Pronunciation: [pˈɪɹən] (IPA) 
The spelling of the word pyran can be a bit tricky, as it contains a combination of letters that don't necessarily correspond to their usual sounds in English. To break it down in IPA phonetic transcription, the first syllable "pyr" is pronounced /paɪr/ like "pie" with an "r" sound at the end. The second syllable "an" is pronounced /æn/ like "an" with a short "a" sound. Therefore, the correct spelling of the word pyran is /'paɪræn/.
Pyran is a chemical compound that belongs to the family of heterocyclic compounds, specifically known as oxygen-containing heterocycles. It is a six-membered ring structure, consisting of five carbon atoms and one oxygen atom. The oxygen atom occupies one of the ring positions, making pyran an oxygen heterocycle. Pyran is also referred to as a cyclic ether due to the presence of its oxygen atom.
This compound is widely utilized in the field of organic chemistry, particularly in the synthesis of various pharmaceuticals, agrochemicals, and natural products. Pyran derivatives exhibit diverse biological activities, making them important for drug discovery and development.
The term "pyran" also refers to the parent structure of pyran itself, which can serve as a template or core for building more complex organic molecules. The ring structure of pyran allows for a wide range of chemical modifications and functionalizations, enabling the creation of compounds with desired properties and activities.
Additionally, pyran compounds play a role in the flavor and fragrance industry and are used as additives to enhance the aroma and taste of various products, such as food, beverages, and perfumes.
In summary, pyran is a heterocyclic compound consisting of a six-membered ring with one oxygen atom. It is widely employed in organic synthesis, drug development, and flavoring industries.
Pyranum.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "pyran" has its origins in the field of organic chemistry. It is derived from the Greek word "pyr" (meaning fire) and the suffix "-an" (indicating an organic compound). The term "pyran" was coined to describe a class of organic compounds that have a six-membered ring containing five carbon atoms and one oxygen atom. The name "pyran" was chosen due to the resemblance of the six-membered ring to the shape of a flame, hence the association with fire.
