Concise Synthesis and Antimalarial Activity of All Four Mefloquine Stereoisomers Using a Highly Enantioselective Catalytic Borylative Alkene Isomerization
作者:Jinyue Ding、Dennis G. Hall
DOI:10.1002/anie.201303931
日期:2013.7.29
isomerization/aldehyde allylboration method for the stereoselective synthesis of the antimalarial drug mefloquine was optimized, thus leading to an efficient synthesis of all four mefloquine stereoisomers and analogues (see scheme). The absolute configuration of these potent compounds was determined for the first time by using chemical synthesis.
Abstract(−)‐erythro‐Mefloquine hydrochloride was synthesized stereospecifically from commercially available (S)‐(−)‐1‐Boc‐2‐piperidinecarboxylic acid in four steps without disturbing the chiral center, and the absolute configuration of (−)‐erythro‐mefloquine hydrochloride was unambiguously determined as (11R,12S). (11S,12R)‐(+)‐erythro‐Mefloquine hydrochloride was synthesized utilizing [(S,S)‐TsDpen]Ru(p‐cymene)Cl complexes‐catalyzed enantioselective transfer hydrogenation of pyridyl ketone 7 as the key step, and the sense of asymmetric induction of 2‐pyridyl ketone 7 is opposite to that of normal ketones in the transfer hydrogenation. Our results confirm the correctness of the determination of the absolute configuration by three physical chemistry methods, and, unbelievably, the erroneous assignments by all previous five asymmetric syntheses.magnified image
Chiral Vicinal Diamines Derived from Mefloquine
作者:Dawid J. Kucharski、Rafał Kowalczyk、Przemysław J. Boratyński
DOI:10.1021/acs.joc.1c01316
日期:2021.8.6
11-aminomefloquine with an erythro configuration was obtained by conversion of 11-alcohol into azide and hydrogenation. Alkylation of a secondary amine unit was needed to arrive at diastereomeric threo-11-aminomefloquine and to introduce diversity. Most of the substitution reactions of the hydroxyl group to azido group proceeded with net retention of the configuration and involved actual aziridine or
The antimalarial drug mefloquine enhances TP53 premature termination codon readthrough by aminoglycoside G418
作者:Michael W. Ferguson、Chloe A. N. Gerak、Christalle C. T. Chow、Ettore J. Rastelli、Kyle E. Elmore、Florian Stahl、Sara Hosseini-Farahabadi、Alireza Baradaran-Heravi、Don M. Coltart、Michel Roberge
DOI:10.1371/journal.pone.0216423
日期:——
Small molecule phthalimide derivatives that can enhance the readthrough activity of G418 have also been described. To determine whether readthrough enhancers exist among drugs that are already approved for use in humans, we tested seven antimalarial drugs for readthrough of the common R213X TP53 nonsense mutation in HDQ-P1 breast cancer cells. Mefloquine induced no TP53 readthrough activity as a single