1, 4-dihydropyridines and its derivatives are an important class of heterocyclic scaffolds of low molecular weight. Dihydropyridines act as calcium-channel blockers. They have been used for the treatment of a variety of cardiovascular diseases due to their potential antihypertensive, anti-angina, vasodilator, and cardiac depressant activities. They show antibacterial, anticancer, anti-leishmanial, anticoagulant, anticonvulsant, anti-tubercular, antioxidant, antiulcer, and neuroprotective properties. The reaction to produce 1, 4-dihydropyridines (1, 4-DHPs) was reported by Arthur Hantzsch. This review article will throw light on some green attempts done to improve the synthesis of 1, 4-Dihydropyridine derivatives via Hantzsch reaction.
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