抄録
A new cyclic heptapeptide cupolamide A (1) was isolated from two samples of the sponge Theonella cupola collected in Indonesia and Okinawa. It contains two L-Val, one D-Leu, and one D-Ser, and three uncommon amino acid residues, D-homoarginine (Har), trans-4-hydroxy-L-proline (Hyp), and L-2,4-diaminobutanoic acid (Dba). The structure elucidation of 1 was performed by NMR spectroscopic techniques and the stereochemistry was determined by Marfey's method. Cupolamide A (1) was active against P388 murine leukemia cells with an IC50 = 7.5 μg/mL.
本文言語 | English |
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ページ(範囲) | 7765-7767 |
ページ数 | 3 |
ジャーナル | Journal of Organic Chemistry |
巻 | 62 |
号 | 22 |
DOI | |
出版ステータス | Published - 1997 1月 1 |
外部発表 | はい |
ASJC Scopus subject areas
- 有機化学