作者:M. Carmen Carreño、Renaud Des Mazery、Antonio Urbano、Françoise Colobert、Guy Solladié
DOI:10.1021/ol050620a
日期:2005.5.1
The asymmetric synthesis of both enantiomers of cis-lauthisan (3) is achieved in only six steps from diethyl pimelate (4), the key steps being the diastereodivergent reduction of beta-ketosulfoxide 7 and the highly cis-stereoselective Et(3)SiH/TMSOTf-promoted reductive cyclization of enantiopure hydroxy sulfinyl ketones (S)-14 and (R)-14.
与庚二酸二乙酯(4)仅用6个步骤即可完成顺式-桂丁醚(3)两种对映体的不对称合成,关键步骤是β-酮亚砜7的非对映异构还原和高度顺式-立体选择性Et(3)SiH / TMSOTf促进对映纯羟基亚磺酰基酮(S)-14和(R)-14的还原环化。