Seven new 3,4-dihydro-furanocoumarin derivatives from .

Objective: To study the chemical constituents of the roots of , a well-known Chinese herbal medicine named Baizhi in Chinese.

Methods: Compounds were separated by various chromatographies, and the structures of new compounds were elucidated based on the analysis of their spectroscopic and spectrometric data (1D, 2D NMR, HRESI MS, IR, and UV). The absolute configurations of new compounds were determined by the calculated electronic circular dichroism and chemical derivatization.

Two new diterpenoids from MT-12, an endophytic fungus isolated from .

Two new diterpenoids, penicichrysogene A () and penicichrysogene B (), were isolated from the solid substrate fermentation cultures of MT-12, an endophytic fungus isolated from the medicinal plant of . Their structures were elucidated on the basis of extensive spectroscopic and spectrometric data (1D and 2D NMR, UV, IR, and HRESIMS). The absolute configurations of and were assigned on the basis of experimental and calculated electronic circular dichroism spectra.