A Green and Facile Approach for Synthesis of Nitro Heteroaromatics in Water
摘要:
A convenient and green method for the oxidation of nitrogen-rich heterocyclic amines to nitro-substituted heteroaromatics using potassium peroxymonosulfate (2KHSO(5)center dot ICHSO4 center dot K2SO4, Oxone) in water was developed. This method has several advantages over previous methods: operational simplicity, safety, inexpensive reagents, the use of H2O as the sole solvent, and mild conditions. The utility of the present oxidative system was demonstrated by the synthesis of the important energetic compounds 3,4,5-trinitro-1H-pyrazole (TNP) and 5-amino-3-nitro-1H-1,2,4-triazole (ANTA).
Compounds having the following formula (I) and methods of their use and preparation are disclosed:
具有以下化学式(I)的化合物以及它们的使用和制备方法已被披露:
Benzimidazole derivatives and their use as protein kinases inhibitors
申请人:Berdini Valerio
公开号:US20070135477A1
公开(公告)日:2007-06-14
The invention provides compounds of the formula (1):
The compounds have activity against cyclin depdenent kinases, glycogen synthase kinase and Auroa kinases and are therefore useful to treat cancer and viral diseases.
Benzimidazole derivatives and their use as protein kinase inhibitors
申请人:Astex Therapeutics, Limited
公开号:US07977477B2
公开(公告)日:2011-07-12
The invention provides compounds of the formula (I):
The compounds have activity against cyclin dependent kinases, glycogen synthase kinase and Auroa kinases and are therefore useful to treat cancer and viral diseases.
BENZIMIDAZOLE DERIVATIVES AND THEIR USE AS PROTEIN KINASE INHIBITORS
申请人:BERDINI Valerio
公开号:US20110224203A1
公开(公告)日:2011-09-15
The invention provides compounds of the formula (I):
The compounds have activity against cyclin dependent kinases, glycogen synthase kinase and Aurora kinases and are therefore useful to treat cancer and viral diseases.
Identification of the
<i>C</i>
‐Glycoside Synthases during Biosynthesis of the Pyrazole‐
<i>C</i>
‐Nucleosides Formycin and Pyrazofurin
作者:Daan Ren、Shao‐An Wang、Yeonjin Ko、Yujie Geng、Yasushi Ogasawara、Hung‐wen Liu
DOI:10.1002/anie.201910356
日期:2019.11.11
linkage between the heterocyclic base and the ribofuranose ring. While the biosynthesis of pseudouridine-C-nucleosides has been studied, less is known about the pyrazole-C-nucleosides such as the formycins and pyrazofurin. Herein, genome screening of Streptomyces candidus NRRL 3601 led to the discovery of the pyrazofurin biosynthetic gene cluster pyf. In vitro characterization of gene product PyfQ demonstrated