Semisynthesis and biological evaluation of a focused library of unguinol derivatives as next-generation antibiotics
作者:Mahmud T. Morshed、Hang T. Nguyen、Daniel Vuong、Andrew Crombie、Ernest Lacey、Abiodun D. Ogunniyi、Stephen W. Page、Darren J. Trott、Andrew M. Piggott
DOI:10.1039/d0ob02460k
日期:——
In this study, we report the semisynthesis and in vitro biological evaluation of thirty-four derivatives of the fungal depsidone antibiotic, unguinol. Initially, the semisynthetic modifications were focused on the two free hydroxy groups (3-OH and 8-OH), the three free aromatic positions (C-2, C-4 and C-7), the butenyl side chain and the depsidone ester linkage. Fifteen first-generation unguinol analogues
在这项研究中,我们报告了真菌地普西酮抗生素unguinol的三十四个衍生物的半合成和体外生物学评估。最初,半合成修饰的重点是两个游离羟基(3-OH和8-OH),三个游离芳族位置(C-2,C-4和C-7),丁烯基侧链和二甲泼酮酯连锁。合成了15种第一代unguinol类似物,并针对一组细菌,真菌和哺乳动物细胞进行了筛选,以建立unguinol药效团的基本结构活性关系(SAR)。基于SAR研究,我们合成了另外19种第二代类似物,专门旨在提高药效团的抗菌效力。体外对这些化合物的抗菌活性测试表明,3- O-(2-氟苄基)牛尿酚和3 - O-(2,4-二氟苄基)牛尿酚对甲氧西林敏感和耐甲氧西林金黄色葡萄球菌(MIC 0.25-1 μgmL -1)并有望在体内进一步发展。