lignans

also contains definition of: neolignans
https://doi.org/10.1351/goldbook.L03527
Plant products of low molecular weight formed primarily from oxidative coupling of two p-propylphenol moieties at their β carbon atoms; products with units coupled in other ways are neolignans, e.g.
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1347 [Terms] [Paper]