3. Spectral data for
1a: IR (KBr): 3350, 2925, 1720, 1650, 1615, 1540, 1430, 1360, 1328, 1261, 1215, 1130, 1111, 1078, 1058, 1021, 960, 910, 860, 790, 775, 699 cm
−1;
1H NMR (250 MHz, D
2O) A 1:1 mixture of α and β anomers, α anomer δ 1.86 (m, 3 H), 3.42 (m, 1 H), 3.71 (m, 2 H), 3.76 (m, 1 H), 3.78 (m, 1 H), 3.89 (dd,
J = 3.5 and 10.8 Hz, 1 H), 5.16 (d,
J = 3.5 Hz, 1 H), 5.40 (m, 1 H), 5.63 (m, 1 H); β anomer: δ 1.86 (m, 3 H), 3.40 (m, 1 H), 3.55 (m, 1 H), 3.67 (m, 1 H), 3.69 (m, 1 H), 3.81 (m, 1 H), 4.71 (d,
J = 8.4 Hz, 1 H), 5.40 (m, 1 H), 5.63 (m, 1 H);
13C NMR (62.9 MHz, D
2O) A 1:1 mixture of α and β anomers, δ 20.60 (q), 20.63 (q), 57.14 (d), 59.75 (d), 63.49 (t), 63.65 (t), 72.84 (d), 73.03 (d), 73.41 (d), 74.45 (d), 76.59 (d), 78.82 (d), 93.71 (d), 97.72 (d), 123.93 (t), 124.10 (t), 141.92 (s), 142.17 (s), 175.29 (s), 175.47 (s). Anal. Calcd for C
22H
49NO
6Si
4 (α- and β-2-deoxy-2-
N-methacrylamido-1,3,4,6- tetra-
O-trimethylsilyl-
D-glucose): C, 49.35; H, 9.16. Found: C, 49.20; H, 9.28. Spectral data for
2a: IR (KBr): 3337, 2927, 1747, 1657, 1612, 1544, 1452, 1378, 1327, 1277, 1214, 1157, 1052, 935, 872, 805 cm
−1;
1H NMR: (250 MHz, D
2O) δ 1.88 (s, 3 H), 3.2–4.5 (complex, 7 H), 5.17 (d,
J = 3.62 Hz, 1 H), 5.40 (s, 1 H), 5.65 (s, 1 H);
13C NMR: (62.9 MHz, D
2O) A mixture of α and β anomers, δ 20.36 (q), 20.74 (q), 56.87 (d), 57.28 (d), 60.24 (d), 63.46 (t), 63.66 (t), 70.67 (d), 70.83 (d), 72.57 (d), 74.15 (d), 79.98 (d), 101.64 (d), 106.71 (d), 123.94 (t), 124.01 (t), 142.18 (s, area 2), 175.74 (s), 175.93 (s). Anal. Calcd for C
22H
49 NO
6Si
4 (α- and β-3-deoxy-3-
N-methacrylamido-1,2,4,6-tetra-
O-trimethylsilyl-
D-glucose): C, 49.35; H, 9.16. Found: C, 49.10; H, 9.23. Spectral data for
3a: IR (KBr): 3364, 2914, 1722, 1648, 1609, 1524, 1444, 1364, 1319, 1244, 1214, 1137, 1069, 1040, 924, 794, 737 cm
−1;
1H NMR (250 MHz, D
2O) δ 1.74 (s, 3 H), 3.0–3.6 (complex, 7 H), 4.14 (d,
J = 8.22 Hz, 1 H), 5.25 (s, 1 H), 5.48 (s, 1 H);
13C NMR (75.5 MHz, D
2O) δ 18.04 (q, area 2), 40.52 (t), 40.70 (t), 70.16 (d), 71.51 (d), 71.79 (d), 71.84 (d), 73.30 (d), 73.50 (d), 74.23 (d), 75.98 (d), 99.31 (d), 103.39 (d), 121.41 (t, area 2), 139.29 (s, area 2), 172.39 (s), 172.46 (s); HRMS
m/z for C
22H
49NO
6Si
4 (α- and β-6-deoxy-6-
N-methacrylamido-1,2,3,4-tetra-
O-trimethylsilyl-
D-glucose), calcd 520.2403 [(M-CH
3)
+], found 520.2439.
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