Phosphoramidate protides of five flavones and their antiproliferative activity against HepG2 and L-O2 cell lines
摘要:
A series of flavone-7-phosphoramidate derivatives were synthesized and tested for their antiproliferative activity in vitro against human hepatoma cell line HepG2 and human normal hepatic cell line L-O2. Compound 8d, 16d and 17d, incorporating the amino acid alanine, exhibited high inhibitory activity on HepG2 cell line with IC50 values of 9.0 mu mol/L, 5.5 mu mol/L and 6.6 mu mol/L. The introduction of acyl groups played a pivotal role in the selective inhibition toward human hepatoma HepG2 cells, except for compound 8a, 9a and 16b. Compound 8d, 16d and 17d could significantly induce G2/M arrest in HepG2 cells. Specially, Compound 16d could lead early apoptosis in HepG2 cells. (C) 2016 Elsevier Masson SAS. All rights reserved.
Application of Phosphoramidate ProTide Technology Significantly Improves Antiviral Potency of Carbocyclic Adenosine Derivatives
作者:Christopher McGuigan、Alshaimaa Hassan-Abdallah、Sheila Srinivasan、Yikang Wang、Adam Siddiqui、Susan M. Daluge、Kristjan S. Gudmundsson、Huiqiang Zhou、Ed W. McLean、Jennifer P. Peckham、Thimysta C. Burnette、Harry Marr、Richard Hazen、Lynn D. Condreay、Lance Johnson、Jan Balzarini
DOI:10.1021/jm060776w
日期:2006.11.30
phosphoramidate pronucleotide (ProTide) technology to the antiviral agent carbocyclic L-d4A (L-Cd4A). The phenyl methyl alaninyl parent ProTide of L-Cd4A was prepared by Grignard-mediated phosphorochloridate reaction and resulted in a compound with significantly improved anti-HIV (2600-fold) and HBV activity. We describe modifications of the aryl, ester, and amino acid regions of the ProTide and how these changes
Aryl Phosphoramidates of 5-Phospho Erythronohydroxamic Acid, A New Class of Potent Trypanocidal Compounds
作者:Gian Filippo Ruda、Pui Ee Wong、Vincent P. Alibu、Suzanne Norval、Kevin D. Read、Michael P. Barrett、Ian H. Gilbert
DOI:10.1021/jm1004754
日期:2010.8.26
survival and make it an attractive drug target for the development of new treatments against human African trypanosomiasis. 2,3-O-Isopropylidene-4-erythrono hydroxamate is a potent inhibitor of parasite Trypanosoma brucei 6-phosphogluconate dehydrogenase (6-PGDH), the third enzyme of the pentose phosphate pathway. However, this compound does not have trypanocidal activity due to its poor membrane permeability
A series of 6-hydrazinopurine 2 '-methyl ribonucleosides was synthesized and tested for its inhibitory activity against the hepatitis C virus (HCV). The lack of antiviral activity of these nucleosides was associated with a poor affinity for adenosine kinase, which prompted us to synthesize several of their 5 '-monophosphate prodrugs. Some of these prodrugs exhibited more than 1000-fold improvement in anti-HCV activity when compared to their parent nucleosides (EC50 of 24 mu M vs 92 mu M for the parent). (C) 2007 Elsevier Ltd. All rights reserved.
Synthesis of the Novel Phosphoramidate Derivatives of Chrysin
A novel type of phosphoramidate derivatives of chrysin were synthesized by a facile phosphorylation reaction. The structures of all the newly synthesized chrysin derivatives were confirmed by ESI MS, HR MS, NMR, and IR.