A new analog of pyrrolezanthine from the roots of Reynoutria ciliinervis (Nakai) Moldenke.

In the present study, a new analogue of pyrrolezanthine (1) was isolated from the roots of Reynoutria ciliinervis (Nakai) Moldenke. Its structure was elucidated mainly by NMR, HR-ESI-MS and the single-crystal X-ray diffraction spectroscopic data. Meanwhile, the antimicrobial activity of compound 1 was measured, it exhibited potent antifungal activity against Sclerotinia sclerotiorum with MIC value of 31.2 μg/mL.