A new phenolic acid from Zanthoxylum nitidum var. tomentosum (Rutaceae) and its chemotaxonomic significance

A new compound, nitomentosin (1), along with sixteen known compounds (2–17), were isolated from Zanthoxylum nitidum var. tomentosum (Rutaceae). The structure of compound 1 including absolute configurations was determined by detailed spectroscopic information (HRESIMS and NMR) and from the electronic circular dichroism (ECD) spectra. From the present investigation, compound 3 is a new natural compound although it has been reported previously as a synthetic substance, and compound 15 is found for the first time in a plant. All these compounds except 2, 5–10 and 12 were isolated from Z. nitidum for the first time. Furthermore, the chemotaxonomic significance of the isolated compounds is discussed. [Display omitted] •Seventeen compounds (1–17) were isolated from Zanthoxylum nitidum var. tomentosum (Rutaceae).•Their structures were determined by spectroscopic data and ECD analyses.•Compounds 1, 3–4, 11 and 13–17, were acquired from Z. nitidum for the first time.•Chemotaxonomic significance of these compounds was described.