Download Advances in Carbohydrate Chemistry and Biochemistry, Vol. 7 by Sidney M. Cantor PDF

By Sidney M. Cantor

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4-Methyl-~-fructose.. . . . . . . . . . . . . . . . . . . B-Methyl-~-fructose.. . . . . . . . . . . . . . . . . . . . . . 5-Methyl-D,cfructose (1) . . . . . . . . . . . . . . . . . XII. Trityl Ethers.. . . . . . . . ...................

F. Wiggins, J . Chem. , 1590 (1949). (19a) Quite recently two additional heptuloses have been shown to form <2,6 > <2,7 > anhydrides in acid solution; bguloheptulose passes partially to 2,7-anhydro-j3-~-guloheptulopyranose [Laura C. Stewart, N. K. Richtmyer and C. S. Hudson, J . Am. Chem. ,74,2206 (1952)l and D-idoheptulose to 2,7-anhydrofl-D-idoheptulopyranose [J. W. Pratt, N. K. Richtmyer and C. S. , 74, 2210 (1952)l. (20) H. Bredereck, M. Kothnig and E. , 78, 956 (1940). (21) G. R. Barker and M.

6 - 67 +36 76-78 162-166 -160-+ - 111 40-41 177 100 +14 62 02 80 02 62 02 02 02 69, 63, 04 63 03 69 66 66 06 -116 - - 1 3 0 4 -78 - (82) F. G. Young and R. C. Elderfield, J . Org. , 7, 241 (1942). (83) J. Avery and E. L. Hirst, J . Chm. , 2466 (1929). 65, 66 66 26, 67 36 83 80 36 35 METHYL ETHERS TABLEI VII The Methyl Ethers of ~-Fucose Substance ZMethyl-D-fucose -, methyl 3,4isopropylidenepyranosidea %Methyl-D-fucoae -, phenyloeszone -, methyl a-pyranoside methyl 8-pyranoside %Methyl-D-fuconicacid -, lactone -, 2,3,4-Trimethyl-~-fucose -, hydrate (a-anomer) -, anilide -, methyl 8-pyranoside Melting point, "C.

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