Molecules 2013, 18(2), 1819-1825; doi:10.3390/molecules18021819
Article

Two New Koumine-Type Indole Alkaloids from Gelsemium elegans Benth.

Received: 27 December 2012; in revised form: 24 January 2013 / Accepted: 25 January 2013 / Published: 31 January 2013
(This article belongs to the Section Natural Products)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Two new indole alkaloids, 21-oxokoumine (1) and furanokoumine (2), were isolated from the roots of Gelsemium elegans Benth together with three known compounds. The structures of the two novel compounds were elucidated by spectroscopic methods, including NMR, HR-ESI-MS, UV, IR, CD and molecular modeling. Compound 1 is the first instance of a koumine-type alkaloid with a carbonyl at the C-21 position, while compound 2 possesses a tetrahydrofuran ring located on C-20 and C-21.
Keywords: indole alkaloids; Gelsemium elegans Benth.; 21-oxokoumine; furanokoumine
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MDPI and ACS Style

Sun, M.; Hou, X.; Gao, H.; Guo, J.; Xiao, K. Two New Koumine-Type Indole Alkaloids from Gelsemium elegans Benth.. Molecules 2013, 18, 1819-1825.

AMA Style

Sun M, Hou X, Gao H, Guo J, Xiao K. Two New Koumine-Type Indole Alkaloids from Gelsemium elegans Benth.. Molecules. 2013; 18(2):1819-1825.

Chicago/Turabian Style

Sun, Mingxue; Hou, Xiaoli; Gao, Huanhuan; Guo, Junsheng; Xiao, Kai. 2013. "Two New Koumine-Type Indole Alkaloids from Gelsemium elegans Benth.." Molecules 18, no. 2: 1819-1825.

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