Crinum oliganthum

Although the alkaloids of the mesembrane type are structurally similar to certain alkaloids of the family Amaryllidaceae, they are generally found in the plants of the family Aizoaceae, but there have been several exceptions to this generalization. For example, amisine (580) has been isolated from Hymenocallis arenicola Northrop (57), and mesembrenol (581) has been isolated from Crinum oliganthum (41). The isolation of 580 and 581 represented the first instances in... 

Few isolations of mesembrine-type alkaloids have been reported. Two examples are the isolation of amisine (379) (from Hymenocallis arenicola) (183) and of mesembrenol (380) (from Crinum oliganthum) (184) from the Amaryllidaceae family. A third example is the isolation of mesembrenone (381), belonging to the mesembrine group, from the aerial parts of Narcissus palladulus (77) growing in Iberia. The structure was elucidated by spectroscopic and chemical methods (Fig. 22). 

Saetetiwn Alkaloids.-A review of these alkaloids has appeared. A new alkaloid has been isolated from Crinum oliganthum. On spectral... 

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