3-Pyridinemethanol → HCID 54273281, compound

Participants

Reaction Steps

The solution of 2.37 g of N-[4-ethoxycarbonyl-(R*,R*)-2,4-dibenzylbutyryl]-3-aminopropionic acid, 0.61 g of 3-pyridylcarbinol and 1.15 g of dicyclohexylcarbodiimide in 25 ml of methylene chloride is stirred at room temperature for two days. The solid is removed, and the filtrate is diluted with 150 ml of ether and extracted with 0.5N hydrochloric acid. The acidic aqueous layer is separated, basified and extracted with ethyl acetate. The organic layer is washed with saturated sodium chloride, dried over magnesium sulfate, filtered, concentrated and flash chromatographed on silica gel eluting with ethyl acetate:ethanol (9:1) to yield 3-pyridylmethyl N-[4-ethoxycarbonyl-(R*,R*)-2,4-dibenzylbutyryl)-3-aminopropionate as an oil; NMR (CDCl3) δ8.70 (m, 2H), 7.77 (m, 1H), 7.28 (m, 11H), 5.56 (t, 1H, J=7 Hz), 5.12 (s, 2H), 4.03 (q, 2H, J=8 Hz), 1.08 (t, 3H, J=8 Hz).

Provenance & Evidence