A series of chiral sulfonamides containing the 2-azabicycloalkane scaffold were prepared from aza-Diels–Alder cycloadducts through their conversion to amines based on 2-azanorbornane or the bridged azepane skeleton, followed by the reaction with sulfonyl chlorides. The cytotoxic activity of the obtained bicyclic derivatives was evaluated using human hepatocellular carcinoma (HCC), medulloblastoma (MB)
conditions with various nucleophiles led to a series of chiral-bridged azepanes with configuration at C-4 dependent on the configuration of the starting alcohol. High yielding, stereoselective ringexpansion to novel 2-azabicyclo[3.2.1]octane system occurred via aziridinium intermediates, which were specifically opened by nucleophilic attack at the more substituted carbon.
Chiral scaffolds of 2-azabicyclo[2.2.1]heptane and 2-azabicyclo[3.2.1]octane were used for the construction of new modular catalysts containing complexing moieties pyridine, 2,2′-bipyridine and 1,10-phenanthroline appended by an imine linkage. The coordination abilities of the new ligands towards Zn(II) were investigated using NMR and UV spectroscopy. The plausible structures of the [ZnL2]2+ and [ZnLXn](2−n)+
2-氮杂双环[2.2.1]庚烷和2-氮杂双环[3.2.1]辛烷的手性支架用于构建新的模块催化剂,该催化剂包含配位吡啶,2,2'-联吡啶和1,10-菲咯啉亚胺键。利用NMR和UV光谱研究了新配体对Zn(II)的配位能力。通过比较实验和DFT计算的NMR光谱,可以确定形成的[ZnL 2 ] 2+和[ZnLX n ] (2- n)+配合物的合理结构。[ZnLX n ] (2- n)+的催化应用在与芳族醛酮的不对称醛醇缩合反应型复合物所产生的过量的相应的顺式中高达> 98%ee的-aldols。