Abstract
A novel alkaloid, hupcrispatine (1), has been isolated from the unique Chinese species Huperzia crispate Ching. The structure of hupcrispatine has been elucidated as 9-amino-6-methyl-3-quinolone on the basis of spectral evidence.
Acknowledgements
We thank Professor Li-Juan Jiang, Central South University of Forestry and Technology, Hunan, for supplying the herbs used in this study and Professor Pu-Hua Zhou for technical assistance.