者:Yongping Lu、Xinliang Xu、Xingxian Zhang
DOI:10.1080/00304948.2015.1005988
日期:2015.3.4
NOVEL PROCESS
申请人:Gore Vinayak G.
公开号:US20080262267A1
公开(公告)日:2008-10-23
The present invention relates to processes for the preparation of 4-hydroxy-α′-[[[6-(4-phenylbutoxy)hexyl]amino]methyl]-1,3-benzenedimethanol 1-hydroxy-2-naphthoate (salmeterol xinafoate) (12a), the preparation of 4-hydroxy-α′-[[[6-(4-phenylbutoxy)hexyl]amino]methyl]-1,3-benzenedimethanol (salmeterol) (11), the preparation of protected N-[6-(4-phenylbutoxy)hexyl]amine intermediates (7), and the preparation of 6-substituted (4-phenylbutoxy)hexane intermediates (5), shown below, wherein X is a leaving group and Pg is a protecting group.