Galya Ivanova Ivanova
Assistant Researcher
Research Group
Design of Molecules and NanoMaterials for Therapy and Diagnosis
REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto Rua do Campo Alegre 4169-007 PORTO PORTUGAL
220 408 250
- ext 6123
Research Interests
Application of advanced NMR spectroscopic techniques to solving structural and chemical problems.
Application of liquid and solid state NMR spectroscopy for structural investigation of small and medium size molecules, polymers, molecular aggregates and nanomaterials.
Studies on synthetic and natural biologically active compounds, polymer/polymer based nano- systems;
Studies of tautomeric and conformational equilibria, inter- and intra-molecular interactions.
Main publications
1. L. Terlemezian, M. Mihailov, L. Kamburova, B. Ivanova, B. Gantchev and G. Ivanova, Preparation and Investigation of Methyl Methacrylate-butadiene-styrene Graft Copolymers and Their Mixtures with Poly(vinyl chloride), Acta Polymerica, 40 (1989) 279-281.

2. G. Eneva, B. Nikolova-Damyanova, S. Spassov and M. Haimova, Determination of Nebramycin Components by TLC and Densitometry, J. Planar Chromatogr., 3 (1990) 232-235.

3. G. Eneva, S. Spassov and M. Haimova, Complete 1H and 13C NMR Assignments for Kanamycin A, Kanamycin B and Penta-N-acetyl-kanamycin B, Spectrochim. Acta, 47A (1991) 875-880.

4. G. I. Eneva, S. L. Spassov, M. A. Haimova and J. Sandstroem, Complete 1H and 13C NMR Assignment for Apramycin, Sisomicin and Some N- and N,O-Polyacetylated Aminoglycosides, Magn. Res. Chem., 30 (1992) 841-846.

5. G. I. Eneva, S. L. Spassov and M. A. Haimova, Conformational analysis of sisomicin and penta-N- di-O-acetylsisomicin using NMR spectroscopy and molecular mechanics calculations, J. Mol. Struct., 291 (1993) 191-195.

6. G. I. Eneva, S. L. Spassov and M. A. Haimova, Complete 1H and 13C NMR chemical shift assignments for some N-polyformylated aminoglycoside antibiotics, Spectr. Lett., 28 (1995) 69-80.

7. S. Simova and G. I. Ivanova, Proton and Carbon Chemical Shift Assignment and Solution Stat Conformation of the Macrolid Antibiotic Tylosin in Aprotic Solvents, Magn. Res. Chem. 34 (1996) 255-260.

8. A.Z. Khan, G. I. Ivanova, S. L. Spassov and J. Sandstroem, Stereochemical Studies of 1,2-Di(thio)acetamidocyclohexanes and their N,N’-Dimethyl Derivatives by NMR and CD Spectroscopy and by Molecular Mechanics Calculations, Acta Chem. Scand., 50 (1996) 938-951.

9. E. W. Randall, N. Mahieu and G. I. Ivanova, NMR Studies of Soil, Soil Organic Matter and Nutrients: Spectroscopy and Imaging, Geoderma, 80 (1997) 307-325.

10. V. Enchev, G. Ivanova, A. Ugrinov, G. Neykov, S. Minchev and N. Stoyanov, Ab initio quantum chemical and NMR study of the symmetric monooximes of 1,2,3-phenalentrione and 1,2,3-indantrione, J. Mol. Struct., 440 (1998) 227-235.

11. J. Popova, E. Najdenova, N. Stoyanov, G. Ivanova and I. Mancheva, Gas-Mass Spectroscopic Investigation of HCN Addition Products of Some Substituted 2,3-Diphenylindenones, Comp. Rend. Acad. Bulg. Sci., 52 (1999) 39-42.

12. V. Enchev, G. Ivanova, A. Ugrinov and G. D. Neykov, Tautomeric and Conformational Equilibrium of Acenaphthenequinonemonooxime, J. Mol. Struct., 508 (1999) 149-161.

13. L. S. Changov, E. D. Najdenova, G. I. Ivanova, R. T. Gergova, E. E. Keuleyan and B. V. Aleksiev, Synhesis and beta-Lactamase Iinhibitory Activity of New 6-beta-Cysteinesulfonamidopenicillanic Acids, Bioorganic and Medicinal Chemistry, 7 (1999) 2899-2904.

