The Demethylation of Methoxyacridones

1952 ◽  
Vol 5 (1) ◽  
pp. 206
Author(s):  
GK Hughes ◽  
NK Matheson ◽  
AT Norman ◽  
E Ritchie
Keyword(s):  
Acridone Alkaloids

4-Methoxy-10-methylacridone demethylates more readily than the 1-, 2-, or 3-isomers but not so readily as the acridone alkaloids. 4-Hydroxy-10-methylacridone resembles the nor-alkaloids but its isomers have distinctly different properties.

ChemInform Abstract: Quinoline, Quinazoline, and Acridone Alkaloids

ChemInform ◽  
2010 ◽  
Vol 31 (18) ◽  
pp. no-no
Author(s):  
Joseph P. Michael
Keyword(s):  
Acridone Alkaloids

Acridone alkaloids of callus tissue ofRuta graveolens

1984 ◽  
Vol 20 (6) ◽  
pp. 716-719 ◽  
Author(s):  
I. N. Kuzovkina ◽  
L. D. Kislov ◽  
M. N. Zhivopistseva ◽  
Zs. Rozsa ◽  
K. Szendrei
Keyword(s):  
Callus Tissue ◽  
Acridone Alkaloids

New Acridone Alkaloids from Citrus Plants

Heterocycles ◽  
1992 ◽  
Vol 34 (11) ◽  
pp. 2123 ◽  
Author(s):  
Motoharu Ju-ichi ◽  
Yuko Takemura ◽  
Hiromi Uchida ◽  
Mitsuo Omura ◽  
Chihiro Ito ◽  
...  
Keyword(s):  
Acridone Alkaloids

New Acridone Alkaloids from Citrus yuko

Heterocycles ◽  
1991 ◽  
Vol 32 (9) ◽  
pp. 1781 ◽  
Author(s):  
Motoharu Ju-ichi ◽  
Yuko Takemura ◽  
Chihiro Ito ◽  
Hiroshi Furukawa
Keyword(s):  
Acridone Alkaloids

Two New Acridone Alkaloids from Genus Citrus Plants

Heterocycles ◽  
1987 ◽  
Vol 26 (7) ◽  
pp. 1873 ◽  
Author(s):  
Motoharu Ju-ichi ◽  
Mami Inoue ◽  
Chihiro Ito ◽  
Miyuki Matsuoka ◽  
Hiroshi Furukawa ◽  
...  
Keyword(s):  
Acridone Alkaloids

Acridone Alkaloids V. New Fulo- and Pyranoacridone Alkaloids from Glycosmis citrifolia (Willd.) Lindl

Heterocycles ◽  
1982 ◽  
Vol 19 (7) ◽  
pp. 1227 ◽  
Author(s):  
Hiroshi Furukawa ◽  
Tian-Shung Wu ◽  
Kuo-Shih Hsu
Keyword(s):  
Acridone Alkaloids

scholarly journals Application of Lanthanide Shift Reagent to the 1H-NMR Assignments of Acridone Alkaloids

Molecules ◽  
2020 ◽  
Vol 25 (22) ◽  
pp. 5383
Author(s):  
Sio-Hong Lam ◽  
Hsin-Yi Hung ◽  
Ping-Chung Kuo ◽  
Daih-Huang Kuo ◽  
Fu-An Chen ◽  
...  
Keyword(s):  
Least Squares ◽  
Nmr Assignments ◽  
Least Squares Method ◽  
Chemical Shifts ◽  
Shift Reagent ◽  
Spectral Studies ◽  
Lanthanide Shift Reagent ◽  
Planar Structures ◽  
Acridone Alkaloids ◽  
The Eu

This study investigates the application of the paramagnetic shift reagent tris(dipivaloylmethanato)-europium(III) in NMR spectral studies of permethoxyacridone alkaloids (1–3) and pyranoacridone alkaloids (4–6). The induced chemical shifts (∆δ) of all protons were observed for the same molecule, and were compared to deduce the positions resulting from the distance nearby the Eu(dpm)3. Assignment of the H-2, H-4 and H-8 of polysubstituted acridones could be distinguished based on the least-squares method of lanthanide-induced shifts plotted against the mole ratios of Eu(dpm)3 to the substrate. The developed method is not only potentially useful for determining the planar structures of polysubstituted compounds, such as acridones, anthraquinones, xanthones, flavonoids, and phenanthrenes, but also applicable for their stereochemistry.

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