Arcyriarubin from Arcyria denudata

Steglich et al. also studied the constituents of the fruit bodies of Lycogala epidendrum [17] and isolated not only lycogarubins A-C (31-33) but also lycogalic acid A (35) [18], staurosporinone (36) [19], and arcyriarubin A (6) and arcyriaflavin A (7) previously isolated from Arcyria denudata. 

Fruit bodies of wild myxomycetes often have bright colors. In 1980 Steglich et al. isolated red and yellow pigments from methanol extracts of 2 g of the red fruit bodies of Arcyria denudata [7], Structure of these pigments were elucidated by spectral data as a series of bisindole maleimides, and they were named arcyriarubin B (1), C (2), arcyriaflavin B (3), C (4), and arcyrioxepin A (5). 1, 2, and 5 were red... 

The arcyriarubins-B (502) and -C (503) are the main red pigments of Arcyria denudata. Arcyriarubin-A (501) is present in this organism in only minor amounts. Chromatography has shown that arcyriarubin-C (503) is also the major red pigment of Arcyria ferruginea. The structure of the arcyriarubin pigments was deduced from spectroscopic data, especially the and C-n.m.r. spectra which are summarised concisely in Table 49. 

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See also in sourсe #XX -- [ , , ]

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