“…Spectroscopic data matched those previously reported in the literature. 40 1 H NMR (300 MHz, CDCl 3 ): δ 2.72−2.62 (m, 4H), 2.42 (t, J = 7.3 Hz, 2H), 2.17 (s, 3H), 1.58 (dt, J = 14.7, 7.4 Hz, 2H), 0.90 (t, J = 7.4 Hz, 3H). 13 C NMR (75 MHz, CDCl 3 ): δ 209.7, 207.5, 44.8, 37.0, 36.2, 30.1, 17.4, 13.8.…”