“…R 1 = H, R 2 = α-OH crinine R 1 = OH, R 2 = α-OMe crinamine R 1 = OH, R 2 = β-OMe haemanthamine R 1 = H, R 2 = OMe, R 3 = OH, R 4 = H montanine R 1 = OMe, R 2 = H, R 3 = OH, R 4 = H coccinine R 1 = H, R 2 = OH, R 3 = OH, R 4 = H pancracine R 1 = H, R 2 = OH, R 3 We have been developing a library of novel chiral biphenol-based monodentate phosphite and phosphoramidite ligands, [25][26][27][28][29][30][31][32][33][34] as well as bidentate diphosphinite ligands (BOP ligands) for a variety of catalytic asymmetric reactions. 31,32,24 These ligands are easy to prepare and fine-tunable through modification of the groups at the 3,3'-positions and the substituents attached to the phosphorous atoms.…”