Synthesis, spectral characterization, electrochemical properties and antimicrobial screening of sulfur containing acylferrocenes
摘要:
Several known and eight new sulfur containing acylferrocenes of the general formula FcCO(CH2)(n)SR (where Fc = ferrocenyl, n = 1 or 2 and R = alkyl, 4-bromobenzyl or 2,6-dichlorobenzyl group) were synthesized in order to test their in vitro antimicrobial activity against 11 bacterial and three fungal/yeast strains. It has been shown that only four of the 14 ketones are completely inactive at the tested dose, while the activities of the other ones were noteworthy. All new compounds were well characterized by IR and NMR spectral data, and their electrochemical properties were investigated by cyclic voltammetry. The X-ray crystal structures of two representative ketones are also presented. (C) 2010 Elsevier Ltd. All rights reserved.
Synthesis, spectral characterization, electrochemical properties and antimicrobial screening of sulfur containing acylferrocenes
摘要:
Several known and eight new sulfur containing acylferrocenes of the general formula FcCO(CH2)(n)SR (where Fc = ferrocenyl, n = 1 or 2 and R = alkyl, 4-bromobenzyl or 2,6-dichlorobenzyl group) were synthesized in order to test their in vitro antimicrobial activity against 11 bacterial and three fungal/yeast strains. It has been shown that only four of the 14 ketones are completely inactive at the tested dose, while the activities of the other ones were noteworthy. All new compounds were well characterized by IR and NMR spectral data, and their electrochemical properties were investigated by cyclic voltammetry. The X-ray crystal structures of two representative ketones are also presented. (C) 2010 Elsevier Ltd. All rights reserved.
Effect of heteroatoms in the side chains of disklike molecules on the formation of discotic liquid crystalline phases
作者:David M. Collard、C. Peter Lillya
DOI:10.1021/jo00021a020
日期:1991.10
Incorportion of oxygen and sulfur atoms into the side chains of discotic liquid crystals generally results in a depression of both the crystal to discotic and discotic to isotropic transition temperatures relative to the n-alkyl analogue. In contrast, replacement of the methylenes in side-chain positions 4 of 2,3,6,7,10,11-hexakis(alkanoyloxy)triphenylenes increases the clearing (M-I) temperature from 120 to 200-degrees-C. This effect is specific for sulfur substitution, to the triphenylene series, and to the 4-position. It is not expected, based on a simple model for discotic-phase formation.