A Chiral Synthesis of (−)-Spiro[1-azabicyclo[2.2.2]octane-3,5‘- oxazolidin-2‘-one]: A Conformationally Restricted Analogue of Acetylcholine That Is a Potent and Selective α7 Nicotinic Receptor Agonist
摘要:
A direct, short chiral synthesis of the selective 0 nicotinic receptor agonist (-)-spiro[l-azabicyclo[2.2.2]octane-3,5'-oxazolidin-2'-one] (AR-R17779) is presented. The key step utilized attack of the dianion of the (R)-HYTRA ester [(R)-(+)-2-hydroxy-1,2,2-triphenylethyl acetate] on quinuclidin-3-one, followed by a selective precipitation of the diasteriomeric tertiary alcohol that led to (S)-(-)-AR-R17779 in two additional steps.
A Chiral Synthesis of (−)-Spiro[1-azabicyclo[2.2.2]octane-3,5‘- oxazolidin-2‘-one]: A Conformationally Restricted Analogue of Acetylcholine That Is a Potent and Selective α7 Nicotinic Receptor Agonist
摘要:
A direct, short chiral synthesis of the selective 0 nicotinic receptor agonist (-)-spiro[l-azabicyclo[2.2.2]octane-3,5'-oxazolidin-2'-one] (AR-R17779) is presented. The key step utilized attack of the dianion of the (R)-HYTRA ester [(R)-(+)-2-hydroxy-1,2,2-triphenylethyl acetate] on quinuclidin-3-one, followed by a selective precipitation of the diasteriomeric tertiary alcohol that led to (S)-(-)-AR-R17779 in two additional steps.
A Chiral Synthesis of (−)-Spiro[1-azabicyclo[2.2.2]octane-3,5‘- oxazolidin-2‘-one]: A Conformationally Restricted Analogue of Acetylcholine That Is a Potent and Selective α7 Nicotinic Receptor Agonist
作者:John E. Macor、George Mullen、Patrick Verhoest、Anthony Sampognaro、Bruce Shepardson、Robert A. Mack
DOI:10.1021/jo049404q
日期:2004.9.1
A direct, short chiral synthesis of the selective 0 nicotinic receptor agonist (-)-spiro[l-azabicyclo[2.2.2]octane-3,5'-oxazolidin-2'-one] (AR-R17779) is presented. The key step utilized attack of the dianion of the (R)-HYTRA ester [(R)-(+)-2-hydroxy-1,2,2-triphenylethyl acetate] on quinuclidin-3-one, followed by a selective precipitation of the diasteriomeric tertiary alcohol that led to (S)-(-)-AR-R17779 in two additional steps.