While the job of a research scientist varies, most chemistry careers in research are based in laboratories, where research is conducted by teams following scientific methods and standards. category: chiral-nitrogen-ligands, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. In an article，Which mentioned a new discovery about 126456-43-7
The impact of moving the P1 side-chain from the beta-position to the alpha-position in norstatine-containing plasmepsin inhibitors was investigated, generating two new classes of tertiary alcohol-comprising alpha-benzylnorstatines and alpha-phenylnorstatines. Twelve alpha-substituted norstatines were designed, synthesized and evaluated for their inhibitory potencies against plasmepsin II and the plasmepsin IV orthologues (PM4) present in the digestive vacuole of all four Plasmodium species causing malaria in man. New synthetic routes were developed for producing the desired alpha-substituted norstatines as pure stereoisomers. The best compounds provided Ki values in the nanomolar range for all PM4, with a best value of 110 nM in PM4 from Plasmodium ovale. In addition, excellent selectivity over the closely related human aspartic protease Cathepsin D was achieved. The loss of affinity to Plasmodium falciparum PM4, which was experienced upon the move of the P1 substituent, was rationalized by the calculation of inhibitor-protein binding affinities using the linear interaction energy method (LIE).
The catalyzed pathway has a lower Ea, but the net change in energy that results from the reaction is not affected by the presence of a catalyst. category: chiral-nitrogen-ligands, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 126456-43-7, in my other articles.
Reference：
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis