Table 2 1 H in Withanolides from three species of the genus Deprea (Solanaceae). Chemotaxonomical considerations

Table 2 1 H NMR spectroscopic data of compounds 4–8 in CDCl. a
Position456782a5.94 dd (10.0, 2.6)3.33 dt (20.4, 3.0)6.12 d (9.7)4.63 dd (6.5, 1.4)6.09 dd (9.9, 1.5)2b–2.84 ddd (20.4, 4.8, 1.0)–––3a6.80 ddd (10.0, 4.9, 2.6)5.87 ddd (9.7, 4.8, 3.0)7.00 dd (9.7, 6.0)6.63 dd (8.3, 6.5)7.03 dd (9.9, 4.3)4 a3.00 dd (21.4, 4.9)6.13 dd (9.7, 2.5)6.25 d (6.0)6.80 dd (8.3, 1.4)3.37 dd (4.4, 1.5)4 b3.31 br d (21.4)––––65.62 dd (5.6, 1.8)5.61 d (5.4)4.34 d (2.3)4.12 dd (2.2, 1.5)3.45 br s74.22 t (3.8)4.33 t (4.5)4.14 t (2.5)4.24 t (2.3)4.20 t (2.7)81.37 dd (12.5, 3.8)1.44 dd (12.6, 4.0)1.96 m1.82 m1.81 dd (11.6, 3.2)92.30 td (12.5, 4.1)2.44 m1.91 m1.85 m2.08 m11a2.47 m2.03 m2.06 m2.43 m2.06 m11b1.30 m1.15 m1.29 m1.43 m1.28 m12a1.93 td (13.0, 3.5)1.93 m1.76 m1.73 m1.72 m12b1.73 dt (13.0, 3.3)1.71 m1.56 m1.66 m1.60 m15a2.37 td (12.8, 5.2)2.38 td (12.9, 4.8)2.36 m2.33 m2.35 m15b1.67 ddd (14.0, 9.5, 4.9)1.70 m1.76 m1.73 m1.75 m16a2.02 m2.03 m2.02 m2.05 m2.05 m16b1.98 m2.03 m1.98 m2.02 m2.01 m181.20 s1.20 s1.23 s1.22 s1.21 s191.20 s1.29 s1.41 s1.50 s1.45 s202.51 m2.52 m2.51 m2.61 m2.56 m21a2.25 dd (14.1, 6.0)2.24 dd (14.2, 6.1)2.12 dd (14.3, 6.2)2.16 dd (13.9, 6.5)2.16 dd (14.0, 6.5)21b1.56 dd (14.1, 11.9)1.57 dd (14.2, 11.8)1.55 m1.56 m1.57 dd (14.0, 11.7)224.70 td (3.6, 1.7)4.70 td (3.6, 1.8)4.61 td (3.3, 1.6)4.73 td (3.6, 1.4)4.64 td (3.6, 1.6)23a2.44 dd (15.5, 1.7)2.46 dd (15.5, 1.8)2.25 dd (15.4, 1.6)2.00 m2.37 dd (15.4, 1.8)23b2.01 m2.02 m1.96 m2.04 m1.99 m271.15 s1.15 s1.12 s1.16 s1.16 s281.18 s1.19 s1.17 s1.21 s1.20 s
a Chemicals shifts (δ) downfield from TMS, J couplings (in parentheses) in Hz. 400.13 MHz.