Disidea herbacea

V. cauliformis (Sharma and Burkholder, 1967), while the related compound 39 was isolated from V. lacunosa (Borders et al., 1974). From another sponge, Agelas oroides, the dibromopyrrole derivative 40 was isolated (Forenza et al., 1971), and from Disidea herbacea the pentabromophenol 41 was obtained (Sharma and Vig, 1972). Only two examples of chlorine-... 

Sharma, G.M. and Vig, B., 1972. Studies on the antimicrobial substances of sponges VI. Structures of two antibacterial substances isolated from the marine sponge Disidea herbacea. Tetrahedron Lett., 1972 1715—1718. 

Two brominated phenoxyphenols, active against both gram-neg. and gram-pos. organisms, have been found in Disidea herbacea 166) and structures (32) and (33) were assigned. Both structures were based on the conversion of these substances by catalytic hydrogenolysis into the known 2-hydroxy diphenyl ether, and on analyses of their n. m. r. spectra. 

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