Kopsihainanines A and B, two unusual alkaloids from Kopsia hainanensis |
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| Authors: | Chen Jia Chen Jian-Jun Yao Xiaojun Gao Kun |
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| Affiliation: | State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People's Republic of China. |
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| Abstract: | Kopsihainanine A (1), an unprecedented skeleton with a 6/5/6/6/6 pentacyclic rearranged ring system, together with a new biogenetically related compound, kopsihainanine B (2), were isolated from Kopsia hainanensis. Their structures were elucidated by means of spectroscopic methods. The absolute configuration of 1 was determined by ECD calculation. |
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