Volume 135, Issue 51 e202313404
Zuschrift

Enantioselective Synthesis of Bicyclo[3.2.1]octadienes via Palladium-Catalyzed Intramolecular Alkene-Alkyne Coupling Reaction

Qiuyu Li

Qiuyu Li

State Key Laboratory of Natural Medicines (SKLNM), Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009 P. R. China

These authors contributed equally to this work.

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Jiajia Li

Jiajia Li

State Key Laboratory of Natural Medicines (SKLNM), Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009 P. R. China

These authors contributed equally to this work.

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Jie Zhang

Jie Zhang

State Key Laboratory of Natural Medicines (SKLNM), Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009 P. R. China

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Shu Wu

Shu Wu

State Key Laboratory of Natural Medicines (SKLNM), Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009 P. R. China

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Yu Zhang

Yu Zhang

State Key Laboratory of Natural Medicines (SKLNM), Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009 P. R. China

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Prof. Dr. Aijun Lin

Corresponding Author

Prof. Dr. Aijun Lin

State Key Laboratory of Natural Medicines (SKLNM), Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009 P. R. China

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Prof. Dr. Hequan Yao

Corresponding Author

Prof. Dr. Hequan Yao

State Key Laboratory of Natural Medicines (SKLNM), Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009 P. R. China

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First published: 03 November 2023
Citations: 4

Abstract

Bicyclo[3.2.1]octadiene compounds and derivatives exist in a number of natural products and bioactive compounds. Nevertheless, catalytic enantioselective protocols for the synthesis of these skeletons have not been disclosed. Herein we reported a palladium-catalyzed asymmetric intramolecular alkene-alkyne coupling of alkyne-tethered cyclopentenes, affording a library of enantionenriched bicyclo[3.2.1]octadienes in excellent yields and enantioselectivities (mostly >99 % ee). Moreover, the products could undergo an unusual iodination-induced 1,2-acyl migration, forming iodinated bicyclo[3.2.1]octadienes with three vicinal stereocenters. The enone and isolated olefin motifs embedded in the products provide useful handles for downstream elaboration.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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