473711-72-7Relevant academic research and scientific papers
Development of a Novel Method for Trimethylsilylation of Saccharides?
Chen, Jyun-Siao,Ke, Yi-Fan,Lin, Heng-Yan,Lin, Wesley,Yen, Wei-Chung,Wu, Hsin-Ru,Luo, Shun-Yuan
, p. 2000 - 2006 (2021/02/01)
The trimethylsilyl (TMS) group is widely used in carbo?hydrate synthesis, although this protecting group is unstable and its post-synthetic purification challenging. The successful trimethylsilyl?ation of carbohydrates mediated by recyclable and efficient
A 3,4-trans-fused cyclic protecting group facilitates α-selective catalytic synthesis of 2-deoxyglycosides
Balmond, Edward I.,Benito-Alifonso, David,Coe, Diane M.,Alder, Roger W.,McGarrigle, Eoghan M.,Galan, M. Carmen
supporting information, p. 8190 - 8194 (2014/08/18)
A practical approach has been developed to convert glucals and rhamnals into disaccharides or glycoconjugates with high α-selectivity and yields (77-97 %) using a trans-fused cyclic 3,4-O-disiloxane protecting group and TsOH·H2O (1 mol %) as a catalyst. Control of the anomeric selectivity arises from conformational locking of the intermediate oxacarbenium cation. Glucals outperform rhamnals because the C6 side-chain conformation augments the selectivity.
α-Selective organocatalytic synthesis of 2-deoxygalactosides
Balmond, Edward I.,Coe, Diane M.,Galan, M. Carmen,McGarrigle, Eoghan M.
supporting information, p. 9152 - 9155 (2012/10/29)
Alpha rules: A thiourea acts as an efficient organocatalyst for the glycosylation of protected galactals to form oligosaccharides containing a 2-deoxymonosaccharide moiety (see scheme). The reaction is highly stereoselective for α-linkages and proceeds by way of a syn-addition mechanism. Copyright
TMSOTf-catalyzed silylation: Streamlined regioselective one-pot protection and acetylation of carbohydrates
Joseph, A. Abragam,Verma, Ved Prakash,Liu, Xin-Yi,Wu, Chia-Hui,Dhurandhare, Vijay M.,Wang, Cheng-Chung
, p. 744 - 753 (2012/03/11)
A highly efficient TMSOTf-catalyzed HMDS silylation of sugars, which can easily be integrated with subsequent reactions in one-pot fashion, has been developed. Its usefulness was demonstrated by applications to streamlined regioselective one-pot protection and nonenzymatic acetylation of unprotected sugars. Monosaccharide and trehalose building blocks with orthogonally well-differentiated hydroxy groups were efficiently prepared starting with free sugars in one-pot fashion without the need for prior per-O-silylation. Regioselectively protected and acetylated building blocks were prepared directly from unprotected sugars in a one-pot manner involving up to five TMSOTf-catalyzed reactions, including a new TMSOTf-catalyzed silylation of carbohydrates. Copyright
Synthesis of biologically potent α1 →2-linked disaccharide derivatives via regioselective one-pot protection - Glycosylation
Wang, Cheng-Chung,Lee, Jinq-Chyi,Luo, Shun-Yuan,Fan, Hsin-Fang,Pai, Chin-Ling,Yang, Wei-Chieh,Lu, Ng-Dai,Hung, Shang-Cheng
, p. 2360 - 2362 (2007/10/03)
A highly regioselective benzyl and allyl protection of D-hexopyranosides allows their application in the synthesis of biologically potent α1→2 linked disaccharide derivatives by means of a regioselective one-pot protection-glycosylation (see scheme).
