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Complete structural and spectral assignment of oxoisoaporphines by HMQC and HMBC experiments

✍ Scribed by Eduardo Sobarzo-Sánchez; Bruce K. Cassels; Carolina Jullian; Luis Castedo

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
96 KB
Volume
41
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The oxoisoaporphines 2,3‐dihydro‐7__H__‐dibenzo[de,h]quinolin‐7‐one, 2,3‐dihydro‐5‐methoxy‐7__H__‐dibenzo [de,h] quinolin‐7‐one, 5‐methoxy‐6‐hydroxy‐2,3‐dihydro‐7__H__‐dibenzo[de,h]quinolin‐7‐one, 5,6‐dimethoxy‐2,3‐dihydro‐7__H__‐dibenzo[de,h]quinolin‐7‐one and 5,6‐methylenedi‐oxy‐2,3‐dihydro‐7__H__‐dibenzo[de,h]quinolin‐7‐one were prepared by cyclization of phenylethylaminophthalides with polyphosphoric acid or by treating 1‐(2‐carboxyphenyl)‐3,4‐dihydroisoquinoline hydrochloride with sulfuric acid at 0 °C. The structures were confirmed and ^1^H and ^13^C NMR spectra were completely assigned using a combination of one‐ and two‐dimensional NMR techniques. Copyright © 2003 John Wiley & Sons, Ltd.

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