Catalytic and highly stereoselective β-mannopyranosylation using a 2,6-lactone-bridged mannopyranosyl ortho-hexynylbenzoate as donor

Yingle Feng, Jie Yang,Chenglin Cai,Taotao Sun,Qi Zhang,Yonghai Chai

Chinese Chemical Letters（2022）

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摘要

An efficient and catalytic protocol for highly stereoselective construction of β-mannopyranosylation has been developed. Glycosylation of 2,6-lactone-bridged mannopyranosyl ortho-hexynylbenzoate with various acceptors proceeded smoothly in the presence of 5% Hg(II) at room temperature, resulting in the corresponding β-mannosides in high yield and exclusive β-stereoselectivity.

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关键词

β-Mannanoside,2,6-Lactone,Catalytic glycosylation,Ortho-hexynylbenzoates,1,2-cis Glycosylation

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