本文通过对荣华二采区10...

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

我们以1,4-二正丙氧基-2,5-双甲氧甲基苯为原料用对甲苯磺酸为催化剂在二氯甲烷中制备了1,4-双正丙氧基柱[5]芳烃,1,4-双正丙氧基......

1 Introduction The remarkable and highly diverse biological activities exhibited by proteins rely on the unique capacity......

1IntroductionChiral recognition of substrates is one of the most characteristic phenomena of biological activity. And on......

Three novel C2-symmetric macrocycles containing pyridyl units have been prepared by the cyclic condensation of chiral di......

On the basis of the C-C coupling reactions of dibenzo [ fg, op ] naphthacene bistriflate, which was obtained by the cond......

采用模板导向法高产率地合成了两个含长链亚烷基桥的芳炔类共轭大环．通过四碘化合物与单保护双炔化合物的四重Hagiraha偶合反应构建......

大环结构修饰位点多,并且本身具有多样性与新颖性。这些特点使得大环结构作为母核或者基本结构单元,正在药物研究开发中得到越来越......