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Solid-phase Synthesis of [4.4] Spirocyclic Oximes
Published on: February 6, 2019
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Total Synthesis of (±)-Spiroaxillarone A
Minjian Liao1, Xiangxin Li1, Yajuan Zheng1
1State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
The Journal of Organic Chemistry
|March 1, 2021
Summary
Researchers synthesized Spiroaxillarone A, a novel natural product, showcasing significant antimalarial activity. This five-step synthesis utilized key cycloaddition and dehydrogenation reactions for constructing the unique spirocyclic structure.
Area of Science:
- Organic Chemistry
- Medicinal Chemistry
- Natural Products Chemistry
Background:
- Natural products are a vital source of drug leads.
- Spirocyclic compounds possess unique structural features and biological activities.
- Malaria remains a significant global health challenge, necessitating new therapeutic agents.
Purpose of the Study:
- To achieve the first total synthesis of Spiroaxillarone A.
- To explore a novel synthetic route for complex spirocyclic dinaphthalene natural products.
- To evaluate the antimalarial potential of the synthesized compound.
Main Methods:
- Regioselective synthesis of Spiroaxillarone A from tetrahydrocurcumin.
- Utilized an oxidized free radical cycloaddition for spiro ring construction.
- Employed oxidized dehydrogenation via enol silicon ether from diketones to introduce double bonds.
Main Results:
- Successfully synthesized Spiroaxillarone A in five steps.
- Achieved an overall yield of 10% for the synthetic route.
- The synthesized Spiroaxillarone A demonstrated significant antimalarial activity.
Conclusions:
- The developed synthetic strategy provides efficient access to Spiroaxillarone A.
- This work validates Spiroaxillarone A as a promising scaffold for antimalarial drug development.
- Highlights the potential of natural product synthesis in discovering new medicines.
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