Natural products as sources of new fungicides (III): Antifungal activity of 2,4-dihydroxy-5-methylacetophenone derivatives
作者:Wei Shi、Wen-Jia Dan、Jiang-Jiang Tang、Yan Zhang、Tseden Nandinsuren、An-Ling Zhang、Jin-Ming Gao
DOI:10.1016/j.bmcl.2016.03.073
日期:2016.5
The log P value of these active compounds is ranging from 1.71 to 2.54. Especially, isopropyl ketone 2g (log P 2.27) was found to be the most active to the tested organisms with IC50 values of 17.28–32.32 μg/mL. The results suggest that compound 2g might be a promising candidate in the development of new agrochemical antifungal agents. Preliminary structure–activity relationship (SAR) studies of the acetophenone
合成了一系列新的2,4-二羟基-5-甲基苯乙酮2衍生物,并通过1 H,13 C NMR和ESI-MS进行了表征。通过菌丝体生长抑制率测定法,体外评估了它们对五种重要植物真菌病原体的抗真菌活性,其中包括Cytospora sp。,Glomerella cingulate,Pyricularia oryzaecar,灰葡萄孢菌和solternaria solani。化合物2b – d,2g和2h表现出广谱活性。日志 P这些活性化合物的值在1.71至2.54的范围内。尤其是,发现2g异丙基酮(log P 2.27)对被测生物最具活性,其IC 50值为17.28–32.32μg/ mL。结果表明,化合物2g可能是开发新型农用化学抗真菌剂的有前途的候选物。还讨论了苯乙酮衍生物的初步结构-活性关系(SAR)研究。