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• W2930481523 endingPage "6164" @default.
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• W2930481523 abstract "(1R,10bR)-1'-((R)-1,2-Dihydroxyethyl)-1-hydroxy-8,9-dimethoxy1,5,6,10b-tetrahydropyrrolo [2,1-a]isoquinolin-3(2H)-one, an analogue of (-)-crispine A, with three stereogenic centers is synthesized and its absolute configuration (AC) established using the combined information derived from the synthetic scheme and single crystal X-ray diffraction data. The experimental chiroptical spectra (namely, optical rotatory dispersion (ORD), electronic circular dichroism (ECD), and vibrational circular dichroism (VCD)) and the corresponding quantum chemical (QC) predicted spectra for all diastereomers are used to evaluate the AC. The AC of the synthesized compound could be correctly established using any one of the three chiroptical spectroscopic methods (ORD, ECD, or VCD) when the relative configuration is constrained to be that derived from X-ray data or when the ACs of two of the chiral centers are constrained to be those derived from the synthetic scheme. In the absence of this outside information, the QC predicted ORD, ECD, and VCD for incorrect diastereomers are also found to satisfactorily reproduce the corresponding experimental spectra. Nevertheless, incorrect diastereomers could be eliminated when combined electronic dissymmetry factor (EDF) and vibrational dissymmetry factor (VDF) spectral analyses are included, leaving the correct diastereomer as the sole choice. Thus, the combined EDF and VDF spectral analysis is seen to be a helpful diastereomer discrimination tool." @default.
• W2930481523 created "2019-04-11" @default.
• W2930481523 creator A5005125692 @default.
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• W2930481523 date "2019-04-02" @default.
• W2930481523 modified "2023-09-27" @default.
• W2930481523 title "Dissymmetry Factor Spectral Analysis Can Provide Useful Diastereomer Discrimination: Chiral Molecular Structure of an Analogue of (−)-Crispine A" @default.
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• W2930481523 doi "https://doi.org/10.1021/acsomega.8b03678" @default.
• W2930481523 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6648312" @default.
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• W2930481523 hasPublicationYear "2019" @default.
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