Synthesis and biological evaluation of semi-synthetic albocycline analogs.

Synthesis and biological evaluation of semi-synthetic albocycline analogs.
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DOI:
10.1016/j.bmcl.2020.127509
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发表时间:
2020-11-01
影响因子:
2.7
通讯作者:
Andrade RB
Andrade RB
中科院分区:
医学4区
文献类型:
--
作者:
Daher SS;Franklin KP;Scherzi T;Dunman PM;Andrade RB

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Albocycline (ALB)是一种独特的大内酯类天然产物,对耐甲氧西林金黄色葡萄球菌(MRSA)、万古霉素中间体(VISA)和耐万古霉素金黄色葡萄球菌(VRSA)具有强效的窄谱活性(MIC = 0.5 ~ 1.0 μg/mL)。本文描述了通过在三个特定位点:C2-C3烯酮,C4的叔甲醇和烯丙基C16甲基上功能化而衍生的一系列新型类似物的合成和评价。通过最低抑制浓度测定(mic)对结构-活性关系(SAR)的探索表明,C4酯类似物6的效力是ALB的两倍,ALB代表了一类可以进一步研究以解决多重耐药病原体的先导化合物。
Albocycline (ALB) is a unique macrolactone natural product with potent, narrow-spectrum activity against methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-intermediate (VISA), and vancomycin-resistant S. aureus (VRSA) strains (MIC = 0.5–1.0 μg/mL). Described herein is the synthesis and evaluation of a novel series analogs derived from albocycline by functionalization at three specific sites: the C2-C3 enone, the tertiary carbinol at C4, and the allylic C16 methyl group. Exploration of the structure-activity relationships (SAR) by means of minimum inhibitory concentration assays (MICs) revealed that C4 ester analog 6 was twice as potent as ALB, which represents a class of lead compound that can be further studied to address multi-drug resistant pathogens.
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