(−)-pinocarvone oxide derived from (+)-pinocarvone into (−)-(1R:2S:3R:5R)-cis-2-hydroxypinocampheol and the conversion of (+)-pinocarvone oxide in (+)-(1R:2R:3R:5R)-trans-2-hydroxyneoisopinocampheol and (−)-(1R:2R:3R:5R)-cis-2-hydroxyisopinocampheol are described. With the knowledge of the absoluteconfigurations of these glycols, it was concluded that (−)-pinocarvone oxide and (+)-pinocarvone oxide have the
Asymmetric synthesis of a versatile 1,2,3-trisubstituted cyclopentane synthetic building block
作者:Taehwan Hwang、John L. Wood
DOI:10.1016/j.tet.2023.133384
日期:2023.5
Described herein is an asymmetricsynthesis of a functionalized 1,2,3-trisubstituted cyclopentane buildingblock, derivatives of which are commonly found in numerous natural products. Key steps include a Lewis acid-mediated cyclobutane ring opening, a diastereoselective chlorination, and a Favorskii rearrangement.