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Yamashita H, Katoh M, Kokubun A, Uchimura A, Mikami S, Takeuchi A, Kaneda K, Suzuki Y, Mizukami M, Goto M, Lee KH, Wada K. Four new C 19-diterpenoid alkaloids from Delphinium elatum. Phytochem Lett 2018; 24:6-9. [PMID: 29375725 PMCID: PMC5785106 DOI: 10.1016/j.phytol.2017.12.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Diterpenoid alkaloids with remarkable chemical properties and biological activities are frequently found in plants of the genera Aconitum, Delphinium, and Garrya. Accordingly, several C19-diterpenoid alkaloid components from Delphinium elatum cv. Pacific Giant, as well as their derivatives, exhibited cytotoxic activity against lung, prostate, nasopharyngeal, and vincristine-resistant nasopharyngeal cancer cell lines. Four new C19-diterpenoid alkaloids, elapacigine (1), N-deethyl-N-formylpaciline (2), N-deethyl-N-formylpacinine (3), and N-formyl-4,19-secoyunnadelphinine (4), together with 11 known C19-diterpenoid alkaloids were isolated in a phytochemical investigation on the seeds of D. elatum cv. Pacific Giant. Their structures were elucidated by extensive spectroscopic methods including NMR (1D and 2D), IR, and MS (HRMS). Three of the new C19-diterpenoid alkaloids (2-4) and five of the known diterpenoid alkaloids were evaluated for cytotoxic activity against five human tumor cell lines.
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Affiliation(s)
- Hiroshi Yamashita
- Hokkaido Pharmaceutical University, School of Pharmacy, 4-1, 7-jo 15-choume, Maeda, Teine-ku, Sapporo 006-8590, Japan
| | - Megumi Katoh
- Hokkaido Pharmaceutical University, School of Pharmacy, 4-1, 7-jo 15-choume, Maeda, Teine-ku, Sapporo 006-8590, Japan
| | - Akane Kokubun
- Hokkaido Pharmaceutical University, School of Pharmacy, 4-1, 7-jo 15-choume, Maeda, Teine-ku, Sapporo 006-8590, Japan
| | - Ayano Uchimura
- Hokkaido Pharmaceutical University, School of Pharmacy, 4-1, 7-jo 15-choume, Maeda, Teine-ku, Sapporo 006-8590, Japan
| | - Sakina Mikami
- Hokkaido Pharmaceutical University, School of Pharmacy, 4-1, 7-jo 15-choume, Maeda, Teine-ku, Sapporo 006-8590, Japan
| | - Ayana Takeuchi
- Hokkaido Pharmaceutical University, School of Pharmacy, 4-1, 7-jo 15-choume, Maeda, Teine-ku, Sapporo 006-8590, Japan
| | - Kyousuke Kaneda
- Hokkaido Pharmaceutical University, School of Pharmacy, 4-1, 7-jo 15-choume, Maeda, Teine-ku, Sapporo 006-8590, Japan
| | - Yuji Suzuki
- Hokkaido Pharmaceutical University, School of Pharmacy, 4-1, 7-jo 15-choume, Maeda, Teine-ku, Sapporo 006-8590, Japan
| | - Megumi Mizukami
- Hokkaido Pharmaceutical University, School of Pharmacy, 4-1, 7-jo 15-choume, Maeda, Teine-ku, Sapporo 006-8590, Japan
| | - Masuo Goto
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7568, USA
| | - Kuo-Hsiung Lee
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599-7568, USA
- Chinese Medicine Research and Development Center, China Medical University and Hospital, Taichung, Taiwan
| | - Koji Wada
- Hokkaido Pharmaceutical University, School of Pharmacy, 4-1, 7-jo 15-choume, Maeda, Teine-ku, Sapporo 006-8590, Japan
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