Synthesis of 5′-Fluoro-5′-deoxy-and 5′-Amino-5′-Deoxytoyocamycin and Sangivamycin and Some Related Derivatives
摘要:
A series of 5'-substituted analogs of toyocamycin were prepared by condensation of silylated 4-amino-6-bromo-5-cyanopyrrolo[2,3-d]pyrimidine with protected 5-azidod-deoxy- or 5-fluoro-5-deoxyribofuranose followed by debromination and deblocking. Alternatively, 5'-azido-5'-deoxytoyocamycin was prepared by azidation of toyocamycin. Conversion of the 5-nitrile function of the toyocamycin derivatives into a carboxamide or a thiocarboxamide gave the corresponding analogs of sangivamycin or thiosangivamycin while reduction of the 5'-azido-5'-deoxy nucleosides provided 5'-amino-5'-deoxy derivatives.
Antibiotic natural product hunanamycin A: Lead identification towards anti-Salmonella agents
作者:Rahul D. Shingare、John B. MacMillan、D. Srinivasa Reddy
DOI:10.1016/j.ejmech.2022.114245
日期:2022.6
Design and synthesis of library of compounds around the antibiotic natural product hunanamycin A scaffold and their biological evaluation are disclosed here. These efforts resulted in identification of a lead compound 36, which is a structurally simplified analogue of original hunanamycin A with impressive activity against Salmonella enterica and possesses other druggable properties. In addition, no
本文公开了抗生素天然产物 hunanamycin A 支架周围化合物库的设计和合成及其生物学评价。这些努力导致了先导化合物36的鉴定,它是原始 hunanamycin A 的结构简化类似物,具有令人印象深刻的抗肠沙门氏菌活性,并具有其他可成药特性。此外,在瑞士白化病小鼠中未观察到化合物36的急性经口毒性,剂量高达 2 g/kg。它有可能被开发用于治疗由沙门氏菌引起的食物感染。