Volume 135, Issue 41 e202310118
Forschungsartikel

Chemodivergent Staudinger Reactions of Secondary Phosphine Oxides and Application to the Total Synthesis of LL–D05139β Potassium Salt

Wenjun Luo

Wenjun Luo

School of Chemistry, Sun Yat-sen University, 510275 Guangzhou, P. R. China

PCFM Lab and GDHPRC Lab, Sun Yat-sen University, 510275 Guangzhou, P. R. China

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Dr. Fang Xu

Dr. Fang Xu

International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development, Ministry of Education (MOE) of P. R. China, College of Pharmacy, Jinan University, 510632 Guangzhou, Guangdong, P. R. China

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Zhenguo Wang

Zhenguo Wang

School of Chemistry, Sun Yat-sen University, 510275 Guangzhou, P. R. China

PCFM Lab and GDHPRC Lab, Sun Yat-sen University, 510275 Guangzhou, P. R. China

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Prof. Jiyan Pang

Prof. Jiyan Pang

School of Chemistry, Sun Yat-sen University, 510275 Guangzhou, P. R. China

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Zixu Wang

Zixu Wang

School of Chemistry, Sun Yat-sen University, 510275 Guangzhou, P. R. China

PCFM Lab and GDHPRC Lab, Sun Yat-sen University, 510275 Guangzhou, P. R. China

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Zhixiu Sun

Zhixiu Sun

School of Chemistry, Sun Yat-sen University, 510275 Guangzhou, P. R. China

PCFM Lab and GDHPRC Lab, Sun Yat-sen University, 510275 Guangzhou, P. R. China

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Dr. Aiyun Peng

Dr. Aiyun Peng

School of Chemistry, Sun Yat-sen University, 510275 Guangzhou, P. R. China

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Dr. Xiaohui Cao

Corresponding Author

Dr. Xiaohui Cao

School of Pharmacy, Guangdong Pharmaceutical University, 510006 Guangzhou, P. R. China

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Prof. Le Li

Corresponding Author

Prof. Le Li

School of Chemistry, Sun Yat-sen University, 510275 Guangzhou, P. R. China

PCFM Lab and GDHPRC Lab, Sun Yat-sen University, 510275 Guangzhou, P. R. China

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Dedicated to Professor Daniel Seidel on the occasion of his 50th birthday
First published: 18 August 2023

Abstract

Unprecedented Staudinger reaction modes of secondary phosphine oxides (SPO) and organic azides are herein disclosed. By the application of various additives, selective nitrogen atom exclusion from the azide group has been achieved. Chlorotrimethylsilane mediates a stereoretentive Staudinger reaction with a 2-N exclusion which provides a valuable method for the synthesis of phosphinic amides and can be considered complementary to the stereoinvertive Atherton–Todd reaction. Alternatively, a 1-N exclusion pathway is promoted by acetic acid to provide the corresponding diazo compound. The effectiveness of this protocol has been further demonstrated by the total synthesis of the diazo-containing natural product LL-D05139β, which was prepared as a potassium salt for the first time in 6 steps and 26.5 % overall yield.

Conflict of interest

Sun Yat-sen University has filed a patent application.

Data Availability Statement

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

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.