Results 211 to 220 of about 28,205 (240)

Computer-assisted structure elucidation

Fresenius' Zeitschrift für analytische Chemie, 1982
Program case, an evolving computer model of the structure elucidation process, treats three major tasks: reduction of chemical and spectral properties to their structural implications, generation of complete molecular structures compatible with the structural features identified, and ranking these structures by comparing predicted and observed spectral
Morton E. Munk   +3 more
openaire   +2 more sources

ChemInform Abstract: Computer‐Assisted Structure Elucidation

ChemInform, 1992
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
L. CHEN, M. ZHANG
openaire   +1 more source

Automated classification of candidate structures for computer-assisted structure elucidation

Journal of Chemical Information and Computer Sciences, 1988
In computer-assisted structure elucidation, a large number of candidate structures for the unknown compound can be generated. A computer program designed to aid in the recognition of significant differences between these structures is described. The goal of the program is to group the candidates into meaningful classes with a minimum of input from the ...
A H, Lipkus, M E, Munk
openaire   +2 more sources

Structure Revision of Asperjinone Using Computer-Assisted Structure Elucidation Methods

Journal of Natural Products, 2013
The elucidated structure of asperjinone (1), a natural product isolated from thermophilic Aspergillus terreus, was revised using the expert system Structure Elucidator. The reliability of the revised structure (2) was confirmed using 180 structures containing the (3,3-dimethyloxiran-2-yl)methyl fragment (3) as a basis for comparison and whose chemical ...
Mikhail, Elyashberg   +3 more
openaire   +2 more sources

Computer-Assisted Structure Elucidation

2007
This article describes NMR approaches to determine the molecular structure of a small organic molecule. The use of one- and two-dimensional spectra is described. The proton and carbon shifts determined are used to identify the best molecular matches among more than 30 million PubChem structures. Molecular carbon skeletons can be generated from 2-D homo-
openaire   +1 more source

Are Deterministic Expert Systems for Computer‐Assisted Structure Elucidation Obsolete?

ChemInform, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Mikhail E, Elyashberg   +4 more
openaire   +2 more sources

Computer‐assisted elucidation of structures of natural products

Phytochemical Analysis, 1992
AbstractAn historical survey of the first computer programs capable of handling spectroscopic data and of transforming them into possible molecular structures is exemplified by some applications. Technological improvements of nuclear magnetic resonance spectroscopy now allow the direct collection of connectivity relationships between atoms, and the ...
G. Massiot, J. M. Nuzillard
openaire   +1 more source

Computer-Assisted Approach to Structural Elucidation of Lignans

Spectroscopy Letters, 2008
ABSTRACT This paper reports an expert system (SISTEMAT) developed for structural determination of diverse chemical classes of natural products, including lignans, based mainly on 13C NMR and 1H NMR data of these compounds. The system is composed of five programs that analyze specific data of a lignan and shows a skeleton probability for the compound ...
Mara B. Costantin   +3 more
openaire   +1 more source

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