Abstract
The two new marine sponge (Phakellia sp., western Pacific Ocean) constituents, phakellistatin 10 [1] and 11 [2], were found to be cyclic octapeptides that significantly inhibited growth of the murine P-388 lymphocytic leukemia (ED50values of 2.1 and 0.20 μg/ ml, respectively) and human cancer cell lines. The structures were established based on results of extensive tandem ms/ms and high-field (500-MHz) 2D 1H- and 13C-nmr analyses. All of the amino acid units (except Trp, not determined) were found to correspond to the (S)-configuration.
Original language | English (US) |
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Pages (from-to) | 961-965 |
Number of pages | 5 |
Journal | Journal of Natural Products |
Volume | 58 |
Issue number | 6 |
DOIs | |
State | Published - Jun 1995 |
ASJC Scopus subject areas
- Analytical Chemistry
- Molecular Medicine
- Pharmacology
- Pharmaceutical Science
- Drug Discovery
- Complementary and alternative medicine
- Organic Chemistry