Four new cyclic octapeptides, hymenamides G, H, J, and K, (1 -4), have been isolated from the Okinawan marine sponge Hymeniacidon sp. and the structures elucidated on the basis of 2D NMR data and Edman degradation experiments of their partial hydrolysis products . In our continuing studies on bioac
Hymenamides a and b, new proline-rich cyclic heptapeptides from the okinawan marine sponge hymeniacidon sp.
β Scribed by Jun'ichi Kobayashi; Masashi Tsuda; Takemichi Nakamura; Yuzuru Mikami; Hideyuki Shigemori
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- French
- Weight
- 841 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0040-4020
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β¦ Synopsis
New cyclic heptapeptides, hymenamides
A and B, with a prolylproline segment have been isolated from the Okinawan marine sponge Hymeniacidon sp. and the structures elucidated on the basis of 2D NMR and
π SIMILAR VOLUMES
The isolation and structure determination of an unusual cyclic heptapeptide, wainunuamide, from a Fijian marine sponge, Stylotella aurantium, is reported. The peptide contains three proline residues and a histidine residue, which is rare in cyclic peptides and has only previously been reported in a
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Keramamine-A and -B, two new B-carboline alkaloids with a 13 membered ring have been isolated from the Okinawan marine sponge Pellina sp. as antimicrobial substances and the structures of keramamine-A and -B have been determined by X-ray analysis and by spectral and chemical means, respectively. As