Chemistry Heterocyclic Building Blocks Pyrans
Pyran, also known as oxine, is a heterocyclic ring in chemistry that is made up of five carbon atoms and one oxygen atom, forming a non-aromatic six-membered ring that includes two double bonds.
There are two isomers of pyran that vary in the position of the double bonds, and their molecular formula is C5H6O. In 2H-pyran, the saturated carbon is situated at position 2, while in 4H-pyran, the saturated carbon is located at position 4.
While pyrans may not hold much importance in chemistry, their derivatives, such as the pyranoflavonoids, play a significant role in the realm of biological molecules.
The pyran plays a crucial role as a pharmacophore and is a constituent of bioactive substances that exhibit antitumor, antibiotic, antibacterial, antiallergic, hypolipidemic, and immunomodulatory properties.
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4-Oxo-4H-pyran-2,6-dicarboxylic acid
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2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-4H-chromen-4-one