L-Leucine, N-((1,1-dimethylethoxy)carbonyl)- → HCID 66590033, compound

Participants

Reaction Steps

The title compound was prepared by substituting (S)-2-(neopentylamino)pentanoic acid from Step A for N-(tert-butoxycarbonyl)-L-leucine and (3aS,4R,6aR)-2-benzyloctahydrocyclopenta[c]pyrrol-4-amine from Step E of Example 16 for (3aR,4S,6aS)-2-benzyloctahydrocyclopenta[c]pyrrol-4-amine in the procedure described in Example 221: 1H NMR (500 MHz, pyridine-d5) δ ppm 8.00-8.03 (m, 1H), 7.43-7.45 (m, 2H), 7.37 (t, J=7.5 Hz, 2H), 7.28 (t, J=7.3 Hz, 1H), 4.40-4.45 (m, 1H), 3.60 (d, J=13.1 Hz, 1H), 3.45 (d, J=13.1 Hz, 1H), 3.20 (t, J=6.5 Hz, 1H), 2.85 (dd, J=8.8, 2.6 Hz, 1H), 2.52-2.60 (m, 1H), 2.46-2.52 (m, 1H), 2.38-2.46 (m, 2H), 2.31-2.38 (m, 2H), 2.28 (dd, J=8.8, 7.3 Hz, 1H), 2.13 (dq, J=12.1, 6.0 Hz, 1H), 1.79-1.92 (m, 2H), 1.71-1.80 (m, 1H), 1.65-1.73 (m, 1H), 1.57-1.65 (m, 1H), 1.39-1.57 (m, 3H), 0.93 (s, 9H), 0.86 (t, J=7.3 Hz, 3H); MS (ESI−) m/z 384 (M−H)−.

Provenance & Evidence