Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Gianni Porzi"'
Publikováno v:
Journal of Physical Organic Chemistry. 25:132-141
The ammonolysis of three morpholine-2,5-dione derivatives was investigated and the mechanism ascertained by kinetic studies and theoretical calculations. The kinetics, followed by high-performance liquid chromatography analysis, evidenced the presenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23b991086056b193ad7490c74d57d787
https://doi.org/10.1002/poc.1884
https://doi.org/10.1002/poc.1884
Autor:
Daniele Balducci, Gianni Porzi
Publikováno v:
Helvetica Chimica Acta. 94:127-135
The stereoselective synthesis of the new nonproteinogenic branched tetrapeptides 9a–9d and 15a,b, containing two L-valine units and unnatural α-amino acids, was accomplished starting from the chiral synthon 1a, a monolactim ether easily obtained f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47a78ac0880f8c8506e25f4b3e8f55d6
https://doi.org/10.1002/hlca.201000202
https://doi.org/10.1002/hlca.201000202
Publikováno v:
Tetrahedron: Asymmetry. 20:1398-1401
A new, practical and very convenient stereocontrolled synthesis of ( S )-2′,6′-dimethyltyrosine [( S )-Dmt] 4 was accomplished in a good yield, starting from the chiral synthon 1,4- N , N -[( S )-phenylethyl]-piperazine-2,5-dione 1 . The procedur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60a698eb642c758a4ce432e8dcf3ee43
https://doi.org/10.1016/j.tetasy.2009.06.004
https://doi.org/10.1016/j.tetasy.2009.06.004
Publikováno v:
Journal of physical organic chemistry (Online) 21 (2008): 163–172. doi:10.1002/poc.1301
info:cnr-pdr/source/autori:Arcelli Antonio; Porzi Gianni; Rinaldi Samuele; Sandri Monica/titolo:Electrostatic interactions effect in the aminolysis of some beta-lactams in the presence of poly(ethyleneimine): structure-reactivity/doi:10.1002%2Fpoc.1301/rivista:Journal of physical organic chemistry (Online)/anno:2008/pagina_da:163/pagina_a:172/intervallo_pagine:163–172/volume:21
info:cnr-pdr/source/autori:Arcelli Antonio; Porzi Gianni; Rinaldi Samuele; Sandri Monica/titolo:Electrostatic interactions effect in the aminolysis of some beta-lactams in the presence of poly(ethyleneimine): structure-reactivity/doi:10.1002%2Fpoc.1301/rivista:Journal of physical organic chemistry (Online)/anno:2008/pagina_da:163/pagina_a:172/intervallo_pagine:163–172/volume:21
The aminolysis reaction of a series of β-lactams in the presence of poly(ethyleneimine) (PEI) at 30°C and pH = 8.40 has been studied. The substrates investigated follow a pseudo first order rate, except two β-lactams which show a two step consecut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05d471c47ec1ed5d7b3dcaff6a30d35b
https://doi.org/10.1002/poc.1301
https://doi.org/10.1002/poc.1301
Publikováno v:
Tetrahedron: Asymmetry. 17:1521-1528
A simple stereoselective synthesis of cyclic synthons 4a , b and 10a , b , derived from an l -valine unit and an unnatural derivative of the aspartic acid, has been accomplished starting from the chiral synthon 1 and following the procedure already r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a42d5af690bc1ddfec95a434108f493
https://doi.org/10.1016/j.tetasy.2006.05.021
https://doi.org/10.1016/j.tetasy.2006.05.021
Autor:
Sergio Sandri, Enrico Emer, Daniele Balducci, Gianni Porzi, Fabio Piccinelli, Maurizio Recanatini
Publikováno v:
Tetrahedron: Asymmetry. 16:3785-3794
Stereoselective syntheses of non-proteinogenic di- 14a , b , 15a , b and 16a , b and tripeptides 14c , 15c and 16c containing an l -valine unit and a cyclic unnatural α-amino acid have been accomplished starting from the l -valine derived chiral syn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::678a8317ed1a25bd14988247fd950b2d
https://doi.org/10.1016/j.tetasy.2005.10.030
https://doi.org/10.1016/j.tetasy.2005.10.030
Publikováno v:
Tetrahedron: Asymmetry. 16:1453-1462
Stereoselective synthesis of unusual nonproteinogenic dipeptides 7a , b , d , e and h and 13b and i , containing an l -valine unit and a cyclic unnatural α-amino acid, has been accomplished starting from the l -valine derived chiral synthon 1 . The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a60586ebc016ac93717690252526866
https://doi.org/10.1016/j.tetasy.2005.03.006
https://doi.org/10.1016/j.tetasy.2005.03.006
Publikováno v:
Journal of Physical Organic Chemistry. 18:255-263
Kinetic studies of the aminolysis of benzylpenicillin (BP) in poly(ethylenimine) (PEI) showed a complicated rate behaviour owing to the strong substrate–polyelectrolyte interaction. The results were interpreted by the formation of an unreactive and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19464973f0d648b3ec8b6bd9214a714c
https://doi.org/10.1002/poc.877
https://doi.org/10.1002/poc.877
Publikováno v:
Tetrahedron: Asymmetry. 15:1085-1093
An efficient enantioselective synthesis of pseudotripeptides 5 , 8a – d and 13a and b incorporating a 2,6-diamino-4-methylene-1,7-heptandioic acid residue, has been accomplished starting from the glycine derived chiral synthon 1 (from l -valine). T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74b97372f37b788f769b46410e3b8c18
https://doi.org/10.1016/j.tetasy.2004.02.005
https://doi.org/10.1016/j.tetasy.2004.02.005
Publikováno v:
Tetrahedron: Asymmetry. 14:393-398
An efficient new stereocontrolled synthesis of (2 R ,6 R )-(+)- and (2 S ,6 S )-(−)-2,6-diamino-4-methylene-1,7-heptanedioic acid 8a and 9a , respectively, has been accomplished starting from the glycine-derived chiral synthon 1 . The enantiomerica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d4a58a8866961ff9eecc0f718e7e32a
https://doi.org/10.1016/s0957-4166(02)00834-0
https://doi.org/10.1016/s0957-4166(02)00834-0