Semisynthesis of the Organoarsenical Antibiotic Arsinothricin
作者:Sazzad H. Suzol、A. Hasan Howlader、Adriana E. Galván、Manohar Radhakrishnan、Stanislaw F. Wnuk、Barry P. Rosen、Masafumi Yoshinaga
DOI:10.1021/acs.jnatprod.0c00522
日期:2020.9.25
broad-spectrum organoarsenical antibiotic, is a nonproteinogenic analogue of glutamate that effectively inhibits glutamine synthetase. We report the chemical synthesis of an intermediate in the pathway to 1, hydroxyarsinothricin [AST-OH (2)], which can be converted to 1 by enzymatic methylation catalyzed by the ArsM As(III) S-adenosylmethionine methyltransferase. This is the first report of semisynthesis
Synthesis of the organoarsenical antibiotic arsinothricin and derivatives thereof
申请人:Rosen Barry P.
公开号:US10934318B1
公开(公告)日:2021-03-02
The subject invention provides methods and procedures for synthesis and/or semi-synthesis of the novel antibiotic arsinothricin (AST) and derivatives. Arsinothricin (AST), a new broad-spectrum organoarsenical antibiotic, is a non-proteinogenic analog of glutamate that effectively inhibits glutamine synthetase. The subject invention provides chemical synthesis of an intermediate in the pathway of AST synthesis, hydroxyarsinothricin (AST-OH), which can be converted to AST by enzymatic methylation catalyzed by the ArsM As(III) S-adenosylmethionine methyltransferase. The methods provide a source of the novel antibiotic that will be required for future clinical trials. The subject invention also provides AST derivatives as a new class of antibiotics.
Chemical synthesis of the organoarsenical antibiotic arsinothricin
作者:A. Hasan Howlader、Sazzad H. Suzol、Venkadesh Sarkarai Nadar、Adriana Emilce Galván、Aleksandra Nedovic、Predrag Cudic、Barry P. Rosen、Masafumi Yoshinaga、Stanislaw F. Wnuk
DOI:10.1039/d1ra06770b
日期:——
We report two routes of chemical synthesis of arsinothricin (AST), the novel organoarsenical antibiotic. One is by condensation of the 2-chloroethyl(methyl)arsinic acid with acetamidomalonate, and the second involves reduction of the N-acetyl protected derivative of hydroxyarsinothricin (AST-OH) and subsequent methylation of a trivalent arsenic intermediate with methyl iodide. The enzyme AST N-acetyltransferase