C-2取代的咪唑并[4,5- b ]吡啶的区域选择性合成,利用钯催化的可烯丙基杂环的C–N键形成反应
摘要:
在这封信中,我们报告了利用钯介导的布赫瓦尔德-哈特维格交叉偶联反应快速而轻松地获得C2取代的咪唑并[4,5- b ]吡啶类似物的方法。使用可烯醇化的杂环作为交叉偶联伴侣会导致产生广泛的具有医学相关性的咪唑并[4,5- b ]吡啶类似物。发现Xantphos和Pd(OAc)2对于2-卤代咪唑并[4,5- b ]吡啶与吡啶酮亲核试剂的偶联更有效。还报道了区域选择性的合成2-取代的3 H-咪唑并[4,5- b ]吡啶和1 H-咪唑并[4,5- b ]吡啶的方法。
The present invention is concerned with novel compounds of formula (I) having fundic relaxating activity. The invention further relates to methods for preparing such compounds, pharmaceutical compositions comprising said compounds as well as the use as a medicine of said compounds.