Synthesis of 4-deoxy-β-rhodomycinone via incorporation of a chiral building block derived from methyl α-d-glucopyranoside
作者:Karsten Krohn、Heidi Heins
DOI:10.1016/0008-6215(89)85069-4
日期:1989.8
Abstract Methyl 4,6- O -benzylidene-3-deoxy-2- C -ethyl-α- d - ribo -hexopyranoside was converted in six steps into ( R )-3-benzyloxy-3-(trityloxymethyl)pentanal. This chiralbuildingblock was coupled to leucoquinizarin to afford 4-deoxy-γ-rhodomycinone, using two successive Marschalk reactions. Hydroxylation at C-7 gave 4-deoxy-β-rhodomycinone.