Chiral Recognition of Carboxylates by a Static Library of Thiourea Receptors with Amino Acid Arms
摘要:
Chiral recognition is based on a large network of very subtle interactions whose outcome is difficult to predict. A combinatorial approach is therefore the most suitable to search for the most efficient receptor and obtain a structure-enantioselectivity correlation. We synthesized a set of 12 receptors constructed with 1,9-diaminoantracene and alpha-amino acid esters, linked via thiourea groups. The association constants and enantioselectivities for the complexes with mandelate and N-acetylphenylalanine were determined by competitive NMR titrations. Association constants quite regularly depend on the substituents in the receptor structure, but the distribution of enantioselectivities across the library could not easily be rationalized.
[EN] METHODS FOR TREATING FILOVIRIDAE VIRUS INFECTIONS<br/>[FR] MÉTHODES POUR LE TRAITEMENT D'INFECTIONS VIRALES À FILOVIRIDAE
申请人:GILEAD SCIENCES INC
公开号:WO2016069826A1
公开(公告)日:2016-05-06
Provided are compounds, methods, and pharmaceutical compositions for treating Filoviridae vims infections by administering ribosides, riboside phosphates and prodrugs thereof, of Formula (IV): The compounds, compositions, and methods provided are particularly useful for the treatment of Marburg virus, Ebola virus and Cueva virus infections.
METHODS FOR TREATING ARENAVIRIDAE AND CORONAVIRIDAE VIRUS INFECTIONS
申请人:Gilead Sciences, Inc.
公开号:US20170071964A1
公开(公告)日:2017-03-16
Provided are methods for treating Arenaviridae and Coronaviridae virus infections by administering nucleosides and prodrugs thereof, of Formula I:
wherein the 1′ position of the nucleoside sugar is substituted. The compounds, compositions, and methods provided are particularly useful for the treatment of Lassa virus and Junin virus infections.
Synthesis and Biological Evaluation of a Series of Novel Celastrol Derivatives with Amino Acid Chain
作者:Chaohai Pang、Jinhui Luo、Chunhua Liu、Xuejin Wu、Dingyong Wang
DOI:10.1002/cbdv.201800059
日期:2018.5
The synthesis of celastrol analogues containing amino acid ester at the C(29) position and their evaluation for cytotoxic activities in vitro were reported. The MTT test showed that a set of derivatives with lower IC50 values than that of the positive control group cisplatin and the parent compound celastrol, which exhibited greater antiproliferativeactivities. The most potent title compounds 2a and
报道了在 C(29) 位置含有氨基酸酯的 Celastrol 类似物的合成及其对体外细胞毒活性的评价。MTT试验表明,一组衍生物的IC50值低于阳性对照组顺铂和母体化合物celastrol,表现出更大的抗增殖活性。最有效的标题化合物 2a 和 2e 在体外对 HeLa 和 A549 细胞系表现出细胞毒活性,IC50 值分别为 0.371 和 0.237 μm、0.235 和 0.109 μm。细胞凋亡实验表明2a和2e可以在低浓度下诱导A549细胞凋亡。这些结果表明,2a 和 2e 可能有希望作为抗肿瘤剂进行进一步研究。