Enantio- and stereocontrolled syntheses of (−)-semburin, (+)-N-benzoylmeroquinene aldehyde, (−)-antirhine, and (+)-isocorynantheol from common (+)-norcamphor
作者:Mitsuhiro Kawamura、Kunio Ogasawara
DOI:10.1016/0040-4039(95)00543-l
日期:1995.5
A general enantio- and stereocontrolled route to the representative secologanin natural products, (−)-semburin, (+)-N-benzoylmeroquinene aldehyde, (−)-antirhine, and (+)-isocorynantheol, has been developed starting from (+)-norcamphor as a common chiral building block.
Validity of the proposed structures of (−)-semburin(1) and (−)-isosemburin(2), isolated from Swertia japonica Makino, has been established by the enantioselective total syntheses starting from the known chiral lactone(3).