SIMPLE SYNTHESES OF L-FUCOPYRANOSE AND FUCOSIDASE INHIBITORS UTILIZING THE HIGHLY STEREOSELECTIVE METHYLATION OF AN ARABINOFURANOSIDE 5-UROSE DERIVATIVE
S. Takahashi et K. Kuzuhara, SIMPLE SYNTHESES OF L-FUCOPYRANOSE AND FUCOSIDASE INHIBITORS UTILIZING THE HIGHLY STEREOSELECTIVE METHYLATION OF AN ARABINOFURANOSIDE 5-UROSE DERIVATIVE, Journal of the Chemical Society. Perkin transactions. I, (5), 1997, pp. 607-612
The simple syntheses of L-fucopyranose 1 and its three analogues 2-4 a
re described. A key reaction is a stereocontrolled elongation by one c
arbon unit at the side chain of an alpha-D-arabino-pentodialdo-1,4-fur
anoside 9 with MeMgI-ZnCl2 or Me(3)Al. Diastereofacial selectivities o
f more than 92% were achieved.