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Communication | Regular issue | Vol 4, No. 2, 1976, pp.227-230
Published online, 1st January, 1970
DOI: 10.3987/R-1976-02-0227
Bisindoxyl-derived Blue Marine Pigments

Tatsuo Higa and Paul J. Scheuer*

*Department of Chemistry, University of Hawaii at Manoa, 2545 Tha Mall, Honolulu, Hawaii 96822-2275, U.S.A.


From the marine invertebrate Ptychodera flava laysanica we have isolated three blue pigments, the known 6,6’-dibromoindigotin (I) as well as the previously unreported 5,7,5’,7’-tetrabromo-6,6’-dimethoxyindigotin (III) and 5,7,6’-tribromo-6-methoxyindigotin (IV) in addition to a colorless companion, 5,7-dibromo-6-methoxyindole (V).