Macroline–Sarpagine Bisindole Alkaloids with Antiproliferative Activity from Alstonia penangiana
A methanol extract of the stem bark of the Malayan Alstonia penangiana provided seven new bisindole alkaloids, comprising six macroline-sarpagine alkaloids (angustilongines E-K, 1-6) and one macroline-pleiocarpamine bisindole alkaloid (angustilongine L, 7). Analysis of the spectroscopic data (NMR an...
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American Chemical Society
2019
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