Evaluation of Synthesized Ester or Amide Coumarin Derivatives on Aromatase Inhibitory Activity
摘要:
Aromatase inhibitors are effective for the treatment of diseases such as breast cancer, which has led to an increase in their demand. However, only a limited number of aromatase inhibitor drugs are currently being marketed. In addition, considering the important aspect of drug resistance, the development of newer drug types is required. We have been developing inhibitors with backbone structures that differ from existing aromatase inhibitors. In this regard, we previously reported that diethylaminocoumarin dimers and thiazolyl coumarin derivatives possess strong aromatase inhibiting capabilities. In this study, we further examined the structure activity relationships of coumarin derivatives synthesized from thiazolyl coumarin derivatives and their aromatase inhibiting capabilities. Consequently, amide coumarin N-benzhydry1-7-(diethylamino)2-oxo-2H-chromene-3-carboxamide (IC50 values 4.5 mu M) is inhibitor of aromatase. This inhibitor was found to be comparable aromatase inhibitory activity to the 1st generation aromatase inhibitor aminoglutethimide (3.2 mu M). Substitution of the amide group on the amide coumarin derivative affects the aromatase inhibiting activity. Our findings suggest that the structure of each substituent changes the orientation of the compound in the active site of aromatase, thus creating a difference in their activities.
Mono-acylation of a polyamine-β-cyclodextrin based on guest mediated acyl migration
作者:Rodolfo F. Gómez-Biagi、Mark Nitz
DOI:10.1039/c1cc12646f
日期:——
The S â N acylation rates of thioester functionalized coumarins on heptakis-[6-deoxy-6-(2-aminoethylsulfanyl)]-β-cyclodextrin were measured. A high yield of mono-acylation was achieved with products that form self-inclusion compounds. The differential fluorescence response of the functionalized cyclodextrins upon binding biomacromolecules shows the potential of the constructs as probes.
Synthesis of phosphatidylcholine analogues derived from glyceric acid: a new class of biologically active phospholipid compounds
作者:Renato Rosseto、Celize M. Tcacenco、Radha Ranganathan、Joseph Hajdu
DOI:10.1016/j.tetlet.2008.03.084
日期:2008.5
Synthesis of a new class of phosphatidylcholine analogues derived from glycericacid is reported for spectroscopic studies of phospholipases and conformation of phospholipid side-chains in biological membranes, using fluorescence resonance energy transfer (FRET) techniques.
Synthesis of phospholipids on a glyceric acid scaffold: design and preparation of phospholipase A2 specific substrates
作者:Renato Rosseto、Joseph Hajdu
DOI:10.1016/j.tet.2014.03.054
日期:2014.5
Synthesis of a new series of phospholipid analogues to serve as activity-based probes of secretory phospholipaseA2 enzymes is reported. The synthesis is based upon (1) preparation of long-chain esters and amides of glyceric acid, followed by (2) regioselective derivatization of the diol function of the molecule to achieve phosphorylation at the primary hydroxyl group, and to introduce the incipient
合成了一系列新的磷脂类似物,用作分泌型磷脂酶 A 2酶的活性探针。该合成基于 (1) 甘油酸的长链酯和酰胺的制备,然后 (2) 分子的二醇官能团的区域选择性衍生化以实现伯羟基的磷酸化,并引入初始的sn -目标化合物的2-酯基团。该序列已被证明允许掺入荧光、顺磁性和氧化还原活性报告基团,从而产生适用于检测和测量酶活性的磷脂类似物,以开发高度特异性、实时的磷脂酶 A 2光谱分析酶,以及跟踪水解产物的代谢归宿。该合成方法具有很大的灵活性,为其他磷脂代谢酶的活性探针的设计和合成开辟了道路。