Twenty-seven pyrrolizidine alkaloids were identified by a detailed phytochemical study and GC/MS analysis on twelve Bulgarian species from genus Senecio. Twenty of them are new for the corresponding species. Other six structures reimain tentatively identified.
Received: 2002-12-11
Revised: 2003-1-14
Published Online: 2014-6-2
Published in Print: 2003-4-1
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