Pseudoceratinazole A: a novel bromotyrosine alkaloid from the Australian sponge Pseudoceratina sp.
β Scribed by Yunjiang Feng; Rohan A. Davis; Melissa L. Sykes; Vicky M. Avery; David Camp; Ronald J. Quinn
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- French
- Weight
- 371 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Mass-directed fractionation based on a Trypanosoma brucei brucei active fraction from the Australian sponge Pseudoceratina sp. led to the isolation of a novel bromotyrosine alkaloid, pseudoceratinazole A (1). Compound 1 is the first dimeric bromotyrosine alkaloid containing an imidazole-bridging moiety.
π SIMILAR VOLUMES
Mass-directed isolation of the CH 2 Cl 2 /CH 3 OH extract from a marine sponge of the genus Pseudoceratina resulted in the purification of a new antimalarial bromotyrosine alkaloid, psammaplysin H (1), along with the previously isolated analogs psammaplysins G (2) and F (3). The structure of 1 was e
## Abstract Massβdirected isolation of the largeβscale CH~2~Cl~2~/MeβOH extract from the title sponge affords the new alkaloid psammaplysin H (I) together with the previously isolated analogues psammaplysins G and F.
Zamamistatin was isolated from the Okinawan sponge Pseudoceratina purpurea. It was determined to be a novel bromotyrosine derivative by careful analysis of 2D NMR spectra and comparison of its 1 H NMR spectrum with those of structurally related compounds. The absolute stereostructure of zamamistatin