Diterpenoid alkaloids from Delphinium trichophorum

Three new hetisine type C-20-diterpenoid alkaloids, named as trichophorines A-C (1-3), were isolated from Delphinium trichophorum, together with nine known alkaloids (4-12). Their structures were elucidated on the basis of spectroscopic data (1D, 2D NMR, single-crystal X-ray, and HR-ESI-MS). All compounds were evaluated for the inhibitory activities against LPS induced NO production in RAW 264.7 macrophage cells, and none of them showed considerable inhibitory activity.

Automated summary

Three new hetisine type C-20-diterpenoid alkaloids, trichophorines A-C (1-3), were isolated from Delphinium trichophorum, along with nine known alkaloids (4-12). Their structures were determined using spectroscopic methods. None of the compounds showed significant inhibitory activity against LPS-induced NO production in RAW 264.7 macrophage cells.