Reaction Steps
Prepared using General Procedure 5: To a stirring solution of (R)-5-(3-(5-amino-5,6,7,8-tetrahydronaphthalen-1-yl)-1,2,4-oxadiazol-5-yl)-2-isopropoxybenzonitrile HCl 3 (50 mg, 0.12 mmol) in dioxane (3 mL) were added sulfamide (58 mg, 0.61 mmol) and DIEA (47.2 μL, 0.37 mmol) and the mixture was heated to 110° C. for 14 h. The solvent was evaporated and the residue was purified by preparative HPLC to provide 22.8 mg (42%) of (R)-N-(5-(5-(3-cyano-4-isopropoxyphenyl)-1,2,4-oxadiazol-3-yl)-1,2,3,4-tetrahydronaphthalen-1-yl)sulfamide 26. LCMS-ESI (m/z) calculated for C22H23N5O4S: 453.5; found 454.1 [M+H]+, tR=3.47 min. 1H NMR (400 MHz, CDCl3) δ 8.41 (d, J=2.2 Hz, 1H), 8.33 (dd, J=8.9, 2.2 Hz, 1H), 7.97 (dd, J=7.7, 1.2 Hz, 1H), 7.72 (d, J=7.7 Hz, 1H), 7.38 (t, J=7.8 Hz, 1H), 7.12 (d, J=9.0 Hz, 1H), 4.78 (ddd, J=13.4, 11.7, 5.7 Hz, 2H), 4.59 (d, J=19.8 Hz, 2H), 4.55 (d, J=8.2 Hz, 1H), 3.19 (dt, J=18.0, 5.6 Hz, 1H), 3.02 (dt, J=18.2, 7.2 Hz, 1H), 2.23-2.03 (m, 2H), 1.92 (dt, J=12.4, 6.3 Hz, 2H), 1.48 (d, J=6.1 Hz, 6H).
