Search Results - "Kaloyanova, Stefka"

Journal Article

Chemical tags for site-specific fluorescent labeling of biomolecules

by Freidel, Christoph Kaloyanova, Stefka Peneva, Kalina Published in Amino acids (01.06.2016)

“...This review focuses on the various approaches to covalently attach a chromophore to a biomolecule of interest in site-specific manner. Novel methods like...”

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Synthesis and physicochemical properties of novel lophine derivatives as chemiluminescent in vitro activators for detection of free radicals

by Pavlova, Elitsa Kaloyanova, Stefka Deligeorgiev, Todor Lesev, Nedyalko Published in European biophysics journal (01.12.2015)

“...The overproduction of free radicals and reactive oxygen species (ROS) has been proved as a basic damage mechanism and cause for oxidative stress. Their...”

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Journal Article

Modulation of Mitochondriotropic Properties of Cyanine Dyes by in Organello Copper‐Free Click Reaction

by Negwer, Inka Hirsch, Markus Kaloyanova, Stefka Brown, Tom Peneva, Kalina Butt, Hans‐Jürgen Koynov, Kaloian Helm, Mark Published in Chembiochem : a European journal of chemical biology (19.09.2017)

“...Cyanine (Cy) dyes show a general propensity to localize in polarized mitochondria. This mitochondriotropism was used to perform a copper‐free click reaction in...”

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Multivalency: Key Feature in Overcoming Drug Resistance with a Cleavable Cell-Penetrating Peptide-Doxorubicin Conjugate

by Lelle, Marco Lelle, Marco Freidel, Christoph Freidel, Christoph Kaloyanova, Stefka Kaloyanova, Stefka Müllen, Klaus Müllen, Klaus Peneva, Kalina Peneva, Kalina Published in International journal of peptide research and therapeutics (01.09.2018)

“...Multivalency is often used in biological systems, to increase affinity and specificity through avidity. This inspired us to prepare a synthetic bioconjugate...”

Journal Article

Fluorescent Dyes for Bio-Applications in the Patent Literature

by Todor Deligeorgiev Aleksey Vasilev Stefka Kaloyanova Juan-Jose Vaquero Published in Recent patents on materials science (01.05.2013)

“...For life science research the fluorescent probes are essential tools and their use is continually increasing due to their low cost and higher sensitivity...”

Journal Article

Towards an architecture for open archive networks in agricultural sciences and technology

by Subirats, Imma Onyancha, Irene Salokhe, Gauri Kaloyanova, Stefka Anibaldi, Stefano Keizer, Johannes
edited by Prasad, A.R.D
Published in Online information review (08.08.2008)

“...Purpose - The purpose of this paper is to explore addressing the accessibility, availability and interoperability issues of exchanging agricultural research...”

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Journal Article

Achieving OAI PMH compliancy for CDS ISIS databases

by Kaloyanova, Stefka Luigi Betti, Gian Castellani, Francesco Keizer, Johannes Published in Electronic library (06.06.2008)

“...Purpose - The main purpose of this paper is to present the work recently carried out by the Food and Agriculture Organization of the United Nations (FAO) in...”

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Journal Article

Kinetic Differentiation between Homo‐ and Alternating AT DNA by Sterically Restricted Phosphonium Dyes

by Tumir, Lidija‐Marija Crnolatac, Ivo Deligeorgiev, Todor Vasilev, Aleksey Kaloyanova, Stefka Grabar Branilović, Marina Tomić, Sanja Piantanida, Ivo Published in Chemistry : a European journal (26.03.2012)

“...Poly has a tracker: By sterically controlling monomer–dimer equilibria, novel dyes can kinetically differentiate between homo‐AT and alternating AT–AT...”

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Journal Article

Novel Green Procedure for the Synthesis of 2-Arylbenzothiazoles Under Microwave Irradiation in Peg 200 Or Peg 400

by Deligeorgiev, Todor G Kaloyanova, Stefka Vasilev, Aleksey Vaquero, Juan J Published in Phosphorus, sulfur, and silicon and the related elements (28.10.2010)

“...An improved green procedure for the synthesis of 2-aryl- and 2-hetarylbenzothiazoles by condensation of equivalent amounts of 2,2′-diaminodiphenyldisulfides or...”

Journal Article

Octreotide-Mediated Tumor-Targeted Drug Delivery via a Cleavable Doxorubicin–Peptide Conjugate

by Lelle, Marco Kaloyanova, Stefka Freidel, Christoph Theodoropoulou, Marily Musheev, Michael Niehrs, Christof Stalla, Günter Peneva, Kalina Published in Molecular pharmaceutics (07.12.2015)

“...Although recent methods for targeted drug delivery have addressed many of the existing problems of cancer therapy associated with undesirable side effects,...”

