本论文的第三至第六部分介绍了高效液相色谱手性流动相添加剂法拆分麻黄碱、对羟基苯甘氨酸甲酯、美托洛尔、布洛芬对映体。
In part III to VI, ephedrine, tyrosine methyl ester, metoprolol, ibuprofen enantiomeric separation with chiral additive as mobile phase by high performance liquid chromatography are presented.
白茶作为中国六大茶类之一，由于其特殊的加工工序，相较于其他茶类，保留了大量的茶多酚、茶氨酸、咖啡碱等营养成分。
White tea, as one of six tea, retains a large quantity of polyphenols, theanine, caffeine and other nutrients compared to other teas because of its unique procedures.
结论喜树碱A环的9，10位增加一个“1，4 氧嗪2 酮”六元环后，其抗肿瘤活性要比喜树碱或10 羟基喜树碱的活性降低。
Conclusion The modification of a 1,4-oxazine-2-one ring fused with positions 9 and 10 of A-ring will reduce the antitumor activity of camptothecins.
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