A concise synthetic route to the conduritols from pentoses

Area of Science:

• Organic Chemistry
• Synthetic Chemistry

Background:

• Conduritols are valuable natural products with diverse biological activities.
• Efficient synthetic routes are crucial for accessing conduritol analogs for research.

Purpose of the Study:

• To develop a short and efficient synthetic strategy for the preparation of conduritols.
• To explore a novel zinc-mediated fragmentation and allylation sequence.

Main Methods:

• Zinc-mediated fragmentation of protected methyl 5-deoxy-5-iodo-d-pentofuranosides.
• In-situ allylation of the intermediate aldehyde using 3-bromopropenyl benzoate.
• Optional imine formation for amino group introduction.
• Ring-closing olefin metathesis to form the conduritol core.

Main Results:

• The synthetic strategy provides a concise route to functionalized 1,7-octadienes.
• Allylation proceeds with good diastereoselectivity.
• The method allows for the introduction of an amino group.
• Protected conduritols are successfully obtained via ring-closing metathesis.

Conclusions:

• A novel and efficient synthetic route to conduritols has been established.
• The described method offers a versatile platform for synthesizing conduritol derivatives.