Structural elucidation and NMR assignments of a new pyrrolizidine alkaloid from Crotalaria vitellina Ker Gawl

Structural elucidation and NMR assignments of a new pyrrolizidine alkaloid from Crotalaria vitellina Ker Gawl Two new pyrrolizidine alkaloids from Crotalaria albida Structural elucidation of a novel pyrrolizidine alkaloid isolated from Crotalaria retusa L. Pyrrolizidine alkaloids from Crotalaria aegyptiaca A novel alkaloid isolated from Crotalaria paulina and identified by NMR and DFT calculations Novel pyrrolizidine alkaloid from Crotalaria nana Exploring pyrrolizidine alkaloids in Crotalaria paulina: Isolation and identification of a promising compound GenusCrotalaria XIII. Crobarbatine, a new pyrrolizidine alkaloid ofC. barbata R. GenusCrotalaria XXI. Isocromadurine, a novel pyrrolizidine alkaloid ofc. madurensis R. Wight LC/MS study of the diversity and distribution of pyrrolizidine alkaloids in Crotalaria species growing in Colombia