Piperaceae alkaloids: Part II1 structure and synthesis of cyclostachine A, A novel alkaloid fromPiper trichostachyon C. DC

Piperaceae alkaloids: Part II1 structure and synthesis of cyclostachine A, A novel alkaloid fromPiper trichostachyon C. DC Piperaceae alkaloids: Part IV. Structure and Synthesis of Cyclostachine A, Cyclostachine B and Cyclopiperstachine Piperaceae Alkaloids: Part I. Structure of piperstachine; ¹³C‐ and ¹H‐NMR. Studies Two new alkaloids, pipercyclobutanamides A and B, from Piper nigrum Alkaloids from <i>Piper sarmentosum</i> and <i>Piper nigrum</i> A piperidine alkaloid from excoecharia agallocha X-Ray Crystal Structure of a Naturally Occurring trans-2-cis-4-Isomer of Wisanine, a Piperine-Type Alkaloid From Piper guineense Catharanthus alkaloids—XXXIX X-Ray Crystal Structure of a Naturally Occurring trans-2-cis-4-Isomer of Wisanine, a Piperine-Type Alkaloid From Piper guineense Nigramides A−S, Dimeric Amide Alkaloids from the Roots of <i>Piper </i><i>n</i><i>igrum</i>