2-Trimethylsilylethyl glycosides. Treatment with electrophilic reagents to give trimethylsilyl- and methoxymethyl glucopyranosides and glucopyranosyl chloride
作者:Karl Jansson、Göran Magnusson
DOI:10.1016/s0040-4020(01)97583-0
日期:1990.1
acid or borontrifluoride etherate in the presence ofdimethoxymethane gave methoxymethyl 2346-tetra-O-acetyl-β-D-glucopyranoside in 54 62 and 66% yield respectively. In the absence of dimethoxymethane trimethylsilyl 2346-tetra-O-acetyl-β-D-glucopyranoside was formed in 78% yield. Treatment of I with 11-dichloromethylmethyl ether in the presence of zinc chloride gave 2346-tetra-O-acetyl-α-D-glucopyranosyl