夫西地酸 (FA) 是一种强效甾体抗生素,已在欧洲使用了 60 多年,用于治疗由革兰氏阳性病原体引起的各种感染。尽管在临床上取得了成功,但 FA 需要显着增加剂量(第一天 3 g,随后几天 1.2 g)以最小化耐药性,因为 FA 显示出高耐药频率,并且观察到耐药细菌的最小抑制浓度有很大变化。尽管努力在这些方面进行改进,但所有先前构建的 FA 衍生物对革兰氏阳性菌的抗菌活性都比母体天然产物更差。在这里,我们报告了一种新型 FA 类似物的产生,该类似物对金黄色葡萄球菌( S. aureu s) 和金黄色葡萄球菌的临床分离株具有同等效力。与 FA 相比,粪肠球菌( E. faecium ) 以及改进的体外抗性谱。重要的是,这种新化合物在软组织小鼠感染模型中对金黄色葡萄球菌FA 抗性菌株显示出功效。这项工作描绘了有效抗生素活性所必需的 FA 的结构特征,并证明可以改善该支架和靶标的耐药性。
Structure-activity relationship analyses of fusidic acid derivatives highlight crucial role of the C-21 carboxylic acid moiety to its anti-mycobacterial activity
Fusidic acid (FA) is a potent congener of the fusidane triterpenoid class of antibiotics. Structure-activityrelationship (SAR) studies suggest the chemical structure of FA is optimal for its antibacterial activity. SAR studies from our group within the context of a drug repositioning approach in tuberculosis (TB) suggest that, as with its antibacterial activity, the C-21 carboxylic acid group is indispensable
Synthesis and cytotoxic activity of 3-amino substituted fusidane triterpenoids
作者:Elena V. Salimova、Elena V. Tret’yakova、Lyudmila V. Parfenova
DOI:10.1007/s00044-019-02445-y
日期:2019.12
selective effect on five cell lines of leukemia: HL-60, K-562, MOLT-4, RPMI-8226, and SR, inhibiting their growth from 70% to complete death of cancer cells. Methylfusidate derivative with a spermine fragment was shown to exhibit the widest spectrum of antiproliferative action among the obtained compounds, inhibiting the growth of leukemia, NSC lung cancer, colon cancer, and melanoma cell lines of 68–92%
Indole Derivatives of Fusidane Triterpenoids: Synthesis and the Antibacterial Activity
作者:Elena V. Salimova、Aygul A. Magafurova、Elena V. Tretyakova、Olga S. Kukovinets、Lyudmila V. Parfenova
DOI:10.1007/s10593-020-02733-1
日期:2020.6
New indolederivatives of fusidic acid were synthesized by using the Fischer reaction. The obtained compounds were screened in vitro for antibacterial activity and were found to inhibit the growth of Staphylococcus aureus (MRSA, strain ATCC 43300) at concentrations comparable to fusidic acid. The obtained indolederivatives of fusidic acid were also characterized by relatively low cytotoxicity and
Fusidic Acid Derivatives. I. Relationship between Structure and Antibacterial Activity
作者:W. O. Godtfredsen、W. von Daehne、L. Tybring、S. Vangedal
DOI:10.1021/jm00319a004
日期:1966.1
[EN] ANTIBIOTICS WITH IMPROVED DRUG RESISTANCE PROFILE<br/>[FR] ANTIBIOTIQUES AYANT UN PROFIL DE RÉSISTANCE AUX MÉDICAMENTS AMÉLIORÉ
申请人:[en]THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
公开号:WO2022155290A1
公开(公告)日:2022-07-21
Novel Fusidic Acid (FA) based compounds that have equivalent potency against clinical isolates ofStaphylococcus aureus (S. aureus)andEnterococcus faecium (E. faecium)as well as an improved resistance profilein vitrowhen compared to FA. Importantly, the new compounds display efficacy against a FA-resistant strain ofStaphylococcus aureusin a soft-tissue murine infection model. This disclosure delineates the structural features of FA necessary for potent antibiotic activity and demonstrates that the resistance profile can be improved for this scaffold and target.