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Siphonaria atra

Snails of the genus Siphonaria live as lung-breathing mollusks in tidal zones of the oceans. They contain secondary metabolites biosynthetically formed by condensation of polypropionate units e.g.,D.A from S. den-ticulata, C23H40O5, Mr 396.57, oil, [aJu -30.7° and siphonarin A from S. zelandica and S. atra, C28H42O8, Mr 506.64, cryst., mp. 164-166 °C, [a]o +21.7°. [Pg.178]

See also in sourсe #XX -- [ Pg.25 ]

See also in sourсe #XX -- [ Pg.17 , Pg.25 ]

See also in sourсe #XX -- [ Pg.17 , Pg.25 ]

See also in sourсe #XX -- [ Pg.277 ]

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Siphonaria