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- Methods Liquid chromatography and recrystallization were used to obtain the monomer of rubescensin A. 方法利用液相色谱分离技术和重结晶方法获得冬凌草中的有效成分。
- Results monomer of rubescensin A was obtained by using determinate ratio of organic regents and recrystallization. 结果在一定比例的有机溶剂洗脱下并利用重结晶可以得到冬凌草甲素纯品。
- Rubescensine A and B have many pharmacological actions,especially anticancer activity. 冬凌草甲素、乙素具有多种药理作用,尤其是抗癌活性。
- Study on the quantum chemical calculations is performed by means of MNDO method on VAX8350 computer for rubescensine A and its acetylate derivative. 本文用MNDO方法在VAX8350计算机上对冬凌草甲素及其乙酰衍生物进行了量子化学计算研究。
- There is a vein of melancholy in his character. 他的性格中有少许忧郁的气质。
- There was a long lag in forwarding mail to us. 转寄给我们的邮件晚了很久才拿到。
- A bowl of hot chicken soup is good for you. 喝一碗热鸡汤对你有好处。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- A country must have the will to repel any invader. 一个国家得有决心击退任何入侵者。
- A fire was burning in the grate. 火在壁炉中燃烧着。
- Keywords rubescensin A;Rabdosia;new drug; 冬凌草甲素;香茶菜;新药开发;
- They cleaved a path through the wilderness. 他们在荒原中开辟出一条路。
- They denounced him to the police as a criminal. 他们向警方告发他是罪犯。
- This place doesn't have a very savory reputation. 这个地方的名声可不太好。
- This strain of wheat can grow during a cold spring. 这种小麦可以在寒冷的春天生长。
- Have a glass of beer to rinse your dinner down. 喝杯啤酒把你吃的晚饭冲下去。
- I am a hundred percent in agreement with you. 我百分之百同意你的看法。
- A simple test will show if this is real gold. 简单的试验就能证明这是否是真金。
- I am well aware that this is a tough job. 我深知这是一件棘手的工作。
- I bought a pair of tan leather shoes the other day. 前几天我买了双棕褐色的皮鞋。
