芦笋茎皮化学成分的研究

从芦笋茎皮中分得７个化合物，经理化常数测定和光谱分析，分别鉴定为：十六烷酸 （Ⅰ），二十四烷酸（Ⅱ），β－谷甾醇（Ⅲ），胡萝卜苷（Ⅳ），亚莫皂苷元－３－Ｏ－Ｌ－鼠李吡喃糖（１→４）β－Ｄ－ 葡萄吡喃糖苷（Ⅴ），ａｓｐａｒａｓａｐｏｎｉｎｌ（Ⅵ），ａｓｐａｒａｓａＰｏｎｉｎＩ（ Ⅵ）。 Ⅴ为首次从该属植物中分得的螺 旋皂苷。

Synthesis of a novel series of amino acid prodrugs based on tegafur and evaluation of their antitumor activity

As an oral chemotherapy prodrug,tegafur,can be converted to 5-fluorouracil,which is activated to kill tumor cells mainly by the inhibition of thymidylate synthase.In the present study,we synthesized 20 new tegafur derivatives containing amino acid ester groups by substitution,hydrolysis,and condensation.Their structures were confirmed by 1H NMR,13C NMR,and H RMS,and their inhibitory effects on tumor cell growth were studied.The results showed that some of the compounds had good anti-tumor activity.