Title: pterocarpans
Long Title: IUPAC Gold Book - pterocarpans
DOI: 10.1351/goldbook.09976
Status: current

Definition
Pterocarpans are compounds derived from (6a$R$,11a$R$)-6a,11a-dihydro-6$H$-[1]benzofuro[3,2-$c$][1]benzopyran (15), and their 6a,11a-didehydro derivatives 16 are named coumestans. They are numbered systematically following the numbering rules for fused ring systems.

Source
- PAC, 2018, 90, 1429. 'Nomenclature of flavonoids (IUPAC Recommendations 2017)' on page 1434 (https://doi.org/10.1515/pac-2013-0919)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/09976/html
- json: https://goldbook.iupac.org/terms/view/09976/json
- xml: https://goldbook.iupac.org/terms/view/09976/xml

Citation: Citation: 'pterocarpans' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.09976
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Accessed: 2026-07-23T22:54:25+00:00