An Asymmetric Synthesis of (2S,5S)-5-Substituted Azepane-2-Carboxylate Derivatives
摘要:
To facilitate a drug discovery project, we needed to develop a robust asymmetric synthesis of (2S,5S)-5-substituted-azepane-2-carboxylate derivatives. Two key requirements for the synthesis were flexibility for elaboration at C5 and suitability for large scale preparation. To this end we have successfully developed a scalable asymmetric synthesis of these derivatives that starts with known hydroxy-ketone 8. The key step features an oxidative cleavage of aza-bicyclo[3.2.2]nonene 14, which simultaneously generates the C2 and CS substituents in a stereoselective manner.
An Asymmetric Synthesis of (2S,5S)-5-Substituted Azepane-2-Carboxylate Derivatives
摘要:
To facilitate a drug discovery project, we needed to develop a robust asymmetric synthesis of (2S,5S)-5-substituted-azepane-2-carboxylate derivatives. Two key requirements for the synthesis were flexibility for elaboration at C5 and suitability for large scale preparation. To this end we have successfully developed a scalable asymmetric synthesis of these derivatives that starts with known hydroxy-ketone 8. The key step features an oxidative cleavage of aza-bicyclo[3.2.2]nonene 14, which simultaneously generates the C2 and CS substituents in a stereoselective manner.
An Asymmetric Synthesis of (2<i>S</i>,5<i>S</i>)-5-Substituted Azepane-2-Carboxylate Derivatives
作者:Donn G. Wishka、Marion Bédard、Katherine E. Brighty、Richard A. Buzon、Kathleen A. Farley、Michael W. Fichtner、Goss S. Kauffman、Jaap Kooistra、Jason G. Lewis、Hardwin O’Dowd、Ivan J. Samardjiev、Brian Samas、Geeta Yalamanchi、Mark C. Noe
DOI:10.1021/jo102475s
日期:2011.3.18
To facilitate a drug discovery project, we needed to develop a robust asymmetric synthesis of (2S,5S)-5-substituted-azepane-2-carboxylate derivatives. Two key requirements for the synthesis were flexibility for elaboration at C5 and suitability for large scale preparation. To this end we have successfully developed a scalable asymmetric synthesis of these derivatives that starts with known hydroxy-ketone 8. The key step features an oxidative cleavage of aza-bicyclo[3.2.2]nonene 14, which simultaneously generates the C2 and CS substituents in a stereoselective manner.