Thunberginol B is an isocoumarin found in Hydrangeae Dulcis Folium, the processed leaves of Hydrangea macrophylla var. thunbergii.[1]

References

  1. ^ Matsuda, H.; Wang, Q.; Matsuhira, K.; Nakamura, S.; Yuan, D.; Yoshikawa, M. (2008). "Inhibitory Effects of Thunberginols A and B Isolated from Hydrangeae Dulcis Folium on mRNA Expression of Cytokines and on Activation of Activator Protein-1 in RBL-2H3 Cells". Phytomedicine. 15 (3): 177–184. doi:10.1016/j.phymed.2007.09.010. PMID 17950587.