Journal
TETRAHEDRON LETTERS
Volume 55, Issue 39, Pages 5369-5372Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2014.07.101
Keywords
Zoanthus kuroshio; Alkaloids; Marine natural products; Kuroshine
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Funding
- National Science Council, Republic of China (MOST) [103-2628-B-037-001-MY3]
- Kaohsiung Medical University research foundation [KMU-Q102002]
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A chemical investigation of Zoanthus kuroshio has yielded two new alkaloids, kuroshines A (1) and B (2). The compounds possess a densely functionalized ring system on the basis of the zoanthamine frames. The structures of 1 and 2 were elucidated through interpretation of spectroscopic methods, especially 2D NMR techniques (COSY, HMQC, HMBC, and ROESY). The absolute stereochemistry of 1 was further confirmed by an X-ray single crystallographic analysis using a mirror Cu-K alpha radiation. (C) 2014 Elsevier Ltd. All rights reserved.
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