The structure and synthesis of proguibourtinidins from Cassia abbreviata Malan, Elfranco ; Swinny, Ewald ; Ferreira, Daneel ; Steynberg, Petrus Abstract Publication: Phytochemistry Pub Date: March 1996 DOI: 10.1016/0031-9422(95)00656-7 Bibcode: 1996PChem..41.1209M