Two new arylnaphthalide lignans from Justicia flava roots.
Orosunol and 8-demethylorosunol, two new 1-aryl-2,3-naphthalide lignans, have been isolated from Justicia flava root. Structures IV and V respectively have been proposed for them by spectral (UV, IR, PMR, (13)C NMR, and MS) and chemical evidence.
Olaniyi
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Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Ife, Ile-Ife, Nigeria.