The pyran ring system is widely present in the animal and plant kingdom and possesses
diverse pharmacological activities. Pyran is a six-membered oxygen heterocycle with two …

Covering: December 1992 to December 2004 The review summarises natural products
containing the 2-pyrone moiety. An emphasis has been placed upon the biological activity …

The investigations in the chemistry and biology of α-pyrone (2-pyrone) are of vital
importance as they constitute an essential pharmacophore in many naturally occurring and …

Abstract Naturally occurring 5, 6-dihydro-α-pyrones have up to now not been reviewed per
se but have been included in the reviews of α-pyrones (1, 2). Since approximately 65 of …

Five-membered heterocycle derivatives with two aryl groups on adjacent positions include
several classes of natural and unnatural compounds that exhibit a variety of biological and …

Pyrrole is widely known as a biologically active scaffold which possesses a diverse nature of
activities. The combination of different pharmacophores in a pyrrole ring system has led to …

Recent synthetic and medicinal perspectives of pyrroles: An overview. Page 1 J Pharm
Chem Chem Sci 2017 Volume 1 Issue 1 17 http://www.alliedacademies.org/journal-pharmaceutical-chemistry-chemical-science …

Synthesis of natural products containing the pyrrolic ring - Natural Product Reports (RSC
Publishing) DOI:10.1039/C0NP00014K Royal Society of Chemistry View PDF VersionPrevious …

Heterocyclic compounds play a critical role in medicinal chemistry, and many available
drugs contain heterocyclic rings. A six-membered heterocyclic compound, pyridine, showed …

Abstract 4H-Pyrans and 4H-pyran-annulated heterocyclic scaffolds represent a “privileged”
structural motif well-distributed in biologically active natural products and also in promising …