Facile Multicomponent Synthesis, Computational, and Docking Studies of Spiroindoloquinazoline Compounds

Area of Science:

• Organic Chemistry
• Medicinal Chemistry
• Computational Chemistry

Background:

• Spiroindoloquinazolines are heterocyclic compounds with significant biological activities.
• Efficient synthetic routes are crucial for exploring their potential in drug discovery.

Purpose of the Study:

• To develop a novel, efficient one-pot synthesis for spiroindoloquinazolines.
• To characterize the synthesized compounds using spectroscopic and computational methods.
• To evaluate the potential biological applications of the synthesized compounds through molecular docking studies.

Main Methods:

• One-pot three-component condensation reactions involving tryptanthrin, malononitrile/ethylcyanoacetate, and nucleophiles.
• Reaction optimization using methanol as solvent and triethylamine as catalyst under reflux.
• Structural elucidation using DFT (B3LYP 6-311G(d,p) basis set) calculations and comparison with experimental data.
• Molecular docking studies to assess biological activity and drug design potential.

Main Results:

• Successful synthesis of spiroindoloquinazolines via a one-pot, three-component reaction.
• The developed method demonstrates short reaction times, excellent yields, and a simple work-up procedure.
• DFT calculations confirmed the structural properties of the synthesized compound 4c, aligning with experimental findings.
• Molecular docking studies indicated significant potential for biological applications and drug design.

Conclusions:

• A facile and efficient one-pot synthetic strategy for spiroindoloquinazolines has been established.
• The synthesized compounds show promise for further investigation in medicinal chemistry and drug development.
• Computational analysis supports the experimental findings and highlights the potential utility of these compounds.