Melocochines A () and B (), one pair of epimers with an unprecedented skeleton, were isolated from . Their structures and absolute configurations were established by a combination of MS, NMR, and single-crystal X-ray diffraction analyses. Compounds and represent a class of novel alkaloids, characterized by a rare 1-benzo[]azepane ring system within monoterpenoid indole alkaloid categories. Compounds and enhanced lysosomal biogenesis with LysoTracker staining intensities of 139.7% and 119.0%, respectively.
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| http://dx.doi.org/10.1021/acs.orglett.9b03785 | DOI Listing |
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