(+)-Sparteine is a quinolizidine alkaloid that has been found in Fabaceae.1 It has been used as a chiral ligand in stereoselective lithiation reactions.2,3
1.van Wyk, B.-E., and Verdoorn, G.H.Optical rotation of quinolizidine alkaloids: An important variable in chemosystematic studies of FabaceaePl. Syst. Evol.198(3/4)267-274(1995) 2.McSweeney, C.M., Foley, V.M., and McGlacken, G.P.The asymmetric alkylation of dimethylhydrazones; intermolecular chirality transfer using sparteine as chiral ligandChem. Commun. (Camb.)50(94)14817-14819(2014) 3.Lin, W., Zhang, K.-F., and Baudoin, O.Regiodivergent enantioselective C-H functionalization of Boc-1,3-oxazinanes and application to the synthesis of β2 and β3-amino acidsNat. Catal.2(10)882-888(2019)