“…The same procedure from rac‐ 21 (12.9 mg, 0.0357 mmol) gave andrachcinidine ( 6 ; 8.1 mg, 0.0356 mmol, 99 %). [ α ] D =−20.8 ( c 0.625 in CHCl 3 ) {lit 5c. [ α ] D =−20.0 (c 1.7 in CHCl 3 )}; 1 H NMR (300 MHz, CDCl 3 ): δ =3.85–3.75 (m, 1 H), 2.98 (dtd, J =11.3, 6.3, 2.5 Hz, 1 H), 2.75 (tt, J =10.7, 2.5 Hz, 1 H), 2.52 (dd, J AB =16.4, 6.3 Hz, 1 H), 2.43 (dd, J AB =16.4, 5.7 Hz, 1 H), 2.12 (s, 3 H), 1.87–1.77 (m, 1 H), 1.71–1.12 (m, 10 H), 1.10–0.99 (m, 1 H), 0.89 ppm (t, J =7.2 Hz, 3 H); 13 C NMR (75 MHz, CDCl 3 ): δ =207.5, 72.7, 58.4, 53.2, 50.5, 43.1, 40.5, 33.5, 32.5, 30.8, 24.7, 18.8, 14.3 ppm; IR (NaCl): $\tilde \nu $ =3302, 2929, 1712, 1456, 1360, 1109 cm −1 ; HRMS (ESI): m / z calcd for C 13 H 26 NO 2 : 228.1958 [ M +H] + ; found: 228.1958.…”