Two new heteroyohimbine-type oxindole alkaloids, rauniticine-allo-oxindole B and rauniticinic-allo acid B, have been successfully isolated from the stems extract of Malaysian Uncaria longiflora var. pteropoda. The structures of the two new alkaloids were determined by spectroscopic analysis.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6264538 | PMC |
| http://dx.doi.org/10.3390/molecules16086541 | DOI Listing |
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