Isobutylamides from Piper ridleyi

Isobutylamides from Piper ridleyi Amides from Piper brachystachyum and Piper retrofractum A new alkamide from Piper sylvaticum Isolation and identification of amides from Piper callosum. Synthesis of pipercallosine and pipercallosidine New Amide Alkaloids from the Roots of Piper nigrum Chromatographic isolation of insecticidal amides from Piper guineense root An amide from fruits of Piper nigrum Two amides from Piper amalago Constituents of Tropical Medicinal Plants, IXX¹GC/MS-Investigations of the Constituents of<i>Piper amalago</i>- 30 New Amides of the Piperine-Type Isobutylamides and a New Methylbutylamide from<i>Piper sarmentosum</i>