In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Diastereoselective Synthesis of C2′-Fluorinated Nucleoside Analogues Using an Acyclic Approach, published in 2016-11-18, which mentions a compound: 58081-05-3, Name is (R)-4-Hydroxydihydrofuran-2(3H)-one, Molecular C4H6O3, Electric Literature of C4H6O3.
Nucleoside analogs bearing a fluorine in the C2′-position have been synthesized by SN2-like cyclizations of acyclic thioaminal precursors. This strategy provides access to two scaffolds, D-1′,2′-cis-thiofuranosides and D-1′,2′-trans-furanosides, which are difficult to generate using the standard approach for nucleoside synthesis. The addition of silylated nucleobases onto model C2-fluorinated dithioacetal substrates resulted in 1,2-syn diastereoselectivity, which is consistent with the C2-F and S-alkyl moiety being in close proximity. A new series of analogs bearing a C3′ all-carbon quaternary center along with a C2′-F atom have also been synthesized using this approach and are being investigated as potential antimetabolites.
Here is just a brief introduction to this compound(58081-05-3)Electric Literature of C4H6O3, more information about the compound((R)-4-Hydroxydihydrofuran-2(3H)-one) is in the article, you can click the link below.
Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem