Natural Abenquines and Their Synthetic Analogues Exert Algicidal Activity against Bloom-Forming Cyanobacteria
作者:Amalyn Nain-Perez、Luiz Cláudio Almeida Barbosa、Célia Regina Álvares Maltha、Giuseppe Forlani
DOI:10.1021/acs.jnatprod.6b00629
日期:2017.4.28
cyanobacterial growth in the 1 to 100 μM range. To further elucidate their biological significance, the synthesis of several analogues (4f–h, 5a–h) allowed us to identify some steric and electronic requirements for bioactivity. Replacing the acetyl by a benzoyl group in the quinone core and also changing the amino acid moiety with ethylpyrimidinyl or ethylpyrrolidinyl groups resulted in analogues 25-fold more
苯甲醚是一些链霉菌产生的天然醌,显示出在1至100μM范围内抑制蓝细菌生长的能力。为了进一步阐明其生物学意义,几种类似物(4f – h,5a – h)的合成使我们能够确定一些空间和电子上对生物活性的要求。用醌核心中的苯甲酰基取代乙酰基,并用乙基嘧啶基或乙基吡咯烷基取代氨基酸部分,所产生的类似物的效价比天然苯醌高25倍。两种最有效的类似物通过IC 50抑制了所测试的五种蓝细菌菌株的增殖值范围从0.3到3μM。这些化合物对于开发控制蓝藻水华的有效策略可能是有用的线索。