Two new pairs of epimeric pyrrolizidine alkaloids, nervosine XVI/XVII and XVIII/XIX were isolated from the whole plant of Liparis nervosa. Their structures were elucidated by extensive spectroscopic analyses including 1D,… Click to show full abstract
Two new pairs of epimeric pyrrolizidine alkaloids, nervosine XVI/XVII and XVIII/XIX were isolated from the whole plant of Liparis nervosa. Their structures were elucidated by extensive spectroscopic analyses including 1D, 2D NMR, and HR-ESI-MS.
               
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