Phytochemical profiling of undescribed triterpenoids from Cyclocarya paliurus leaves: structural elucidation and metabolic regulation potential - Yiwei Wu; Huizhen Yang; Wenjie Shangguan; Wenting Zhang; Long Chen; Rui Min; Xinrong Fan; Yindi Zhu; Xiaojie Zheng; Yin Xiong; Tunhai Xu (Phytochemistry, 2026)