14. V. Enchev, S. Bakalova, G. Ivanova and N. Stoyanov, Excited state intramolecular proton transfer in 2-acetylindan-1, 3-dione, Chem. Phys. Lett., 314 (1999) 234-238.

15. G. Ivanova and E. W. Randall, 1H and 13C NMR study of soil organic matter at 14.1 T, Bulgarian Chem. Comm., 31 (1999) 172-183.

16. E. Naydenova, J. Popova, G. Ivanova and M. Georgieva, Synthesis of 3-aminocycloalcanespirohydantoins modified with aminoacids and peptides, Bulgarian Chem. Comm., 33 (2001) 16-22.

17. G. Ivanova and V. Enchev, Does tautomeric equilibrium exist in ortho-nitrosonaphthols?, Chem. Phys., 264 (2001) 235-244.

18. V. Enchev, A. Ahmedova, G. Ivanova, I. Wawer, N. Stoyanov and M. Miteva, Quantum chemical and spectroscopic study of 2-acetylindan-1, 3-dion complexes with metal(II) ions, J. Mol. Struct., 595 (2001) 67-76.

19. V. Enchev, N. Stoyanov and G. Ivanova, Tautomerism and phototautomerism of derivatives of cyclic -diketones Proceedings of the Second Scientific Conference, University of Russe, 38, (2001) 196-201.

20. D. Dimov, P. Penev, S. Halagova, N. Angelova, G. Grozdanov and G. Ivanova, Synthesis of asym-disubstituted hydrazines using N-amination of secondary amines by hydroksylamine-o-sulfonic acid via lithium salts of the amines as N-H acids, Proceedings of the Second Scientific Conference, University of Russe, 38, (2001) 156-157.

21. G. Ivanova, I. Abrahams and V. Enchev, Structure of the symmetric monooxime of 1,2,3-indantrione in gas, solution and solid state, J. Mol. Struct., 608 (2002) 193-200.

22. G. Ivanova and E. W. Randall, 13C NMR and Mass Spectrometry of Soil Organic Matter, Central Eur. J. Chem., 1 (2003) 10-27.

23. V. Enchev, G. Ivanova, G. Pavlovic, M. Rogojerov, A. Ahmedova and M. Miteva, Reaction of 2-acetyl-indan-1,3-dione with aniline – Schiff base or enamine?, J. Mol. Struct., 654, (2003) 11-20.

24. V. Bojinov, G. Ivanova, J. Chovelon and I. Grabchev, Photophysical and photochemical properties of some 3-bromo-4-alkylamino-N-alkyl-1,8- naphthalimides, Dyes and Pigments, 58 (2003) 65-71.

25. D. Christova, S. Ivanova and G. Ivanova, Water soluble temperature-responsive poly(vinyl alcohol-co-vinylacetal)s, Polym. Bull., 50 (2003) 367-372.

26. N. Stoyanov, G. Ivanova and S. Minchev, Synthesis of 2-(2-thienyl)-3-hydroxyphenalene-1-ones and 3-(2-thienylmethylene)-1H,3H-naphtho-[1,8-c,d]-pyran-1-ones, Bulg. Chem. Ind., 74 (2003) 103-107.

27. I. Grabchev, J. Chovelon, V. Bojinov and G. Ivanova, Poly(amidoamine) Dendrimers Peripherally Modified with 4-Ethylamino-1,8-Naphthalimide, Tetrahedron, 59 (2003) 9591-9598.

28. S. Simova, G. Ivanova and S.L. Spassov, Alternative NMR Methods for quantitative determination of acyl positional distribution in triacylglycerols and related compounds, Chem. Phys. Lipids, 126 (2003) 111-120.

29. M. Simeonova, R. Velichkova, G. Ivanova, V. Enchev and I. Abrahams, Poly(butylcyanoacrylate) nanoparticles as a topical drug delivery system for 5- fluorouracil, Int. J. Pharmaceutics, 263 (2003) 133-140.

30. V. Enchev, G. Ivanova and N. Stoyanov, Tautomeric and conformational equilibrium of 2-nitrosophenol and 9,10-phenanthrenequinonemonooxime – an ab initio and NMR study, J. Mol. Struct: THEOCHEM, 640 (2003) 149-162.

31. M.G. Spasova, G.I. Ivanova, T.I. Pajpanova, T.S. Milkova. Synthesis of new N-substituted cinnamoyl derivatives of amino acids. J. Pept. Sci., 10 (2004) 262.

