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Two new monoterpenoid indole alkaloids, vincamajorines A (1) and B (2), were isolated from Vinca major. Their structures were elucidated by means of 1D and 2D NMR, and HREIMS spectroscopic data. The relative and absolute configurations were deduced by comparing the experimental 13 C NMR, ECD spectra, and OR data with those theoretically calculated. Vincamajorine A (1) represents a new C ...
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