A FACILE ENZYMATIC SYNTHESIS OF GALACTOSYL-BETA-1,3 GLYCALS

摘要

An enzymatic process is disclosed for the preparation of galactosyl. beta.1,3glycal disaccharides such as Gal&bgr;1,3Glucal, an intermediate useful in Le.sup.a preparation and an inhibitor of &bgr;- galactosidase. The process utilizes &bgr;-galactosidase, an enzyme usually used for bond breaking, to form a bond between a galactoside and a glucal such as glycal, a 6-O--C.sub.1 -C.sub.6 acylglucal or 6-O--C.sub. 1 -C.sub.6 acetylgalactal.