硼酸是中心重要的功能基序和合成前体。可见光诱导的硼酸化可以提供结构多样化的硼酸盐,但一种广泛有效的光催化硼酸化方法可以影响包括强 C-O 键在内的多种底物的硼化,仍然难以实现。在此,我们报告了一种通用的、无金属的可见光诱导光催化硼化平台,该平台能够对苯酚和苯胺、氯芳烃以及其他卤代芳烃的富电子衍生物进行硼化。该反应表现出优异的官能团耐受性,正如一系列结构复杂底物的硼化反应所证明的那样。值得注意的是,该反应是由吩噻嗪催化的,这是一种简单的有机光催化剂,MW< 200通过质子耦合电子转移机制介导了以前无法实现的可见光诱导的苯酚衍生物单电子还原,还原电位为~-3 V vs SCE。机理研究指出了光催化剂-碱相互作用的关键作用。
NITROGEN-CONTAINING HETEROCYCLIC RING SUBSTITUTED DIHYDROARTEMISININ DERIVATIVES AND USE THEREOF
申请人:Shenyang Pharmaceutical University
公开号:US20160009729A1
公开(公告)日:2016-01-14
The present invention belongs to the field of medicinal technique, specifically relates to nitrogen-containing heterocyclic ring-substituted dihydroartemisinin derivatives and their optical isomers according to formula I or II; wherein substituent X, Y, r, R
1
, R
2
, R
3
and R
4
are as defined in the Description. The derivatives and compositions thereof can be prepared into clinically acceptable tablets, capsules, injections, ointments, etc., and thus have pharmaceutical uses in the treatment and/or prevention of cancers.
[EN] DIHYDROARTEMISININ SUBSTITUTED BY NITROGEN CONTAINING HETEROCYCLE DERIVATIVE AND USE THEREOF<br/>[FR] DÉRIVÉ DE DIHYDROARTÉMISININE SUBSTITUÉE PAR HÉTÉROCYCLE CONTENANT DE L'AZOTE ET SON UTILISATION