1H NMR (300 MHz, CDCl3) 1.31, 1.32 (12H, 2d, CH3, JHCCH = 6.1); 2.55 (2H, s, NH2 broad); 2.84 (2H, t, CH2NH2, JHCCH = 5.5); 2.99 (2H, m, CH2NHP); 3.31 (1H, m, NH-P); 4.59 (2H, dhep, HCO, JHCCH = 6.2, JPOCH = 7.6)
13C NMR (75.42 MHz, CDCl3) 23.75 (2d, CH3, JCCOP = 4.6); 42.71 (d, CH2CH2NP, JCCNP = 5.7); 43.68 (CH2NP); 70.79 (d, CH, JCOP = 5.7)
31P NMR (121.42 MHz, CDCl3) 7.73