Application of the Phosphoramidate ProTide Approach to 4‘-Azidouridine Confers Sub-micromolar Potency versus Hepatitis C Virus on an Inactive Nucleoside
摘要:
We report the application of our phosphoramidate ProTide technology to the ribonucleoside analogue 4'-azidouridine to generate novel antiviral agents for the inhibition of hepatitis C virus (HCV). 4'-Azidouridine did not inhibit HCV, although 4'-azidocytidine was a potent inhibitor of HCV replication under similar assay conditions. However 4'-azidouridine triphosphate was a potent inhibitor of RNA synthesis by HCV polymerase, raising the question as to whether our phosphoramidate ProTide approach could effectively deliver 4'-azidouridine monophosphate to HCV replicon cells and unleash the antiviral potential of the triphosphate. Twenty-two phosphoramidates were prepared, including variations in the aryl, ester, and amino acid regions. A number of compounds showed sub-micromolar inhibition of HCV in cell culture without detectable cytotoxicity. These results confirm that phosphoramidate ProTides can deliver monophosphates of ribonucleoside analogues and suggest a potential path to the generation of novel antiviral agents against HCV infection. The generic message is that ProTide synthesis from inactive parent nucleosides may be a warranted drug discovery strategy.
[EN] DIASTEREOSELECTIVE SYNTHESIS OF PHOSPHATE DERIVATIVES AND OF THE GEMCITABINE PRODRUG NUC-1031<br/>[FR] SYNTHÈSE DIASTÉRÉOSÉLECTIVE DE DÉRIVÉS DE PHOSPHATE ET DU PROMÉDICAMENT DE GEMCITABINE NUC-1031
申请人:NUCANA BIOMED LTD
公开号:WO2017098252A1
公开(公告)日:2017-06-15
The present invention provides a method for the preparation of intermediates useful in the synthesis of gemcitabine-[phenyl-benzoxy-L-alaninyl)]-phosphate. It also provides a method of preparing gemcitabine-[phenyl-benzoxy-L-alaninyl)]-phosphate.
[EN] SYNTHESIS OF 3'-DEOXYADENOSINE-5'-0-[PHENYL(BENZYLOXY-L-ALANINYL)]PHOSPHATE (NUC-7738)<br/>[FR] SYNTHÈSE DE 3'-DÉSOXYADÉNOSINE-5'-0-[PHÉNYL(BENZYLOXY-L-ALANINYL)]PHOSPHATE (NUC -7738)
申请人:NUCANA PLC
公开号:WO2018229495A1
公开(公告)日:2018-12-20
The present invention generally relates to a novel process for the preparation of 3'-deoxyadenosine derivatives,and particularly NUC-7738 (3'-deoxyadenosine-5'-O-[phenyl(benzyloxy-L-alaninyl)] phosphate) an anticancer ProTide of deoxyadenosine.
Microwave-assisted organic synthesis of nucleoside ProTide analogues
作者:Cinzia Bordoni、Cecilia Maria Cima、Elisa Azzali、Gabriele Costantino、Andrea Brancale
DOI:10.1039/c9ra01754b
日期:——
A microwave enhanced synthesis of prodrug nucleotide (ProTide) analogues is presented. Comparison of conventional thermal heating reaction with microwave irradiation exemplifies the potential of the novel methodology herein presented for the selective 5′-phosphoramidate synthesis, without protection of the 3′ position in the ribonucleoside.
THIONUCLEOSIDE DERIVATIVE OR SALT THEREOF, AND PHARMACEUTICAL COMPOSITION
申请人:FUJIFILM Corporation
公开号:US20170233429A1
公开(公告)日:2017-08-17
Disclosed are a compound and a pharmaceutical composition that exhibit an excellent drug efficacy against a tumor, in particular a tumor which has acquired resistance to gemcitabine. Specifically, provided is a thionucleoside derivative represented by General Formula [1]
(in the formula, R
1
represents a hydroxyl group which may be protected, a C
1-20
alkoxy group which may be substituted, or the like; R
2
represents a C
1-20
alkoxy group which may be substituted, a C
3-8
cycloalkoxy group which may be substituted, or the like; and R
3
represents a hydrogen atom or the like); or a salt thereof. Further, provided is a pharmaceutical composition containing such a thionucleoside derivative or a salt thereof.