Results 41 to 50 of about 3,055,660 (264)

Chiroptical studies on brevianamide B : vibrational and electronic circular dichroism confronted [PDF]

open access: yes, 2015
Chiroptical spectroscopy, such as electronic circular dichroism (ECD) and vibrational circular dichroism (VCD) are highly sensitive techniques to probe molecular conformation, configuration, solvation and aggregation.
Bultinck, Patrick   +7 more
core   +2 more sources

Structural Revision and Absolute Configuration of Burnettramic Acid A.

open access: yesOrganic Letters, 2019
The recently discovered antibiotic burnettramic acid A (1) and three new congeners, burnettramic acids C-E (2-4), were identified from the co-cultures of two marine Aspergillus strains.
Jiao Li   +7 more
semanticscholar   +1 more source

Asymmetric microbial reduction of ketones: absolute configuration of trans-4-ethyl-1-(1S-hydroxyethyl)cyclohexanol [PDF]

open access: yes, 2009
A set of five fungal species, Botrytis cinerea, Trichoderma viride and Eutypa lata, and the endophytic fungi Colletotrichum crassipes and Xylaria sp., was used in screening for microbial biocatalysts to detect monooxygenase and alcohol dehydrogenase ...
Aleu Casatejada, Josefina   +4 more
core   +2 more sources

Assigning the absolute configuration of single aliphatic molecules by visual inspection

open access: yesNature Communications, 2018
Deciphering absolute configuration of a single molecule by direct visual inspection is the next step in compound identification, with far-reaching implications for medicinal chemistry, pharmacology, and natural product synthesis.
D. Ebeling   +7 more
semanticscholar   +1 more source

The molecular and crystal structure of (+)-mianserin hydrobromide [PDF]

open access: yes, 1973
X-ray analysis of crystals of (+)-mianserin hydrobromide (1,2,3,4,10,14b-hexahydro-2-methyl-dibenzol[c,f]pyrazino[1,2-a]azepine) has established the stereochemistry and absolute configuration of this compound (S at 14b).\ud \ud The crystals are ...
Feil, D., Ru, C. van
core   +3 more sources

Redetermination and absolute configuration of berkeleydione

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
The crystal structure of the title compound, berkeleydione [systematic name; (5aS,7R,9S,11R,11aS)-methyl 9-hydroxy-1,1,5,7,9,11a-hexamethyl-14-methylidene-3,8,10-trioxo-1,3,4,5a,6,7,8,9,10,11,11a,12-dodecahydro-7,11-methanocycloocta[4,5]cyclohepta[1,2-c ...
Andrea Stierle   +2 more
doaj   +1 more source

Redetermination and absolute configuration of atalaphylline

open access: yesActa Crystallographica Section E, 2010
The title acridone alkaloid [systematic name: 1,3,5-trihydroxy-2,4-bis(3-methylbut-2-enyl)acridin-9(10H)-one], C23H25NO4, has previously been reported as crystallizing in the chiral orthorhombic space group P212121 [Chantrapromma et al. (2010).
Hoong-Kun Fun   +2 more
doaj   +1 more source

A Hybrid Multi-Distance Phase and Broadband Spatially Resolved Spectrometer and Algorithm for Resolving Absolute Concentrations of Chromophores in the Near-Infrared Light Spectrum [PDF]

open access: yes, 2010
For resolving absolute concentration of tissue chromophores in the human adult brain with near-infrared spectroscopy it is necessary to calculate the light scattering and absorption, at multiple wavelengths with some depth resolution.
Cooper, CE   +5 more
core   +1 more source

Redetermination and absolute configuration of 7α-hydroxyroyleanone

open access: yesActa Crystallographica Section E, 2010
The title compound [systematic name: 7α,12-dihydroxy-8,12-abietadiene,11,14-dione or (4bS,8aS,10R)-3,10-dihydroxy-2-isopropyl-4b,8,8-trimethyl-1,4,4b,5,6,7,8,8a,9,10-decahydrophenanthrene-1,4-dione], C20H28O4, is an abietane diterpenoid, which ...
Ibrahim Abdul Razak   +4 more
doaj   +1 more source

Photoelectron Circular Dichroism as a Probe of Chiral Hydrocarbons

open access: yesChemistry, 2022
The sensitivity of Photoelectron Circular Dichroism (PECD) in the angular distribution of photoelectrons, a recent chiral technique, to detect chirality in pure hydrocarbons is investigated in a number of benchmark molecules.
Piero Decleva
doaj   +1 more source

Home - About - Disclaimer - Privacy