“…d, 6.6 Hz, CH-3 ′ ), 0.91 (3H, d, 6.6 Hz, CH 3 -4 ′ ), 0.91 (3H, d, 6.6 Hz, CH 3 -5 ′ ), 1.06 (3H, d, 6.6 Hz, CH 3 -6 ′ ) (Figure S78); 13 C-NMR (CDCl 3 -d 1 , 62.5 MHz) δ 55.45 (C-1), 209.99 (C-2), 43.64 (C-3), 47.38 (C-4), 48.46 (C-5), 24.63 (C-6), 33.04 (C-7), 51.79 (C-8), 50.65 (C-9), 44.49 (C-10), 18.14 (C-11), 31.69 (C-12), 37.85 (C-13), 35 25.15 (C-3 ′ ), 22.65 (C-4 ′ ), 22.49 (C-5 ′ ), 20.54 (C-6 ′ ) (Figure S79); HRESIMS m/z 400.2861 [M + H] + (calcd. for C 25 H 37 NO 3 , 400.2846) (Figure S80).…”