step 2—A sealed tube containing 104 (141 mg, 0.29 mmol), 2-benzyloxy-pyridin-3-yl boronic acid (100 mg, 0.44 mmol), Na2CO3 (92 mg, 0.87 mmol) and Pd(PPh3)4 (33 mg, 0.029 mmol) in a mixture of MeOH (1.5 mL) and DCM (0.5 mL) was irradiated in a microwave synthesizer at 100° C. for 30 min. The reaction mixture was diluted with DCM, filtered through a pad of CELITE and the filtrate was concentrated. The crude residue was purified on a preparative SiO2 TLC plate developed with 40% EtOAc/hexanes to afford 128 mg (75%) of (S)-1-[2-(2-benzyloxy-pyridin-3-yl)-4-tert-butyl-5-methoxy-benzyl]-5-(tert-butyl-dimethyl-silanyloxymethyl)-pyrrolidin-2-one (106).
