ROTATIONAL BARRIERS, MOLECULAR MODELS & STEREOSELECTION

构象和立体选择性问题是这两个过程的关键因素。 了解生物学上重要化合物的作用， 合成的设计。 两个特别重要的组成部分， 总的问题是不饱和中心附近的旋转障碍， 和非键的相互作用。 建议进行详细的AB 用从头计算的方法对上述两种情况进行了计算， 对计算结果进行详细分析，然后应用 这些结果有助于开发更好的分子建模程序。 在 此外，还研究了H-和H+等试剂对构象的影响， 将探讨旋转障碍，以直接攻击 立体选择的问题。 在所有情况下，计算结果将 与实验观察有关，无论是那些已经存在的，或 计算结果提出了新的观察结果。

Problems of conformation and stereoselection are key elements in both the understanding of the role of biologically important compounds, and in the design of their synthesis. Two particularly important components of the overall problem are barriers to rotation adjacent to unsaturated centers, and non-bonded interactions. It is proposed to carry out detailed ab initio molecular orbital calculations dealing with both of the above, to make detailed analyses of the results of the calculations, and then apply the results in developing better procedures for molecular modelling. In addition, the effect of reagents such as H- and H+ on the conformations and rotational barriers will be explored in order to directly attack the problem of stereoselection. In all cases, the computational results will be related to experimental observations, either those already available, or new observations which are suggested by the results of the calculations.