Double Stereodifferentiation in the “Acetate-Type” Aldol Reaction with Garner's Aldehyde. Stereocontrolled Synthesis of Polyhydroxylated γ-Amino Carbonyl Compounds
摘要:
The aldol reaction of acetamide enolates with protected chiral alpha-amino-beta-hydroxy aldehyde 1 (Garner's aidehyde) has been performed in a stereocontrolled way under double stereodifferentiation conditions using pseudoephedrine as the additional chiral information source attached to the enolate reagent. In addition, the obtained adduct has been transformed into other valuable chiral building blocks such as gamma-amino-beta,delta-dihydroxy acids, esters, and ketones.
Double Stereodifferentiation in the “Acetate-Type” Aldol Reaction with Garner's Aldehyde. Stereocontrolled Synthesis of Polyhydroxylated γ-Amino Carbonyl Compounds
摘要:
The aldol reaction of acetamide enolates with protected chiral alpha-amino-beta-hydroxy aldehyde 1 (Garner's aidehyde) has been performed in a stereocontrolled way under double stereodifferentiation conditions using pseudoephedrine as the additional chiral information source attached to the enolate reagent. In addition, the obtained adduct has been transformed into other valuable chiral building blocks such as gamma-amino-beta,delta-dihydroxy acids, esters, and ketones.
Role of Pseudoephedrine as Chiral Auxiliary in the “Acetate-Type” Aldol Reaction with Chiral Aldehydes; Asymmetric Synthesis of Highly Functionalized Chiral Building Blocks
作者:Marta Ocejo、Luisa Carrillo、Jose L. Vicario、Dolores Badía、Efraim Reyes
DOI:10.1021/jo101878j
日期:2011.1.21
have studied in depth the aldol reaction between acetamide enolates and chiral α-heterosubstituted aldehydes using pseudoephedrine as chiralauxiliary under double stereodifferentiation conditions, showing that high diastereoselectivities can only be achieved under the matched combination of reagents and provided that the α-heteroatom-containing substituent of the chiral aldehyde is conveniently protected
Double Stereodifferentiation in the “Acetate-Type” Aldol Reaction with Garner's Aldehyde. Stereocontrolled Synthesis of Polyhydroxylated γ-Amino Carbonyl Compounds
作者:Jose L. Vicario、Mónica Rodriguez、Dolores Badía、Luisa Carrillo、Efraim Reyes
DOI:10.1021/ol0487433
日期:2004.9.1
The aldol reaction of acetamide enolates with protected chiral alpha-amino-beta-hydroxy aldehyde 1 (Garner's aidehyde) has been performed in a stereocontrolled way under double stereodifferentiation conditions using pseudoephedrine as the additional chiral information source attached to the enolate reagent. In addition, the obtained adduct has been transformed into other valuable chiral building blocks such as gamma-amino-beta,delta-dihydroxy acids, esters, and ketones.