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Journal Article

A novel general method for preparation of neutral monomethine cyanine dyes

by Deligeorgiev, Todor Kaloyanova, Stefka Vasilev, Aleksey Published in Dyes and pigments (2011)

“...Two novel general experimental procedures for preparation of neutral monomethine cyanine dyes without using a basic agent have been developed. The procedures...”

Journal Article

Overcoming drug resistance by cell-penetrating peptide-mediated delivery of a doxorubicin dimer with high DNA-binding affinity

by Lelle, Marco Freidel, Christoph Kaloyanova, Stefka Tabujew, Ilja Schramm, Alexander Musheev, Michael Niehrs, Christof Müllen, Klaus Peneva, Kalina Published in European journal of medicinal chemistry (21.04.2017)

“...We describe the synthesis and characterization of a novel bioconjugate, consisting of an octaarginine cell-penetrating peptide and a highly DNA-affine...”

Journal Article

Styryl dyes – synthesis and applications during the last 15 years

by Deligeorgiev, Todor Vasilev, Aleksey Kaloyanova, Stefka Vaquero, Juan J Published in Coloration technology (01.04.2010)

“...One of the most widely used and important groups of functional dyes are the styryl dyes and a review of this functional dye class has not been published for...”

Journal Article

An improved method for tricyanovinilation of aromatic amines under ultrasound irradiation

by Deligeorgiev, Todor Lesev, Nedyalko Kaloyanova, Stefka Published in Dyes and pigments (2011)

“...A synthetic method for tricyanovinylation under ultrasound irradiation has been developed for preparation of tricyanovinyl aromatic amines. The method is...”

Journal Article

An easy and fast ultrasonic selective S-alkylation of hetaryl thiols at room temperature

by Deligeorgiev, Todor Kaloyanova, Stefka Lesev, Nedyalko Vaquero, Juan J Published in Ultrasonics sonochemistry (2010)

“...A series of 2-alkylthio derivatives of hetaryl thiols were synthesized by selective S-alkylation with alkyl halides (bromides and iodides) with ultrasonic...”

Journal Article

Synthesis and study of nucleic acids interactions of novel monomethine cyanine dyes

by Kaloyanova, Stefka Crnolatac, Ivo Lesev, Nedyalko Piantanida, Ivo Deligeorgiev, Todor Published in Dyes and pigments (2012)

“...Six asymmetric monomethine cyanine dyes have been synthesized and their spectral characteristics and interaction with double stranded (ds)DNA have been...”

Journal Article

New fluorescent probes for detection and characterization of amyloid fibrils

by Gorbenko, Galyna Trusova, Valeriya Kirilova, Elena Kirilov, Georgiy Kalnina, Inta Vasilev, Aleksey Kaloyanova, Stefka Deligeorgiev, Todor Published in Chemical physics letters (2010)

“...New benzanthrone derivative displays high sensitivity to amyloid aggregates of lysozyme. [Display omitted] ► The present study revealed an important new...”

Journal Article

An environmentally benign procedure for the synthesis of substituted 2-thiobenzothiazoles, 2-thiobenzoxazoles, 2-thiobenzimidazoles, and 1,3-oxazolopyridine-2-thiols

by Deligeorgiev, Todor G Kaloyanova, Stefka S Lesev, Nedyalko Y Vaquero, Juan J Published in Monatshefte für Chemie (01.09.2011)

“...An improved environmentally benign procedure for the synthesis of substituted 2-thio-benzothia(oxa)zoles, 2-thiobenzimidazoles, and...”

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Journal Article

Preparation and optical properties of silica gels doped with a new Eu(III) complex

by Petkova, Nina Gutzov, Stoyan Lesev, Nedyalko Kaloyanova, Stefka Stoyanov, Stanimir Deligeorgiev, Todor Published in Optical materials (2011)

“...The preparation and incorporation in silica gels of a novel europium complex, [Eu(ntac) 3][pphendcn] containing 4,4,4- trifluoro-1-(naphthalene-2-yl)...”

Journal Article

Mixed-ligand Al complex—a new approach for more high efficient OLEDs

by Petrova, Petia K Tomova, Reni L Stoycheva-Topalova, Rumiana T Kaloyanova, Stefka S Deligeorgiev, Todor G Published in Journal of luminescence (2012)

“...The mixed-ligand Aluminum bis(8-hydroxyquinoline) acetylacetonate (Alq 2Acac) complex was presented and its performance as electroluminescent and electron...”

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