Parsonsianine, a macrocyclic pyrrolizidine alkaloid from the leaves of Parsonsia laevigata(Studies on Parsonsia. III).

Parsonsianine, a macrocyclic pyrrolizidine alkaloid from the leaves of Parsonsia laevigata(Studies on Parsonsia. III). Macrocyclic pyrrolizidine alkaloids from Parsonsia laevigata Parsonine, a Pyrrolizidine Alkaloid from &lt;I&gt;Parsonsia laevigata&lt;/I&gt; Pyrrolizidine Alkaloids from Parsonsia laevigata in Okinawa Island (Studies on Parsonsia. V). Pyrrolizidine Alkaloids from Parsonsia laevigata in Okinawa Island (Studies on Parsonsia. V). 14-DeoxyparsonsianidineN-Oxide: A Pyrrolidine Alkaloid Sequestered by the Giant Danaine Butterfly,Idea leuconoe Pyrrolizidine Alkaloids from Senecio roseus and Senecio helodes Pyrrolizidine Alkaloids from <i>Senecio </i><i>r</i><i>oseus </i>and <i>Senecio </i><i>h</i><i>elodes</i> Ehretinine, a novel pyrrolizidine alkaloid from Ehretia aspera A Novel Pyrrolizidine Alkaloid from Ligularia lankongensis