Practical synthetic methods to latent disarmed S-2-(2-propylthio)benzyl (SPTB) glycosides for interrupted Pummerer reaction mediated glycosylation have been discovered. Among them, both coupling reaction of PTB-Cl with glycosyl thiols and BF3·OEt2 promoted reaction of peracylated glycosides with PTB-SH produced peracylated SPTB glycosides in large scales and with high efficiency.
We reported relative green synthesis of 1-thioglycosides by straightforward reaction of per-O-acetylated glycoses with KSAc in EtOAc. Furthermore, the highly efficient method to synthesize per-O-acetylated glycosyl disulfide and glycosyl 1-thiol were developed. Based on this, the synthesis of auranofin was improved and two thioglucoside gliflozin analogues (possible SGLT inhibitors) were efficiently
We described a novel palladium-catalyzed domino procedure for the preparation of (hetero)aryl thio/selenoglycosides. Readily available (hetero)aryl iodides and easily accessible 1-thiosugars/1-selenosugars are utilized as the substrates. Meanwhile, 10 types of sugars are quite compatible with this reaction with good regio- and stereoselectivity, high efficiency, and broad applicability (up to 89%,