Mengyun Wang, Sai Jiang, Nusrat Hussain, Salman Zafar, Qingling Xie, Feibing Huang, Linxi Mao, Bin Li, Yuqing Jian, Wei Wang
A pair of 3,4- seco -cycloartane triterpenoid isomers with a rare peroxy bridge, namely, xuetonins A and B ( 1 and 2 ), four new lignans xuetonlignans A-D ( 3 - 6 ), a new sesquiterpene xuetonpene ( 7 ), and a new natural product xuetonin C ( 8 ), along with 43 known compounds, were obtained from the leaves of Tujia ethnomedicine, Kadsura heteroclita . Their structures and configurations were determined with the help of a combination of 1D- and 2D-NMR, HRESIMS spectra, electronic circular dichroism (ECD), and X-ray diffraction data...
2022: Frontiers in Chemistry