129796-74-3

Upstream product

• 108-24-7 acetic anhydride 
• 86795-39-3 (2S,3R,4R,5S,6S)-3,4,5-tris(benzyloxy)-2-chloro-6-methyltetrahydro-2H-pyran 
• 37152-49-1 cholesteryl 3,4,6-tri-O-acetyl-β-D-gluco-pyranoside 

Relevant academic research and scientific papers

β-selective glycosylation using axial-rich and 2-o-rhamnosylated glucosyl donors controlled by the protecting pattern of the second sugar

Herein, we describe two counterexamples of the previously reported β/α-selectivity of 96/4 for glycosylation using ethyl 2-O-[2,3,4-tris-O-tert-butyldimethylsilyl (TBS)-α-L-rhamnopyranosyl]-3,4,6-trisO-TBS-thio-β-D-glucopyranoside as the glycosyl donor. F

α-Selective thermal glycosidation of rhamnosyl and mannosyl chlorides

Stereoselective thermal glycosylation of a variety of alcohols with 2,3,4-tri-O-benzylα-L-rhamnopyranosyl chloride and 2,3,4,6-tstra-O-benzyl-α-D-mannopyranosyl chloride have achieved to give α-glycosides in high selectivity.