Journal
ORGANIC LETTERS
Volume 13, Issue 20, Pages 5508-5511Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol202232v
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Funding
- National Basic Research Program of China [2010CB833202]
- National Natural Science Foundation of China [90713003, 20932009]
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Glycosylation of the acid labile betulin and betulinic acid derivatives was achieved with glycosyl ortho-hexynyibenzoates as donors under the catalysis of PPh3AuNTf2; this enabled the efficient synthesis of lupane-type saponins, as exemplified by the total synthesis of the proposed betulinic acid trisaccharide from Bersama engleriana.
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