Abstract
Seven new minor monoterpene derivatives (1–7), together with six known analogues, were isolated from an aqueous decoction of the hook-bearing stems of Uncaria rhynchophylla (Gou-teng). Their structures were determined by spectroscopic data analysis and electronic circular dichroism (ECD) calculations, of which 1 was confirmed by single crystal X-ray diffraction.
Graphical Abstract
![](/cms/asset/4c24f672-25aa-49fa-8a58-e7c24007cd53/ganp_a_2061961_uf0001_c.jpg)
Disclosure statement
No potential conflict of interest was reported by the authors.