title: Microwave-assisted solution-phase synthesis and DART-mass spectrometric monitoring of a combinatorial library of indolin-2,3-dione schiff bases with potential antimycobacterial activity.
abstract: A combinatorial library composed of eleven hydrazides A-K and eleven indolin-1,2-dione derivatives 1-11 has been designed to formally generate sublibraries of 22 mixtures, M(1)-M(22) comprising of 121 Schiff bases, A-K(1-11). The designed library has been synthesized by the solution-phase method and microwave-assisted synthetic techniques. The formation of individual compounds of each mixture was confirmed by Direct Analysis in Real Time (DART) as ionization technique connected to an Ion Trap as a mass detector. The synthesized mixtures were evaluated for their antimycobacterial activity against four Mycobacterium strains; M. intercellulari, M. xenopi, M. cheleneoi and M. smegmatis. Variable antimycobacterial activity was revealed with the investigated mixtures and maximum activity was shown by M(8), M(10), M(11), and M(15) with MIC values of 1.5, 3.1, 6.2 and 0.09 μg/mL, respectively. Application of the indexed method of analysis on these active mixtures revealed that compounds D(8), D(10) and D(11) may contribute to the activity of the tested mixtures.
authors.affiliation: Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia. fadl@ksu.edu.sa
authors.forename: Tarek
authors.initials: T
authors.lastname: Aboul-Fadl
authors.forename: Hatem A
authors.initials: HA
authors.lastname: Abdel-Aziz
authors.forename: Adnan
authors.initials: A
authors.lastname: Kadi
authors.forename: Pervez
authors.initials: P
authors.lastname: Ahmad
authors.forename: Tilal
authors.initials: T
authors.lastname: Elsaman
authors.forename: Mohamed W
authors.initials: MW
authors.lastname: Attwa
authors.forename: Ibrahim A
authors.initials: IA
authors.lastname: Darwish
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D020650:Combinatorial Chemistry Techniques; D007211:Indoles / Q000138:chemical synthesis*; D013058:Mass Spectrometry; D008872:Microwaves; D009161:Mycobacterium / Q000187:drug effects*; D012545:Schiff Bases / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D054852:Small Molecule Libraries / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D007211:Indoles; D012545:Schiff Bases; D054852:Small Molecule Libraries; C057812:indoline