“…;1 H NMR (500 MHz, CDCl3) δ 3.08 (1 H, m, H1ax), 2.50 (1 H, dd, J ) 3.5, 18.0 Hz, H1eq),1.50 (1 H, m, H6ax), 2.25 (1 H, m, H6eq), 5.45 (1 H, m, H7), 2.58 (1 H, d, J ) 12.0 Hz, H8), 2.25 (1 H, m, H10), 5.43 (1 H, m, H11), 3.08 (1 H, m, H12), 5.45 (1 H, brs, H15), 5.68 (1 H, m, H16), 2.09 (1 H, m, H19ax), 1.96 (1 H, m, H19eq), 2.35 (1 H, dd, J ) 3.0, 12.5 Hz, H21ax), 2.58 (1 H, d, J ) 12.0 Hz, H21eq), 5.34 (1 H, d, J ) 3.0 Hz, H22), 1.89 (3 H, s, H23), 1.23, 1.28 (H24, 2 s, and/or H28), 5.13 (1 H, d, J ) 13.0 Hz, H25eq), 4.50 (1 H, d, J ) 13.0 Hz, H25ax), 1.08 (3 H, d, J ) 7.5 Hz, H26), 1.89 (3 H, s, H27), 1.34 (3 H, s, H29), 3.61 (3 H, s, OMe), 1.82, 1.84, 2.12 (3 × s, 3 × MeCO), benzoyl groups: 8.0 (4 H, m, H2′/H2′′), 7.58 (2 H, m, H4′/H4′′), 7.46 (4 H, m, H3′/H3′′); ESIMS m/z 913 [M + NH 4] + (14.18), 895 [MH] + (100); HRESIMS m/z 895.38601 [MH] + (calcd for C51H58O14, 895.38206).…”