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Синтез полисахаридов - Кочетков Н.К.ISBN 5-02-001857-0 Скачать (прямая ссылка):  4.3.1. 1,6-Glycopyranans...................................................... 76 4.3.2. 1,3- and 1,4-Glycopyranans............................................. 79 4.3.3. Glycofuranans.......................................................... 92 4.4. Syntheses of heteropolysaccharides............................................ 96 4.5. Polysaccharides containing disaccharide repeating units ...................... 98 4.5.1. Glycan with alternating |3-1,6 and a-1,4-glycosidic linkages........... 98 4.5.2. Glucorhamnan........................................................... 100 216 4.5.3. Hexosaminoglucan....................................................... 101 4.5.4. Heteropolyuronid....................................................... 102 4.6. Microbial polysaccharides .................................................... 104 4.6.1. O-Antigenic polysaccharide of Salmonella newington..................... 106 4.6.2. O-Antigenic polysaccharide of Shigella flexneri........................ 111 4.6.3. Capsular polysaccharide of Streptococcus pneumoniae type 14............ 116 4.6.4. O-Antigenic polysaccharide of Pseudomonas aeruginosa X................. 119 4.6.5. О-Antigenic polysaccharide of Streptococcus pneumoniae type 3.......... 121 4.6.6. Galactan from lypopolysaccharide of 77 mutant of Salmonella............ 123 4.7. Limitation of cyano-ethylidene polycondensation as method of the polysaccharides synthesis..................................................................... 126 4.8. Formation of cyclic oligosaccharides.......................................... 129 4.9. The modification of trityl-cyanoethylidene polycondensation with "one-end" proli- feration of polysaccharide chain.............................................. 131 4.9.1. Synthesis of model polysaccharides .................................... 132 4.9.2. Synthesis of microbial polysaccharides................................. 134 4.9.3. Synthesis of compounds with few oligosaccharidic chains................ 140 4.9.4. On the perspectives of the synthesis of polysaccharides of block-type.. 143 Bibliography.................................................................. 146 Chapter 5. SYNTHESIS OF POLYSACCHARIDES BY POLYMERISATION OF ANHYDROALDOSES................................................................ 151 5.1. Polymerisation of 1,6-anhydroaldoses.......................................... '152 5.1.1. Mechanism of the reaction.............................................. 153 5.1.2. Conditions and general features of the reaction........................ 154 5.1.3. Synthesis of 1,6-glycans .............................................. 159 5.2. Polymerisation of 1,4-anhydroaldoses.......................................... 167 5.3. Polymerisation of 1,3-anhydroaldoses.......................................... 172 5.4. Polymerisation of 1,2-anhydroaldoses.......................................... 174 Bibliography.................................................................. 174 Chapter 6. SYNTHESIS OF POLYSACCHARIDES WITH REGULAR STRUCTURE BY METHOD OF TRITYL-THIOCYANATE TOLY CONDENSATION............................. 177 6.1. Trityl-thiocyanate condensation............................................... 178 6.2. Synthesis of polysaccharides with 1,2-c/.s-glycosidic linkages ............... 186 Bibliography.................................................................. 191 Chapter 7. OTHER APPROACHES TO THE SYNTHESIS OF POLYSACCHARIDES WITH REGULAR STRUCTURE........................................................ 192 Bibliography.................................................................. 193 Chapter 8. CH EMICO-ENZ YMETIC SYNTHESIS OF POLY SACCHARIDES............................ 194 8.1. Synthesis of polyprenylpyrophosphatoligosaccharides .......................... 197 8.1.1. Synthesis of 1-O-phosphates of oligosaccharides........................ 197 8.1.2. Synthesis of phosphates of polyprenols................................. 198 217 8.1.3. Synthesis of polyprenylpyrophosphatoligo'saccharides 8.2. Enzymatic polymerisation .................................. Bibliography................................................ CONCLUSION
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