The natural acylphloroglucinol myrtucommulone A (1) inhibits microsomal prostaglandin E2 synthase (mPGES)-1 and 5-lipoxygenase (5-LO), and induces apoptosis of cancer cells. Starting from 1 as lead, 28 analogues were synthesized following a straightforward modular strategy with high yielding convergent steps. Major structural variations concerned (I) replacement of the syncarpic acid moieties by dimedone
The Biomimetic Total Syntheses of the Antiplasmodial Tomentosones A and B
作者:Xiao Zhang、Chunmao Dong、Guiyun Wu、Luqiong Huo、Yunfei Yuan、Yingjie Hu、Hongxin Liu、Haibo Tan
DOI:10.1021/acs.orglett.0c02943
日期:2020.10.16
The first biomimetic totalsyntheses of natural phloroglucinols tomentosones A and B and their analogues have been accomplished. The synthetic strategy primarily referred to the potential biosynthetic precursors and their possible sequence of segments assembly by chemological evolution of the structural entities and enabled rapid access of the titled compounds in a practical fashion.
首次仿生全合成天然间苯三酚 tomentosones A 和 B 及其类似物。合成策略主要是指潜在的生物合成前体及其通过结构实体的化学进化可能组装的片段序列,并能够以实用的方式快速获取标题化合物。
Structural optimization and antibacterial evaluation of rhodomyrtosone B analogues against MRSA strains
Methicillin-resistantStaphylococcusaureus (MRSA) infections are well-known as a significant global health challenge. In this study, twenty-two congeners of the natural antibiotic rhodomyrtosone B (RDSB) were synthesized with the aim of specifically enhancing the structural diversity through modifying the pendant acyl moiety. The structure–activity relationship study against various MRSA strains revealed
Methicillin-resistant Staphylococcus aureus (MRSA) poses a serious threat to global public health, because it exhibits resistance to existing antibiotics and therefore high rates of morbidity and mortality. In this study, twenty-one natural product-based acylphloroglucinol congeners were synthesized, which possessed different side chains. Antibacterial screening against MRSA strains revealed that acyl