| Abstract: | Summary 1. 3-Acetyl-2,7-dihydroxy-6-methylnaphthazarin, not previously described, has been isolated from the test and needles of the sea urchinStronglyocentrotus nudus.2. The pigments of this sea urchin have been shown to include 2,7-dihydroxynaphthazarin and spinochrome E.3. A number of minor pigments forming naphthazarin derivatives has been isolated. One of them is connected with spinochrome C by mutual transformations.The subject matter of the present paper was given in part at the All-Union Conference on  Biological Resources of the Seas of the Far East (Vladivostok, 1975).Pacific Ocean Institute of Bioorganic Chemistry, Far Eastern Scientific Center of the Academy of Sciences of the USSR, Vladivostok. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 202–207, March–April, 1977. |
