Nan-Jin Ding

Kaurepenoid A, a 2-nor-ent-kaurane diterpenoid with P-glycoprotein-mediated reversal of multidrug resistance activity from the fungus Bipolaris sp.

Chemical research on the fungus Bipolaris sp. led to the identification of seven ent-kaurane diterpenoids, kaurepenoids A-G (1-7), marking the first isolation of such diterpenoids from this genus. Kaurepenoids A-F (1-6) represent the first 2-nor-ent-kaurane diterpenoids with a fused 5/6/6/5 tetracyclic ring system. Kau...