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Isolation and spectral study of 4-methyl-6,8-dihydroxy-7H-benz[de]anthracen-7-one

✍ Scribed by H. M. Wang; W. Shi; Y. K. Xu; P. Wang; W. Chen; Y. Liu; M. J. Lü; J. Q. Pa

Publisher: John Wiley and Sons
Year: 2003
Tongue: English
Weight: 91 KB
Volume: 41
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1148

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✦ Synopsis

Abstract

4‐Methyl‐6,8‐dihydroxy‐7__H__‐benz[de]anthracen‐7‐one was isolated from the sap of Aloe by column chromatography. Its ^1^H and ^13^C NMR spectra were completely assigned by utilizing two‐dimensional ^1^H‐detected heteronuclear one‐bond (HMQC) and multiple‐bond (HMBC) chemical shift correlation experiments together with ^1^H–^1^H COSY and DEPT techniques. These techniques were also valuable in assigning the protons and carbons of those benzanthrone compounds which were previously incompletely reported because of the overlap of proton signals. The molecular structure was elucidated by 2D NMR analysis. The spectral properties (MS, IR and UV) are also presented. Copyright © 2003 John Wiley & Sons, Ltd.

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