56. P. Karahalios, I. Amarantos, P. Mamos, D. Papaioannou, D. Kalpaxis
Effect of Ethyl and Benzyl Analogues of Spermine on Escherischia Coli Peptidyl-transferase Activity, Polyamine Transport and Cellular Growth
Journal of Bacterioogy, 1999, 181, 3904-3911.
55. Cundari S., Dalpozzo R., De Nino A., Procopio A., Sindona G., Athanassopoulos K.
A facile one-pot synthesis of the very useful building blocks N-Boc-S-alkylatedcysteines
Tetrahedron 1999, 55, 10155-10162
54. G. Balayiannis, I. Argiris, D. Papaioannou, C. Kavounis
(2S,3S) and (2R,3S)-2-[2-(benzyloxy)ethyl]-3-(6-chloro-9H-purin-9-yl)- oxolane
Acta Crystallographica, Section C, 1999, 55, 1005-1008.
53. V. Nastopoulos, G. Karigiannis, P. Mamos, D. Papaioannou, C. Kavounis
(S )-N-Triphenylmethylpyroglutamyl Fluoride
Acta Crystallographica, Section C, 1998, 54, 1718-1720.
52. G. Karigiannis, P. Mamos, G. Balayiannis, I. Katsoulis, D. Papaioannou
Simple Fragment Syntheses of All Four Isomers of the Spermine Alkaloid Kukoamine
Tetrahedron Letters , 1998, 39, 5117-5120.
51. G. Karigiannis, C. Athanassopoulos, P. Mamos, N. Karamanos, D. Papaioannou, G.W.Francis
Preparation and Properties of Enantiomerically Pure Nα-Tritylamino Acid Fluorides
Acta Chemica Scandinavica Series B, 1998, 52, 1144-1150.
50. P. Mamos, E. Dalatsis, C. Athanassopoulos, G. Balayiannis, D. Papaioannou, G.W. Francis
Aminolysis of N-Tritylamino Acid Bemzotriazolyl Esters with Concentrated Aqueous Amines and its Applications in Synthesis
Acta Chemica Scandinavica Series B , 1998, 52 , 227-231.
49. P. Karahalios, P. Mamos, D.H. Vynios, D. Papaioannou, D. Kalpaxis
The effect of acylated polyamine derivatives on polyamine uptake mechanism, cell growth, and polyamine pools in Escherichia coli, and the persuit of structure/activity relationships
European Journal of Biochemistry, 1998, 251, 998-1004.
48. V. Nastopoulos, C. Athanassopoulos, D. Papaioannou, E. Gavuzzo
(S ), (E )-5-Methoxycarbonyl-3-triphenylmethylaminohex-4-en-4-olide
Acta Crystallographica, Section C, 1998, 54, 267-269.
47. V. Nastopoulos, O. Gourgioti, G. Balayiannis, G. Karigiannis, D. Papaioannou, C. Kavounis
(3aR, 7aS )-N-Triphenylmethyl-1,2,3,3a,5,6,7,7a-octahydropyrano[3,2-b]pyrrol-2-one
Acta Crystallographica, Section C, 1997, 53, 1971-1973
46. P. Mamos, D. Papaioannou, C. Kavounis, V. Nastopoulos
(S )-3-(Oγ-Methyl-Nα- triphenylmethylglutamyl)benzotriazole 1-Oxide
Acta Crystallographica, Section C, 1997, 53, 1973-1975.
45. V. Nastopoulos, C. Athanassopoulos, D. Papaioannou, E. Gavuzzo
(S ), (E )-5-Methoxycarbonyl-2-triphenylmethylaminohex-4-en-4-olide
Acta Crystallographica, Section C, 1996, 52, 3227-3229.
44. D. W. Aksnes, C. Athanassopoulos, V. Magafa, A. Aaberg, G.W. Francis, D. Papaioannou
NMR Studies of TRH and Analogues Incorporating D-Histidine and 4-Hydroxy-L- Proline
Acta Chemica Scandinavica Series B, 1996, 50, 411-416.
43. F. Artuso, G. Sindona, C. Athanassopoulos, G. Stavropoulos, D. Papaioannou
Kainic Acid as Conformationally Constrained Glutamic Acid Analog in Peptide Synthesis
Tetrahedron Letters , 1995, 36 , 9309-9312.
42. C. Athanassopoulos, D. Papaioannou, A. Napoli, C. Siciliano, G. Sindona
The Formation by Fast Atom Bombardment of Radical Molecular Cations by Electron-Donor-Acceptor (EDA) Complexes from Tosylated Amino Acid Esters
Journal of Mass Spectrometry, 1995, 30, 1284-1290.
41. P. Mamos, G. Karigiannis, C. Athanassopoulos, S. Bichta, D. Kalpaxis, D. Papaioannou
Simple Total Syntheses of N-Substituted Polyamine Derivatives Using N-Tritylated Amino Acids
Tetrahedron Letters , 1995, 36 , 5187-5190.
40. T. Duvold, D. Papaioannou, G.W. Francis
Benzyl 2,3-O-isopropylidene-β-D-ribo-1,4-pentodialdofuranoside as a D-Ribose Chiron for the Synthesis of Terpenyl Tetraols and Aminotriols.
Tetrahedron Letters , 1995, 36 , 3153-3156.
39. C. Athanassopoulos, Ch. Tzavara, D. Papaioannou, G. Sindona, H.L.S. Maia
Model Studies towards the Applicability of the Readily Available (S)-N-Tritylaspartic Anhydride in the Synthesis of Amino Acids and Peptides.
