1. Department of Chemistry, National Tsing Hua University, 101, Section 2, Kuang‐Fu Road, Hsinchu 300 (Taiwan), Fax: (+886)?3‐5711082;2. Department of Organic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032 (India);3. Institute of Chemistry, University of the Philippines, Diliman, Quezon City 1101 (Philippines);4. Genomics Research Center, Academia Sinica, 128, Section 2, Academia Road, Taipei 115 (Taiwan)
Abstract:
Making ends meet : The L ‐gulopyranosyl trichloroacetimidate and 1,6‐anhydro‐2,3‐di‐O‐benzyl‐β‐L ‐gulopyranose, efficiently derived from L ‐ascorbic acid, were individually used as a starting unit and an elongation unit to prepare L ‐guluronic acid linked alginate oligosaccharides in excellent α selectivity and in good yields.
