engleski

4a-Methyl Sterols from the Sponges Haliclona cinerea and Haliclona flavescens

Relatively rare 4-methyl sterols were isolated from Haliclona cinerea (two samples) and Haliclona flavescens. Thirteen sterols were identified for the first time in sponges, five of these for the first time in marine organisms and two (1b and 2h) for the first time in nature. The possible position of these compounds in food webs is discussed.

Black Sea sponges; Porifera; Haliclona cinerea; Haliclona flavescens; 4-methyl sterols; food webs

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