carbohydrate has been identified as an environmentally benign C2 synthon in the preparation of synthetically useful 2-hydroxymethylbenzimidazole derivatives by coupling with 1,2-phenylenediamines. The pivotal features of this method include metal-free conditions, short time, good functional group tolerance, gram scale feasibility and the synthesis of benzimidazole fused 1,4-oxazine.
D-果糖是一种生物质衍生的碳水化合物,在通过与 1,2-苯二胺偶联制备合成有用的 2-羟甲基苯并咪唑衍生物时,已将其鉴定为环境无害的 C 2合成子。该方法的关键特征包括无金属条件、时间短、官能团耐受性好、克级可行性和苯并咪唑稠合 1,4-恶嗪的合成。
<i>meso</i>-(2-Benzimidazolyl)-substituted BODIPYs: Synthesis, structures and spectroscopic properties
作者:Hu Gao、Chenhong Li、Zhen Shen
DOI:10.1142/s1088424619501104
日期:2020.1
meso-(2-benzimidazolyl)-substituted boron dipyrromethene (BODIPY) derivatives 3a–3c and 4 have been synthesized and characterized. The absorption and fluorescence bands of 3a are bathochromically shifted by 36 nm and 61 nm, respectively, compared with those of the meso-phenyl BODIPY in toluene. More importantly, the fluorescence quantum yields of these meso-(2-benzimidazolyl)-substitutedBODIPYs (up to 0.45 in
The invention provides a topoisomerase poison of formula I:
1
wherein R
1
-R
8
have any of the meanings defined in the specification, or a pharmaceutically acceptable salt thereof, as well as pharmaceutical compositions comprising a compound of formula I or a salt thereof, intermediates useful for preparing a compound of formula I, and therapeutic methods comprising administering a compound of formula I or a salt thereof.
本发明提供了一种式 I 的拓扑异构酶毒物:
1
其中 R
1
-R
8
或其药学上可接受的盐,以及包含式 I 化合物或其盐的药物组合物、用于制备式 I 化合物的中间体和包括施用式 I 化合物或其盐的治疗方法。