期刊
JOURNAL OF NATURAL PRODUCTS
卷 65, 期 12, 页码 1945-1948出版社
AMER CHEMICAL SOC
DOI: 10.1021/np0202879
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资金
- NCI NIH HHS [CA 12623, CA 53001] Funding Source: Medline
A Palauan collection of the marine cyanobacterium Lyngbya sp., which had already afforded diverse peptide-based cytotoxins, also yielded a new glycoside macrolide exhibiting slight cytotoxicity. The compound was termed lyngbyaloside B (1) due to its structural analogy to the previously isolated lyngbyaloside (2). Lyngbyaloside B (1) appears to be only the third glycoside macrolide and second brominated compound of its kind from a marine cyanobacterium. Its gross structure was determined by a combination of NMR spectroscopy and mass spectrometric techniques. The relative stereochemistry for the 12 stereocenters is proposed on the basis of proton-proton spin-coupling constants and ROESY data.
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