期刊
MARINE DRUGS
卷 10, 期 12, 页码 2846-2860出版社
MDPI AG
DOI: 10.3390/md10122846
关键词
zoanthids; Palythoa caribaeorum; Protopalythoa variabilis; sulfonylated ceramides
资金
- National Agency CNPq
- National Agency CAPES
The zoanthids Palythoa caribaeorum and Protopalythoa variabilis are among the most abundant marine species along the Brazilian coast. We now report the isolation and structure elucidation of two unprecedented sulfonylated ceramides, palyosulfonoceramide A (1) and palyosulfonoceramide B (2) from specimens collected off Brazil's northeastern coast. The structures of 1 and 2 were established using a combination of NMR analyses, including: evaluation of H-1, C-13, H-1-H-1 COSY, H-1-C-13 HSQC, H-1-C-13 HMBC, and H-1-N-15 HMBC NMR spectra, high-resolution mass spectrometry and chemical degradation. In addition, we also isolated the corresponding known ceramides, N-((2S,3R,4E,8E)-1, 3-dihydroxyoctadeca-4,8-dien-2-yl)-hexadecanamide (3) and N-((2S,3R,4E)-1,3-dihydroxy octadeca-4-en-2-yl)-hexadecanamide (4), which provided further support for the assignments of 1 and 2.
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