32. M. Simeonova, R. Velichkova, G. Ivanova, V. Enchev and I. Abrahams, Study on the role of 5-fluorouracil in the polymerization of butylcyanoacrylate during the formation of nanoparticles. J. Drug Targeting, 12 (2004) 49-56.

33. V. Bojinov, G. Ivanova and D. Simeonov, Synthesis and Photophysical Investigations of Novel Polymerizable Blue Emitting Fluorophores-Combination of a Hindered Amine with a Benzo[de]isoquinoline-1,3-dione, Macromolecular Chem. Phys., 205 (2004) 1259-1268.

34. M. Georgieva, L. Vezenkov, Tch. Ivanov and G. Ivanova, Design and synthesis of new -secretase inhibitors, Bulg. Chem. Comm., 57 (2004) 13-18.

35. M. Georgieva, L. Vezenkov, Tch. Ivanov, G. Ivanova, V. Mitev. Design, synthesis and biological characterization of optically active inhibitors of gamma-secretase and neuromediators. J. Pept. Sci., 10 (2004) 207.

36. I. Grabchev, J. Soumillion, B. Muls and G. Ivanova, Poly(amidoamine)dendrimer peripherally modified with 4-N,N-dimethylaminoethyleneamino-1,8-naphthalimid as a sensor of methal cations and protons, Photochem. Photobiol. Sci., 3 (2004) 1032-1037.

37. V. Enchev, I. Abrahams, S. Angelova and G. Ivanova, Fast Intramolecular Proton Transfer in 2-(hydroxyaminomethylidene)-indan-1,3-dione, J. Mol. Struct.: THEOCHEM, 719 (2005), 169-175.

38. M. Marinov, S. Minchev, N. Stoyanov, G. Ivanova, M. Spassova and V. Enchev, Thioanalogues of spirohydantoins, Croatica Chemica Acta, 78 (2005) 9-16.

39. M. Marinov, N. Stoyanov and G. Ivanova, Study on the stability against oxidation of 3-methyl derivatives of spirohydantoins and spirodithiohydantoins, Oxid. Comm., 28 (2005) 126-130.

40. P. Mokreva, D. Tsocheva, G. Ivanova, L. Terlemezyan, Copolymers of aniline and o-methoxyaniline: Synthesis and characterization, J. Appl. Polym. Sci., 98 (2005) 1822-1828

41. M. G. Spasova, G.I. Ivanova, L.N. Georgiev and T.S. Milkova, Synthesis of new cinnamoyl- and feruloylamino acid derivatives, Peptides 2004, Proceedings of 3-th International and 28-th European Peptide Symposium, 2005, 950-951.

42. M. Georgieva, L. Vezenkov, Tch. Ivanov, G. Ivanova. Design and synthesis of optically active potential inhibitors of the uptake of neuromediators (DA, NE, 5-HT) and  secretase. Peptides 2004, Proceedings of 3-th International and 28-th European Peptide Symposium, 688-689, 2005.

43. M. Spasova, V. Bankova, G. Ivanova, T. Pajpanova and T. Milkova, Synthesis of Esters of Substituted Phenolic Acids by Micro Wave Assisted Wittig Reaction, Oxid. Commun., 29 (2006) 172-175.

44. P. Mokreva, D. Tsocheva, G. Ivanova and L. Terlemezyan, Copolymers of aniline and o-methoxyaniline: synthesis and characterization, J. Appl. Polym. Sci., 99 (2006) 75-81

45. M.S. Refat, I. Grabchev, J.-M. Chovelon and G. Ivanova, New N,N’-bis-alkyl-1,4,6,8 naphthalenediimide complexes. Synthesis and Photophysical Properties, Spectrochim. Acta Part A., 64 (2006) 435-441.

46. S. Sali, I. Grabchev, J.-M. Chovelon, G. Ivanova. Selective sensors for Zn2+ cations on new green fluorescent poly(amidoamine) dendrimers periphedrally modified with 1,8-naphthalimides. Spectrochimica Acta Part A., 65 (2006) 591-597.

47. M. Spasova, V. Kortenska-Kancheva, I. Totseva, G. Ivanova, L. Georgiev and T. Milkova, Synthesis of Cinnamoyl and Hydroxycinnamoyl-amino acid conjugates and evaluation of their antioxidant activity. J. Pept. Sci., 12 (2006) 369-375.

