Most recently, Jacquinet and Rochepeau-Jobron reported the preparation of the disulfated a(1,3)-linked disaccharide (IV.51) of dermatan sulfate [see later-Scheme 48) . Earlier approaches to the d-galactosamine moiety relied on azidonitration of d-galactal to introduce the 2-amino functionality. Here, Jacquinet and Rochepeau-Jobron demonstrated the efficiency of using d-glucosamine derivatives as d-galac-
Scheme 46 The Ogawa synthesis of the dermatan sulfate hexasaccharide.
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