期刊
ORGANIC LETTERS
卷 19, 期 10, 页码 2638-2641出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.7b00976
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资金
- National Science Foundation (NSF) [1465003]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1465003] Funding Source: National Science Foundation
The stereoselective synthesis of sialosides is still one of the major challenges in carbohydrate chemistry. The synthesis and glycosidation of novel sialyl donors bearing a picoloyl substituent at C-4 are reported. High stereoselectivities and faster reactions were observed in the presence of an excess of triflic acid. The acid excess does not have the same effect on conventional sialyl donors, which suggests a possible synergistic effect of the picoloyl substituent and the triflic acid.
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