title: Synthesis, antimalarial, antileishmanial, and antimicrobial activities of some 8-quinolinamine analogues.
abstract: In the present communication, newly synthesized 8-quinolinamines (25-27) related to previously reported 2-tert-butylprimaquine (2) were evaluated for their in vitro antimalarial activity against chloroquine sensitive and resistant Plasmodium falciparum strains, in vivo antimalarial activity against P. berghei infected mice, in vitro antileishmanial activity against Leishmania donovani, in vitro antimicrobial activity against various fungi and bacteria, and cytotoxicity in a panel of mammalian cell lines. No promising cytotoxicities were observed for compounds reported herein. Analogue 25 was found to exhibit curative antimalarial activity at a dose of 25 mg/kg/dayx4 in a P. berghei infected mice model, and produced suppressive activity at a lower dose of 10 mg/kg/dayx4. In vitro antileishmanial activities (IC50 and IC90) comparable to standard drug pentamidine were exhibited by all synthesized 8-quinolinamines 25-27. At the same time, promising antibacterial and antifungal activities were also observed for synthesized compounds against a panel consisting of several bacteria and fungi.
authors.affiliation: Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Sector 67, S.A.S. Nagar, Punjab 160 062, India.
authors.forename: Meenakshi
authors.initials: M
authors.lastname: Jain
authors.forename: Shabana I
authors.initials: SI
authors.lastname: Khan
authors.forename: Babu L
authors.initials: BL
authors.lastname: Tekwani
authors.forename: Melissa R
authors.initials: MR
authors.lastname: Jacob
authors.forename: Savita
authors.initials: S
authors.lastname: Singh
authors.forename: Prati Pal
authors.initials: PP
authors.lastname: Singh
authors.forename: Rahul
authors.initials: R
authors.lastname: Jain
mesh_terms: D000634:Aminoquinolines / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D000818:Animals; D000890:Anti-Infective Agents / Q000138:chemical synthesis* / Q000494:pharmacology*; D000962:Antimalarials / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D000981:Antiprotozoal Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D051379:Mice; D008826:Microbial Sensitivity Tests
chemical_list: D000634:Aminoquinolines; D000890:Anti-Infective Agents; D000962:Antimalarials; D000981:Antiprotozoal Agents; C080436:8-aminoquinoline