An N-methyl aristolactam and an oxygenated cyclohexane derivative from Piper ribesioides

An N-methyl aristolactam and an oxygenated cyclohexane derivative from Piper ribesioides An aristolactam from Piper acutisleginum and revision of the structures of piperolactam B and D Neolignans and alkaloids from Piper argyrophylum Neolignans, cyclohexanes and alkaloids from <i>Piper wightii</i> Aristolactams and 4,5-dioxoaporphines from Piper longum Two new alkaloids, pipercyclobutanamides A and B, from Piper nigrum An amide from fruits of Piper nigrum A New Amide, Piperchabamide F, and Two New Phenylpropanoid Glycosides, Piperchabaosides A and B, from the Fruit of Piper chaba Piperidone derivative from <i>Dalbergia sympathetica</i> Isolation and identification of amides from Piper callosum. Synthesis of pipercallosine and pipercallosidine