869377-95-7Relevant articles and documents
Synthesis and antimalarial activity of new 4-aminoquinolines active against drug resistant strains
Kondaparla, Srinivasarao,Soni, Awakash,Manhas, Ashan,Srivastava, Kumkum,Puri, Sunil K.,Katti
, p. 105676 - 105689 (2016/11/18)
In the present study we have synthesized a new class of 4-aminoquinoline derivatives via replacement of the diethylamine functionality of chloroquine (CQ) with acyclic and/or cyclic amine groups containing basic tertiary terminal nitrogen and bioevaluated them for antimalarial activity against Plasmodium falciparum in vitro (CQ-sensitive strain-3D7 & CQ-resistant strain-K1) and Plasmodium yoelii in vivo (N-67 strain). Among the series, thirteen compounds showed superior antimalarial activity against K1 strain as compared to CQ. In addition, all these analogs showed 100% suppression of parasitaemia on day 4 in the in vivo mouse model against N-67 strain when administered orally. Further, biophysical studies suggest that these compounds act on the heme polymerization target.
Enantioselective addition of vinylzinc reagents to aldehydes catalyzed by modular ligands derived from amino acids
Richmond, Meaghan L.,Sprout, Christopher M.,Seto, Christopher T.
, p. 8835 - 8840 (2007/10/03)
A series of N-acylethylenediamine-based ligands were synthesized from Boc-protected amino acids. The ligands were screened for the ability to catalyze the asymmetric addition of vinylzinc reagents to aldehydes. Three sites of diversity on the ligands were optimized for this reaction using a positional scanning approach. The optimized ligand 3d was found to catalyze the formation of 15 different (E)-allylic alcohols with enantioselectivities that ranged from 52 to 91% ee and yields that ranged from 40 to 90%. This ligand was especially effective for the reaction of aromatic aldehydes with vinylzinc reagents derived from bulky terminal alkynes. Ligand 3d catalyzed the addition of (E)-(3,3-dimethylbut-1-enyl)(ethyl)zinc to 2-naphthaldehyde to give (R,E)-4,4-dimethyl-1-(naphthalene-1-yl)pent-2-en-1-ol in 89% ee. The ee of this product could be increased to 97% through a single recrystallization.