Efficient Synthesis of the Structural Core of Tetracyclines by a Palladium-Catalyzed Domino Tsuji–Trost–Heck–Mizoroki Reaction
作者:Lutz F. Tietze、Thomas Redert、Hubertus P. Bell、Sascha Hellkamp、Laura M. Levy
DOI:10.1002/chem.200701676
日期:2008.3.7
The Pd-catalyzed dominoTsuji-Trost-Heck-Mizorokireactions of compounds 18, 27, and 34, respectively, each containing an allyl acetate and a halogen aryl moiety, lead to the formation of hexahydronaphthacenes 2 and 3 and octahydroanthracene 4 in 62-81 % yield. The octahydroanthracene and hexahydronaphthacene motifs are found in many natural products, for example, the tetracycline antibiotics.
A novel type of palladium-catalyzeddominoreaction is described combining Tsuji−Trost and Heck reactions. This method allows efficient access to tetrahydroanthracene derivatives 1 in up to 89% isolated yield in a one-pot process starting from the diketone 3. The tetrahydroanthracene structural motif is found in many natural products, such as in the antibiotic tetracycline.