Synthesis of pyrrolizidine oximes 222 and 236: Novel alkaloids of a dendrobatid poison frog

Synthesis of pyrrolizidine oximes 222 and 236: Novel alkaloids of a dendrobatid poison frog Alkaloids from Dendrobatid Frogs: Structures of Two ω-Hydroxy Congeners of 3-Butyl-5-Propylindolizidine and Occurrence of 2,5-Disubstituted Pyrrolidines and a 2,6-Disubstituted Piperidine Structure of Alkaloid 275A, a Novel 1-Azabicyclo[5.3.0]decane from a Dendrobatid Frog, <i>Dendrobates </i><i>l</i><i>ehmanni</i>:  Synthesis of the Tetrahydrodiastereomers Alkaloid<b> 223A</b>:  The First Trisubstituted Indolizidine from Dendrobatid Frogs A New Class of Alkaloids from a Dendrobatid Poison Frog: A Structure for Alkaloid 251F A new class of indolizidine alkaloids from the poison frog, Dendrobates tricolor. X-ray analysis of 8-hydroxy-8-methyl-6-(2'-methylhexylidene)-1-azabicyclo[4.3.0]nonane A new class of indolizidine alkaloids from the poison frog, Dendrobates tricolor. X-ray analysis of 8-hydroxy-8-methyl-6-(2'-methylhexylidene)-1-azabicyclo[4.3.0]nonane A New Subclass of Alkaloids from a Dendrobatid Poison Frog: A Structure for Deoxypumiliotoxin 251H Divergent Syntheses of Pumiliotoxin‐Type Poison‐Frog Alkaloids Enantioselective total synthesis of (+)- and (-)-pyrrolidine 197B, a new class of alkaloid from the dendrobatid poison frog: assignment of the absolute configuration