Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Daniela Nedeltcheva"'
Publikováno v:
Physchem, Vol 4, Iss 1, Pp 91-105 (2024)
The tautomerism in the title compound as a potential long-range proton transfer (PT) switch has been studied by using the DFT and TD-DFT approaches. The data show that in aprotic solvents, the enol tautomer dominates, while the increase in the conten
Externí odkaz:
https://doaj.org/article/553117ddbde3422ea8f78740bbe44921
Publikováno v:
Molecules, Vol 28, Iss 3, p 1281 (2023)
The chemical composition and aroma profile of industrial essential oils (EOs) from species of rose grown in China, including the native Kushui rose (R. sertata × R. rugosa) and R. rugosa Thunb. cv. Plena, and the recently introduced Damask rose (R.
Externí odkaz:
https://doaj.org/article/b5407eacbc924a5e9d4dbc67455d82d9
Autor:
Vera Deneva, Sofia Slavova, Alina Kumanova, Nikolay Vassilev, Daniela Nedeltcheva-Antonova, Luidmil Antonov
Publikováno v:
Pharmaceuticals, Vol 16, Iss 1, p 45 (2022)
The tautomeric properties of favipiravir were investigated experimentally for the first time by using molecular spectroscopy (UV–Vis absorption, fluorescence and NMR), as well as DFT quantum–chemical calculations. According to the obtained result
Externí odkaz:
https://doaj.org/article/6553430ecf114a0fbf8d3170b275be04
Publikováno v:
Molecules, Vol 27, Iss 23, p 8225 (2022)
In the tautomeric Schiff bases, derived from 7-hydroxyquinoline, two competitive channels are possible upon excitation of the enol tautomer, namely proton transfer (PT) through intramolecular hydrogen bonding to the corresponding keto form and trans
Externí odkaz:
https://doaj.org/article/c2838b73d7724ac1bba1c37972f7f6fc
Publikováno v:
Plants, Vol 11, Iss 22, p 3150 (2022)
Lavender (L. angustifolia Mill.) is an important essential oil-bearing and medicinal plant with high commercial value. Lavender scent components can be derived not only as an essential oil but also as lavender concrete or absolute. The development of
Externí odkaz:
https://doaj.org/article/cefafebd265e4693ac32b6580e313cdd
Autor:
Vera Deneva, Georgi Dobrikov, Aurelien Crochet, Daniela Nedeltcheva, Katharina M. Fromm, Liudmil Antonov
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 15, Iss 1, Pp 1898-1906 (2019)
The concept for sensing systems using the tautomerism as elementary signaling process has been further developed by synthesizing a ligand containing 4-(phenyldiazenyl)naphthalene-1-ol as a tautomeric block and an amide group as metal capturing antenn
Externí odkaz:
https://doaj.org/article/77a7fd316a3e442cbfb78561e6e505b9
Publikováno v:
Molecules, Vol 26, Iss 16, p 4991 (2021)
A comprehensive chemical profiling of 1,1,1,2-tetrafluoroethane (freon R134a) subcritical extracts from the main genotypes of oil-bearing roses, was performed by gas chromatography–mass spectrometry (GC/MS) and gas chromatography with flame ionizat
Externí odkaz:
https://doaj.org/article/6ac81bc671054df79ddca47e87dfae95
Autor:
Kostadin Andonov, Angel Dyugmedzhiev, Simeon Lukanov, Miroslav Slavchev, Emiliya Vacheva, Nikola Stanchev, Georgi Popgeorgiev, Deyan Duhalov, Yurii V. Kornilev, Daniela Nedeltcheva-Antonova, Borislav Naumov
Publikováno v:
Molecules, Vol 25, Iss 16, p 3622 (2020)
Snakes rely heavily on chemical cues when foraging, searching for mates, etc. Snakes’ sex attractiveness pheromones comprise mainly heavy, semi-volatile compounds such as ketones. Here we investigated the composition of skin secretions of adult Vip
Externí odkaz:
https://doaj.org/article/3c967575f4df47fca99f4758ad4cdbbc
Autor:
Daniela Ivanova, Vera Deneva, Dimitrina Zheleva-Dimitrova, Vesela Balabanova-Bozushka, Daniela Nedeltcheva, Reneta Gevrenova, Liudmil Antonov
Publikováno v:
Foods, Vol 8, Iss 1, p 9 (2018)
The possibility of applying near-infrared (NIR) spectroscopy to monitor 13 active components (phenolic acids, flavonoids, and sesquiterpene lactones) in Arnicae flos was studied. The preprocessing of the spectra were performed by using the convention
Externí odkaz:
https://doaj.org/article/eee0cbe9fad04f9f97971514aa2c1ce2
Autor:
Antonov, Vera Deneva, Sofia Slavova, Alina Kumanova, Nikolay Vassilev, Daniela Nedeltcheva-Antonova, Luidmil
Publikováno v:
Pharmaceuticals; Volume 16; Issue 1; Pages: 45
The tautomeric properties of favipiravir were investigated experimentally for the first time by using molecular spectroscopy (UV–Vis absorption, fluorescence and NMR), as well as DFT quantum–chemical calculations. According to the obtained result
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=multidiscipl::bc279c88d7a48cd7aaeedb471bac999b