An Efficient Synthesis of 2’-O-(b-D-Glucopyranosyl)- and 2’-O-(2-Acetamido-2-deoxy-b-D-glucopyranosyl)-L-biopterins
作者:Tadashi Hanaya、Kazuyuki Soranaka、Koichiro Harada、Hiroshi Yamaguchi、Ryo Suzuki、Yusumi Endo、Hiroshi Yamamoto、Wolfgang Pfleiderer
DOI:10.3987/com-05-s(t)28
日期:——
N-2-(N,N-Dimethylaminomethylene)-3-[2-(4-nitrophenyl)ethyl]-1',2'-di-O-trimethylsilyl-L-biopterin (6) was prepared from L-biopterin in 5 steps. Glycosylation of 6 with 2,3,4,6-tetra-O-benzoyl-alpha-D-glucopyranosyl trichloroacetimidate (9) and 1,3,4,6-tetra-O-acetyl-2-phtalimido-beta-D-glucopyranose (10) respectively afforded the corresponding 2'-O-(beta-D-glucopyranosyl) derivatives (12b, 12c) as major products. Removal of protecting groups of 12c provided naturally occurring limipterin (2).