Abstract: Salvianolic acid F (1a) and przewalskinic add A(2a) are phenolic acids isolated from the traditional and herbal Chinese medicines Salvia miltiorrhiza (1) and S. przewalskii (2). The chemical structures of th...Abstract: Salvianolic acid F (1a) and przewalskinic add A(2a) are phenolic acids isolated from the traditional and herbal Chinese medicines Salvia miltiorrhiza (1) and S. przewalskii (2). The chemical structures of these two compounds represent the main carbon skeletons of the biologically active depsides salvianolicacid A and B isolated from S. miltionhiza (3.4). The present paper reports the synthesis of the methyl ether protected phenolic acids. tetramethyl salvianolic acid F(1b) and trimethyl prsewalskinic acid A(2b).展开更多
Abstract: Two new depsidic glycosides salviaflasied and its methyl ester were isolated from the aqueous extract of Salvaia flava. their structures were elucidated by spectral analysis, especially by 2D NMR analysis.
A derivative of 2-arylbenzofuranoid pattern fashioned after the naturally occurring isolates from Salviamiltiorrhiza was synthesized by Perkin condensation and oxidative ring closure.
文摘Abstract: Salvianolic acid F (1a) and przewalskinic add A(2a) are phenolic acids isolated from the traditional and herbal Chinese medicines Salvia miltiorrhiza (1) and S. przewalskii (2). The chemical structures of these two compounds represent the main carbon skeletons of the biologically active depsides salvianolicacid A and B isolated from S. miltionhiza (3.4). The present paper reports the synthesis of the methyl ether protected phenolic acids. tetramethyl salvianolic acid F(1b) and trimethyl prsewalskinic acid A(2b).
文摘Abstract: Two new depsidic glycosides salviaflasied and its methyl ester were isolated from the aqueous extract of Salvaia flava. their structures were elucidated by spectral analysis, especially by 2D NMR analysis.
文摘A derivative of 2-arylbenzofuranoid pattern fashioned after the naturally occurring isolates from Salviamiltiorrhiza was synthesized by Perkin condensation and oxidative ring closure.
