N-Alkylated 2,3,3-trimethylindolenines and 2-methylbenzothiazoles. Potential lead compounds in the fight against Saccharomyces cerevisiae infections
作者:Andrew R. Tyler、Adeyi Okoh Okoh、Clare L. Lawrence、Vicky C. Jones、Colin Moffatt、Robert B. Smith
DOI:10.1016/j.ejmech.2013.03.031
日期:2013.6
The synthesis of a variety of N-alkylated 2,3,3-trimethylindolenines and 2-methylbenzothiazoles is reported herein. Their potential as antifungal agents is evaluated by preliminary screening against Saccharomyces cerevisiae (S. cerevisiae), Schizosaccharomyces pombe (S. pombe), and Candida albicans (C albicans). Statistical analyses illustrate a strong relationship between chain length and growth inhibition for S. cerevisiae and S. pombe (p < 0.0001 in every case).Of particular interest is the activity of both sets of compounds against S. cerevisiae, as this is emerging as an opportunistic pathogen, especially in immunosuppressed and immunocompromised patients. Bioassays were set up to compare the efficacy of our range of N-alkylated compounds against classic antifungal agents; Amphotericin B and Thiabendazole. (C) 2013 Elsevier Masson SAS. All rights reserved.
Effects of alkyl chain substitution on the crystal structure of benzothiazole-derived squarylium dyes
l-2-ylidene)methyl]-3-oxocyclobut-1-en-1-olate derivatives bearing alkylchains of different lengths were determined by single-crystal X-ray crystallography. Single crystals were categorized into four types based on their structural characteristics. Hirshfeld surface analysis showed that in each type of structure, the alkylchains interacted with different parts of the molecule, affecting thermal properties
Template-free H-dimer and H-aggregate formation by dimeric carbocyanine dyes
作者:Prathap Reddy Patlolla、Amarjyoti Das Mahapatra、Sairam S. Mallajosyula、Bhaskar Datta
DOI:10.1039/c8nj00371h
日期:——
assembly of cyanine dyes has emphasized the cooperative and controlled nature of such aggregation. In this work, we explore the spontaneous and template-free self-assembly of two symmetrical dimeric carbocyanine dyes. UV-visible spectroscopy of the aggregates reveals a correlation between the alkyl linker length and the propensity of dyes to dimerize in solution. In contrast to their monomeric counterparts