Antileukemic activity of ungeremine and related compounds. Preparation of analogs of ungeremine by a practical photochemical reaction

Abstract
A number of alkoxypyrrolophenanthridinium salts and their analogues related to the antileukemic alkaloid ungeremine were prepared by a practical photochemical cyclization. The importance of the quaternary nitrogen atom and of alkoxy groups, the planarity of a molecule, and steric considerations relative to antileukemic activity are discussed.

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