Total Synthesis of Pseudouridimycin

Area of Science:

• Medicinal Chemistry
• Organic Synthesis
• Microbiology

Background:

• Pseudouridimycin (1) is a potent antibiotic with a novel mechanism of action.
• It exhibits activity against Gram-positive and Gram-negative bacteria, including multi-drug-resistant strains.
• The natural source of pseudouridimycin is *Streptomyces* sp.

Purpose of the Study:

• To develop an efficient and practical synthetic route for pseudouridimycin (1).
• To explore the synthesis of N-hydroxylated peptidyl nucleosides.
• To provide a method for producing potential therapeutic agents against resistant bacterial infections.

Main Methods:

• A convergent synthetic strategy was employed.
• The synthesis involved coupling 5'-amino-pseudouridine (5) with N-hydroxy-dipeptide (26).
• Key intermediate 26 was prepared via hydroxylaminolysis of a glutamine-derived nitrone and subsequent glycylation.

Main Results:

• Pseudouridimycin (1) was synthesized in a 23% total yield.
• The synthetic method proved efficient and practical for N-hydroxylated peptidyl nucleoside preparation.
• The study successfully demonstrated a viable route to this important antibiotic class.

Conclusions:

• The developed synthetic strategy offers an effective pathway for producing pseudouridimycin and related N-hydroxylated peptidyl nucleosides.
• This research facilitates further investigation into the therapeutic potential of these compounds against resistant bacterial infections.
• The synthetic methodology is amenable to the scalable production of valuable nucleoside analogs.