You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Nucleoside reverse transcriptase inhibiting drug, which is a guanosine analogue: March 2012 and explain in detail?
Ans: C i.e. Abacavir Anti-viral drugs and mechanism of action Ritonavir is a potent retroviral protease inhibitor Zidovudine is a thymidine analogue, the prototype of nucleoside reverse transcriptase inhibitors (NI) Abacavir, a guanosine analogue (nucleoside reverse transcriptase inhibitors), is a potent ARV drug that acts after intracellular conversion to carbovir triphosphate. Acyclovir is a deoxiguanosine analogue antiviral drug (anti-herpes), which requires a virus specific enzyme for conversion to the active metabolite that inhibits DNA synthesis and viral replication