Synthesis and Biological Evaluation of Fatty Acyl Ester Derivatives of (−)-2′,3′-Dideoxy-3′-thiacytidine
摘要:
A number of fatty acyl derivatives of (-)-2',3'-dideoxy-3'-thiacytidine (lamivudine, 3TC, 1) were synthesized and evaluated for their anti-HIV activity. The monosubstituted 5'-O-fatty acyl derivatives of 3TC (EC50 = 0.2-2.3 mu M) were more potent than the corresponding monosubstituted N-4-fatty acyl (EC50 = 0.4-29.4 mu M) and 5'-O-N-4-disubstituted (EC50 = 72.6 to >154.0 mu M) derivatives of the nucleoside. 5'-O-Myristoyl (16) and 5'-O-12-azidododecanoyl derivatives (17) were found to be the most potent compounds (EC50 = 0.2-0.9 mu M) exhibiting at least 16-36-fold higher anti-HIV activity against cell-free virus than 1 (EC50 = 11.4-32.7 mu M). The EC90 values for 16 against B-subtype and C-subtype clinical isolates were several folds lower than those of 1. The cellular uptake studies confirmed that compound 16 accumulated intracellularly after 1 h of incubation with CCRF-CEM cells and underwent intracellular hydrolysis. 5'-O-Fatty acyl derivatives of 1 showed significantly higher anti-HIV activity than the corresponding physical mixtures against the B-subtype virus.
Synthesis,<i>In Vitro</i>Anti-HIV Activity, and Biological Stability of 5′-<i>O</i>-Myristoyl Analogue Derivatives of 3′-Fluoro-2′,3′-Dideoxythymidine (FLT) as Potential Bifunctional Prodrugs of FLT
作者:Keykavous Parang、Edward E. Knaus、Leonard I. Wiebe
DOI:10.1080/07328319808004216
日期:1998.6
A group of 5'-O-myristoyl analogue derivatives of FLT (2) were evaluated as potentialanti-HIVagents that were designed to serve as prodrugs to FLT. 3'-Fluoro-2',3'-dideoxy-5'-O-(12-methoxydodecanoyl)thymidine (4) (EC50 = 3.8 nM) and 3'-fluoro-2',3'-dideoxy-5'-O-(12-azidododecanoyl)thymidine (8) (EC50 = 2.8 nM) were the most effective anti-HIV-1 agents. There was a linear correlation between Log P
[EN] FATTY ACYL AND FATTY ETHER CONJUGATES OF REMDESIVIR AND ITS ACTIVE METABOLITES AS ANTIVIRALS<br/>[FR] CONJUGUÉS D'ACYLE GRAS ET D'ÉTHER GRAS DE REMDÉSIVIR ET SES MÉTABOLITES ACTIFS EN TANT QU'ANTIVIRAUX
申请人:AJK PHARMACEUTICAL LLC
公开号:WO2021222807A1
公开(公告)日:2021-11-04
Antiviral compounds, pharmaceutical compositions containing the same, and methods of treating viral infections or medical disorders resulting from viral infections are disclosed.
Synthesis and biological evaluation of fatty acyl ester derivatives of 2′,3′-didehydro-2′,3′-dideoxythymidine
作者:Hitesh K. Agarwal、Kelly Loethan、Deendayal Mandal、Gustavo F. Doncel、Keykavous Parang
DOI:10.1016/j.bmcl.2011.02.070
日期:2011.4
A number of 5'-O-fatty acyl derivatives of 2',3'-didehydro-2',3'-dideoxythymidine (stavudine, d4T) were synthesized and evaluated for anti-HIV activities against cell-free and cell-associated virus, cellular cytotoxicity, and cellular uptake studies. The conjugates were found to be more potent than d4T. Among these conjugates, 5'-O-12-azidododecanoyl derivative of d4T (2), displaying EC50 = 3.1-22.4 mu M, showed 4- to 9-fold higher activities than d4T against cell-free and cell-associated virus. Cellular uptake studies were conducted on CCRF-CEM cell line using 5(6)-carboxyfluorescein derivatives of d4T attached through beta-alanine (9) or 12-aminododecanoic acid (10) as linkers. The fluorescein-substituted analog of d4T with long chain length (10) showed 12- to 15-fold higher cellular uptake profile than the corresponding analog with short chain length (9). These studies reveal that conjugation of fatty acids to d4T enhances the cellular uptake and anti-HIV activity of stavudine. (C) 2011 Elsevier Ltd. All rights reserved.
Synthesis and antiviral activity of fatty acyl conjugates of remdesivir against severe acute respiratory syndrome coronavirus 2 and Ebola virus
作者:Naglaa Salem El-Sayed、Alexander S. Jureka、Megan R. Edwards、Sandeep Lohan、Caroline G. Williams、Patrick T. Keiser、Robert A. Davey、Jennifer Totonchy、Rakesh K. Tiwari、Christopher F. Basler、Keykavous Parang
DOI:10.1016/j.ejmech.2021.113862
日期:2021.12
OPTICAL SENSOR SYSTEM FOR pH DETERMINATION INDEPENDENTLY OF THE ION STRENGTH USING FLUORESCEIN BOUND TO A POLYMER VIA A URETHANE AND/OR UREA GROUP