Pakrashi, S.C.; Achari, B.; Dutta, P.K.; Chakrabarti, A.K.; Giri, C.; Saha, S.; Basa, S.C.
(Tetrahedron, 50(41), 1994: 12009-12014)
New bromotyrosine derived secondary metabolites have been isolated from the marine sponge Psammaplysilla purpurea, and the structures assigned on the basis of spectroscopic analyses of their acetates 1a' and 1b'.