通过大孔树脂柱色谱、聚酰胺柱色谱、硅胶柱色谱、ODS柱色谱和制备液相等技术对山香圆叶乙醇提取物的正丁醇部位进行分离纯化,并应用核磁共振以及质谱等波谱技术进行化合物结构鉴定。从山香圆叶中分离鉴定了15个黄酮类化合物,分别为:arg...通过大孔树脂柱色谱、聚酰胺柱色谱、硅胶柱色谱、ODS柱色谱和制备液相等技术对山香圆叶乙醇提取物的正丁醇部位进行分离纯化,并应用核磁共振以及质谱等波谱技术进行化合物结构鉴定。从山香圆叶中分离鉴定了15个黄酮类化合物,分别为:argutoside F (1)、木犀草素-7-O-[α-L-吡喃鼠李糖基-(1→6)-α-L-吡喃鼠李糖基-(1→2)]-β-D-吡喃葡萄糖苷(2)、女贞苷(3)、刺槐素-7-O-[α-L-吡喃鼠李糖基-(1→6)-α-L-吡喃鼠李糖基-(1→2)]-β-D-吡喃葡萄糖苷(4)、芹菜素(5)、槲皮素(6)、槲皮素-3-O-α-L-吡喃鼠李糖基-(1→6)-β-D-吡喃葡萄糖苷(7)、野漆树苷(8)、木犀草素-7-O-α-L-吡喃鼠李糖基-(1→2)-β-D-吡喃葡萄糖苷(9)、刺槐素-7-O-α-L-吡喃鼠李糖基-(1→2)-β-D-吡喃葡萄糖苷(10)、木犀草素-7-O-β-D-吡喃葡萄糖苷(11)、木犀草素(12)、neodiosmin (13)、芹菜素-7-O-芸香糖苷(14)和槲皮素-3-O-α-L-吡喃阿拉伯糖苷(15)。其中化合物1为新化合物,化合物2、7、9、13~15为首次从该植物中获得。展开更多
The molten metal is drawn to the alternating magnetic field composed of a 10~30KHz power supply and a non-magnetizer coil,where the molten metal will float(for the sheet/strip billet) or float and be restrained(for th...The molten metal is drawn to the alternating magnetic field composed of a 10~30KHz power supply and a non-magnetizer coil,where the molten metal will float(for the sheet/strip billet) or float and be restrained(for the section bar billet) because of electromagnetic induction.During continuous movement the molten metal is appropriately cooled to keep the afterheat with the upper limited temperature of the hot working and then enters the processing machine,where it is rolled and continuously pressed into materials like the electronic component(for example,the radiator),or enters the program-controlled casting line(at which the metal semisolid slurry is replaced) for the purpose of the casting of mechanical part billets(such as billets for gears and internal and external rings of bearings).The effect of energy saving and income increase is remarkable.展开更多
文摘通过大孔树脂柱色谱、聚酰胺柱色谱、硅胶柱色谱、ODS柱色谱和制备液相等技术对山香圆叶乙醇提取物的正丁醇部位进行分离纯化,并应用核磁共振以及质谱等波谱技术进行化合物结构鉴定。从山香圆叶中分离鉴定了15个黄酮类化合物,分别为:argutoside F (1)、木犀草素-7-O-[α-L-吡喃鼠李糖基-(1→6)-α-L-吡喃鼠李糖基-(1→2)]-β-D-吡喃葡萄糖苷(2)、女贞苷(3)、刺槐素-7-O-[α-L-吡喃鼠李糖基-(1→6)-α-L-吡喃鼠李糖基-(1→2)]-β-D-吡喃葡萄糖苷(4)、芹菜素(5)、槲皮素(6)、槲皮素-3-O-α-L-吡喃鼠李糖基-(1→6)-β-D-吡喃葡萄糖苷(7)、野漆树苷(8)、木犀草素-7-O-α-L-吡喃鼠李糖基-(1→2)-β-D-吡喃葡萄糖苷(9)、刺槐素-7-O-α-L-吡喃鼠李糖基-(1→2)-β-D-吡喃葡萄糖苷(10)、木犀草素-7-O-β-D-吡喃葡萄糖苷(11)、木犀草素(12)、neodiosmin (13)、芹菜素-7-O-芸香糖苷(14)和槲皮素-3-O-α-L-吡喃阿拉伯糖苷(15)。其中化合物1为新化合物,化合物2、7、9、13~15为首次从该植物中获得。
文摘The molten metal is drawn to the alternating magnetic field composed of a 10~30KHz power supply and a non-magnetizer coil,where the molten metal will float(for the sheet/strip billet) or float and be restrained(for the section bar billet) because of electromagnetic induction.During continuous movement the molten metal is appropriately cooled to keep the afterheat with the upper limited temperature of the hot working and then enters the processing machine,where it is rolled and continuously pressed into materials like the electronic component(for example,the radiator),or enters the program-controlled casting line(at which the metal semisolid slurry is replaced) for the purpose of the casting of mechanical part billets(such as billets for gears and internal and external rings of bearings).The effect of energy saving and income increase is remarkable.