Tetrahedron, 1995, 51, 2679-2688.
38. D. Papaioannou, C. Athanassopoulos, V. Magafa, G. Karigiannis, N. Karamanos, G. Stavropoulos, A. Napoli, G. Sindona, G.W. Aksnes, G.W. Francis, A. Aaberg
Facile Preparation of the 1-Hydroxybenzotriazolyl Ester of N-Tritylpyroglutamic Acid and its Applications to the Synthesis of TRH, [D-His2]TRH and Analogues Incorporating cis and trans-4-Hydroxy-L-Proline
Acta Chemica Scandinavica Series B, 1995, 49, 103-114.
37. E. Sivvas, G. Voukelatou, D. Papaioannou, A. Aletras, E.D. Kouvelas
A Novel Photoaffinity Ligand for Kainate Sites Labels Two Polypeptides with Molecular Mass 45 and 33.5 KDa in Chick Cerebellum
Journal of Neurochemistry, 1994, 63, 1544-1550.
36. D. Papaioannou, M. Sivas, E. Kouvelas, G. W. Francis, D. W. Aksnes
Synthesis and NMR Studies of N-Substituted Derivatives of Kainic Acid Dimethyl Ester
Acta Chemica Scandinavica Series B, 1994, 48, 831-836.
35. D. Papaioannou, C. Athanassopoulos, V. Magafa, N. Karamanos, G. Stavropoulos, A. Napoli, G. Sindona, G.W. Aksnes, G.W. Francis
Redox N-Alkylation of Tosyl Protected Amino Acid and Peptide Esters
Acta Chemica Scandinavica Series B, 1994, 48, 324-333.
34. E. Sivvas, G. Voukelatou, E. Kouvelas, G.W. Francis, D.A. Aksnes, D. Papaioannou
Synthesis of a New Kainic Acid Based Selective Ligand as a Photoaffinity Label of non-NMDA Excitatory Amino Acid Receptors in Chicken Brain
Acta Chemica Scandinavica Series B, 1994, 48, 76-79.
33. N. Karamanos, E. Sivvas, D. Papaioannou
Rapid Assay for the Determination of two Photoactivatible Kainic Acid Analogs by High-Performance Liquid Chromatography
Journal of Liquid Chromatography, 1994, 17(3), 521-532.
32. D.W. Aksnes, G.W. Francis, D. Papaioannou
Assignments of the 1H and 13C NMR Spectra of trans-4-Hydroxy-N-9-fluorenylmethoxy-carbonyl-L-proline Using One- and Two-Dimensional NMR Spectroscopy
Magnetic Resonance in Chemistry, 1993, 31, 876-877.
31. D. Stavropoulos, K. Karagiannis, D. Vynios, D. Papaioannou, D.W. Aksnes, N.A. Froystein, G.W. Francis
Solid-Phase Synthesis and Spectroscopic Studies of TRH Analogs Incorporating cis- and trans-4-Hydroxy-L-proline
Acta Chemica Scandinavica Series B, 1991, 45, 1047-1054.
30. G.W. Francis, D. Papaioannou, D.W. Aksnes, T. Brekke, K. Maartmann-Moe, N.Taelnes
Approaches to the Synthesis of Terpenyl Carbohydrates
Acta Chemica Scandinavica Series B, 1991, 45, 652-654.
29. D. Papaioannou, G.W. Francis, K. Maartmann-Moe
Crystal Structure of Methyl (2S, 3S)-3-Triphenylmethylaminooxolan-2-ylacetate
Acta Chemica Scandinavica Series B, 1991, 45, 327-328.
28. D. Papaioannou, K. Barlos, G. Stavropoulos, G.W. Francis, D.W. Aksnes, K. Maartmann-Moe
Synthesis of Conformationally Restricted Chiral γ-Aminobutyric Acid (GABA) Analogs
Acta Chemica Scandinavica Series B, 1991, 45, 99-104.
27. D. Papaioannou, K. Barlos, G.W. Francis, T. Brekke, D.W. Aksnes, K. Maartmann-Moe
Reinvestigation of the Base Induced Ring Closure of Methylsulfonium Salts of N-Trityl-(S)-methioninehydroxamide and Derivatives
Acta Chemica Scandinavica Series B , 1990, 44, 189-194.
26. G. Stavropoulos, D. Papaioannou, K. Karagiannis, M. Vlassis, V. Nastopoulos
Structure of cis-N-Triphenylmethyl-4-hydroxy-L-proline Methyl Ester
Acta Crystallographica, Section C, 1990, 1461-1464.
25. D. Papaioannou, G. Stavropoulos, K. Karagiannis, G.W. Francis, T. Brekke, D.W. Aksnes
Simple Synthesis of cis-4-Hydroxy-L-proline and Derivatives Suitable for Use as Intermediates in Peptide Synthesis
Acta Chemica Scandinavica Series B, 1990, 44, 243-251.
24. D. Papaioannou, G.W. Francis, K. Maartmann-Moe
Structure of (1R, 5S, 8R)-3,3-Dimethyl-8-methoxy-2,4,7-trioxabicyclo [3,3,0]-octan-6-one
Acta Crystallographica, Section C , 1990, 156-158.
23. D. Papaioannou, G.W. Francis, D.W. Aksnes, T. Brekke, K. Maartmann-Moe
Studies on the Oxidation of Methyl 2,3-O-Isopropylidene-β-D-ribofuranoside with Pyridinium Dichromate. Identification of Unexpected By-products
Acta Chemica Scandinavica Series B , 1990, 44 , 90-95.