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.
本发明提供了合成和/或半合成新型抗生素
砷替霉素(AST)及其衍
生物的方法和程序。
砷替霉素(AST)是一种新型广谱有机
砷抗生素,是谷
氨酸的非蛋白质原型,可以有效地抑制谷
氨酰胺合成酶。本发明提供了AST合成途径中的中间体羟基
砷替霉素(AST-OH)的
化学合成方法,该中间体可以通过ArsM As(III)S-
腺苷甲
硫氨酸甲基转移酶催化的酶促甲基化转化为AST。这些方法提供了一种新型抗生素的来源,将在未来的临床试验中需要。本发明还提供了AST衍
生物作为一类新型抗生素。