Influenza Viruses

Image via Wikipedia Influenza viruses are a group of RNA viruses from Orthomyxoviridae family. These are 3 in number namely: Influenzavirus A, Influenzavirus B and Influenzavirus C. Each of these genus has only one species namely influenza A virus, influenza B virus and influenza C virus. Among the three, type A causes severe disease and … Read more

HiStory of Carbocyclic Nucleosides

Carbocyclic Nucleosides is the name given to the class of molecules which are very similar to Nucleosides despite the fact that their furanose ring system in sugar counterpart is replace by a cyclopentyl ring. The first molecule, classified as Carbocyclic Nucleoside was Synthesized in a lab of Southern Research Institute in Birmingham, Albama. It was … Read more

Truvada: Recommended for pre-exposure prophylaxis (PrEP)

The United States FDA‘s advisory committee has recommended that Truvada should be approved for HIV prophylaxis. Gilead Sciences Inc is the manufacturer of the drug to be used in combination therapy of AIDS. The drug is a RTI (Reverse Transcriptase Inhibitor), although it can not destroy the virus but stops their replication. Truvada consists of … Read more

Design & Development of Unnatural Nucleosides as Antiviral & Anti-Cancer Agents

Design & Development of Unnatural Nucleosides as Antiviral & Anti-Cancer Agents   Ram C. Mishra   College of Pharmacy, University of Georgia, GA 30602, USA  Unnatural nucleosides are the variants (chemically modified analogs) of five natural nucleosides which constitute the structure of DNA and RNA. Since the first preparation and later, the isolation of unnatural … Read more

The New Hep C Drug: PSI-7977 to Sofosbuvir

Recently (December 6th, 2013) Sofosbuvir was approved by US FDA for the treatment of Chronic Hepatitis C in combination with Ribavirin for dual therapy and with Ribavirin & Pegylated Interferon triple therapy for treatment-naive patients having HCV genotypes 1 and 4. The drug is being marketed as Sovaldi by Gilead.