Renieramycins H and I, two novel alkaloids fromt he sponge Haliclona cribricutis Dendy

摘要

The known alkaloid, mimosamycin 1, along with its mono- and di hydroxy derivatives, 4-hydroxy mimosamycin 2 and 1,4-dihydroxymimosamycin 3 and two new dimeric alkaloids: namely renieramycins H and I 4 and 5 have been isolated from the MeOH extract of the bright blue sponge Haliclona cribricutis. These compounds have been purified on reverse phase HPLC and their structures finalized from their respective spectral data.