Eudistomidins H–K, new β-carboline alkaloids from the Okinawan marine tunicate Eudistoma glaucus
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Acknowledgments
We thank Mr. Z. Nagahama for his help with tunicate collection and Ms. S. Oka, Center for Instrumental Analysis, Hokkaido University, for measurements of ESIMS. This work was supported by Grant-in-Aid for Science Research from the Ministry of Education, Culture, Sports, Science, and Technology of Japan.
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