Synthesis of Bacillithiol and the Catalytic Selectivity of FosB-Type Fosfomycin Resistance Proteins

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• 作者：Alexander P. Lamers ; Mary E. Keithly ; Kwangho Kim ; Paul D. Cook ; Donald F. Stec ; Kelly M. Hines ; Gary A. Sulikowski ; Richard N. Armstrong
• 刊名：Organic Letters
• 出版年：2012
• 出版时间：October 19, 2012
• 年：2012
• 卷：14
• 期：20
• 页码：5207-5209
• 全文大小：221K
• 年卷期：v.14,no.20(October 19, 2012)
• ISSN：1523-7052

文摘

Bacillithiol (BSH) has been prepared on the gram scale from the inexpensive starting material, d-glucosamine hydrochloride, in 11 steps and 8鈥?% overall yield. The BSH was used to survey the substrate and metal-ion selectivity of FosB enzymes from four Gram-positive microorganisms associated with the deactivation of the antibiotic fosfomycin. The in vitro results indicate that the preferred thiol substrate and metal ion for the FosB from Staphylococcus aureus are BSH and Ni(II), respectively. However, the metal-ion selectivity is less distinct with FosB from Bacillus subtilis, Bacillus anthracis, or Bacillus cereus.