Monoterpenoid indole alkaloids from the stems of Kopsia officinalis.
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DOI: 10.1016/j.fitote.2020.104547
Abstract: Five new indole alkaloids, kopsiofficines H-L (1-5), along with fourteen known alkaloids (6-19) were isolated from the stems of Kopsia officinalis. Their structures were elucidated by extensive NMR, mass spectroscopic analyses and comparison to the… read more here.
Keywords: stems kopsia; indole alkaloids; kopsia officinalis; alkaloids stems ... See more keywords
New N-oxide alkaloids from the stems of Sinomenium acutum.
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DOI: 10.2139/ssrn.4281979
Abstract: Six new alkaloids (1-6) and six known alkaloids (7-12) were obtained from the stems of Sinomenium acutum. Among them, compounds 1-3 and 6 were four N-oxide alkaloids. The structures and absolute configurations of these new… read more here.
Keywords: alkaloids stems; stems sinomenium; oxide alkaloids; new oxide ... See more keywords