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Substructure Elucidation and Chemical Shift Estimation Using the Nuclear Magnetic Resonance Spectral Database

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Abstract

A computer system for substructure elucidation and chemical shift estimation by the use of nuclear magnetic resonance (NMR) spectra is described. In this system, substructures in a molecule can be elucidated by specifying chemical shift values or ranges, and conversely chemical shift values can be estimated by specifying substructures for both ’H- and 13C-NMR data. The retrieval of data can be performed interactively between ’H- and 13C-NMR data. It is possible to estimate all chemical shift values for a compound by giving its chemical structure. The search file for these purposes is created for signals (or signal groups) from a large number of 1H- and 13C-NMR spectra in our database. The information contained in the search file consists of substructures and the corresponding chemical shift values. A line notation system has been developed to plot chemical structures with spectral assignments of NMR signals and to extract substructures corresponding to particular chemical shift values.

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Yamamoto, O., Hayamizu, K. & Yanagisawa, M. Substructure Elucidation and Chemical Shift Estimation Using the Nuclear Magnetic Resonance Spectral Database. ANAL. SCI. 5, 645–650 (1989). https://doi.org/10.2116/analsci.5.645

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  • DOI: https://doi.org/10.2116/analsci.5.645

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