Five undescribed abietane-type diterpenes of Callicarpa macrophylla.

A phytochemical investigation of the medicinal plant Callicarpa macrophylla resulted in the characterization of two rare rearrangement abietane-type diterpenoids, macrophypene F-G (1-2), and three abietane diterpenoids, named macrophypene H-J (3-5). Additionally, five known diterpenoids (6-10) were identified. The structures of the newly discovered compounds were fully established through extensive analysis of HRESIMS, 1D and 2D NMR data. The absolute configurations of the isolated compounds were determined using CD comparison, chemical methods, and X-ray crystal diffraction experiments. Subsequently, all isolated diterpenoids were evaluated for their inhibitory effects on extracellular PCSK9 protein levels by PCSK9 AlphaLISA screening. Jiadfenoic acid B (6, 56.80% inhibition at 20 µM) and holophyllin F (10, 43.18% inhibition at 20 µM) significantly decreased PCSK9 protein levels in medium of HepG2 cells.

[Study on preparation of intravenous submicron emulsions of Oleum Cinnamomi oil of Miao nationality herbal].

OBJECTIVE: To study the prescription and preparation of intravenous submicron emulsion of Oleum Cinnamomi oil of Miao nationality herbal. METHOD: Using the high speed blender mixed round the Oleum Cinnamomi oil with the soybean phospholipids and Pluronic F68 as emulsifier, then using the high pressure homogenizer made the intravenous submicron emulsion of the Oleum Cinnamomi oil and investigate its grain path and distributing. RESULT: Having been done by using hydroextractor 4,500 r min(-1) 15 minutes the submicron emulsion grain path has well proportioned distribution. CONCLUSION: The preparation technology is simple and has good stability, so it can be used as a method to make the intravenous submicron emulsion of the Oleum Cinnamomi oil of Miao nationality herbal.