“…The 1 H NMR spectrum of 1 (Table ) showed trans olefinic protons at δ H 6.31 (1H, d, J = 15.6 Hz) and δ H 7.60 (1H, d, J = 15.6 Hz), ABX‐type coupled aromatic protons at δ H 6.79 (1H, d, J = 7.8 Hz), δ H 6.97 (1H, dd, J = 1.8, 7.8 Hz), and δ H 7.07 (1H, d, J = 1.8 Hz), three hemiacetal protons at δ H 4.75 (1H, d, J = 7.8 Hz), δ H 4.80 (1H, dd, J = 2.4, 9.0 Hz), and δ H 5.18 (1H, d, J = 7.8 Hz), three methylene protons at δ H 3.88 (1H, m), δ H 3.52 (1H, m), δ H 1.57 (2H, m), and δ H 1.38 (2H, m), and one methyl proton at δ H 0.93 (3H, t, J = 7.2 Hz). They suggested the presence of a caffeoyl moiety, a hexose sugar residue, and a butoxy group in the structure. This was confirmed by the successively lose two units of 162 Da and one unit of 74 Da in HRESI‐MS n .…”