THE ALKALOID OF BERBERIS UMBELLATA, WALL. PART III.

Umbellatine C₂₁H₂₁O₈N, the common alkaloid of the Himalyan species of Berberis yields on potassium permanganate oxidation hemipinic acid and on potassium hy­droxide fusion, protocatechnic acid. These results show that the two methoxy groups are in adjacent positions in a benzene nucleus in umbellatine and that other groups, like the methylenedioxy and hydroxyl, are not present in the benzene ring con­taining the two methoxyl groups.