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Enmein type diterpenoids from Isodon japonica
1Department of Chemistry, Shaanxi Normal University, 710062, Xi'an, People's Republic of China. baolinli@snnu.edu.cn
Phytochemistry
|September 29, 2001
Abstract:
Two enmein type diterpenoids, taibaijaponicains A and B, were isolated from the ethanol extract of the leaves and branches of Isodon japonica. Their structures are designated as 6beta,11alpha-dihydroxy-16alpha-methoxymethyl-6,20-epoxy-6,7-seco-ent-kaur-15-one-1,7-olide and 3beta-acetoxy-6beta,11alpha-dihydroxy-16alpha-methoxymethyl-6,20-epoxy-6,7-seco-ent-kaur-15-one-1,7-olide, respectively, on the basis of detailed spectroscopic analyses.