Lythrum anceps

In 1967, Fujita et al. (5,6) isolated three piperidine metacyclophane alkaloids (type B) from Lythrum anceps Makino. The third structural variant of the Lythraceae alkaloids, quinolizidine metacyclophane (type C), was... 

Brief references to the Lythraceae alkaloids have been made in Volumes X, XII, and XIV of this treatise. A short review on the alkaloids from Lythrum anceps was published in Japanese (14). A review on the Lythraceae alkaloids has appeared recently, covering mainly structure elucidation (15). 

Lythramine contains an extra 0,./V-methylene bridge. The alkaloids were isolated from Lythrum anceps Makino by extraction with buffers (72 pH 4.8, 73 pH 6.0, 74 1JV HC1) (5, 6). These alkaloids are listed in Table V. 

Further examination of Lythrum anceps has yielded seven new alkaloids, all exhibiting part quinolizidine skeletons (27).25 That the alkaloids possessed a common skeleton was shown by simple chemical interrelationships. The n.m.r. 

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