1. A stereoselective total synthesis of prostaglandin E1
2. A new stereoselective total synthesis of prostaglandin E1 and its optical antipodes
3. An efficient new approach to the synthesis of the prostaglandins. Synthesis of PGE1
4. Ueber einige Abkömmlinge der Lävulinsäure
5. (a) A. S. Onischenko, “Diene Synthesis,” Israel Program of Scientific Translations, Jerusalem (1964) does not list any αβ-unsaturated lactone dieno- philes; (b) During the course of our work, 4,4-dimethylbut-2-enolide (terelactone) was reported to be an unreactive dienophile; reaction with cyclopentadiene at 160° occurred in low yield. [T. R. Kelly and R. W. McNutt, Tetrahedron Lett. 285 (1975)].