Structure identification of two new cerebrosides from Helicia nilagirica Beed / 药学学报

<p><b>AIM</b>To study the bioactive components from Helicia nilagirica.</p><p><b>METHODS</b>Compounds were separated with a combination of multi-chromatography. Their chemical structures were determined on the basis of spectral analysis and chemical evidence.</p><p><b>RESULTS</b>Two compounds were isolated from the leaves of Helicia nilagirica. Compound 1 was elucidated as 1-O-3-D-glucopyranosyl-(2S,3S,4R,8Z)-2-[(2'R)-2'-hyd roxylignocenoyl-amino]-8-octadecene-1, 3, 4-triol. Compound 2 was an analogue of 1.</p><p><b>CONCLUSION</b>The two compounds are new cerebrosides.</p>

Identification of the structure of two new nitro group phenolic glycosides from Schisandra propinqua (Wall. ) Baill var. intermidia A. C. Smith / 药学学报

<p><b>AIM</b>To study the bioactive components from Schisandra propinqua (Wall.) Baill var. intermidia A. C. Smith.</p><p><b>METHODS</b>Compounds were separated with a combination of multichromatography. Their chemical structures were determined on the basis of spectral analysis and chemical evidence.</p><p><b>RESULTS</b>Seven compounds were isolated from the leaves of Helicia nilagirica. The structures were elucidated as 6'-O-alpha-L-arabinofuranosylthalictoside (1), 6'-O-beta-D-apiofuranosylthalictoside (2), thalictoside (3), icariside D2 (4), prinsepiol (5), (+)-1-hydroxypinoresinol (6) and (+)-medioresinol (7).</p><p><b>CONCLUSION</b>Two compounds are new nitro phenolic glycosides.</p>