通过对新化合物的归纳整理及生物活性的介绍，为新药的研究与开发提供参考。
By summarizing new compounds and intro during biological activity, providing reference for the new drug research and development.
新化合物有可能被撤出市场，这种风险对新药物开发具有强大抑制作用。
The risk that new compounds may be withdrawn from the market is a strong disincentive to new drug development.
为进一步扩大壳聚糖的应用范围和开发出具有优良性能的新化合物，需对壳聚糖进行各种改性研究。
In order to expand its application and develop new compounds which have good nature, various studies of the chemical modification of chitosan are necessary.
通过该课题的实施，对熊果酸及齐墩果酸结构进行修饰和改造，共计获得了23种三萜类衍生物，其中大多为新化合物。
By this research, 23 triterpenoid derivants have been prepared by structural modification of ursolic acid and oleanolic acid, and most of them are new compounds.
因此，对越来越多的新化合物的毒性进行方便、快捷和准确的预测就显得十分必要，化合物预测模型的构建在毒理学研究中具有良好的应用前景。
Today it is necessary to estimate new chemicals conveniently, quickly and precisely. The warning model of chemicals in toxicology has a favorable prospect of application.
结论：结果表明，新化合物对多种菌株有明显的抑菌活性且优于各自的母体。
Conclusion: They have more obvious antibacterial activity with their primary compounds.
结论：结果表明，新化合物对多种菌株有明显的抑菌活性且优于各自的母体。
Conclusion: They have more obvious antibacterial activity with their primary compounds.
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