Tetrahedron letters

Direct 3, 6-di-O-protection of glucal and galactal

W Kinzy, RR Schmidt

Index: Kinzy, Willy; Schmidt, Richard R. Tetrahedron Letters, 1987 , vol. 28, # 18 p. 1981 - 1984

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Citation Number: 38

Abstract

1 H-NMR (250 MHz, CDCl 3 , TMS) : δ = 6.27 (dd, 1H, 1-H; J 1,2 = 6.1, J 1,3 = 1.5 Hz), 4.62 (dd, 1H, 2-H; J 2,3 = 2.4 Hz), 4.23 L(ddd, 1H, 3-H), 4.01–3.80 (m, 3H, 5-H, 6-Ha, e), 3.76 (ddd, 1H, 4-H), 2.55 (d, 1H, 4-OH; J 4,OH ; = 3.4 Hz), 0.90, 0.91 (2s, 18H, C(CH 3 ) 3 , 0.12, 0.09 (2s, 12H, CH 3 ). : δ = 6.32 (dd, 1H, 1-H; J 1,2 = 6.35, J 1,3 = 1.7 Hz), 4.50 (ddd, 1H, 2-H), 4.43 (ddd, 1H, 3-H; ... ... The accompanying α-manno-isomer could be separated at this stage ...