An expeditious synthesis of cytotoxic pyrroloisoquinoline derivatives.

A number of pyrroloisoquinolines have been prepared by reaction of 5-nitroisoquinoline with vinylmagnesium bromide followed by N-alkylation with the appropriate 2-chloro-N,N-dialkylethylamine. Their cytotoxicity was evaluated in a number of ovarian cell lines and compared to their analogous isomeric pyrroloquinolines. Two of the new compounds, 7c and 7d, are selective toward the A2780 cisplatin-resistant line. (C) 2002 Elsevier Science B.V. All rights reserved

A New Ring-Forming Methodology for the Synthesis of Bioactive Pyrroloquinoline Derivatives

A new, efficient, two-step method for the synthesis of bioactive pyrroloquinolines is described. Readily available nitroquinolines, bearing the nitro moiety in the carbocyclic ring, are treated with 4-chlorophenoxyacetonitrile in the presence of potassium tert-butoxide/THF to give the analogous vicarious nucleophilic substitution products (5, 8 and 11). These, in turn, are subjected to catalytic hydrogenation to produce 1H-pyrrolo[2,3-f]quinoline (6), 3H-pyrrolo[3,2-f]quinoline (9) and 1H-pyrrolo[3,2-h]quinoline (12) in good yields and relatively short reaction times. The differential activity of two N-alkylated 1H-pyrrolo[2,3-f]quinolines (1) in cisplatin resistant cell lines compared to the corresponding parent lines suggests that these might be useful leads for developing agents for use in drug resistant diseases

A Facile Synthesis of C2-Substituted Pyrrolo[2,3-f]quinolines with Cytotoxic Activity

An expeditious four-step synthesis of the 1H-pyrrolo[2,3-f]quinoline-2- carboxamides (5a-h) is described. Readily available 6-quinolinecarboxaldehyde is converted to the parent acid (6) by nucleophilic attack of the azido-ester (9) and intramolecular cyclization of (10) followed by hydrolysis of the methyl ester (11). The cytotoxicity of the target molecules (5a-h) was evaluated in four tumour cell lines in vitro. One compound (5d) showed sufficient activity (IC50 = 10.2 ?M) in the human non-small cell lung cell line NSCLC-N16-L16 to be worthy of further study

The HLA-net GENE[RATE] pipeline for effective HLA data analysis and its application to 145 population samples from Europe and neighbouring areas

In this review, we present for the first time an integrated version of the Gene[rate] computer tools which have been developed during the last 5 years to analyse human leukocyte antigen (HLA) data in human populations, as well as the results of their application to a large dataset of 145 HLA-typed population samples from Europe and its two neighbouring areas, North Africa and West Asia, now forming part of the Gene[va] database. All these computer tools and genetic data are, from now, publicly available through a newly designed bioinformatics platform, HLA-net, here presented as a main achievement of the HLA-NET scientific programme. The Gene[rate] pipeline offers user-friendly computer tools to estimate allele and haplotype frequencies, to test Hardy-Weinberg equilibrium (HWE), selective neutrality and linkage disequilibrium, to recode HLA data, to convert file formats, to display population frequencies of chosen alleles and haplotypes in selected geographic regions, and to perform genetic comparisons among chosen sets of population samples, including new data provided by the user. Both numerical and graphical outputs are generated, the latter being highly explicit and of publication quality. All these analyses can be performed on the pipeline after scrupulous validation of the population sample's characterisation and HLA typing reporting according to HLA-NET recommendations. The Gene[va] database offers direct access to the HLA-A, -B, -C, -DQA1, -DQB1, -DRB1 and -DPB1 frequencies and summary statistics of 145 population samples having successfully passed these HLA-NET 'filters', and representing three European subregions (South-East, North-East and Central-West Europe) and two neighbouring areas (North Africa, as far as Sudan, and West Asia, as far as South India). The analysis of these data, summarized in this review, shows a substantial genetic variation at the regional level in this continental area. These results have main implications for population genetics, transplantation and epidemiological studies. © 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd 83 5 May 2014 10.1111/tan.12356 Review article Review article © 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.SCOPUS: re.jinfo:eu-repo/semantics/publishe