Journal
NATURAL PRODUCT REPORTS
Volume 32, Issue 9, Pages 1331-1355Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5np00033e
Keywords
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Funding
- Ministry of Science and Technology of China [2012ZX09502-002]
- National Natural Science Foundation of China [21432012]
- Fundamental Research Funds for the Central Universities [WY1514052]
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The total syntheses of 33 complex natural O-glycosides, such as the glycosides of macrocyclic lactones/lactams, enediynes, angucyclines, and anthracyclines, are highlighted, with a major focus being placed on the O-glycosylation reactions which connect the saccharides and the aglycones. These successful O-glycosylation reactions employ such donors as glycosyl bromides, fluorides, iodides, trichloroacetimidates, N-phenyl trifluoroacetimidates, thioglycosides, sulfoxides, heteroaryl thioglycosides, 1-hydroxyl sugars, 1-O-acetates, and ortho-alkynylbenzoates. Each synthesis is depicted starting from the O-glycosylation of the aglycone (or its precursor); the glycosylation conditions and outcomes (yields and stereoselectivities) are discussed, and the subsequent transformations toward the final target, including the elongation of the glycan, the elaboration of the aglycone, and the protecting group manipulations are also given in detail.
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