New alkaloids with unusual spermidine moieties from the seeds of Orychophragmus violaceus and their cytoprotective properties

New alkaloids with unusual spermidine moieties from the seeds of Orychophragmus violaceus and their cytoprotective properties Orychophragines A–C, Three Biologically Active Alkaloids from Orychophragmus violaceus Pentacyclic spermidine alkaloids with radioprotective and anti-inflammatory activities from Orychophragmus violaceus Orychophragine D:A new 2-piperazinone fused 5-azacytosine type alkaloid with radioprotective activity from the seeds of Orychophragmus violaceus Correction: Pentacyclic spermidine alkaloids with radioprotective and anti-inflammatory activities from Orychophragmus violaceus Skeleton Synthesis of a Plant-Derived Radioprotective Alkaloid Born to Produce a Novel Fused Heterocycle Chemical constituents from the aerial parts of Orychophragmus violaceus Macrocyclic Spermidine Alkaloids from Androya decaryi L. Perrier The untapped potential of spermidine alkaloids: Sources, structures, bioactivities and syntheses Chemical Constituents and Their Activities From the Seeds of Ormosia hosiei