Journal
MOLECULES
Volume 16, Issue 7, Pages 5833-5839Publisher
MDPI AG
DOI: 10.3390/molecules16075833
Keywords
Flos Daturae; Datura metel L.; withanolide lactones
Funding
- Major State Basic Research Development Program of China (973 Program) [2006CB504708]
- National Natural Science Foundation of China [30371736, 30672633]
- National Excellent Doctoral Dissertation of China [200980]
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Chemical investigation of the 50% ethanol eluate fraction from a macroporous resin of flowers of Datura metel L. collected in the Jiangsu Province of China resulted in the isolation of two new withanolides, baimantuoluoline G (1) and baimantuoluoside H (2). Their structures were elucidated as (12 beta,6 beta,22R)-1,10-seco-6,12,27-trihydroxy-26-oxowitha-3,5,24-trienolide-1-oic acid-epsilon-lactone (1) and (5 beta,6 alpha,12 beta,22R)-5,6,12,27-tetra-hydroxy-1,26-dioxo-witha-2,24-dienolide-27-O-beta-glucopyranoside (2) on the basis of extensive spectroscopic analysis (1D, 2D-NMR and HRESIMS) and chemical studies.
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