Novel semisynthetic antibiotics from caprazamycins A–G: caprazene derivatives and their antibacterial activity
作者:Yoshiaki Takahashi、Masayuki Igarashi、Toshiaki Miyake、Hiromi Soutome、Kanae Ishikawa、Yasuhiro Komatsuki、Yoshiko Koyama、Naoko Nakagawa、Seiko Hattori、Kunio Inoue、Norio Doi、Yuzuru Akamatsu
DOI:10.1038/ja.2013.9
日期:2013.3
no antibacterial activity, the antibacterial activity was restored for its 1'''-alkylamide, 1'''-anilide and 1'''-ester derivatives. Compounds 4b (CPZEN-45), 4d (CPZEN-48), 4f and 4g (CPZEN-51) exhibited more potent activities against Mycobacterium tuberculosis and M. avium complex strains than CPZ-B. These results suggest that caprazene would be a good precursor from which novel semisynthetic antibacterial
从新型抗分枝杆菌药的筛选中分离出的卡扎霉素霉素(CPZs)AG混合物经过酸性处理,可以高收率获得卡扎苯,这是CPZs的核心结构。对所得的吡嗪进行化学修饰以得到其各种衍生物。研究了辣椒碱衍生物对几种分枝杆菌属和致病性革兰氏阳性和革兰氏阴性细菌的构效关系。尽管Caprazene没有显示抗菌活性,但其1'''-烷基酰胺,1'''-苯胺和1'''-酯衍生物的抗菌活性得以恢复。与CPZ-B相比,化合物4b(CPZEN-45),4d(CPZEN-48),4f和4g(CPZEN-51)表现出更强的抗结核分枝杆菌和鸟分枝杆菌复杂菌株的活性。