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amprenavir
Amprenavir (original brand name Agenerase, GlaxoSmithKline) is a protease inhibitor used to treat HIV infection. It was approved by the Food and Drug Administration on April 15, 1999, for twice-a-day dosing instead of needing to be taken every eight hours. The convenient dosing came at a price, as the dose required is 1,200 mg, delivered in 8 (eight) very large 150 mg gel capsules or 24 (twenty-four) 50 mg gel capsules twice daily.
Production of amprenavir was discontinued by the manufacturer on December 31, 2004; a prodrug version (fosamprenavir, brand name Telzir/Lexiva) is available.
==Background==
Research aimed at development of renin inhibitors as potential antihypertensive agents had led to the discovery of compounds that blocked the action of this peptide cleaving enzyme. The amino acid sequence cleaved by renin was found to be fortuitously the same as that required to produce the HIV peptide coat. Structure–activity studies on renin inhibitors proved to be of great value for developing HIV protease inhibitors. Incorporation of an amino alcohol moiety proved crucial to inhibitory activity for many of these agents. This unit is closely related to the one found in the statine, an unusual amino acid that forms part of the pepstatin, a fermentation product that inhibits protease enzymes.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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