1233335-84-6Relevant academic research and scientific papers
Design, synthesis, and biological evaluation of novel 2′-methyl-2′-fluoro-6-methyl-7-alkynyl-7-deazapurine nucleoside analogs as anti-Zika virus agents
Yao, Guoqiang,Yu, Jianchen,Lin, Cai,Zhu, Yujia,Duan, Anna,Li, Mengfeng,Yuan, Jie,Zhang, Jiancun
, (2022/03/23)
Zika virus (ZIKV) is a mosquito-borne flavivirus and outbreaks of ZIKV have been reported in Africa, Americas and other parts of the world lately. The ZIKV epidemic has received extensive attention due to its ability to cause serious medical consequences and complications such as microcephaly and Guillain-Barre syndrome in recent years. Up to now, there are no specific treatments or vaccines available for ZIKV infection, which highlights the urgent need for developing new therapies. In this work, we designed and synthesized a series of novel 6-methyl-7-acetylenenyl-7-deazapurine nucleoside analogs as potential inhibitors of ZIKV replication. The biological activities against ZIKV replication were evaluated and the structure-activity relationship (SAR) was also studied. Among the compounds evaluated, nucleoside analog 38 (EC50 = 2.8 ± 0.8 μM, EC90 = 6.8 ± 2.3 μM) showed the most potent anti-ZIKV activity with low cytotoxicity (CC50 = 54.1 ± 6.9 μM) in an A549 based cellular model. The inhibitory activity of 38 was about 5 times more potent than the positive control NITD008. Notably, 38 showed similar inhibition potency against different ZIKV strains (ZG-01 and MR766) in a variety of host cell types including SNB19, A549, Huh7, Vero. In addition, 38 (Kd = 1.87 μM) has a stronger affinity to ZIKV RNA-dependent RNA polymerase (RdRp) protein than NITD008 (Kd = 3.43 μM) in the non-phosphorylation assay. These results indicated that compound 38 may serve as a promising candidate in future anti-ZIKV drug discovery.
Synthesis of 7-trifluoromethyl-7-deazapurine ribonucleoside analogs and their monophosphate prodrugs
Cho, Jong Hyun,Bassit, Leda C.,Amblard, Franck,Schinazi, Raymond F.
, p. 671 - 687 (2019/11/03)
Novel 7-trifluoromethyl-7-deazapurine ribonucleoside analogs (13a-c) and their Protides (15a-c) were successfully synthesized from ribolactol or 1-α-bromo-ribose derivatives using Silyl-Hilbert-Johnson or nucleobase-anion substitution reactions followed by key aromatic trifluoromethyl substitution. Newly prepared compounds were evaluated against a panel of RNA viruses, including HCV, Ebola or Zika viruses.
Stereoselective synthesis of PSI-352938: A β-D -2′-deoxy- 2′-α-fluoro-2′-β-C-methyl-3′,5′-cyclic phosphate nucleotide prodrug for the treatment of HCV
Reddy, P. Ganapati,Chun, Byoung-Kwon,Zhang, Hai-Ren,Rachakonda, Suguna,Ross, Bruce S.,Sofia, Michael J.
experimental part, p. 3782 - 3790 (2011/07/08)
PSI-352938 is a novel 2′-deoxy-2′-α-fluoro-2′- β-C-methyl 3′,5′-cyclic phosphate nucleotide prodrug currently under investigation for the treatment of hepatitis C virus (HCV) infection. PSI-352938 demonstrated superior characteristics in vitro that include broad genotype coverage, superior resistance profile, and high levels of active triphosphate in vivo in the liver compared to our first and second generation nucleoside inhibitors of this class. Consequently, PSI-352938 was selected for further development and an efficient and scalable synthesis was sought to support clinical development. We report an improved, diastereoselective synthesis of a key 1′-β-nucleoside intermediate 13 via SN2 displacement of 1-α-bromo ribofuranose sugar 16 with the potassium salt of 6-chloro-2-amino purine and an efficient method to prepare cis-Rp cyclic phosphate (PSI-352938) in a highly stereoselective manner without any chromatographic purification. The 1-α-bromo sugar 16 was stereospecifically prepared from the corresponding 1-β-lactol in high yield under mild bromination conditions using CBr4/PPh3 (Appel reaction). The desired cis-Rp 3′,5′-cyclic phosphate construction was accomplished using isopropyl phosphorodichloridate readily obtained from POCl3 and isopropyl alcohol. The base combination of Et 3N/NMI was identified as a key factor for producing PSI-352938 as the major (>95%) diastereomer (cis-Rp) in high yield after the final cyclization step. The current route described in this article was successfully used to produce PSI-352938 on multikilogram scale.
NUCLEOSIDE ANALOGS
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Page/Page column 23-24, (2010/07/09)
A purified compound having activity against hepatitis C virus is disclosed.
