Dispiroketals in synthesis (part 2): A new group for the selective protection of diequatorial vicinal diols in carbohydrates.

SV Ley, R Leslie, PD Tiffin, M Woods

Index: Ley, Steven V.; Leslie, Ray; Tiffin, Peter D.; Woods, Martin Tetrahedron Letters, 1992 , vol. 33, # 33 p. 4767 - 4770

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Citation Number: 45

Abstract

... Keywords. Dispiroketal; carbohydrate; protection; glycoside. References. 1; SV Ley, M. Woods, A. Zanotti-Gerosa; Synthesis (1992), p. 52. ... brown oil. Purification by column chromatography on silica gel (Merck 9385,) eluting with 80–100% ethyl acetate/petroleum ether gave 3 (390mg, 76%) as an off-white foam. [α] d 8.1 (c = 1.05, CHCl 3 ), v max (film)/cm −1 , 3463 (br OH). 2944, 1440 ...