Isolation of 4‐Hydroxy‐5‐methoxycanthin‐6‐one from  Picrasma quassioides  and Revision of a Previously Reported Structure | Zendy

Liu Jian | Zendy; Davidson R. Stephen | Zendy; Heijden Robert Van Der | Zendy; Verpoorte Robert | Zendy; Howarth Oliver W. | Zendy

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Isolation of 4‐Hydroxy‐5‐methoxycanthin‐6‐one from Picrasma quassioides and Revision of a Previously Reported Structure

Author(s) -

Liu Jian,

Davidson R. Stephen,

Heijden Robert Van Der,

Verpoorte Robert,

Howarth Oliver W.

Publication year - 1992

Publication title -

liebigs annalen der chemie

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.825

H-Index - 155

eISSN - 1099-0690

pISSN - 0170-2041

DOI - 10.1002/jlac.1992199201162

Subject(s) - simaroubaceae , chemistry , alkaloid , stereochemistry , carbon 13 nmr , two dimensional nuclear magnetic resonance spectroscopy

A new alkaloid, 4‐hydroxy‐5‐methoxycanthin‐6‐one ( 1 ), has been isolated from Picrasma quassioides (Simaroubaceae), and its structure has been determined by high‐field 1 H‐ and 13 C‐NMR, 13 C, 1 H‐HETCOR, 1 H, 1 H‐2D‐COSY, and NOE‐difference spectra. Previous data, interpreted by other workers as being from this compound, is instead tentatively reassigned to another new alkaloid structure, 4‐hydroxy‐3‐methylcanthine‐5,6‐dione ( 2 ).

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