Synthesis, structure, and stereospecific cross-[2+2] photocycloaddition of pseudodimeric complexes based on ammonioalkyl derivatives of styryl dyes
作者:Sergey P. Gromov、Artem I. Vedernikov、Sergey K. Sazonov、Lyudmila G. Kuz’mina、Natalia A. Lobova、Yuri A. Strelenko、Judith A. K. Howard
DOI:10.1039/c5nj03500g
日期:——
Two different styryl dyes form pseudodimeric complexes via hydrogen bonding and stacking interactions; irradiation of these complexes gives rctt-cyclobutane derivatives.
Synthesis and photochemical study of a supramolecular pseudodimeric complex of 4-styrylpyridinium derivatives
作者:E. N. Ushakov、A. I. Vedernikov、S. K. Sazonov、L. G. Kuz´mina、M. V. Alfimov、J. A. K. Howard、S. P. Gromov
DOI:10.1007/s11172-015-0901-y
日期:2015.3
diffraction. The photochemical properties of this compound and its complexation with a 18-crown-6-containing derivative of 4-styrylpyridine were studied by electronic spectroscopy. These compounds form a supramolecular complex (logK = 3.89 in MeCN at an ionic strength of 0.01 mol L–1), in which the styryl chromophores are arranged one above another due to stacking interactions. The complexation activates
Design of crystal packings of styrylheterocycles and [2+2] photocycloaddition reactions in their single crystals 7. Crystal structures of 4-styrylpyridine hydroperchlorates and solid-state [2+2] autophotocycloaddition reactions of these compounds
作者:L. G. Kuz’mina、A. I. Vedernikov、S. K. Sazonov、N. A. Lobova、A. V. Churakov、E. Kh. Lermontova、J. A. K. Howard、M. V. Alfimov、S. P. Gromov
DOI:10.1007/s11172-011-0259-8
日期:2011.8
4-tetrasubstituted cyclobutanes was investigated. Unlike neutral styrylpyridines, their protonated forms are better preorganized for the solid-state PCA reaction. According to the X-ray diffraction data, the cations of these compounds, like related styryl dyes, are mainly stacked in crystals in a head-to-head or head-to-tail fashion with equal probability. Only in the latter type of stacks, the PCA
Flexible N-methyl-4-phenyl-1,2,3,6-tetrahydropyridine analog: synthesis and monoamine oxidase catalyzed bioactivation
作者:S. Mbera Ngale Efange、R. H. Michelson、R. P. Remmel、R. J. Boudreau、A. K. Dutta、A. Freshler
DOI:10.1021/jm00174a007
日期:1990.12
Eighteen analogues of N-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) were synthesized and evaluated as substrates of monoamine oxidase. In general, the flexible analogues, characterized by the presence of a methylene (or ethylene) bridge between the aryl/heteroaryl and tetrahydropyridyl moieties, were better substrates of the enzyme than the conformationally restricted MPTP. It is suggested that the increased oxidative activity of these flexible analogues reflects enhanced binding due to the ability of the C-4-aryl/heteroaryl substituent to gain access to a hydrophobic pocket within the substrate binding site.
EFANGE, S. M. N.;MICHELSON, R. H.;REMMEL, R. P.;BOUDREAU, R. J.;DUTTA, A.+, J. MED. CHEM., 33,(1990) N2, C. 3133-3138
作者:EFANGE, S. M. N.、MICHELSON, R. H.、REMMEL, R. P.、BOUDREAU, R. J.、DUTTA, A.+