P. Areces et al.
200
Compound 6a: 1H NMR (400 MHz, CDCl3) d 7.67 (d, 2H, J3 ,2 ¼ 8.2 Hz, H-3000,
000 000
H-5000), 7.30 (d, 2H, J5 ,6 ¼ 8.2 Hz, H-2000, H-6000), 7.35 (s, H-3), 5.52–5.56 (m, 2H,
000 000
H-20, H-30), 5.38 (m, H-40), 5.12 (m, H-5), 4.20–4.00 (m, 2H, H-60a, H-60b), 3.95–
3.60 (m, 4H, 2H-10, 2H-100), 2.59 (br s, H-3a), 2.43 (s, 3H, CH3-Ar), 2.34 (m, H-7),
2.14 (m, 2H, H-7a, H-4), 2.06 (s, 3H, OAc), 2.05 (s, 3H, OAc), 2.04 (s, 3H, OAc),
1.70–1.50 (m, 2H, H-5), 1.35–1.20 (m, 2H, H-6), 0.97–0.80 (m, 2H, H-8); 13C
NMR (100 MHz, CDCl3) d 209.5 (C-1), 170.4, 169.9, 169.3 (3O-CO-CH3), 162.6
(C-3), 144.4 (C-2), 143.5 (C-1000), 136.5 (C-4000), 130.0 (C-20), 129.6 (C-3000 and
C-5000), 128.0 (C-30), 127.1 (C-2000, C-6000), 71.2 (C-40, C-50), 61.5 (C-60), 54.0
(C-7a), 49.8, 49.7 (C-10), 48.3 (C-3a), 41.9 (C-100), 38.8 (C-7) 37.7 (C-4), 31.1
(C-8), 28.9 (C-5), 28.2 (C-6), 21.4 (C-7000), 20.7, 20.5 (3O-CO-CH3). HRMS calcd
for C30H37NO9S þ H: 588.2267. Found: 588.2267.
Compound 6b: 1H NMR (400 MHz, CDCl3) d 7.66 (d, 2H, J3 ,2 ¼ 8.2 Hz, H-3000,
000 000
H-5000), 7.35 (m, H-3), 7.30 (d, 2H, J5 ,6 ¼ 8.2 Hz, H-2000, H-6000, 5.59–5.53 (m, 2H,
000 000
H-20, H-30), 5.39 (m, H-40), 5.13 (m, H-50), 4.27 (dd, J5 ,6a ¼ 4.0 Hz,
0
0
J6b ,6a ¼ 12.0 Hz, H-60a), 3.98–3.93 (m, H-60b), 3.90–3.73 (m, 4H, 2H-10,
2H-100), 2.59 (br s, H-3a), 2.43 8 (s, 3H, CH3-Ar), 2.35 (br s, H-7), 2.17–2.14
(m, 2H, H-7a, H-4), 2.07 (s, 3H, OAc), 2.05 (s, 3H, OAc), 2.04 (s, 3H, OAc),
1.67–1.57 (m, 2H, H-5), 1.31–1.25 (m, 2H, H-6), 0.93–0.90 (m, 2H, H-8); 13C
NMR (100 MHz, CDCl3) d 209.7 (C-1), 170.4, 170.0, 169.5 (3O-CO-CH3), 162.8
(C-3), 144.5 (C-2), 143.5 (C-1000), 136.6 (C-4000), 130.0 (C-3000, C-5000), 128.2 (C-30),
127.1 (C-2000, C-6000), 71.1, 71.0 (C-40, C-50), 61.9 (C-60), 54.1 (C-7a), 49.7 (C-10),
48.4 (C-3a), 41.8 (C-10), 38.9 (C-7), 37.8 (C-4), 31.2 (C-8), 29.0, 28.3 (C-5, C-6),
21.4 (C-7000), 20.8, 20.7, 20.6 (3O-CO-CH3); HRMS calcd for C30H37NO9S þ H:
588.2267. Found 588.2269.
0
0
Compound 7a: 1H NMR (400 MHz, CDCl3) d 7.67 (d, 2H, J3 ,2 ¼ 8.2 Hz, H-3000,
000 000
H-5000), 7.43 (br s, H-3), 7.31 (d, 2H, J5 ,6 ¼ 8.2 Hz, H-2000, H-6000), 6.29 (dd,
000 000
J4,5 ¼ 3.0 Hz, J5,6 ¼ 5.5 Hz, H-5), 6.19 (dd, J6,7 ¼ 2.9 Hz, J6,5 ¼ 5.5 Hz, H-6)
5.64–5.52 (m, 2H, H-20, H-30), 5.38 (m, H-40), 5.12 (m, H-50), 4.18–4.06 (m, 2H,
H-60a, H-60b), 3.93–3.73 (m, 4H, 2 H-10, 2 H-100), 2.90 (br s, H-7), 2.73 (br s,
H-3a), 2.68 (br s, H-4), 2.43 (s, 3H, CH3-Ar), 2.26 (d, J7a,7 ¼ 5.0 Hz, H-7a),
2.06 (s, 3H, OAc), 2.04 (s, 3H, OAc), 2.03 (s, 3H, OAc), 1.37 (d, J8a,8b ¼ 9.1 Hz,
H-8b), 1.12 (d, J8a,8b ¼ 9.1 Hz, H-8a); 13C NMR (100 MHz, CDCl3) d 208.4
(C-1), 170.0, 169.4 (3O-CO-CH3), 162.7 (C-3), 145.7 (C-2), 143.6 (C-1000), 138.5
(C-5), 137.0 (C-6), 136.6 (C-4000), 130.2 (C-20), 129.8, (C-3000, C-5000), 128.2 (C-30),
127.2 (C-2000, C-6000), 71.4, (C-40, C-50), 61.6 (C-60), 52.9 (C-7a), 50.1 (C-10), 48.0
(C-3a), 43.6 (C-7), 42.8 (C-4), 42.0 (C-100), 41.3 (C-8), 21.5 (C-7000), 20.8, 20.7
(3O-CO-CH3); HRMS calcd for C30H35NO9S þ H: 586.2110. Found: 586.2111.
Compound 7b: 1H NMR (400 MHz, CDCl3) d 7.67 (d, 2H, J2 ,3
000 000
¼
J5 ,6 ¼ 8.4 Hz, H-3000, H-5000), 7.42 (br s, H-3), 7.31 (d, 2H, J5 ,6 ¼ 8.4 Hz,
000 000
000 000