A One-Pot Method for Removal of Thioacetyl Group via Desulfurization under Ultraviolet Light To Synthesize Deoxyglycosides
摘要:
We herein developed an efficient method for removing thioacetyl to synthesize acylated deoxy glycosides in a one-pot reaction, where the thioacetyl was selectively deacetylated by hydrazine hydrate in DMF within 2-5 min at room temperature, followed by desulfurization under UV light for 1-2 h in the presence of TCEP center dot HCl. The method was then used to synthesize 2-deoxy glycosides with absolute alpha/beta-configuration via stereoselective control of C-2 thioacetate in glycosylation.
Utilization of Sugars in Organic Synthesis. Part XXXIII. Thio-Sugars III. Radical Catalyzed Thione-Thiol Rearrangement of Cyclic Thionocarbonates on a Pyranose Ring: Formation of cis-Arranged Cyclic Thiolcarbonates.
Synthesis and binding affinity analysis of positional thiol analogs of mannopyranose for the elucidation of sulfur in different position
作者:Bin Wu、Jiantao Ge、Bo Ren、Zhichao Pei、Hai Dong
DOI:10.1016/j.tet.2015.04.060
日期:2015.6
serial inversion was successfully applied in the efficient synthesis of 2-thio- or 2,4-di-thio-mannoside derivatives. The protein recognition properties of the synthesized positionalthiolanalogs of mannose were then evaluated in a competition binding assay with the model lectin Concanavalin A (Con A), in order to investigate the roles of thiol group in the different position of the mannopyranose ring
We have developed efficient strategies for the synthesis of glycosyl donors with 2-thioacetyl (SAc) groups in order to synthesize 2-deoxysugars with absolute α/β configuration.