Absolute Structures of Stemona-Lactam S and Tuberostemospiroline, Alkaloids from <i>Stemona tuberosa</i>

Absolute Structures of Stemona-Lactam S and Tuberostemospiroline, Alkaloids from &lt;i&gt;Stemona tuberosa&lt;/i&gt; Structures of stemona-amine B and stemona-lactams M–R Stemona-amines C–E, new alkaloids from Stemona tuberosa Chemical Studies on New Stemona Alkaloids, IV. Studies on New Alkaloids from Stemona tuberosa Alkaloids from the Roots of Stemona tuberosa Stemona-amines F and G, new alkaloids from Stemona tuberosa Isolation and stereochemistry of two new alkaloids from Stemona tuberosa Alkaloids from the Roots of <i>Stemona tuberosa</i> Two new stemona alkaloids fromStemona tuberosaLour. Two minor alkaloids from roots of Stemona tuberosa