Title:Synthetic Approaches for Pyranoquinolines: A Concise Review
Volume: 28
Issue: 8
Author(s): Angie D. Arboleda, Leydi M. Moreno and Rodrigo Abonia*
Affiliation:
- Research Group of Heterocyclic Compounds, Department of Chemistry, Universidad del Valle, Calle 13 No 100-00, A.A. 25360
Cali, Colombia
Keywords:
Pyranoquinoline derivatives, synthetic methods, biological evaluations, natural products, agrochemical industry, multicomponent cyclization.
Abstract: The pyranoquinoline frameworks have a wide distribution in natural products
and have displayed a great amplitude of biological activities, attracting the attention of
synthetic and medicinal chemists due to their usefulness in agrochemical and pharmaceutical
industries. Among the twenty possible isomeric pyranoquinoline frameworks, research
reports for only six of them that were found during the period of time covered in this review
article (i.e. 2000 to 2023). According to the literature reports during this frame of
time, the synthesis of pyranoquinoline derivatives was achieved by following three general
synthetic approaches [i.e. (i) via multicomponent cyclizations (MCC), (ii) via bimolecular
cyclizations (BMC) and via intramolecular cyclizations (IMC)], mediated by catalyst-free
conditions or by diverse environmentally friendly catalysts, in which mechanistic proposal
was discussed for several of such processes. Additionally, various obtained pyranoquinoline derivatives reported
in this review were subjected to diverse biological evaluations, such as Parkinson´s and Alzheimer´s diseases,
as antibacterials, antifungals, and anticancer drugs, among others, indicating the promising biological potential
of this class of heterocyclic structure.