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- >263°C (dec.)
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- 662.7±40.0 °C(Predicted)
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- 1.13±0.1 g/cm3(Predicted)
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- Hygroscopic, -20°C Freezer, Under inert atmosphere
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PA-457 is an inhibitor of HIV-1 virion maturation. It inhibits the cleavage of the Gag capsid (CA) precursor CA-SP1 to the mature CA protein. PA-457 inhibits the replication of drug-sensitive and -resistant clinical isolates of HIV-1 in isolated human peripheral blood mononuclear cells (PBMCs; mean IC50s = 10.3 and 7.8 nM, respectively). In vivo, it prevents replication of HIV-1 in SCID-hu Thy/Liv mice when administered at a dose of 100 mg/kg.??
ChEBI: A pentacyclic triterpenoid obtained by the formal condensation of 2,2-dimethylsuccinic acid with the 3-hydroxy group of betulinic acid. It is isolated from the Chinese herb Syzygium claviflorum. The first in the class of HIV-1 maturation inhib tors to be studied in humans, bevirimat was identified as a potent HIV drug candidate and several clinical trials were conducted, but development into a new drug was plagued by numerous resistance-related problems.?? ???
This first-in-class, natural product-based antiviral (FW = 584.83 g/mol; CAS 174022-42-5; Abbreviation: BVM), also known as 3-O-(3',3'- dimethylsuccinyl)betulinate (DSB), 3β-(3-carboxy-3-methyl-butanoyloxy)- lup-20(29)-en-28-oic acid, PA-457, and MPC-4326, is a novel HIV-1 maturation inhibitor that blocks proteolytic processing of the Gag capsid precursor (CA-SP1) into mature capsid (CA) protein. Bevirimat binds to the Gag polypeptide at the CA/SP1 cleavage site. The net result of BVM treatment is the release of immature, noninfectious viral particles. Despite its promising mode of action, about half of all patients have viruses containing genetic polymorphisms in the Gag SP1 (at positions 6 to 8) protein do not respond to BVM treatment.????? ?? ?? ? ???
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