Five phenolic compounds(1-5)including four new homoisoflavanonoids,named portulacanones A-D(1-4),were isolated from the whole plants of Portulaca *** structures were identified as 2′-hydroxy-5,7-dimethoxy-3-benzyl-ch...
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Five phenolic compounds(1-5)including four new homoisoflavanonoids,named portulacanones A-D(1-4),were isolated from the whole plants of Portulaca *** structures were identified as 2′-hydroxy-5,7-dimethoxy-3-benzyl-chroman-4-one(1),2′-hydroxy-5,6,7-trimethoxy- 3-benzyl-chroman-4-one(2),5,2′-dihydroxy-6,7-dimethoxy-3-benzyl-chroman-4-one(3),5,2′- dihydroxy-7-methoxy-3-benzylidene-chroman-4-one(4)and 2,2′-dihydroxy-4′,6′-dimethoxy
Chemical investigation of the methanol extract from *** yielded seven known compounds:friedelin, friedelanol,lupeol,1,7-dihydroxyxanthone（1）,1,4,8-trihydroxyxanthone（2）,1,2,8-trihydroxyxanthone（3）and physcion（4...
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Chemical investigation of the methanol extract from *** yielded seven known compounds:friedelin, friedelanol,lupeol,1,7-dihydroxyxanthone（1）,1,4,8-trihydroxyxanthone（2）,1,2,8-trihydroxyxanthone（3）and physcion（4）;that of the extract of *** also gave seven known compounds:laurenquinone A（5）, laurenquinone B（6）,xanthone V（7）,laurentixanthone C（8）,bivismiaquinone（9）,vismiaquinone（10）and vismiaquinone B（11）.Laurenquinone B（6）and xanthone V（7）were subjected to acetylation to afford two new acetylated derivatives:methyl 5,7-diacetoxy-6,11-dihydro-2,2,9-trimethyl-6,11-dioxo-2H-naphto[2,3-g]chromene-
Aims/hypothesis Advanced glycation end-products(AGEs)and its receptor RAGE(receptor for advanced glycation end-products)play important roles in the pathogenesis of diabetic nephropathy. Formation of AGEs is increased ...
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Aims/hypothesis Advanced glycation end-products(AGEs)and its receptor RAGE(receptor for advanced glycation end-products)play important roles in the pathogenesis of diabetic nephropathy. Formation of AGEs is increased under the consistently elevated levels of sugar and dicarbonyl *** compounds present in tea can trap dicarbonyl compounds and inhibit AGEs *** this study we investigated the effects of Pu-erh tea on production of AGEs and on development of diabetic nephropathy in a type 2 diabetic mouse model.
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