Title:Microwave Assisted Groebke-Blackburn-Bienayme Multicomponent Reaction to Synthesis of Imidazo[1,2-a]pyridine-furan Hybrids as Possible Therapeutic Option for Leukemia, Colon Cancer and Prostate Cancer
Volume: 11
Issue: 1
Author(s): Parth Manvar, Dharmesh Katariya, Amita Vyas, Pooja Bhanderi and Ranjan Khunt*
Affiliation:
- Chemical Research Laboratory, Department of Chemistry, Saurashtra University, Rajkot, 360 005, India
Keywords:
Medicinal chemistry, heterocyclic chemistry, imidazo[1, 2-a]pyridine-furan hybrids, peg 400, microwave irradiation, green approach, leukemia, colon cancer and prostate cancer.
Abstract:
Aims: Microwave assisted Groebke-Blackburn-Bienayme multicomponent reaction to
synthesis imidazo[1,2-a]pyridine-furan hybrids as anticancer agents.
Background: Microwave synthesis has emerged as a potent tool for the more economical and
environmental friendly synthesis of organic compounds, such as derivatives of imidazo[1,2-
a]pyridine. Compared to traditional synthesis, microwave radiation causes molecules to be excited
and distributes thermal energy evenly in a shorter amount of time.
Objective: The primary objective of the work presented in this article was to prepare imidazo[1,2-
a]pyridine-furan hybrids via Groebke-Blackburn-Bienayme multicomponent reaction using PEG
400 in microwave irradiation as green approach. Characterized it and evaluated their anticancer
activities.
Methods: In a sealed microwave glass vial, 5-methylfuran-2-carbaldehyde 1, 2-aminoazines 2ag,
isocyanides 3a-c in presence of 20mol% acetic acid were dissolved in PEG 400 (polyethylene
glycol 400) reaction solvent. The glass vial was sealed and irradiate in microwave with stirring
at temperature of 75°C for 10 min. This method is an efficient alternative approach to synthesizing
imidazo[1,2-a]pyridine-furan hybrids via Groebke-Blackburn-Bienayme multicomponent reaction.
Results: We have successfully synthesised the imidazo[1,2-a]pyridine-furan hybrids via
Groebke-Blackburn-Bienayme multicomponent reaction using PEG 400 in microwave irradiation
as green approach. The structures of the compounds were confirmed through various spectroscopic
techniques and evaluated their anticancer activities.
Conclusion: The reported protocol is advantageous over conventional methods of imidazo[1,2-
a]pyridine derivatives. The time required for the reaction is much less as compared to the usual
requirements of reflux. Compound 4e, 4f, 4n and 4o shows the most increased activity against
cell line RPMI-8226, HCT-116 and PC-3 of Leukemia, Colon cancer and Prostate cancer
respectively. By using the potential of imidazo[1,2-a]pyridine-furan based compounds via sustainable
green approach, more effective and accurate cancer treatments can be designed in future.