New diterpenoid glucosides from Siegesbeckia pubescens |
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| Authors: | Jiang XIONG Qi Duan JIN Yun Long XU Kunming Institute of Botany The Chinese Academy of Sciences Kunming |
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| Affiliation: | Jiang XIONG,Qi Duan JIN,Yun Long XU* Kunming Institute of Botany,The Chinese Academy of Sciences,Kunming 650204 |
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| Abstract: | Five new diterpenoids isolated from Siegesbeckia pubescens, pubesides A~E, were established as ent-2a,15,16-trihydroxypimar-8(14)-en-2-O-b-D-glucopyranoside (1), ent-15,16,19-trihydroxypimar-8(14)-en-19-O-b-D-glucopyranoside (2), b-D-glucopyranosyl-ent-15,16-dihydroxypimar-8(14)-en-19-oiclate (3), ent-2-oxo-15,16,19-trihydroxypimar-8(14)-en-19-O-b-D-gluco-pyranoside (4), ent-2-oxo-15,16,19-trihydroxypimar-8(14)-en-19-O-b-D-glucopyranoside-15,16-acetonide (5) by 1D and 2D NMR techniques. |
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