48. M.G. Spasova, G.I. Ivanova, H. Weber, A. Ranz, E. Lankmayr and Ts. S. Milkova, Microwave-accelerated synthesis of amides of substituted cinnamic acids by Wittig reaction, Bulg. Chem. Comm., 38 (2006) 27-30.

49. M.G. Georgieva, L.T. Vezenkov, Tch.B. Ivanov, G.I. Ivanova, Design and synthesis of potential inhibitors of the uptake of neuromediators and - secretase, Bulg. Chem. Comm, 38 (2006) 14-16.

50. S. Angelova, V. Enchev, K. Kostova, M. Rogojerov, G. Ivanova, Theoretical and Spectroscopic Study of 2-Substituted Indan-1,3-Diones: a Coherent Picture of the Tautomeric Equilibrium, J. Phys. Chem., 111 (2007) 9901-9913.

51. M. Spasova, G. Ivanova, L. Nicolaeva-Glomb, T. Milkova, New cinnamoyl amides of nonproteinogennic fluorinated amino acids and their biological activity, Amino Acids 33 (2007) LXVI.

52. M. Spasova, G. Ivanova, T. Pajpanova, T. Milkova, Halogenation of substituted cinnamic acid amides, Amino Acids, 33 (2007) LXVI.

53. I. Stoineva, G. Ivanova, D. Petkov, Aminoacylation of unprotected saccharides. Amino Acids, 33 (2007) LXVII.

54. M. Spasova, G. Ivanova, H. Weber, A. Ranz, E. Lankmayr, T. Milkova, Amides of substituted cinnamic acids with aliphatic monoamines and their antioxidative potential, Oxid. Comm., 30 (2007) 803-813.

55. M. Spasova, G. Ivanova, T. Milkova. Hydroxycinnamoylamides of opioide active derivatives, J. Pept. Sci. 14 (2008) Suppl. 54.

56. I. Stoineva, G. Ivanova, B. Tchorbanov, Design and synthesis of amino acyl esters of unprotected saccharides as potent inhibitors of ACE. J. Pept. Sci. 14 (2008) Suppl. 140.

57. I. Abrahams, G.E.Hawkes, A. Ahmed, T. Di Cristina, D.Z. Demetriou , G.I. Ivanova, Structures of the chain metaphosphates NaM(PO3)3 (M = Ca or Sr), Magn. Res. Chem., 46 (2008) 316-322.

58. M. Gottschalk, G. Ivanova, D. M. Collins, A. Eustace, R. O’Connor, D. F. Brougham. Metabolomic studies of human lung carcinoma cell lines by in vitro 1H nuclear magnetic resonance of whole cells and cellular extracts. NMR in Biomedicine, 21 (2008) 1-11. DOI:10.1002/nbm.1258

59. G. I. Ivanova , E. J. Cabrita, R. O´Connor, A. Eustace, D. F. Brougham. Application of diffusion ordered spectroscopy for the analysis of cancer related biological samples. Bulg. Chem. Comm, 40 (2008) 464-468.

60. G. I. Ivanova , E. R. Vão , M. Temtem , A. Aguiar-Ricardo , T. Casimiro, E. J. Cabrita. High-Pressure NMR Characterization of Triacetyl--Cyclodextrin in Supercritical Carbon Dioxide. Magn. Res. Chem., 46 (2008) 316-322.

61. M. Simeonova, G. Ivanova, V. Enchev, N. Markova, M. Kamburov, Ch. Petkov, A. Devery, R. O’Connor, D. Brougham, Physicochemical characterization and in vitro behavior of daunorubicin-loaded poly(butyl-cyanoacrylate) nanoparticles, Acta Biomaterialia, 5 (2009) 2109–2121.

62. L. T. Vezenkov, M. G. Georgieva, D. L. Danalev, Tch. B. Ivanov, G. I. Ivanova, Synthesis and characterization of new galanthamine derivatives comprising peptide moiety. Protein Pept. Lett., 16 (2009) 1024-1028.

63. G. Ivanova, L. S. Serafim, P. C. Lemos, A. M. Ramos, M. A. M. Reis and E. J. Cabrita, Influence of feeding strategies strategies of mixed microbial cultures on the chemical composition and microstructure of copolyesters P(3HB-co-3HV) analyzed by NMR and statistical Analysis, Magn. Reson. Chem. 47, (2009) 497–504.

