benzopyrylium

chemical compound

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June 22, 2026

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Benzopyrylium refers to a positively charged ion that is the parent compound for a large number of natural products. It is a six-membered, aromatic ring containing an oxygen atom. Benzopyrylium cations are related to pyrones, which are uncharged aromatic rings containing an oxygen atom and a carbonyl group. The benzopyrylium cation is the parent of anthocyanidines, which combine with sugars to form anthocyanins, the pigments responsible for red and blue colors in flowers and fruits. Another subgroup, anthoxanthins, provides yellow to reddish-orange colors and are derivatives of flavone.1

A related term, benzpyrinium, refers to a substituted pyridinium ion, which is a positively charged ion derived from pyridine.2

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heterocyclic compound
Six-membered rings with one heteroatom
The benzopyrylium cation is the parent of a large number of natural products. Chroman, or 3,4-dihydro-2H-1-benzopyran, is itself not found in nature, but the chroman unit is present in many natural products. Vitamin E (α-tocopherol), a substituted chroman, is found in plant oils and the leaves…
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The benzopyrylium cation is the parent of a large number of natural products. Chroman, or 3,4-dihydro-2H-1-benzopyran, is itself not found in nature, but the chroman unit is present in many natural products. Vitamin E (α-tocopherol), a substituted chroman, is found in plant oils and the leaves…
Read More