Otanthus maritimus

Metzgeria furcata (Bryo.) Otanthus maritimus (Comp.)... 

Interestingly Otanthus maritimus, another plant from the Anthemidae family, yields the thiophene derivatives(17) and (18) (Bohlmann, Zdero and Suwita loc.cit.). Piperoleine A (19,n = 6) and piperoleine B (19, n = 4) occur in black pepper P.nigrum (R. Grewe et al, Ber., 1970, 103, 3752). 

The dienamides (5) [13] and (7) [14] have been isolated from Leucocyclus formosus and the tetradecadienoylpyrrolidine (8) and piperidine (9) have been found in Achillea arten [14] and Otanthus maritimus [15] respectively. The isobutylamides (10-12) have been extracted from the fruits of Piper guineense collected in the western parts of Nigeria [16]. Trichonine (13) and compounds (12) and (16) have the longest dienamide chains isolated so far and they are found in Piper trichostachyon leaves [17]. 

Teresa J P, Feliciano A S, Barrero A F, Medarde M, Tome F 1981 Sesquiterpene hydrocarbons from the roots of Otanthus maritimus. Phytochemistry 20 166-167... 

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