Boc-orn(boc)-OH → N,N'-bis-BOC-Ornithine tert-Butyl Ester

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Reaction Steps

N,N'-bis-BOC-Ornithine tert-Butyl Ester (22) was synthesized from N,N'-bis-BOC-ornithine (12) according to the general procedure : yield, 86%; mp 80°-82° C.; [α]25D+11.3° (c 1.3, CHCl3); 1H NMR δ 5.07 (br d, 1H, J=7.8), 4.63 (m, 1H), 4.16 (t, 1H, J=6.9), 3.14 (t, 2H, J=6.0), 1.82-150 (m, 4H), 1 .45 (s, 9H), 1.43 (s, 18H). Anal. Calcd for C19H36N2O6 : C, 58.7; H, 9.3,; N, 7.2. Found: C, 58.7; H, 9.7; N, 7.2.

Provenance & Evidence