Enantioselective Access to 2,7-Cis-Disubstituted Oxepanes: Formal Synthesis of (+)-Isolaurepan
摘要:
[GRAPHICS]The asymmetric synthesis of 2,7-cis-disubstituted oxepanes bearing a sulfoxide is achieved from commercially available precursors in only five steps. The key step is the highly diastereoselective Et3SiH/TMSOTf-promoted reductive cyclization of enantiopure hydroxysulfinyl aryl or alkyl ketones.
Enantioselective Access to 2,7-Cis-Disubstituted Oxepanes: Formal Synthesis of (+)-Isolaurepan
摘要:
[GRAPHICS]The asymmetric synthesis of 2,7-cis-disubstituted oxepanes bearing a sulfoxide is achieved from commercially available precursors in only five steps. The key step is the highly diastereoselective Et3SiH/TMSOTf-promoted reductive cyclization of enantiopure hydroxysulfinyl aryl or alkyl ketones.