Carbohydrate research p. 111 - 116 (1990)
Update date:2022-09-26
Topics:
Kolar
Kneissl
Wolf
Kaempchen
Glycosylation of benzyl-2,3,6-trideoxy-3-trifluoroacetamido-alpha-L-lyxo-h exopyranoside (6) with 3,4-di-O-acetyl-1,5-anhydro-2,6-dideoxy-L-lyxo-hex-1-enitol (1) or 4-O-acetyl-1,5-anhydro-3-O-benzyl-2,6-dideoxy-L-lyxo-hex-1-enit ol (2) in the presence of trimethylsilyl triflate/triethylamine gave alpha-(1----4)-linked disaccharide derivatives 7 and 8, respectively. In the presence of trimethylsilyl triflate only, 3,4-di-O-acetyl-1-O-tert-butyldimethylsilyl-2,6-dideoxy-beta-L-lyxo++ +-hexopyranose (3) and 6 gave mainly 7. Condensation of 1 or 2 with 9, obtained by O-deacylation of 8, afforded benzyl [O-(3,4-di-O-acetyl-2,6-dideoxy-alpha-L-lyso-hexopyranosyl)-(1----4)-O-( 3-O-benzyl-2,6-dideoxy-2,6-alpha-L-hexopyranosyl)-(1----4)-(2,3,6-tri deo xy-3-trifluoroacetamido-alpha-L-lyxo-hexopyranoside)] (11) and its 3''-benzyl analogue 12, respectively.
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Doi:10.1002/ardp.19903231209
(1990)Doi:10.1021/ol201664x
(2011)Doi:10.1155/2011/165047
(2011)Doi:10.1016/S0040-4039(00)97877-8
(1990)Doi:10.1021/jm00108a035
(1991)Doi:10.1002/hlca.660280197
(1945)