Hematin crystallization is the primary mechanism of heme detoxification in malaria parasites and the target of the quinoline class of antimalarials. Despite numerous studies of malaria pathophysiology, fundamental questions regarding hematin growth and inhibition remain. Among them are the identity of the crystallization medium in vivo, aqueous or organic; the mechanism of crystallization, clas...

The title compound, C(19)H(16)FNO, crystallizes with two independent mol-ecules in the asymmetric unit. In the two mol-ecules, the dihedral angles between the benzene and quinoline rings are 72.6 (5) and 76.2 (5)°, between the cyclo-propane and quinoline rings they are 65.2 (5) and 66.0 (5)°, and between the benzene and cyclo-propane rings they are 25.9 (5) and 33.9 (5)°. There are inter-molecu...

The antileishmanial efficacy of four novel quinoline derivatives was determined in vitro against Leishmania chagasi, using extracellular and intracellular parasite models. When tested against L. chagasi-infected macrophages, compound 3b demonstrated 8.3-fold greater activity than did the standard pentavalent antimony. No significant activity was found for compounds 3a, 4a, and 4b. The antilesih...

In the title compound, C24H18ClN3, the di-hydro-quinazoline and methyl-substituted quinoline benzene rings make a dihedral angle of 78.18 (4)° and form dihedral angles of 45.91 (5) and 79.80 (4)°, respectively, with the phenyl ring. The dihedral angle between the phenyl ring of di-hydro-quinazoline and the methyl-substituted benzene ring of quinoline is 78.18 (4)°. The crystal packing can be de...

Ever since the idea arose that melatonin might promote sleep and resynchronize circadian rhythms, many research groups have centered their efforts on obtaining new melatonin receptor ligands whose pharmacophores include an aliphatic chain of variable length united to an N-alkylamide and a methoxy group (or a bioisostere), linked to a central ring. Substitution of the indole ring found in melato...

In the title compound, C(28)H(21)ClN(2)O(3), the quinoline ring system is essentially planar with a maximum deviation of 0.0436 (17) Å. The isoxazole and cyclo-hexane rings adopt envelope conformations. The isoxazole ring is almost orthogonal to both the quinoline ring system and the cyclo-hexane ring, making dihedral angles of 85.75 (8) and 81.46 (9) °, respectively. The O atom deviates signif...

In the title compound, C(17)H(13)NO(2), two mol-ecules crystallize in the asymmetric unit. The dihedral angle between the mean planes of the quinoline and benzene rings are 78.3 (4) and 88.2 (3)°. The carboxyl-ate group is twisted slightly from the quinoline ring by 7.1 (2) and 13.3 (4)°, respectively. In the crystal, weak C-H⋯O inter-actions are observed. Further stabilization is provided by w...

The title compound, C(9)H(7)IN(+)·Cl(-)·2H(2)O, was obtained during the synthesis of 8-iodo-quinoline from 8-amino-quinoline using the Sandmeyer reaction. The 8-iodo-quinolinium ion is almost planar. Solvent water mol-ecules and chloride ions form a hydrogen-bonded chain along the c axis via O-H⋯Cl links. The 8-iodo-quinolinium ions, which are packed along the c axis with cationic aromatic π-π ...

In the reaction of pyridine-2-carb-oxy-lic acid and stannic chloride in the presence of 2-methyl-8-hy-droxy-quinoline, the 2-methyl-8-hy-droxy-quinoline is protonated, yielding the title salt, (C(10)H(10)NO)[SnCl(4)(C(6)H(4)NO(2))]. The Sn(IV) atom in the anion is N,O-chelated by a pyridine-2-carboxyl-ate in a cis-SnNOCl(4) octa-hedral geometry. The cation is linked to the anion by an O-H⋯O hyd...