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84 G. K. Hamer, F. Balza, N. Cyr, and A. S. Perlin, Can. J. , 1978, 56, 3109. 87 From the glycosyl tosylate (26) the 6-hydroxy-compound (27) was obtained, and the combination of these two gave access to the isomaltose derivative (28). 88 Thymidine and 2'-deoxycytidine 5'-/3-D-glucopyranosides were made using the 3 '-acetyl-5'-trityl derivatives and tetra-0-acetyl-cu-D-glycosyl bromide. '' h, bOQ CSOAc /OCH2 PhCH 0' AcO 0-C-CN I Me OBn R' OH OH (25) OBn RZ OBn (2 8) (26) PhNHCO Ts (27) H O(CH,)zC6&NHTs In the field of D-galactose-containing disaccharides 2-0$-D-galactopyranosylD-galactose was prepared by glycosylation of methyl 4,6-O-benzylidene-a-Dgalactoside,w and hepta-0-acetyl-D-lactosyl bromide was used in the preparation of the 0-glycoside of 8-ethoxycarbonyloctanol (cf.

7 0 P. J. Garegg and L. Maron, Acta Chem. , Ser. B , 1979, 3 3 , 39. 7 1 H. Steinlin, L. Camarda, and A . Vasella, Helv. Chim. Acta, 1979, 6 2 , 378. 7 2 A . F. Mironov, G. M. Isaeva, V. I. Shvets, R. P. Evstigneeva, A . N. Stepanov, A. A. Perov, and S. E. Kupriyanov, Bioorg. , 1978, 4, 1410 (Chem. A h . , 1979, 90, 121 955g). 7 3 N. Sh. Pal’yants and N. K. Abubakirov, Khim. Yrir. , 1978, 656 (Chem. A b s . , 68 69 1 9 7 9 , 9 0 , 1 5 25 3 8 ~ ) . ^^ The oxazoline method of obtaining glycosides of 2-acylamino-2-deoxy sugars is also referred to in Chapter 8.

Hirano, R . Yamasaki, S. Koto, and H. Iwaki, Carbohydr. , 1979, 68, 147. 8 1 M. Nozaki, T. Ogawa, and M. Matsui, Tennen Yuki Kagobutm Toronkai Koen Yoshishu, 21st, 1978, 213 (Chem. , 1979, 90, 168908i). 8 2 K. Takeo, Carbohydr. , 1979, 77, 245. 8 3 T. G. Villa, H. J . Phaff, and V. Notario, Carbohydr. , 1979, 74, 369. 84 G. K. Hamer, F. Balza, N. Cyr, and A. S. Perlin, Can. J. , 1978, 56, 3109. 87 From the glycosyl tosylate (26) the 6-hydroxy-compound (27) was obtained, and the combination of these two gave access to the isomaltose derivative (28).

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