64. M. Spasova, D. Dagon, G. Ivanova, T. Milkova, Free Radical Scavenging Activity of Hydroxycinnamoyl Amino Acid Amides. Peptides: Breaking Away, Proceedings of the 21st American Peptide Symposium. Michal Lebl (Editor). American Peptide Society, 2009, page 84-85; Biopolymers, 92 (2009) 347.

65. L. Georgiev, M. Spasova, B. Stojkova, E. Draganova,, G. Ivanova, T. Milkova, DPPH radical scavenging effect of N-phenylpropenoyl amides of some biogenic monoamines. Amino acids, 37 (2009) 35.

66. M. Spasova, E. Georgieva, G. Ivanova, T. Milkova, Synthesis of esters of hydroxycinnamic asids with N-protected amino alcohols and evaluation of their radical scavenging activity, Amino acids, 37 (2009) 35.

67. G. Ivanova, B. Yakimova, S. Angelova, I. Stoineva, V. Enchev. Influence of pH on the cis-trans isomerization of valine-proline dipeptide: an integrated NMR and theoretical investigation, J. Mol. Struct., 975 (2010) 330-334.

68. I. Peres, S. Rocha, M. do Carmo Pereira, M. Coelho, M. Rangel, G. Ivanova, NMR structural analysis of epigallocatechin gallate loaded polysaccharide nanoparticles, Carbohydr. Polym., 82 (2010) 861–866. doi:10.1016/j.carbpol.2010.06.007

69. M.G. Chochkova, G. Nikova, G. I. Ivanova, L.N. Georgiev, T.S. Milkova, Radical Scavenging Activity of Hydroxycinnamoylamides of Amino Acids - Precursors of Biogennic Amines, in Peptides, Michal Lebl, Morten Meldal, Knud J. Jensen, Tomas Hoeg-Jensen (Eds), 2010, page 56 –57.

70. N. Markova, V. Enchev, G. Ivanova, Tautomeric equilibria of 5-fluorouracil anionic species in water. J. Phys. Chem. A, 114 (2010) 13154–13162.

71. M. G. Chochkova, A. P. Georgieva , G. I. Ivanova, I. G. Stankova, T. S. Milkova, Synthesis and evaluation of biological activity of new aminoadamantane amides containing hydroxycinnamoyl moiety, Antiviral Res., 90 (2011) A69.

72. D. F. Brougham, G. Ivanova, M. Gottschalk, D.M. Collins, A. Eustace, R. O’Connor, J. Havel. Artificial Neural Networks for Classification in Metabolomic Studies of Whole Cells Using 1H Nuclear Magnetic Resonance, J. Biomedicine Biotechnol., Vol. 2011 (2011), Article ID 158094, 8 pages; doi:10.1155/2011/158094.

73. G. Ivanova, M. Simeonova, E.J. Cabrita, M. Rangel, NMR insight into the supramolecular structure of daunorubicin loaded polymer nanoparticles, J. Phys. Chem. B, 115 (2011) 902–909.

74. N. Christova, B. Tuleva, R. Cohen, G. Ivanova, G. Stoev, M. Stoilova-Disheva, I. Stoineva, Chemical Characterization and Physical and Biological Activities of Rhamnolipids Produced by Pseudomonas aeruginosa BN10. Z. Naturforsch – Sect. C J. Biosci., 66 C (2011) 394-405.

75. L. Georgiev, M. Chochkova, G. Ivanova, H. Najdenski, M. Ninova,T. Milkova. Radical scavenging and antimicrobial activities of cinnamoyl amides of biogenic monoamines, La Rivista Italiana Delle Sostanze Grasse, 89 (2012) 91-102.

76. L. Georgiev, M. Kolev, G. Ivanova, Z. Velkov, Radical Scavenging Activity Modeling of Hydroxycinnamic acid Derivatives. In Topics In Chemistry and Material Science, 2012, in press.

77. C. Queirós, A.M.G. Silva, S.C. Lopes, G. Ivanova, P. Gameiro, M. Rangel, A novel fluorescein-based dye containing a catechol chelating unit to sense iron (III), Dyes and Pigments, 93 (2012) 1447-1455.

78. S. Lopes, M. Simeonova, P. Gameiro, M. Rangel, G. Ivanova, Interaction of 5-fluorouracil loaded nanoparticles with DMPC liposomes used as a cellular membrane model, J. Phys. Chem. B, 116 (2012) 667–675.

79. N. Markova, G. Ivanova, V. Enchev, M. Simeonova, Tacticity of poly(butyl-α-cyanoacrylate) chains in nanoparticles: NMR spectroscopy and DFT calculations, Structural Chemistry, 23 (2012) 815–824.

