Novel Synthetic Approaches to Manβ1-4GLCNAc and Le^x Units from N-AcetyllactosamineFootnote¹
1. Dedicated to the memory of Professor Akira Hascgawa.

Ken-ichi Sato Laboratory of Organic Chemistry, Faculty of Engineering, Kanagawa University, Rokkakubashi, Kanagawa-ku, Yokohama, Japan, 221

Hiroshi Seki Laboratory of Organic Chemistry, Faculty of Engineering, Kanagawa University, Rokkakubashi, Kanagawa-ku, Yokohama, Japan, 221

Akira Yoshitomo Laboratory of Organic Chemistry, Faculty of Engineering, Kanagawa University, Rokkakubashi, Kanagawa-ku, Yokohama, Japan, 221

Hiroshi Nanaumi Laboratory of Organic Chemistry, Faculty of Engineering, Kanagawa University, Rokkakubashi, Kanagawa-ku, Yokohama, Japan, 221

Yoshimitsu Takai Laboratory of Organic Chemistry, Faculty of Engineering, Kanagawa University, Rokkakubashi, Kanagawa-ku, Yokohama, Japan, 221

Yoshiharu Ishido Laboratory of Pharmaceutical Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Science, 1432-1 Horinouchi, Hachioji, Tokyo, Japan, 192-03

Abstract

Regioselective protection of N-acetyllactosamine with triphenylmethyl (trityl) and pivaloyl groups afforded the corresponding 3, 2′, 4′-tri- and 2′,4′-dihydroxyl derivatives in a few steps. respectively; these derivatives were used efficiently for the syntheses of the title compounds from N-acetyllactosamine in 46% (7 steps) and 19% (8 steps) overall yields. respectively.

1. Dedicated to the memory of Professor Akira Hascgawa.

Notes

1. Dedicated to the memory of Professor Akira Hascgawa.

Dedicated to the memory of Professor Akira Hasegawa

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Novel Synthetic Approaches to Manβ1-4GLCNAc and Le^x Units from N-AcetyllactosamineFootnote¹
1. Dedicated to the memory of Professor Akira Hascgawa.

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Novel Synthetic Approaches to Manβ1-4GLCNAc and Le^x Units from N-AcetyllactosamineFootnote¹
1. Dedicated to the memory of Professor Akira Hascgawa.