Selaginellin A and B, two novel natural pigments isolated from Selaginella tamariscina
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摘要Two new unusual natural pigments were first isolated from the whole herbs of Selaginella tamariscina. The structure of selaginellin A (1) was established as (R,S)-4-[(4'-hydroxy-3-((4-hydroxyphenyl)ethynyl)biphenyl-2-yl)(4-hydroxvphenyl)methylene]-2,5-cyclohexadien-1-one and selaginellin B (2) as (R,S)-4-[4'-methoxy-4-(methyl)-3-((4-methoxyphenyl)ethynyl)biphenyl-2 -yl)(4-methoxyphenyl)methylene]-2,5-cyclohexadien-1-one, along with four known biflavonoids, amentoflavone (3), hinokiflavone (4), heveaflavone.(5), and 7 ''-O-methylamentoflavone (6). Their chemical structures were elucidated by spectral analysis of electrospray ionization mass spectroscopy (ESI-MS), one-dimensional nuclear magnetic resonance spectroscopy (1D-NMR) and two-dimensional-nuclear magnetic resonance spectroscopy (2D-NMR) including H-1-NMR, C-13-NMR, distortionless enhancement by polarization transfer (DEPT) and heteronuclear multiple bond coherence (HMBC), and singlecrystal X-ray diffraction techniques.
著者Cheng XL, Ma SC, Yu JD, Yang SY, Xiao XY, Hu JY, Lu Y, Shaw PC, But PPH, Lin RC
期刊名稱Chemical and Pharmaceutical Bulletin
出版年份2008
月份7
日期1
卷號56
期次7
出版社Pharmaceutical Society of Japan (公益社団法人日本薬学会)
頁次982 - 984
國際標準期刊號0009-2363
語言英式英語
關鍵詞Selaginella tamariscina; selaginellin A; selaginellin B
Web of Science 學科類別Chemistry; Chemistry, Medicinal; CHEMISTRY, MEDICINAL; Chemistry, Multidisciplinary; CHEMISTRY, MULTIDISCIPLINARY; Pharmacology & Pharmacy; PHARMACOLOGY & PHARMACY

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