Bojidarka B Ivanova

Summary

Affiliation: Sofia University
Country: Bulgaria

Publications

  1. ncbi Solid-state IR-LD spectroscopic and theoretical analysis of glycine-containing peptides and their hydrochlorides
    Bojidarka B Ivanova
    Sofia University, St Kl Ohridsky, Faculty of Chemistry, 1164 Sofia, Bulgaria
    Biopolymers 82:587-96. 2006
  2. ncbi Solid-state linear-dichroic IR-spectroscopy of isophorone derivatives with potential non-linear optical application
    Bojidarka B Ivanova
    Sofia University St Kl Ohridski, Faculty of Chemistry, 1164 Sofia, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 65:1035-40. 2006
  3. ncbi Aromatic dipeptides and their salts--solid-state linear-dichroic infrared (IR-LD) spectral analysis and ab initio calculations
    Bojidarka B Ivanova
    Sofia University St Kl Ohridski, Faculty of Chemistry, 1164 Sofia, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 70:324-31. 2008
  4. ncbi Solid state linear dichroic infrared spectral analysis of benzimidazoles and their N(1)-protonated salts
    B B Ivanova
    University of Sofia, Department of Chemistry, 1164 Sofia, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 62:58-65. 2005
  5. ncbi Solid state linear-dichroic infrared spectral and theoretical analysis of methionine-containing tripeptides
    Bojidarka B Ivanova
    Sofia University, St Kl Ohridski, Faculty of Chemistry, 1164 Sofia, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 65:56-61. 2006
  6. ncbi IR-LD spectroscopic characterization of L-Tryptophan containing dipeptides
    Bojidarka B Ivanova
    Sofia University St Kl Ohridski, Faculty of Chemistry, 1164 Sofia, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 64:931-8. 2006
  7. ncbi Linear-dichroic infrared spectroscopy - validation and experimental design of the new orientation technique of solid samples as suspension in nematic liquid crystal
    B B Ivanova
    University of Sofia St Kl Ohridski, 1, J Bourchier Building, 1164 Sofia, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 67:66-75. 2007
  8. ncbi Stereo-structural prediction and IR-characteristic band assignment of amorphous protonated forms of homodipeptides (L)-Phe-(L)-Phe, (L)-Trp-(L)-Trp, (L)-Tyr-(L)-Tyr and the neutral - (L)-Trp-(L)-Trp. Ab initio approximation and solid-state linear-polarize
    B B Ivanova
    Faculty of Chemistry, Sofia University, 1 J Bourchier Blvd, Sofia 1164, Bulgaria
    Protein Pept Lett 13:889-98. 2006
  9. doi 2-(Phenylethyl)ammonium hydrogensquarate hemihydrate: crystal structure, solid-state IR-spectroscopic and theoretical characterization
    Bojidarka B Ivanova
    Institut für Umweltforschung, Universitat Dortmund, Otto Hahn Strasse 6, 44221, Dortmund, Germany
    Amino Acids 39:309-14. 2010
  10. doi Synthesis, spectroscopic and structural study of trans- and cis-(±)-3-phenyl-4-(pyrrolidine-1-carbonyl)-isochroman-1-ones
    M G Bogdanov
    University of Sofia, St Kl Ohridsky, Department of Organic Chemistry, Sofia 1164, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 77:902-7. 2010

