Chemical and Pharmaceutical Bulletin 2011
Anti-hepatitis B virus and cytotoxic diterpenoids from Isodon lophanthoides var. gerardianus.
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Four new diterpenoides, isolophanthins A-D (1-4) together with seven known abietane diterpenoides (5-11), have been isolated from Isodon lophanthoides var. gerardianus. The new diterpenoides were elucidated by spectroscopic analysis. Some of them showed significant activities against HBsAg and HBeAg of hepatitis B virus in Hep G 2.2.15 cells, as well as the human tumor cell lines, HL-60, A-549, MOLT-4, and BEL-7402.
