Gram-Scale Synthesis of the A′B′-Subunit of Angelmicin B
摘要:
A gram-scale enantiospecific synthesis of the A'B'-subunit of angelmicin B is reported. The synthesis involves a Lewis acid catalyzed contrasteric Dials-Alder reaction and a tandem silyl zincate 1,6-addition/enolate oxidation sequence.
Gram-Scale Synthesis of the A′B′-Subunit of Angelmicin B
作者:Benjamin C. Milgram、Brian B. Liau、Matthew D. Shair
DOI:10.1021/ol202728v
日期:2011.12.16
A gram-scale enantiospecific synthesis of the A'B'-subunit of angelmicin B is reported. The synthesis involves a Lewis acid catalyzed contrasteric Dials-Alder reaction and a tandem silyl zincate 1,6-addition/enolate oxidation sequence.
Iron(iii) chloride-tandem catalysis for a one-pot regioselective protection of glycopyranosides
Tandemcatalysis by using iron(III) chloride hexahydrate leads to carbohydrate building blocks displaying an orthogonal protecting group pattern as illustrated by the regioselectiveprotection of trehalose and maltose disaccharides.