80. M.G. Chochkova, E.Y. Chorbadzhiyska, G.I. Ivanova, H. Najdenski, M. Ninova and Т.S. Milkova,. Antimicrobial and Radical Scavenging Activities of N-Hydroxycinnamoyl – L-Cysteine and - L -Proline Ethyl Esters, The Natural Products Journal, 2 (2012) 50-54.

81. I. Peres, S. Rocha, M. do Carmo Pereira, G. Ivanova, M. Coelho, Carbohydrate particles as protein carriers and scaffolds: physico-chemical characterization and collagen stability. J. Nanoparticle Res., 14 (2012) 1144-6. DOI 10.1007/s11051-012-1144-6.

82. M.Chochkova, G. Ivanova, A. Galabov, Ts. Milkova,Amides of antiviral drugoseltamivir with antioxidantactive aminoacids:Synthesisand biological activities. Peptides 2012, Proceedings of 32-nd European Peptide Symposium, 580-581, 2012.

83. Lyubomir Georgiev, Maya Chochkova, Iskra Totseva, Katya Seizova, Emma Marinova, Galya Ivanova , Mariana Ninova, Hristo Najdenski, Tsenka Milkova. Anti-tyrosinase, antioxidant and antimicrobial activities of hydroxycinnamoylamides. Med. Chem. Res. 22(9) (2013) 4173-41-82. DOI DOI: 10.1007/s00044-012-0419-x

84. Tânia Moniz, Ana Nunes, Ana M. G. Silva, Carla Queirós, Galya Ivanova, M. S. Gomes, Maria Rangel, Rhodamine labeling of 3-hydroxy-4-pyridinone iron chelators is an important contribution to target Mycobacterium avium infection. J Biol Inorg Chem, 121 (2013) 156-166. doi 10.1016/j.jinorgbio.2013.01.002.

85. Diana Paiva, Galya Ivanova, Maria do Carmo Pereira, Sandra Rocha. Chitosan conjugates for DNA delivery. Phys. Chem. Chem. Phys., 2013, 15 (28), 11893 - 11899. DOI: 10.1039/b000000x

86. M. Chochkova, B. Stoykova, N. Nikolova, L. Nikolaeva-Glomb, G. Ivanova, Ts. Milkova. Biological activity of adamantane analogues. Proceedings of the Fifth International Scientific Conference – FMNS2013 (2013) 17-25.

87. Kiril N. Chuchkov, Rumen K. Georgiev, Galya Ivanova, Angel S. Galabov and Ivanka G. Stankova. New Adamantane Analogues - Synthesis And Antiviral Activity. Proceedings of the Fifth International Scientific Conference – FMNS2013 (2013) 3-9.

88. M. Rangel, T. Moniz,A. Leite, P. Gameiro, G. Ivanova. Fluorescent Iron Chelators with Antimicrobial Activity: Insight on Structure-activity Relationships from Liposome Partition Studies. American Journal of Hematology 88(5) (2013) E130-E131

89. M. Simeonova, M. Rangel, G. Ivanova. NMR study of the supramolecular structure of dual drug-loaded poly(butylcyanoacrylate) nanoparticles. Phys. Chem. Chem. Phys. 15 (2013) 16657--16664. DOI: 10.1039/C3CP51471D.

90. A. Fernandes, G. Ivanova, N. Bras, N. Mateus, M. Ramos, M. Rangel, V. Freitas. Structural characterization of the inclusion complex between equilibrium forms of cyanidin-3-O-glucoside and -cyclodextrin. Carbohydrate Polymers (2013), in press.

91. Maya Chochkova, Boyka Stoykova, Galya Ivanova, Andreas Ranz, Xinghua Guo, Ernst Lankmayr, Tsenka Milkova. N- Hydroxycinnamoyl amides of fluorinated amino acids: synthesis, anti-tyrosinase and DPPH scavenging activities. J. Fluorine Chemistry 156 (2013) 203–208. DOI: 10.1016/j.jfluchem.2013.09.013

92. Maya G. Chochkova, Assya P. Georgieva, Galya Ivanova, Nadya Nikolova, Luchia Mukova, Lubonira Nikolaeva-Glomb, Tsenka Milkova. Synthesis and biological activity of hydroxycinnamoyl containing antiviral drugs. J. Serb. Chem. Soc. 78 (0) (2013) 1–15.