A minimalist approach to stereoselective glycosylation with unprotected donors.
A minimalist approach to stereoselective glycosylation with unprotected donors.
复制标题
用未保护供体进行立体选择性糖基化的最低限度方法。
DOI:
10.1038/s41467-017-01073-7
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发表时间:
2017-10-27
影响因子:
16.6
通讯作者:
Liu XW
中科院分区:
文献类型:
--
作者:
Le Mai Hoang K;He JX;Báti G;Chan-Park MB;Liu XW
Mechanistic study of carbohydrate interactions in biological systems calls for the chemical synthesis of these complex structures. Owing to the specific stereo-configuration at each anomeric linkage and diversity in branching, significant breakthroughs in recent years have focused on either stereoselective glycosylation methods or facile assembly of glycan chains. Here, we introduce the unification approach that offers both stereoselective glycosidic bond formation and removal of protection/deprotection steps required for further elongation. Using dialkylboryl triflate as an in situ masking reagent, a wide array of glycosyl donors carrying one to three unprotected hydroxyl groups reacts with various glycosyl acceptors to furnish the desired products with good control over regioselectivity and stereoselectivity. This approach demonstrates the feasibility of straightforward access to important structural scaffolds for complex glycoconjugate synthesis. Oligosaccharide synthesis is encumbered by multiple protection and deprotection steps. Here, the authors report a protection-free yet stereoselective and regioselective glycosylation strategy using boron-masked glycosyl donors, and demonstrate efficient synthesis of oligosaccharides over a wide substrate scope.
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DOI:
10.1021/acs.joc.5b02172
发表时间:
2015-12-18
期刊:
The Journal of organic chemistry
影响因子:
--
作者:
Dulaney SB;Xu Y;Wang P;Tiruchinapally G;Wang Z;Kathawa J;El-Dakdouki MH;Yang B;Liu J;Huang X
通讯作者:
Huang X
影响因子:
1.8
作者:
Imamura, A;Ando, H;Kiso, M
通讯作者:
Kiso, M
影响因子:
2.8
作者:
Kaji, Eisuke;Yamamoto, Daisuke;Nishino, Takashi
通讯作者:
Nishino, Takashi
影响因子:
3.2
作者:
Ishiwata, Akihiro;Lee, Yong Joo;Ito, Yukishige
通讯作者:
Ito, Yukishige
影响因子:
5.2
作者:
Codée, JDC;Litjens, REJN;van der Marel, GA
通讯作者:
van der Marel, GA