Chemical Constituents of Bryophytes by Yoshinori Asakawa Agnieszka Ludwiczuk & Fumihiro Nagashima

Author:Yoshinori Asakawa, Agnieszka Ludwiczuk & Fumihiro Nagashima
Language: eng
Format: epub
Publisher: Springer Vienna, Vienna

Dyker and Bauer achieved the total synthesis of riccionidin A (1934) by the condensation reaction of 2,4,5-trihydroxybenzaldehyde and 4,6-dihydroxydihydrobenzofuran-3-one in acetic acid and hydrogen chloride (199)

4.7 Acetogenins and Lipids

The Greek Fossombronia angulosa is chemically very characteristic, since this species produces the three acetogenins, dictyotene (1936), (Z)-multifidene (1938), and dictyopterene (1939) (492), which were all previously isolated from a brown algal source (383). The volatile components of the French Polynesian Chandonanthus hirtellus were analyzed by GC/MS to confirm the presence of dictyotene (1936) and ectocarpene (1937) (423, 494). In addition, (−)-(R)-dictyotene (1936), (+)-(S)-ectocarpene (1937), and (+)-(3R,5R)-dictyopterene (1939) were isolated from Fossombronia angulosa collected in the islands of Tenerife and Madeira and their structures elucidated from the 1H and 13C NMR spectra, with the use of GC having a modified cyclodextrin as stationary phase (919). The distribution of acetogenins 1936–1939 in the Marchantiophyta is very significant in considering the phylogeny of terrestrial spore-forming plants and their evolutionary processes (see Chap. 9).

Acetogenins found in the Marchantiophyta

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