obtusinin
National Institutes of Health
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The dry comminuted raw material (680 g) was extracted with methanol. The total alkaloids (0.35 g; 0.05% of the weight of the dry…
Obtusinin (1) has been synthesised by the reaction of 6-methoxy-7-(3′-methylbut-2′-enyloxy)-2H-1-benzopyran-2-one (3) with OsO4…
The epigeal part ofHaplophyllum obtusifolium collected in Ustyurt has yielded β-sitosterol, isofraxetin, and a new coumarin…