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Structures of two new diterpenoid dimers from bulbs of Fritillaria ebeiensis
1Faculty of Pharmaceutical Sciences, Tongji Medical University, Wuhan, China.
Abstract:
Two new ent-kauranoid diterpenoid dimers, fritillebin C (1) and fritillebin D (2), were isolated from the bulbs of Fritillaria ebeiensis G.D. Yu and G.Q. Ji. Their structures were determined to be ent-16beta-hydroxy-kauran-17-yl ent-16beta3-kauran-17-oate (1); ent-16alpha-hydroxy-kauran-17-yl ent-16beta-kauran-17-oate (2) by means of spectral analysis and chemical evidence.
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