Table 1: NMR data (400 MHz, CD3OD) of (7′′R)-7′′-ethoxyoleuropein (1) and (7′′S)-7′′-ethoxyoleuropein (2).

Position12
, mult. (J in Hz) , mult. , mult. (J in Hz) , mult.

15.92, bs95.0, CH5.92, bs95.1, CH
37.51, s155.2, CH7.52, s155.2, CH
4109.3, qC109.4, qC
53.99, dd (4.5, 9.0)31.8, CH3.94–4.00, m31.7, CH
6a2.72, dd (4.5, 14.2)41.1, CH22.72, dd (4.4, 14.4)41.1, CH2
6b2.47, dd (9.0, 14.2)2.47, dd (9.1, 14.4)
7173.1, qC173.0, qC
86.08, bq (6.9)124.9, CH6.09, bq (6.6)124.9, CH
9130.5, qC130.5, qC
101.69 bd (6.9)13.6, CH31.69, bd (6.6)13.6, CH
11168.7, qC168.7, qC
OCH33.71, s51.9, CH33.71, s51.9, CH3
1′4.80, d (7.8)100.8, CH4.80, d (7.9)100.8, CH
2′3.34–3.42, m74.8, CH3.34–3.44, m74.8, CH
3′3.34–3.42, m77.9, CH3.34–3.44, m77.9, CH
4′3.34–3.42, m71.5, CH3.34–3.44, m71.5, CH
5′3.34–3.42, m78.4, CH3.34–3.44, m78.4, CH
6′a3.89, bd (11.9)62.7, CH23.89, bd (11.8)62.7, CH2
6′b3.67, dd (4.9, 11.9)3.66, dd (4.9, 11.8)
1′′131.3, qC131.4, qC
2′′6.77, bs114.9, CH6.77, bs114.8, CH
3′′146.5, qC146.6, qC
4′′146.4, qC146.4, qC
5′′6.75, d (7.6)116.3, CH6.75, d (8.3)116.3, CH
6′′6.65, bd (7.6)119.7, CH6.65, bd (8.3)119.7, CH
7′′4.39, dd (4.1, 7.2)80.7, CH4.39, dd (4.0, 7.8)80.6, CH
8′′a4.02–4.10, m69.3, CH24.14, dd (7.8, 11.2)69.2, CH2
8′′b4.02–4.10, m3.94–4.00, m
OCH 2CH33.34–3.42, m65.2, CH23.34–3.44, m65.2, CH2
OCH2CH 31.15, t (7.0)15.6, CH31.15, t (7.0)15.6, CH3