Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Intramolecular cycloadditions of keteniminium salts. A practical asymmetric synthesis of prostaglandins. ... The intramolecular [2 + 2] cycloaddition of keteniminium salt 5 derived from (2S, 5S)-dimethylpyirolidine is the key step of a short synthetic route toward prostaglandins.
![(3AR,4R,5R,6AS)-六氢-2-氧代-4-[(1E)-3-氧代-1-辛烯基]-2H-环戊并[B]呋喃-5-基 [1,1'-联苯]-4-甲酸酯结构式](https://image.chemsrc.com/caspic/006/31753-00-1.png)
![(3aR,6aS)-4-vinyltetrahydro-2H-cyclopenta[b]furan-2,5(3H)-dione结构式](https://image.chemsrc.com/caspic/350/139108-44-4.png)
![(3aR,5R,6aS)-2-oxo-4-vinylhexahydro-2H-cyclopenta[b]furan-5-yl [1,1'-biphenyl]-4-carboxylate结构式](https://image.chemsrc.com/caspic/236/139108-47-7.png)
