Daphnane diterpenoids from the stems of Trigonostemon lii and their anti-HIV-1 activity

Seven daphnane diterpenoids named trigolins A-G (1-7), along with six known diterpenoids (8-13), were isolated from an acetone extract of the stems of Trigonostemon lii. The absolute stereochemistries of compounds 1-7 were elucidated by CD spectra.