A New Generation of Glycoconjugated Azo Dyes Based on Aminosugars

Table 1

Preparation of amido-ester protected GADs.

Entry	Reactants		Condensation system	Condensation product (yield%)
	Sugar moiety	Dye moiety
1	6	9	Method A	11 (74)
2	7	9	Method A	12 (82)
3	6	8	Method A	13 (86)
4	4	10	Method B	14 (95)
5	5	10	Method B	15 (76)

Method A: DCC, DMAP, and THF; method B: DMTMM and THF.