Collaborators

Detail Information

Publications15

  1. ncbi Solid-state IR-LD spectroscopic and theoretical analysis of glycine-containing peptides and their hydrochlorides
    Bojidarka B Ivanova
    Sofia University, St Kl Ohridsky, Faculty of Chemistry, 1164 Sofia, Bulgaria
    Biopolymers 82:587-96. 2006
    ....
  2. ncbi Solid-state linear-dichroic IR-spectroscopy of isophorone derivatives with potential non-linear optical application
    Bojidarka B Ivanova
    Sofia University St Kl Ohridski, Faculty of Chemistry, 1164 Sofia, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 65:1035-40. 2006
    ..The data of last two compounds have been compared with known crystallographic ones, thus determining the validity of conclusions made...
  3. ncbi Aromatic dipeptides and their salts--solid-state linear-dichroic infrared (IR-LD) spectral analysis and ab initio calculations
    Bojidarka B Ivanova
    Sofia University St Kl Ohridski, Faculty of Chemistry, 1164 Sofia, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 70:324-31. 2008
    ..The experimental data are compared with known crystallographic ones and theoretical predicted geometries at RHF/ and UHF/6-31G**...
  4. ncbi Solid state linear dichroic infrared spectral analysis of benzimidazoles and their N(1)-protonated salts
    B B Ivanova
    University of Sofia, Department of Chemistry, 1164 Sofia, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 62:58-65. 2005
    ..The C(s) to C(2v)(*) symmetry transformation as a result of protonation processes, with a view of its reflection on the infrared spectral characteristics was described...
  5. ncbi Solid state linear-dichroic infrared spectral and theoretical analysis of methionine-containing tripeptides
    Bojidarka B Ivanova
    Sofia University, St Kl Ohridski, Faculty of Chemistry, 1164 Sofia, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 65:56-61. 2006
    ..Thus obtained data are compared with theoretical ones received by ab initio calculations (Hartree-Fock level of theory and 6-31G** basis set). An IR-spectral characterization of both tripeptides is included as well...
  6. ncbi IR-LD spectroscopic characterization of L-Tryptophan containing dipeptides
    Bojidarka B Ivanova
    Sofia University St Kl Ohridski, Faculty of Chemistry, 1164 Sofia, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 64:931-8. 2006
    ..In cyclo(Trp-Trp), the IR-spectral changes towards the IR-ones of acyclic Trp-Trp have been determined. A theoretical analysis of Tyr-Trp at Hartree-Fock level of theory and 6-31G** basis set is also applied...
  7. ncbi Linear-dichroic infrared spectroscopy - validation and experimental design of the new orientation technique of solid samples as suspension in nematic liquid crystal
    B B Ivanova
    University of Sofia St Kl Ohridski, 1, J Bourchier Building, 1164 Sofia, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 67:66-75. 2007
    ....
  8. ncbi Stereo-structural prediction and IR-characteristic band assignment of amorphous protonated forms of homodipeptides (L)-Phe-(L)-Phe, (L)-Trp-(L)-Trp, (L)-Tyr-(L)-Tyr and the neutral - (L)-Trp-(L)-Trp. Ab initio approximation and solid-state linear-polarize
    B B Ivanova
    Faculty of Chemistry, Sofia University, 1 J Bourchier Blvd, Sofia 1164, Bulgaria
    Protein Pept Lett 13:889-98. 2006
    ..In (L)-Tyr-(L)-Tyr and (L)-Phe-(L)-Phe, a deviation of O=C-N-H torsion angle about 10-14(0) is predicted. The calculations show a trans-amide configuration in (L)-Trp-(L)-Trp and a cis-one after its protonation...
  9. doi 2-(Phenylethyl)ammonium hydrogensquarate hemihydrate: crystal structure, solid-state IR-spectroscopic and theoretical characterization
    Bojidarka B Ivanova
    Institut für Umweltforschung, Universitat Dortmund, Otto Hahn Strasse 6, 44221, Dortmund, Germany
    Amino Acids 39:309-14. 2010
    ..Surprisingly, the crystallographically non-equivalent cations exhibit differing pseudo T and G trans configurations...
  10. doi Synthesis, spectroscopic and structural study of trans- and cis-(±)-3-phenyl-4-(pyrrolidine-1-carbonyl)-isochroman-1-ones
    M G Bogdanov
    University of Sofia, St Kl Ohridsky, Department of Organic Chemistry, Sofia 1164, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 77:902-7. 2010
    ..Quantum chemical ab initio and DFT calculations are performed, to support the experimental data for the electronic structure and optical properties...
  11. ncbi Reducing-difference infrared spectral analysis of cis- and trans-configurated lactams
    M G Arnaudov
    University of Sofia, Department of Chemistry, 1, J Bourchier Blvd, 1164 Sofia, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 63:491-500. 2006
    ..A comparative analysis with the linear-dichroic IR-spectra of epsilon-caprolactam and caprylolactam, as similar compounds, with cis- and trans-conformation, respectively, was also carried out...
  12. ncbi Linear-dichroic infrared spectral analysis of Cu(I)-homocysteine complex
    B B Ivanova
    Faculty of Chemistry, Sofia University, 1 J Bourchier Boulevard, Sofia 1164, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 60:855-62. 2004
    ..In the complex (1), Cu(I) is coordinated through the two O atoms of one COO- group of each of the ligands and the metal ion coordination sphere represents a distorted tetrahedron...
  13. doi Properties of the Michael's adducts of the substituted 2-amino-5-oxonitriles
    D Tacheva
    University of Sofia, Department of Organic Chemistry, Sofia 1164, Bulgaria
    Spectrochim Acta A Mol Biomol Spectrosc 77:588-93. 2010
    ..Theoretical quantum chemical calculations were carried out, thus supporting the experimental optical properties and electronic structure of compounds studied...
  14. doi Conformations and properties of the L-tryptophyl-containing peptides in solution, depending on the pH--theoretical study vs. experiments
    Bojidarka B Ivanova
    Faculty of Chemistry, Sofia University St Kl Ohridski, 1, J Bourchier Blvd, Sofia 1164, Bulgaria
    Biopolymers 93:727-34. 2010
    ....
  15. ncbi Copper-homocysteine complexes and potential physiological actions
    Margarita D Apostolova
    Department of Cellular Integrity, Rowett Research Institute, Aberdeen AB219SB, UK
    J Inorg Biochem 95:321-33. 2003
    ..Together, these observations suggest that Cu-hCys complexes actively participate in the biochemical responses of endothelial cells that are involved in the aethiopathogenesis of atherosclerosis...