Isolation and identification of amides from Piper callosum. Synthesis of pipercallosine and pipercallosidine

Isolation and identification of amides from Piper callosum. Synthesis of pipercallosine and pipercallosidine New Amide Alkaloids from the Roots of Piper nigrum Novel amide alkaloids from the roots of Piper guineense Constituents of Tropical Medicinal Plants, IXX¹GC/MS-Investigations of the Constituents of<i>Piper amalago</i>- 30 New Amides of the Piperine-Type Two new alkaloids, pipercyclobutanamides A and B, from Piper nigrum An amide from fruits of Piper nigrum Alkaloids of Piper longum Linn—I Two amides from Piper amalago Amides of Ottonia corcovadensis New Amide Alkaloids from the Roots of <i>Piper </i><i>n</i><i>igrum</i>