Total synthesis of methymycin

Area of Science:

• Organic Chemistry
• Synthetic Chemistry

Background:

• Macrolide antibiotics are complex natural products with significant therapeutic potential.
• Efficient synthetic routes are crucial for accessing these compounds and their analogs.

Purpose of the Study:

• To develop a robust synthetic strategy for methynolide and 10-epi-methynolide.
• To achieve the total synthesis of the macrolide antibiotic methymycin.

Main Methods:

• Stereoselective synthesis of key segments using Grignard addition to alpha-alkoxyketones with Cram chelation control.
• Application of ring-closing metathesis for macrocycle formation.
• Glycosylation of methynolide with a D-desosamine derivative for methymycin synthesis.

Main Results:

• Successful synthesis of methynolide and 10-epi-methynolide.
• Completion of the total synthesis of methymycin, demonstrating the efficacy of the developed route.

Conclusions:

• The synthetic strategy effectively constructs the methynolide core and enables the synthesis of methymycin.
• This work provides a valuable pathway for the synthesis of complex macrolides.