Cyclic @M04026@ having the iridane skeleton (1-isopropyl-2,3-di-methylcyclopentane), the traditional, but not undisputed, numbering of which is shown in the diagram.
Source: PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1344 [Terms] [Paper]
Citation: 'iridoids' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. https://doi.org/10.1351/goldbook.I03253 RISBibTexEndNote