Enantiomeric Mixtures in Natural Product Chemistry: Separation and Absolute Configuration Assignment
Molecules, 2018 Chiral natural product molecules are generally assumed to be biosynthesized in an enantiomerically pure or enriched fashion. Nevertheless, a significant amount of racemates or enantiomerically enriched mixtures has been reported from natural sources ...
Andrea N. L. Batista +3 more
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On the relation of protein dynamics and exciton relaxation in pigment–protein complexes: An estimation of the spectral density and a theory for the calculation of optical spectra [PDF]
, 2002 A theory for calculating time– and frequency–domain optical spectra of pigment–protein complexes is presented using a density matrix approach. Non-Markovian effects in the exciton–vibrational coupling are included.
Marcus, R. A., Renger, Thomas
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Nature Communications, 2020 Vibrational circular dichroism (VCD) spectroscopy can be useful for determining the absolute configuration of chiral molecules, as long as the signal intensities are high enough. Here, the authors establish the absolute configurations of two large chiral
Jiangkun Ouyang +13 more
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Molecules, 2022 A novel α-tetrazole-substituted 1,1′-binaphthylazepine chiral catalyst has been synthesized and its absolute configuration has been determined by DFT computational analysis of the vibrational circular dichroism (VCD) spectrum of its precursor.
Assunta Summa +7 more
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Elucidating the structure of chiral molecules by using amplified vibrational circular dichroism: from theory to experimental realization [PDF]
, 2015 Recent experimental observations of enhanced vibrational circular dichroism (VCD) in molecular systems with low-lying electronically excited states suggest interesting new applications of VCD spectroscopy.
Buma, Wybren Jan +3 more
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Self-assembly, nematic phase formation and organocatalytic behaviour of a proline-functionalized lipopeptide [PDF]
, 2020 The self-assembly of the amphiphilic lipopeptide PAEPKI-C16 (P = proline, A = alanine, E = glutamic acid, K = lysine, I = isoleucine, C16 = hexadecyl) was investigated using a combination of spectroscopic, microscopic and scattering methods and compared ...
Aguilar, Andrea M. +7 more
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Transient vibrational circular dichroism spectrometer: technical development
EPJ Web of Conferences, 2010 We recently reported the first measurements of transient VCD in the C-H-stretch region following visible excitation of cobalt(-)-spartein complex (Co(sp)Cl2) with picosecond time resolution [1].
Helbing J., Bonmarin M.
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Isolating the chiral contribution in optical two-dimensional chiral spectroscopy using linearly polarized light [PDF]
, 2017 The full development of mono- or multi-dimensional time-resolved spectroscopy techniques incorporating optical activity signals has been strongly hampered by the challenge of identifying the small chiral signals over the large achiral background. Here we
Collini, Elisabetta +2 more
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Molecules, 2019 Radicinin and cochliotoxin (1 and 2) two phytotoxic pyranpyran-4,5-diones were isolated together with their close metabolites 3-epi-radicinin, radicinol, and its 3-epimer (3−5), from the culture filtrates of Cochliobolus australiensis, a fungus ...
Ernesto Santoro +7 more
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Dissociative photoionization of NO across a shape resonance in the XUV range using circularly polarized synchrotron radiation. [PDF]
, 2019 We report benchmark results for dissociative photoionization (DPI) spectroscopy and dynamics of the NO molecule in the region of the σ* shape resonance in the ionization leading to the NO+(c3Π) ionic state.
Born M. +8 more
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