Synthesis and modifications of alkyne derivatives of dihydroquinopimaric, maleopimaric, and fumaropimaric acids

Аннотация

Reactions of maleopimaric and dihydroquinopimaric acid chlorides with propargyl alcohol and propargylamine afforded new terminal diterpene alkynes, and Sonogashira cross-coupling of the latter with 4-iodonitrobenzene led to the formation of arylalkynyl derivatives of Diels–Alder adducts of levopimaric acid.