The first chiral version of Jackson N-benzyl-N-tosylaminoacetal cyclization. A new enantioselective total synthesis of 1-s-(-)-salsoiidine
作者:Viviana U. Ponzo、Teodoro S. Kaufman
DOI:10.1016/0040-4039(95)01975-n
日期:1995.12
The first chual verson of Jackson N-benzyl-N-losylamnnoacetal cyclization, enabling a new and efficient enantioselective total synthesis of I-S-(-)-salsolidine, is reported. Chirality was introduced by oxazaborolidine-catalyzed reduction of an aralkyl ketone. coupled with a Mitsunobu-type amination of the resulting benzylic alcohol, resulting in complete configurational inversion of the latter.
据报道,Jackson N-苄基-N-losylamnnoacetal环化的第一个chual版本可以实现IS-(-)-salsolidine的新的和有效的对映选择性全合成。通过恶唑硼烷催化的芳烷基酮的还原引入手性。与所得苄醇的Mitsunobu型胺化反应相结合,导致后者的完全构型转化。