Structure Elucidation and Theoretical Investigation of Key Steps in the Biogenetic Pathway of Schisanartane Nortriterpenoids by Using DFT Methods

Rubrifloradilactone C (4), a novel bioactive nortriterpenoid, along with four other nortriterpenoids (1-3, 5) were isolated from Schisandra rubriflora. The structure of 4 was determined by extensive NMR spectral analysis, computational evidence by using t

We thank the reviewers for their valuable advice. This work was supported by grants from Xibuzhiguang Project from CAS to W-L. Xiao and Cooperation Fund of CAS (YZ-06-01), the National Natural Science Foundation of China (30770235), the Yong Academic and