期刊
JOURNAL OF NATURAL PRODUCTS
卷 73, 期 10, 页码 1686-1693出版社
AMER CHEMICAL SOC
DOI: 10.1021/np100443c
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资金
- The University of Auckland
Investigations of four different sponge populations of Latrunculia species collected in New Zealand waters has led to the characterization of a new diastereomer of discorhabdin H, named discorhabdin H(2), confirmation of the structure of discorhabdin K ((+)-7), and presentation of a new diastereomer, discorhabdin K(2) ((-)-8). In each case the structures were established by extensive NMR and MS studies and the absolute configurations interrogated by electronic circular dichroism (ECD). Absolute configurations were assigned to the known metabolites discorhabdins H, D, 2-hydroxy-D, N, and Q by comparison of ECD spectra with those recorded for discorhabdin alkaloids of defined absolute configuration, while the configurations of discorhabdins S. T, and U were assigned by semisynthesis from (+)-(6S,8S)-discorhabdin B.
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