4'-Hydroxy-3-methoxyflavones with potent antipicornavirus activity
作者:Nadine De Meyer、Achiel Haemers、Lallan Mishra、Hrishi Kesh Pandey、L. A. C. Pieters、Dirk A. Vanden Berghe、Arnold J. Vlietinck
DOI:10.1021/jm00106a039
日期:1991.2
4'-Hydroxy-3-methoxyflavones are natural compounds with known antiviral activities against picornaviruses such as poliomyelitis and rhinoviruses. In order to establish a structure-activity relationship a series of analogues were synthesized, and their antiviral activities and cytotoxicities were compared with those of flavones from natural origin. The 4'-hydroxyl and 3-methoxyl groups, a substitution in the 5 position and a polysubstituted A ring appeared to be essential requirements for a high activity. The most interesting compound was 4',7-dihydroxy-3-methoxy-5,6-dimethylflavone possessing in vitro TI99 values of > 1000 and > 200 against poliovirus type 1 and rhinovirus type 15, respectively. This compound was also active against other rhinovirus serotypes (2, 9, 14, 29, 39, 41, 59, 63, 70, 85, and 89) tested, having MIC50 values ranging from 0.016 to 0.5-mu-g/mL. Finally in contrast to quercetin it showed to be not mutagenic in concentrations up to 2.5 mg in the Ames test.
DE, MEYER NADINE;HAEMERS, ACHIEL;MISHRA, LALLAN;PANDEY, HRISHI-KESH;PIETE+, J. MED. CHEM., 34,(1991) N, C. 736-746
Design of Development Candidate eFT226, a First in Class Inhibitor of Eukaryotic Initiation Factor 4A RNA Helicase
作者:Justin T. Ernst、Peggy A. Thompson、Christian Nilewski、Paul A. Sprengeler、Samuel Sperry、Garrick Packard、Theodore Michels、Alan Xiang、Chinh Tran、Christopher J. Wegerski、Boreth Eam、Nathan P. Young、Sarah Fish、Joan Chen、Haleigh Howard、Jocelyn Staunton、Jolene Molter、Jeff Clarine、Andres Nevarez、Gary G. Chiang、Jim R. Appleman、Kevin R. Webster、Siegfried H. Reich
DOI:10.1021/acs.jmedchem.0c00182
日期:2020.6.11
component of the eIF4F complex, which regulates cap-dependent protein synthesis. The flavagline class of naturalproducts (i.e., rocaglamide A) has been shown to inhibit protein synthesis by stabilizing a translation–incompetent complex for select messenger RNAs (mRNAs) with eIF4A. Despite showing promising anticancer phenotypes, the development of flavagline derivatives as therapeutic agents has been hampered