申请人:——
公开号:US20020115871A1
公开(公告)日:2002-08-22
A process for preparing a compound having PGD
2
antagonism represented by the formula (I), or a pharmaceutically acceptable salt or hydrate thereof, which process comprises reacting an amino alcohol of the formula (II) or its salt with a compound of the formula (III) or its reactive derivative, oxidizing the product with halo oxoacid in the presence of 2,2,6,6-tetramethylpiperidine-1-oxyls, reacting the product with an ylide under the conditions for Wittig reaction, and optionally deprotecting the product.
1
一种制备具有PGD2拮抗作用的化合物(I)或其药学上可接受的盐或水合物的方法,该方法包括将式(II)的氨基醇或其盐与式(III)的化合物或其反应衍生物反应,以2,2,6,6-四甲基哌啶-1-氧自由基的存在下,用卤代氧酸氧化产物,将产物在Wittig反应条件下与叶立德反应,然后可选择性去保护产物。