Abstract
Chemical investigation of the hithertho undescribed sponge Dragmacidon sp. from the Andaman Sea afforded two new beta-carboline alkaloids, which were named dragmacidonamines A (1) and B (2). The structures of the new compounds were unambiguously established on the basis of NMR spectroscopic (1H, 13C, COSY, 1H detected direct, and long-range 13C-1H correlations) and mass spectrometric (EI and ESIMS) data. The 3-carboxylic-beta-carboline moiety and the thiomethylated imidazolinium unit as found in dragmacidonamines are very rarely encountered in nature.
Original language | English |
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Pages (from-to) | 2113-2116 |
Number of pages | 4 |
Journal | Journal of Natural Products |
Volume | 67 |
Issue number | 12 |
DOIs | |
Publication status | Published - Dec 2004 |
Keywords
- alkaloids
- carbolines
- nuclear magnetic resonance
- oceans and seas
- porifera