Three diesters of exo- syn-meso-oxabicyclo (2, 2, 1 ) -hept- 5- ene- 2, 3- dicarboxylic acid and three tetraesters of tetrahydrofuran-2, 3, 4, 5-tetracarboxylic acid were synthesized and tested with enantioselective h...Three diesters of exo- syn-meso-oxabicyclo (2, 2, 1 ) -hept- 5- ene- 2, 3- dicarboxylic acid and three tetraesters of tetrahydrofuran-2, 3, 4, 5-tetracarboxylic acid were synthesized and tested with enantioselective hydrolysis catalyzed by pig liver esterase(PLE). The results of the PLEcatalyzed hydrolysis were discussed.展开更多
The increasing medicinal importance of 19-norsteroids, particularly for oral contraceptives, has stimulated intensive research to continuously find more economic methods of either partial and total direct synthesis or...The increasing medicinal importance of 19-norsteroids, particularly for oral contraceptives, has stimulated intensive research to continuously find more economic methods of either partial and total direct synthesis or indirect synthesis via estrone of this class of compound.展开更多
运用色谱分离技术,从泽泻科泽泻中分离得到7个化学成分,其结构用各种光谱技术(包括红外光谱、质谱、一维和二维核磁共振谱)鉴定为4-pyrazin-2-yl-but-3-ene-1,2-diol,烟酰胺,甘油棕榈酸酯,1-monolinolein,11-deoxyalisol,alisol A 24-ac...运用色谱分离技术,从泽泻科泽泻中分离得到7个化学成分,其结构用各种光谱技术(包括红外光谱、质谱、一维和二维核磁共振谱)鉴定为4-pyrazin-2-yl-but-3-ene-1,2-diol,烟酰胺,甘油棕榈酸酯,1-monolinolein,11-deoxyalisol,alisol A 24-acetate及alisol C 23-acetate.其中,4-pyrazin-2-yl-but-3-ene-1,2-diol、烟酰胺、甘油棕榈酸酯和1-monolinolein为首次从泽泻科中获得.展开更多
基金Supported by the National Natural Science Foundation of China and Schweizerischer National fonds Zur Forderunyder wissenschaft
文摘Three diesters of exo- syn-meso-oxabicyclo (2, 2, 1 ) -hept- 5- ene- 2, 3- dicarboxylic acid and three tetraesters of tetrahydrofuran-2, 3, 4, 5-tetracarboxylic acid were synthesized and tested with enantioselective hydrolysis catalyzed by pig liver esterase(PLE). The results of the PLEcatalyzed hydrolysis were discussed.
文摘The increasing medicinal importance of 19-norsteroids, particularly for oral contraceptives, has stimulated intensive research to continuously find more economic methods of either partial and total direct synthesis or indirect synthesis via estrone of this class of compound.
文摘运用色谱分离技术,从泽泻科泽泻中分离得到7个化学成分,其结构用各种光谱技术(包括红外光谱、质谱、一维和二维核磁共振谱)鉴定为4-pyrazin-2-yl-but-3-ene-1,2-diol,烟酰胺,甘油棕榈酸酯,1-monolinolein,11-deoxyalisol,alisol A 24-acetate及alisol C 23-acetate.其中,4-pyrazin-2-yl-but-3-ene-1,2-diol、烟酰胺、甘油棕榈酸酯和1-monolinolein为首次从泽泻科中获得.
