Highly Enantioselective Synthesis of Orthogonally Protected (2S)-2,3-Diaminopropanoates through Catalytic Phase-Transfer Aza-Henry Reaction
作者:Gullapalli Kumaraswamy、Arigala Pitchaiah
DOI:10.1002/hlca.201100013
日期:2011.8
enantiomer‐enriched orthogonally protected different (2S)‐2,3‐diaminopropanoates and unnatural furyl‐substituted (tert‐butoxy)carbonyl (Boc) as well as (benzyloxy)carbonyl (Cbz) protected amino acid esters are accomplished by means of an enantioselective aza‐Henry reaction. A key feature of this protocol is organocatalysis as a genesis of chirality to ensure high enantioselectivity.
富含对映异构体的正交保护的不同(2 S)-2,3-二氨基丙酸酯和非天然呋喃基取代的(叔丁氧基)羰基(Boc)以及(苄氧基)羰基(Cbz)保护的氨基酸酯的合成对映选择性的氮杂-亨利反应的手段。该方案的关键特征是有机催化作为手性的来源,以确保高对映选择性。