梨小食心虫性信息素新的合成方法

以戊炔和庚二醇为原料,分别经过取代、三键还原和乙酰基化等五步合成目标化合物,收率为24.6%,产物结构经NMR、MS分析得到证实。该方法路线短,副产物少,操作简单。     

苯-无水三氯乙醛法合成结晶玫瑰工艺条件的研究

研究了利用苯 -无水三氯乙醛法合成结晶玫瑰的工艺条件 ,讨论了影响三氯甲基苄醇和三氯甲基苄醇乙酸酯合成的各种因素 ,并得到了最佳条件下产物的收率     

固体超强酸TiO2/SO42-催化合成羟基乙酸酯

本文用固体超强酸 Ti O2 /SO42 -催化合成了羟基乙酸酯。反应时间为 4 h,产物纯化简单 ,其中几个酯得到收率达 83 %以上     

硫酸铁铵催化合成乙酸酯

研究了十二水合硫酸铁铵催化下乙酸与不同醇的酯化作用，结果表明，硫酸铁铵的催化活性良好，本不地具有操作方便，反应温和，无腐蚀和无废酸排放等优点。     

Programmed cell death features in apple suspension cells under low oxygen culture

Suspension-cultured apple fruit cells (Malus pumila Mill. cv. Braeburn) were exposed to a low oxygen atmosphere to test whether programmed cell death (PCD) has a role in cell dysfunction and death under hypoxic conditions. Protoplasts were prepared at various times after low oxygen conditions were established, and viability tested by triple staining with fluorescein diacetate (FDA), propidium iodide (PI) and Hoechst33342 (HO342). DNA breakdown and phosphatidylserine exposure on the plasma membrane were observed using terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL), and annexin V binding. About 30% of protoplasts from cells after 48 h under low oxygen showed an increased accumulation of HO342, indicating increased membrane permeability. Positive TUNEL and annexin V results were also only obtained with protoplasts from cells under low oxygen. The results suggest that apple celi death under low oxygen is at least partially PCD mediated, and may explain tissue breakdown under controlled atmosphere (low oxygen) conditions in apple fruit.     

2—甲基—4—（对甲氧基苯基）—2—丁醇及其乙酸酯的合成

以茴香基丙酮为原料,经与碘甲烷制备的格氏试剂反应制备2－甲基－4－（对甲氧基苯基）－2－丁醇,然后在催化剂作用下用醋酐乙酰化得到相应的酯。     

狭基香茶菜化学成分的研究

从狭基香茶菜的叶和茎的乙醇提取物中分离得到７个化合物,应用波谱分析和元素分析等方法鉴定出３个化合物的化学结构,它们分别为金合欢烯、降胡萝卜素,羊毛甾醇乙酸酯．     

乙酸〔α—烷基—β—（2,2,3—三甲基—3—环戊烯基）乙基〕酯…

以α－蒎烯为原料，经环氧化等一系列反应，将α－烷基－β－（２，２，３－三甲基－３－环戊烯基）乙醇酯化得到乙酸〔α－烷基－β－（２，２，３－三甲基－３－环戊烯基）乙然〕酯共９个新化合物，通过波谱及色谱确定了它们的结构及含量。     

还阳参化学成分研究

研究还阳参的化学成分。采用无水乙醇浸泡提取制得浸膏,再将浸膏加水混悬后依次用石油醚、乙酸乙酯和正丁醇萃取,制得各层提取物。用柱层析、高效液相色谱等分离方法进行分离,得到5种单体化合物,经^1HNMR、^13CNMR确定单体化合物为叶绿素、蒲公英甾醇乙酸酯、葡萄糖、伪蒲公英甾醇乙酸酯、萨谷甾醇葡萄糖苷。