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Letters in Organic Chemistry

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ISSN (Print): 1570-1786
ISSN (Online): 1875-6255

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Research Article

Microwave-assisted Synthesis of Polymethoxychalcone Mannich Bases and Their Antiproliferative Activity

Author(s): Peipei Han, Wenhua Zhou, Mingxia Chen and Qiuan Wang*

Volume 16, Issue 2, 2019

Page: [117 - 121] Pages: 5

DOI: 10.2174/1570178615666180627110223

Price: $65

Abstract

A series of eight polymethoxychalcone Mannich base derivatives 2a-2h was synthesized via the microwave-assisted Mannich reaction of natural product 2'-hydroxy-3,4,4',5,6'-pentamethoxychalcone (1) with various secondary amines and formaldehyde. Compared to conventional heating method (80°C), the microwave-assisted method (700W, 65°C) is efficient with short reaction time (0.5-1 h) and good yields (74-88%). The antiproliferative activities of eight Mannich base derivatives were evaluated in vitro on a panel of three human cancer cell lines (Hela, HCC1954 and SK-OV-3) by CCK-8 assay. The results showed that all of the Mannich base derivatives exhibited potential antiproliferative activities on tested cancer cell lines with the IC50 values of 9.13-48.51 µM. Some active compounds exhibited more activity as compared to positive control cis-Platin. Among them, compound 2b revealed to have the strongest antiproliferative activity against all the three cancer cell lines with IC50 values ranging from 9.13 to 11.24 µM.

Keywords: Polymethoxychalcone, mannich base derivatives, microwave-assisted synthesis, antiproliferative activity, cancer cells, formaldehyde.

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