Zobrazeno 1 - 10
of 117
pro vyhledávání: '"Marino, Cavazza"'
Publikováno v:
PLoS ONE, Vol 5, Iss 5, p e10617 (2010)
BACKGROUND: It is well known that, stemming from the mutual interplay between chromophores, circular dichroism (CD) is a powerful technique to deal with structural problems for both the small organic molecule and the biopolymer. However, quantitative
Externí odkaz:
https://doaj.org/article/7075a8e76a8c46baa1a5afd22db080e4
Publikováno v:
PLoS ONE, Vol 5, Iss 7 (2010)
Externí odkaz:
https://doaj.org/article/cd8b616794084e4fa7c23f44f371f65d
Autor:
Marino Cavazza, Tiziana Funaioli, Carlo Alberto Veracini, Valentina Domenici, Mario Cifelli, Maurizio Zandomeneghi, Benedetta Mennucci
Publikováno v:
Chirality. 25:648-655
The synthesis of new bitropone derivatives, namely, 3,3'-biphenyl-2,2'-bitropone and 7,7'-biphenyl-2,2'-bitropone, are reported. Isolation of enantiomers arising from restricted rotation around the C-C bond connecting the tropone moieties was attempt
Autor:
Marino Cavazza, Tiziana Funaioli
Publikováno v:
Synthetic Communications. 39:1592-1600
An efficient homocoupling of 2-halotropones, to afford 2,2′-bitropones, occurs in toluene at rt in the presence of stoichiometric amounts of [Ni(cod)2] and tris(1-pyrazolyl)methane ligand, in a 1:1 molar ratio. This methodology was extended to aryl
Autor:
Francesco Pergola, Calogero Pinzino, Marino Cavazza, Lucio Pardi, Lamberto Nucci, Francesco Pietra
Publikováno v:
Tetrahedron. 58:9553-9558
Cathodic reduction of 10-ethylthiocolchicide ( 2 ), 9-ethoxyisocolchicide ( 3 ), 9-methylthioisocolchicide ( 4 ), 9- n -butylthioisocolchicide ( 5 ), and 9-phenylthioisocolchicide ( 6 ) at a platinum electrode in DMF under N 2 gave the corresponding
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :560-564
Two novel regioisomers of colchicine 1, pseudocolchicine ((Ra,7S)-N-(1,2,3,11-tetramethoxy-10-oxo-5,6,7,10-tetrahydrobenzo[a]heptalen-7-yl)acetamide 11) and neocolchicine ((Ra,7S)-N-(1,2,3,10-tetramethoxy-11-oxo-5,6,7,11-tetrahydrobenzo[a]heptalen-7-
Publikováno v:
Tetrahedron Letters. 41:9129-9133
The isolation and dichroic behavior of atropisomeric colchicinoids is described here for the first time. The cases range from stable to rapidly interconverting atropisomeric couples.
Publikováno v:
Liquid Crystals. 27:621-627
2H NMR spectroscopy is employed to investigate the orientational order, molecular structure and phase transitions of the chiral smectic liquid crystal 1-methylheptyl 4'-(4-n-decyloxybenzoyloxy)biphenyl-4-carboxylate (10B1M7), showing smectic A, C* an
Autor:
Lamberto Nucci, Marino Cavazza, Francesco Pergola, Elisa Pannocchia, Lucio Pardi, Francesco Pietra, Calogero Pinzino
Publikováno v:
Tetrahedron. 55:11601-11608
Colchicine ( 1 ), a potently antimitotic alkaloid and useful laboratory tool in cancer research, undergoes cathodic reduction in DMF forming and ESR-observable radical anion ( 1r ) which is characterized by the isotropic hyperfine coupling constants
Autor:
Francesco Pietra, Marino Cavazza
Publikováno v:
Tetrahedron. 54:14059-14064
Condensation of colchicinoids and isocolchicinoids with amidines in dry benzene affords regioselectively 1,3-diazaazulene derivatives: ipso -substitution-condensation products (e.g. 7 ) are best obtained from cycloheptatrienone-ring deactivated subst