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The present and future synthetic strategies of structural modifications of sinomenine

Abstract

Sinomenine is a tetracyclic alkaloid that is extracted from traditional Chinese medicine, sinomenium acutum. It has been reported to possess low cytotoxicity and a variety of biological activities, such as anti-tumor, anti-inflammatory and anti-arthritic effects. However, the relatively short biological half-life of sinomenine hinders its extensive clinical applications. Hence, extensive research on structural modifications has been carried out in recent decades. The reaction sites can be classified into four categories based on functional groups―aromatic ring (A-ring), benzylic position (B-ring), enone (C-ring) and trialkylamine (D-ring). This review summarizes representative examples of each modification to date and discusses the synthetic difficulties, especially the chemoselectivity and stereoselectivity of reactions. The future prospectives of synthesis of sinomenine derivatives from sinomenine-like derivatives and by some novel late-stage functionalizations, which can be potentially applicable to sinomenine, of structurally similar derivatives are also discussed.

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Article information


Submitted
01 Jul 2020
Accepted
02 Oct 2020
First published
14 Oct 2020

Org. Chem. Front., 2020, Accepted Manuscript
Article type
Review Article

The present and future synthetic strategies of structural modifications of sinomenine

J. P. L. Ng, P. Coghi, B. Y. K. Law, L. Liu and V. K. W. Wong, Org. Chem. Front., 2020, Accepted Manuscript , DOI: 10.1039/D0QO00785D

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