Saponin and sapogenol. XI. Chemical correlation of spergulagenin A, a new migrated hopane-type sapogenol,with hydroxyhopane.

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Abstract

The chemical correlation of spergulagenin A (1), which is a new migrated hopane-type sapogenol elucidated previously from the root of Mollugo spergula L., with hydroxyhopane (2) has been accomplished through the conversion of both to the common derivative 4a (=7a). The Meerwein-Ponndorf type reduction of the methylcarbonyl moiety in spergulagenin A (1), which occurs on prolonged treatment with ethanolic alkali, has been described.

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