Ara
Toplam kayıt 52, listelenen: 31-40
Synthesis, Configuration, and Antimicrobial Properties of Novel Substituted and Cyclized ‘2′,3″-Thiazachalcones’
(Wiley, 2007)
Nine new thiazachalcone-based drugs, compounds 1-9, were prepared and fully characterized. The configurations of the photochemical-dimerization products 7-9 were rationalized by semi-empirical calculations. Both the ...
Microwave-assisted synthesis of 4′-azaflavones and their n-alkyl derivatives with biological activities
(Wiley, 2008)
4?-Azaflavone (=2-(pyridin-4-yl)-4H-1-benzopyran-4-one; 4) and 3-[(pyridin-4-yl)methyl]-4?-azaflavone (5) were synthesized by a simple environmentally friendly microwave-assisted one-pot method through the cyclization of ...
Antimicrobial activity and essential oil compositions of two Ranunculus species from Turkey: R. constantinopolitanus and R. arvensis
(2008)
The isolated essential oils of Ranunculus constantinopolitanus and Ranunculus arvensis were tested for antimicrobial activity against the bacteria E. coli, K. pneumoniae, P. aeruginosa, E. faecalis, S. aureus, B. cereus ...
Synthesis of methyl (E)-2′,4″-thiazachalcones and their N-alkyl derivatives, photochemistry with theoretical calculations and antimicrobial activities
(TUBİTAK, 2009)
A series of 9 new (E) -thiazachalcones (1-3), and their N -alkyl substituted derivatives (4-6), and stereoselective dimerization products (7-9) were synthesized, then tested for antimicrobial activity against all test ...
Photochemistry of nitro-substituted (E)-2-azachalcones with theoretical calculations and biological activities
(Elsevier, 2009)
Four new stereoselective dimerization products (4a-c, 5) of m- and p-nitro-substituted (E)-2-azachalcones (2 and 3) were synthesized and tested for antimicrobial and antioxidant activities. Compounds 1-3 showed very good ...
Chemical composition and antimicrobial activities of the essential oils of Viburnum opulus, Viburnum lantana and Viburnum orientala
(2008)
The composition of the essential oils obtained from the air-dried Viburnum opulus and Viburnum lantana were analyzed by GC-MS. 40 and 53 Components were identified in the essential oils and the main component of these ...
Photodimerizations of hydroxy- and benzoylated 4-azachalcones and quantum chemical investigation of the reactions
(Springer Link, 2010)
Photodimerization reactions of compounds 4-6 gave four new cyclobutane-containing compounds (7-9) with full control over the stereochemistry at the four stereogenic centers. These new cyclobutane- containing compounds had ...
Chemical composition and antimicrobial activity of the essential oils of mosses (Tortula muralis Hedw., Homalothecium lutescens (Hedw.) H. Rob., Hypnum cupressiforme Hedw., and Pohlia nutans (Hedw.) Lindb.) from Turkey
(TÜBİTAK, 2010)
The essential oils of mosses [Tortula muralis Hedw. (Pottiaceae), Homalothecium lutescens (Hedw.) H. Rob. (Brachytheciaceae), Hypnum cupressiforme Hedw. (Hypnaceae), and Pohlia nutans (Hedw.) Lindb. (Mniaceae)] were ...
Volatile constituents and antimicrobial activities from flower and fruit of arbutus unedo L.
(2010)
Essential oils isolated by hydrodistillation from flower and fruit of Arbutus unedo growing in Turkey were analyzed by GC and GC/MS. Forty-nine compounds, representing around 95% of the total oils were identified. ...
Composition and antimicrobial activity of the essential oils from flowers of Senecio othonnae, S. racemosus, and S. nemorensis
(Natural Product Incorporation, 2010)
The chemical composition of the essential oils of Senecio othonnae, S. racemosus, and S. nemorensis obtained by hydrodistillation of fresh flowers were analysed by GC-FID and GC-MS. A total of seventy-six compounds were ...