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10. Compound 4: 1H NMR (200 MHz, CDCl3) δ: 7.61–7.73 (m, 5H), 7.36–7.46 (m, 5H), 5.19–5.45 (m, 6H), 4.06–4.14 (m,
1H), 3.94 (q, 1H, J=7.2 Hz), 3.6 (d, 2H, J=4.8 Hz), 2.61–2.84 (m, 4H), 1.98–2.43 (m, 7H), 1.47–1.59 (td, 1H, J=4 and 14
Hz), 1.06 (s, 9H), 0.83–0.99 (m, 21H), 0.40–0.63 (m, 12H). 13C NMR (50 MHz, CDCl3) δ: 135.6, 133.4, 131.9, 129.6,
129.1, 128.3, 128.1, 128, 127.6, 127.1, 76.3, 73.2, 62.6, 50.6, 48.2, 45.1, 26.8, 25.7, 25.5, 25.4, 19.1, 14.2, 6.8, 6.7, 4.9,
4.7.
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Chem. 1976, 41, 2194–2200.
1
15. Compound 1: UV (ethanol) λmax: 205 nm. H NMR (360 MHz, CDCl3) δ: 5.62–5.54 (m, 1H, H-5), 5.54–5.48 (m, 1H,
H-6), 5.47–5.23 (m, 6H, H-13, H-14, H-16, H-17, H-19, H-20), 4.19–4.10 (m, 1H, H-4), 4.07–3.96 (m, 1H, H-8), 4.01–3.93
(m, 1H, H-10), 3.66 (s, 3H, OMe), 2.81–2.75 (m, 5H, H-7, H-15, H-18), 2.45–2.37 (m, 3H, H-9, H-2), 2.22–2.13 (m, 1H,
H-11), 2.08–1.99 (m, 4H, H-12, H-21), 1.91 (dd, 1H, J=5 Hz, J=1 Hz, OH-8), 1.88–1.80 (m, 2H, H-3), 1.73 (dd, 1H, J=5
Hz, J=3 Hz, OH-10), 1.64 (td, 1H, J9,9 =15 Hz, J9 ,8=J9 ,10=4.5 Hz, H-90), 0.96 (t, 3H, J22,21=7.5 Hz, H-22). 13C NMR (90
MHz, CDCl3) δ: 172.2 (C-l), 135.2 (C-5), 132.1 (C-20), 129.3 (C-6, C-16), 128.7 (C-17), 128.4 (C-14), 127.6 (C-13),
126.9 (C-19), 76.4 (C-8, C-10), 71.5 (C-4), 53.6 (C-7), 51.7 (OMe), 50.8 (C-11), 42.4 (C-9), 32.0 (C-3), 30.0 (C-2), 27.1
(C-12), 25.7 (C-15, C-18), 20.5 (C-21), 14.2 (C-22). IR (NaCl) ν: 3520, 1720.
0
0
0