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Medicinal Chemistry

Editor-in-Chief

ISSN (Print): 1573-4064
ISSN (Online): 1875-6638

Research Article

2, 4, 5-Trideoxyhexopyranosides Derivatives of 4’-Demethylepipodophyllotoxin: De novo Synthesis and Anticancer Activity

Author(s): Yapeng Lu, Li Zhu, Rui Cai, Yu Li and Yu Zhao*

Volume 18, Issue 1, 2022

Published on: 19 November, 2020

Page: [130 - 139] Pages: 10

DOI: 10.2174/1573406416666201120102250

Price: $65

Abstract

Background: Podophyllotoxin is a natural lignan which possesses anticancer and antiviral activities. Etoposide and teniposide are semisynthetic glycoside derivatives of podophyllotoxin and are increasingly used in cancer medicine.

Objective: The present work aimed to design and synthesize a series of 2, 4, 5-trideoxyhexopyranosides derivatives of 4’-demethylepipodophyllotoxin as novel anticancer agents.

Methods: A divergent de novo synthesis of 2, 4, 5-trideoxyhexopyranosides derivatives of 4’- demethylepipodophyllotoxin has been established via palladium-catalyzed glycosylation. The abilities of synthesized glycosides to inhibit the growth of A549, HepG2, SH-SY5Y, KB/VCR and HeLa cancer cells were investigated by MTT assay. Flow cytometric analysis of cell cycle with propidium iodide DNA staining was employed to observe the effect of compound 5b on cancer cell cycle.

Results: Twelve D and L monosaccharide derivatives 5a-5l have been efficiently synthesized in three steps from various pyranone building blocks employing de novo glycosylation strategy. Dmonosaccharide 5b showed the highest cytotoxicity on five cancer cell lines with the IC50 values ranging from 0.9 to 6.7 μM. It caused HepG2 cycle arrest at G2/M phase in a concentrationdependent manner.

Conclusion: The present work leads to the development of novel 2, 4, 5-trideoxyhexopyranosides derivatives of 4’-demethylepipodophyllotoxin. The biological results suggest that the replacement of the glucosyl moiety of etoposide with 2, 4, 5-trideoxyhexopyranosyl is favorable to their cytotoxicity. D-monosaccharide 5b was observed to cause HepG2 cycle arrest at the G2/M phase in a concentration- dependent manner.

Keywords: 4'-demethylepipodophyllotoxin, De novo synthesis, anticancer agents, 2, 4, 5-trideoxyhexopyranosides, glycosylation, cell cycle arrest.

Graphical Abstract
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