Face Selectivity of the Diels-Alder Reaction of Thebaine-Like Morphinandienes, A Computational Approach (Chemistry of Opium Alkaloids, Part XXXI)

Chemistry of Opium Alkaloids, XLIII – A

Chemistry of Opium Alkaloids, XLIII – A PM3 Computational Approach to the Selectivity in the Diels-Alder Reactions of Thebaine and Analogues with Methyl Propenoate

✍ Baas, Jan M. A. ;Woudenberg, Richard H. ;Maat, Leendert 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 603 KB

## Abstract Geometrically fully‐optimized transition structures are calculated for the Diels‐Alder adducts of methyl propenoate and the 3‐demethoxy derivatives of the dienes thebaine, 6‐demethoxythebaine, 5β‐methylthebaine, and 5β‐methyl‐6‐demethoxythebaine using the semiempirical PM3 method. The n