synthesized compounds were ascertained by elemental analysis and spectroscopic techniques. A comparative study of the antimicrobialactivity and cytotoxicity was carried out of the N‐protected amino acids, their esters, hydrazides, and the respective hydrazones, providing good results in cytotoxicitystudies.
salicyl-acylhydrazone units were synthesized and used to obtain coordination cages through deprotonation and coordination to gallium. These coordination cages have Ga3L2 stoichiometry and pinwheel geometry with two types of chiral centers built into their walls: stereogeniccenters at the amino acid backbones and stereoselectively induced centers at metal ions. The pinwheel geometry is unique among analogous
合成了含有氨基酸残基和水杨酰腙单元的三足手性配体,并用于通过去质子化和与镓的配位获得配位笼。这些配位笼有 Ga 3 L 2化学计量学和风车几何学在其壁中内置了两种类型的手性中心:氨基酸骨架上的立体中心和金属离子上的立体选择性诱导中心。风车几何形状在类似的笼子中是独一无二的,并且源于配体的部分柔韧性。尽管具有灵活性,但配体以高度立体选择性的方式诱导金属中心的手性,导致形成单一非对映异构体的笼。还已经证明立体选择性是笼形几何的独特特征,并导致有效的手性自分选:可以从外消旋配体的混合物中选择性地获得纯手性笼。金属中心的构型由圆二色性、TD DFT 计算和 X 射线晶体学确定。