Total synthesis and stereochemical assignment of baringolin

Area of Science:

• Organic Chemistry
• Natural Product Synthesis
• Medicinal Chemistry

Background:

• Thiopeptide antibiotics are a class of complex natural products with significant antibacterial activity.
• Baringolin is a thiopeptide antibiotic whose total synthesis presents a considerable challenge due to its intricate structure.
• Developing efficient synthetic routes to complex natural products is crucial for drug discovery and development.

Purpose of the Study:

• To achieve the total synthesis of the thiopeptide antibiotic baringolin.
• To confirm the proposed structure and stereochemistry of baringolin through synthesis.
• To establish a modular synthetic strategy applicable to other thiopeptide natural products.

Main Methods:

• Utilized a strategy centered on palladium-catalyzed cross-coupling reactions for modular construction.
• Employed advanced synthetic organic chemistry techniques for fragment assembly and functional group manipulation.
• Performed rigorous analytical methods, including NMR spectroscopy and mass spectrometry, for structural and stereochemical confirmation.

Main Results:

• Successfully synthesized baringolin, a complex thiopeptide antibiotic.
• Confirmed the structure and stereochemistry of the synthesized baringolin.
• Demonstrated the efficacy of the palladium-catalyzed cross-coupling strategy for modular synthesis.

Conclusions:

• The total synthesis of baringolin was accomplished, validating the proposed structure and stereochemistry.
• The developed modular strategy offers a versatile approach for the synthesis of thiopeptide natural products.
• This synthetic achievement provides access to baringolin for further biological evaluation and potential therapeutic applications.