Two C-3/C-3"-biflavanones named sikokianin A and sikokianin B were isolated from Wikstroemia sikokiana FRANCH. et SAV. and their structures were elucidated on the basis of spectral data.
Last. Fernão Castro Braga(UFMG: Universidade Federal de Minas Gerais)H-Index: 23
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Ouratea spectabilis is an arborous species traditionally used in Brazil as an anti-inflammatory agent. Four new (3,3″)-linked biflavanone O-methyl ethers, named ouratein A (1), B (2), C (3), and D ...
AbstractIschemic cerebral stroke is a severe cause of human death and disability. Natural products play an important role in the discovery of novel therapy for cerebral ischemia. Herein, we investi...
Last. Meng Shao(LMB: Laboratory of Molecular Biology)H-Index: 1
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Abstract A phytochemical investigation on the rhizome of Wikstroemia indica led to the isolation of thirteen phenolic compounds, including three flavonoids (1-3), three lignans (4–6), two coumarins (7, 8), one stilbene glycoside (9), one polyketide (10), one caffeoylquinic acid (11), one diarylpentanoid (12) and one benzoic acid derivative (13). The structural elucidation of these compounds was determined by using spectroscopic methods and by comparison with the literature. Compounds 2, 4, 5 and...
#1Wang Zhixin(DICP: Dalian Institute of Chemical Physics)H-Index: 4
#2Yang Qu(DICP: Dalian Institute of Chemical Physics)H-Index: 3
Last. Hongbin Xiao(Beijing University of Chinese Medicine)H-Index: 23
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Stellera chamaejasme, a famous toxic herb, has been used in traditional Chinese medicine to treat various diseases. For decades, increasing attention in modern pharmacological studies has been drawn to S. chamaejasme because of its potential anti-tumor, anti-virus, and anti-fungus activities. However, due to the intrinsic complexity of chemical constitutes, hardly any investigations formed an overall recognition for the chemical profiles of this herb. In this study, a rapid and sensitive ultra-h...
Last. Shoji Yahara(Kumamoto University)H-Index: 26
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Two new biflavonoids, 14″-O-methyldihydrodaphnodorin B (1) and 14″-O-methyldaphnodorin J (2), along with 16 known compounds, i.e., dihydrodaphnodorin B (3), daphnodorin J (4), 3″-epidihydrodaphnodorin B (5), daphnodorin B (6), neochamaejasmin B (7), sikokianin B (8), (−)-syringaresinol (9), (−)-syringaresinol 4-O-β-D-glucopyranoside (10), (+)-nortrachelogenin (11), (−)-lariciresinol (12), (−)-pinoresinol (13), syringin (14), syringinoside (15), daphnoretin (16), phorbol 13-acetate (17), and meth...
#1Wang Zhixin(DICP: Dalian Institute of Chemical Physics)H-Index: 4
#2Cheng Mengchun(DICP: Dalian Institute of Chemical Physics)H-Index: 12
Last. Hong-bin Xiao(DICP: Dalian Institute of Chemical Physics)H-Index: 2
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Abstract Bioassay-guided phytochemical studies on Stellera chamaejasme led to the isolation of two new biflavones, chamaejasmenin E (1) and chamaejasmin D (2), together with ten known compounds. The structures of new compounds were elucidated by extensive spectroscopic analyses and their absolute configurations on 2, 3, 2″ and 3″ were confirmed by TDDFT quantum chemical calculated ECD spectra combined with experimental ECD spectra. All isolated biflavones were evaluated for their cytotoxic activ...
Two new spiro-γ-lactone glycosides named microphynolide A (1) and microphynolide B (2), together with twelve known compounds including five biflavonoids namely neochamaejasmin A, neochamaejasmin B, daphnodorin B, genkwanol A and stelleranol, one bis-coumarin daphnoretin, two lignans called pinoresinol and matairesinol, one flavonoid glucoside, tiliroside, a sinapyl alcohol glucoside, syringin, and two phytosterols, β-sitosterol and β-sitosterol-3-O-glucoside, were isolated from ethyl acetate ext...
A new biflavonoid, named asteryomenin (1), as well as six known phenolic compounds, esculetin (2), 4-O-β-d-glucopyranoside-3-hydroxy methyl benzoate (3), caffeic acid (4), isoquercitrin (5), isorhamnetin-3-O-glucoside (6), and apigenin (7) were isolated from the aerial parts of Aster yomena. The structures of compounds (1–7) were identified based on 1D and 2D NMR, including 1H–1H COSY, HSQC, HMBC and NOESY spectroscopic analyses. Compounds 2–7 were isolated from this plant for the first time. Fo...
#1Jie Li(ZUCC: Zhejiang University City College)H-Index: 1
#2Jiao-Jiao Zhang(ZUCC: Zhejiang University City College)H-Index: 1
Last. Li-She Gan(ZJU: Zhejiang University)H-Index: 24
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Six 3,3″-biflavanones, including a new compound isochamaejasmenin C (1), were isolated from EtOH extracts of the roots of Stellera chamaejasme L. Their structures were elucidated on the basis of spectroscopic methods, including HR-ESI-MS and 2D NMR techniques. The absolute configurations on 2, 3, 3″, and 2″ of compounds 1, 3, and 6, which represent three geometry types of these compounds, were determined by TDDFT quantum chemical calculations of their ECD spectra. All compounds were evaluated fo...
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