Synthesis and antibacterial activity of 5-methylphenanthridium derivatives as FtsZ inhibitors
作者:Fang Liu、Henrietta Venter、Fangchao Bi、Susan J. Semple、Jingru Liu、Chaobin Jin、Shutao Ma
DOI:10.1016/j.bmcl.2017.06.005
日期:2017.8
5-Methylphenanthridium derivatives were designed, synthesized and evaluated for their in vitro antibacterialactivity and cell division inhibitory activity against various Gram-positive and -negative bacteria. Among them, compounds 5A2, 5B1, 5B2, 5B3, 5C1 and 5C2 displayed the best on-target antibacterialactivity with an MIC value of 4 µg/mL against B. subtilis ATCC9372 and S. pyogenes PS, showing
Synthesis of Quinazolinones, Imidazo[1,2-<i>c</i>
]quinazolines and Imidazo[4,5-<i>c</i>
]quinolines through Tandem Reductive Amination of Aryl Halides and Oxidative Amination of C(sp<sup>3</sup>
)-H Bonds
2-c]quinazolines and imidazo[4,5-c]quinolines. The reaction involves a copper-catalyzed reductiveamination through azidation followed by reduction and oxidative amination of C(sp3)–H bonds of N,N-dimethylacetamide in the presence of TBHP (tert-butylhydroperoxide) as oxidant. The method uses the easily available sodium azide as a nitrogen source and DMA (N,N-dimethylacetamide) as a one-carbon source for the
Synthesis of 3-Substituted and 2,3-Disubstituted Quinazolinones via Cu-Catalyzed Aryl Amidation
作者:Lanting Xu、Yongwen Jiang、Dawei Ma
DOI:10.1021/ol300084v
日期:2012.2.17
Cul/4-hydroxy-L-proline catalyzed coupling of N-substituted o-bromobenzamides with formamide takes place at 80 degrees C, affording 3-substituted quinazolinones directly. Under these conditions other amides that were tested only provided simple coupling products, which can be converted into 2,3-disubstituted quinazolinones via HMDS/ZnCl2 mediated condensative cyclization.