HCID 66669391, compound → HCID 45116030, compound

Participants

Reaction Steps

A solution of methyl 1-[(2S)-3-hydroxy-2-({[(phenylmethyl)oxy]carbonyl}amino)propyl]-L-prolinate (3.50 g, 10.4 mmol) in methanol was added to 5% palladium on carbon (50 wt. % in water) in methanol and treated with hydrogen at 40 psi for 1 h. The mixture was filtered and the filtrate was brought to reflux briefly and then cooled and concentrated in vacuo to afford (3S,8aS)-3-(hydroxymethyl)hexahydropyrrolo[1,2-a]pyrazin-1(2H)-one as a colorless solid (1.50 g, 8.83 mmol, 85% yield). 1H NMR (400 MHz, CDCl3): 7.28-7.22 (m, 1H), 3.83-3.75 (m, 1H), 3.69 (dd, 1H), 3.56 (dd, 1H), 3.31 (t, 1H), 3.08 (dd, 1H), 2.92 (dt, 1H), 2.76-2.70 (m, 1H), 2.66 (dd, 1H), 2.28-2.16 (m, 1H), 2.02-1.73 (m, 3H); MS (EI) for C8H14N2O2: 171 (MH+).

Provenance & Evidence