Synthesis and total assignment of 1H and 13C NMR spectra of new oxoisoaporphines by long-range heteronuclear correlations |
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Authors: | Sobarzo-Sánchez Eduardo De la Fuente Julio Castedo Luis |
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Affiliation: | Department of Organic Chemistry and C.S.I.C. Associated Unit, Faculty of Chemistry, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain. esobarzo@usc.es |
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Abstract: | The new oxoisoaporphines 7H-dibenzo[de,h]quinolin-7-one, 5-methoxy-7H-dibenzo[de,h]quinolin-7-one, 5-methoxy-6-hydroxy-7H-dibenzo[de,h]quinolin-7-one, 5-hydroxy-7H-dibenzo[de,h]quinolin-7-one and 5-methoxy-6H-dibenzo[de,h]quinolin-6-one were prepared either by oxidation of their 2,3-dihydro derivatives or by heating (2'-(3,4-dihydro-6,7-dimethoxyisoquinolin-1'-yl)phenyl)methylbenzoate with an acetic acid/sulfuric acid mixture at 100 degrees C. The structures were confirmed and 1H and 13C NMR spectra were completely assigned using two-dimensional NMR techniques. |
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Keywords: | 1H NMR 13C NMR HMQC HMBC oxoisoaporphines 7H‐dibenzo[de,h]quinolin‐7‐ones 6H‐dibenzo[de,h]quinolin‐6‐one |
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