5-Bromo-1-ethylpyridin-2(1H)-one → (S)-3-((S)-1-(4-(1-ethyl-6-oxo-1,6-dihydropyridin-3-yl)phenyl)ethyl)-6-(2-hydroxy-2-methylpropyl)-6-phenyl-1,3-oxazinan-2-one

Participants

Reaction Steps

The title compound was prepared from (S)-6-(2-hydroxy-2-methylpropyl)-6-phenyl-3-((S)-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethyl)-1,3-oxazinan-2-one and 5-bromo-1-ethylpyridin-2(1H)-one following a procedure analogous to that described in Example 6 Step 1. LC-MS Method 2 tR=1.224 min, m/z=475.1; 1H NMR (CDCl3) 1.11 (s, 3H), 1.19 (s, 3H), 1.39 (t, 3H), 1.56 (d, 3H), 2.20 (s, 2H), 2.26 (m, 1H), 2.36-2.57 (m, 2H), 2.87 (m, 1H), 4.03 (m, 2H), 5.69 (m, 1H), 6.62 (d, 1H), 7.00 (d, 2H), 7.17 (d, 2H), 7.28-7.51 (m, 6H), 7.50 (d, 1H). Recrystallization from isopropyl acetate following a procedure analogous to that described for Example 37 in Recrystallization Method B afforded a crystalline solid with mp 167-168° C.

Provenance & Evidence