Synthesis, characterization, stereochemistry and antibacterial activity of N -acyl-2,4,6,8-tetraphenyl-3,7-diazabicyclo[3.3.1]nonanes
作者:S. Ponnuswamy、S. Pushpalatha、A. Akila、B. Raghuvarman、S. Aravindhan
DOI:10.1016/j.molstruc.2016.07.014
日期:2016.12
1]nonanes 3–5 have been synthesized. The structural characterization and the conformational preferences of the compounds 3–5 have been carried out using IR, 1D and 2D NMR spectral data. The NMR spectral data indicate that the N-acyl-2,4,6,8-tetraphenyl-3,7-diazabicyclo[3.3.1]nonanes 3–5 prefer to exist in twin-chair conformation with partial flattening at amide nitrogen end. In order to avoid A1,3-strain
摘要 合成了三种新的 N-酰基-2,4,6,8-四苯基-3,7-二氮杂双环[3.3.1]壬烷 3-5。化合物 3-5 的结构表征和构象偏好已使用 IR、1D 和 2D NMR 光谱数据进行。NMR谱数据表明,N-酰基-2,4,6,8-四苯基-3,7-二氮杂双环[3.3.1]壬烷3-5更倾向于以酰胺氮端部分扁平化的双椅构象存在. 为了避免A1,3-应变与共面酰基,酰胺氮端的苯基被迫占据轴向取向。N-二氯乙酰基-2,4,6,8-四苯基-3,7-二氮杂双环[3.3.1]壬烷 4 的 X 射线晶体结构也支持固态的双椅构象。此外,化合物 2-5 的抗菌活性已被实现。