摘要:
The synthesis is reported of the possible metastatic inhibitors - methyl beta-D-galactopyranosyl-(1 --> 4)-(2-acetamido-2-deoxy-alpha-D-glucopyranosyl)-(1 --> 6)-beta-D-galactopyranosyl-(1 --> 4)-beta-D-glucopyranoside (11) and methyl beta-D-galactopyranosyl-(1 --> 4)-(2-acetamido-2-deoxy-beta-D-glucopyranosyl)-(1 --> 6)-beta-D-galactopyranosyl-(1 --> 4)-beta-D-glucopyranoside (14) - by procedures for regio- and stereo-selective coupling, reduction of azido groups, N-acetylation, and O-deacetylation. (C) 1996 Elsevier Science Ltd.