EGA 1通过抑制水泡运输来防止多种病毒和细菌毒素进入哺乳动物细胞。1的细胞靶标是未知的,进行了结构-活性关系研究以开发用于靶标鉴定的策略。鉴定出具有中纳米分子效力的化合物(2),并合成了三个光亲和标记(3-5)。对于该系列,在获得成功的光标记事件方面,苯叠氮基部分的预期光化学是比光探针的IC50更重要的因素。虽然3是该系列中最有效的可逆抑制剂,但在紫外线照射后,它没有为细胞提供抗炭疽致死毒素(LT)的保护。相反,在标准分析中生物活性较弱的5
The incidence of life-threatening fungal infections is increasing dramatically. In an attempt to develop novel antifungal agents, our previously synthesized phenoxyalkylpiperazine triazole derivatives were used as lead structures for further optimization. By means of structure-based bioisosterism, triazolone was used as a new bioisostere of oxygen atom. This type of bioisosteric replacement can improve the water solubility without loss of hydrogen-bonding interaction with the target enzyme. A series of triazolone-containing triazoles were rationally designed and synthesized. As compared with fluconazole, several compounds showed higher antifungal activity with broader spectrum, suggesting their potential for further evaluations. (C) 2011 Elsevier Masson SAS. All rights reserved.
Structure–Activity Relationship of Semicarbazone EGA Furnishes Photoaffinity Inhibitors of Anthrax Toxin Cellular Entry
作者:Michael E. Jung、Brian T. Chamberlain、Chi-Lee C. Ho、Eugene J. Gillespie、Kenneth A. Bradley
DOI:10.1021/ml400486k
日期:2014.4.10
unknown, and a structure-activity relationship study was conducted in order to develop a strategy for target identification. A compound with midnanomolar potency was identified (2), and three photoaffinity labels were synthesized (3-5). For this series, the expected photochemistry of the phenyl azide moiety is a more important factor than the IC50 of the photoprobe in obtaining a successful photolabeling
EGA 1通过抑制水泡运输来防止多种病毒和细菌毒素进入哺乳动物细胞。1的细胞靶标是未知的,进行了结构-活性关系研究以开发用于靶标鉴定的策略。鉴定出具有中纳米分子效力的化合物(2),并合成了三个光亲和标记(3-5)。对于该系列,在获得成功的光标记事件方面,苯叠氮基部分的预期光化学是比光探针的IC50更重要的因素。虽然3是该系列中最有效的可逆抑制剂,但在紫外线照射后,它没有为细胞提供抗炭疽致死毒素(LT)的保护。相反,在标准分析中生物活性较弱的5
Synthesis and biological activities of novel artemisinin derivatives as cysteine protease falcipain-2 inhibitors
A series of novel artemisinin derivatives were synthesized from artemisinin and different anilines. All compounds were obtained as β-isomers. The target compounds were evaluated for inhibition activity against Plasmodium falciparum falcipain-2 in vitro, and most of them exhibited potent inhibition in the low micromolar range and proved to be new types of falcipain-2 inhibitors.