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Abstract:
Four novel tetracyclic oxindole alkaloids, namely, speradines B (1), C (2), D (3), and E (4) were isolated from the marine-derived fungus Aspergillus oryzae. The structures of these compounds without the absolute configurations were elucidated through 1D and 2D nuclear magnetic resonance and high-resolution mass spectrometric analyses. Among these compounds, 1 and 4 showed weak cytotoxic effects on the HeLa cell line. © 2014 The Japan Institute of Heterocyclic Chemistry.
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Heterocycles
ISSN: 0385-5414
Year: 2014
Issue: 7
Volume: 89
Page: 1662-1669
1 . 0 7 9
JCR@2014
0 . 8 0 0
JCR@2023
ESI HC Threshold:268
JCR Journal Grade:3
CAS Journal Grade:4
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SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 2
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