Author: Yoon, Ji-seong; Kim, Gyudong; Jarhad, Dnyandev B.; Kim, Hong-Rae; Shin, Young-Sup; Qu, Shuhao; Sahu, Pramod K.; Kim, Hea Ok; Lee, Hyuk Woo; Wang, Su Bin; Kong, Yun Jeong; Chang, Tong-Shin; Ogando, Natacha S.; Kovacikova, Kristina; Snijder, Eric J.; Posthuma, Clara C.; van Hemert, Martijn J.; Jeong, Lak Shin
Title: Design, Synthesis, and Anti-RNA Virus Activity of 6′-Fluorinated-Aristeromycin Analogues Cord-id: gfumqmku Document date: 2019_6_7
ID: gfumqmku
Snippet: [Image: see text] The 6′-fluorinated aristeromycins were designed as dual-target antiviral compounds aimed at inhibiting both the viral RNA-dependent RNA polymerase (RdRp) and the host cell S-adenosyl-l-homocysteine (SAH) hydrolase, which would indirectly target capping of viral RNA. The introduction of a fluorine at the 6′-position enhanced the inhibition of SAH hydrolase and the activity against RNA viruses. The adenosine and N(6)-methyladenosine analogues 2a–e showed potent inhibition a
Document: [Image: see text] The 6′-fluorinated aristeromycins were designed as dual-target antiviral compounds aimed at inhibiting both the viral RNA-dependent RNA polymerase (RdRp) and the host cell S-adenosyl-l-homocysteine (SAH) hydrolase, which would indirectly target capping of viral RNA. The introduction of a fluorine at the 6′-position enhanced the inhibition of SAH hydrolase and the activity against RNA viruses. The adenosine and N(6)-methyladenosine analogues 2a–e showed potent inhibition against SAH hydrolase, while only the adenosine derivatives 2a–c exhibited potent antiviral activity against all tested RNA viruses such as Middle East respiratory syndrome-coronavirus (MERS-CoV), severe acute respiratory syndrome-coronavirus, chikungunya virus, and/or Zika virus. 6′,6′-Difluoroaristeromycin (2c) showed the strongest antiviral effect for MERS-CoV, with a ∼2.5 log reduction in infectious progeny titer in viral load reduction assay. The phosphoramidate prodrug 3a also demonstrated potent broad-spectrum antiviral activity, possibly by inhibiting the viral RdRp. This study shows that 6′-fluorinated aristeromycins can serve as starting points for the development of broad-spectrum antiviral agents that target RNA viruses.
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