Volatiles and Antimicrobial Activity of the Essential Oils of the Mosses Pseudoscleropodium purum, Eurhynchium striatum, and Eurhynchium angustirete Grown in Turkey

The chemical composition of the essential oils from all parts of Pseudoscleropodium purum, Eurhynchium striatum and Eurhynchium angustirete were analysed by GC-FID-MS. Sixty-five, thirty-four and seven compounds, accounting for 99.7%, 97.3% and 99.9% of the oils, were identified and the main components were ?-pinene (16.1%), 3-octanone (48.1%), and eicosane (28.6%), respectively. The essential oils were also tested against nine strains using a broth microdilution method and showed moderate antimicrobial activity with minimum inhibitory concentrations (MIC) ranging from 278.2 to 2225 µg/mL. All the mosses essential oils showed good antituberculosis activity against Mycobacterium smegmatis with MIC of 278.2-312.0 µg/mL. © 2015 ACG Publications. All rights reserved

Characterizations of slant helices in Euclidean 3-space

In this paper we investigate the relations between a general helix and a slant helix. Moreover, we obtain some differential equations which they are characterizations for a space curve to be a slant helix. Also, we obtain the slant helix equations and its Frenet aparatus.In this paper we investigate the relations between a general helix and a slant helix. Moreover, we obtain some differential equations which they are characterizations for a space curve to be a slant helix. Also, we obtain the slant helix equations and its Frenet aparatus

Synthesis and characterisation of new sulfonamide chalcones containing an azo group

WOS: 000435470600010The synthesis and characterisation of a new type of chalcone bearing a -N=N- bond is reported using an environmentally benign approach. The synthesis consists of two steps. (E)-4-((5-acetyl-2-hydroxyphenyl)diazenyl) benzenesulfonamide was synthesised by an easy structural modification of sulfanilamide. The key step then involved the solvent-free Claisen-Schmidt condensation of benzaldehydes to form the chalcones. The structures of all compounds were confirmed by FTIR, NMR and MS spectroscopy.Scientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [115Z078]We are indebted to the Scientific and Technological Research Council of Turkey (TUBITAK, Grant No. 115Z078) for their financial support for this work