derivatives. The synthetic utility of the one-pot sequence was demonstrated by obtaining convenient access to coumarin-annelated benzopyrans. The reaction scope for the transformation was found to be fairly broad, affording good yields of a wide range of flavone- or coumarin-fused benzopyran motifs, which are privileged structures in many biologically active compounds.
通过
黄酮衍
生物的C–H功能化,已经实现了实现串联C–H烯基化/ C–O环化的有效方法。通过方便地获得
香豆素退火的苯并
吡喃,证明了一锅法序列的合成效用。发现该转化的反应范围相当宽,提供了广泛的
黄酮-或
香豆素-融合的苯并
吡喃基序的良好产率,其是许多
生物活性化合物中的优先结构。