Quinoid pigments of echinodermata III. Minor pigments of the sea urchin Strongylocentrotus nudus
- 62 Downloads
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.
KeywordsOrganic Chemistry Mutual Transformation Naphthazarin Minor Pigment Spinochrome
Unable to display preview. Download preview PDF.
- 1.N. K. Utkina, A. P. Shchedrin, and O. B. Maksimov, Khim. Prirodn. Soedin., 439 (1976).Google Scholar
- 2.E. A. Kol'tsova, O. V. Maksimov, N. K. Utkina, and A. P. Shchedrin, Dep. VINITI 106–74 .Google Scholar
- 3.H. Singh, R. T. Otaga, R. E. Moore, C. W. Chang, and P. J. Scheuer, Tetrahedron,24, 6053 (1968).Google Scholar
- 4.D. Becher, C. Djerassi, R. E. Moore, H. Singh, and P. J. Scheuer, J. Org. Chem.,31, 3650 (1966).Google Scholar
- 5.R. E. Moore, H. Singh, and P. Scheuer, J. Org. Chem.,31, 3645 (1966). S. Natori, Y. Inouye (née Kumada), and H. Nishikawa, Chem. Pharm. Bull. (Tokyo),15, 380 (1968).Google Scholar
- 6.E. Lederer, Biochim Biophys. Acta,9, 52 (1952); M. Youshida, J. Mar. Biol. Assoc.,38, 455 (1959); J. Smith and R. Thomson, Tetrahedron, 10 (1960).Google Scholar