The application discloses a kind of high
stereoselectivity of alpha-xylopyranoside bond construction method, belongs to the technical field of
sugar chemistry.The application uses full benzyl protected
xylose trichloroacetimidate as
glycosyl donor, by screening catalytic
system, donor /
acceptor ratio, additive type and
molecular sieve type, optimize with trimethyl
iodine silane as activating agent,
triphenylphosphine oxide as additive high alpha-
stereoselectivity glycosylation method.The method is mild in reaction condition, easy to operate, realizes the high
stereoselectivity construction of 1,2-cis xylopyranoside bond without the action of participating group.Moreover, the method can be suitable for a variety of
xylose donors with different protecting groups and a variety of
glycosyl acceptors, to provide an effective means for efficient construction of a variety of alpha-
xyloside and
arabinoxylan modified by arabian mycin.