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Report | Regular issue | Vol 20, No. 2, 1983, pp.279-282
Published online, 1st January, 1970
DOI: 10.3987/R-1983-02-0279
Stereospecific Synthesis of Racemic Intermadiates of the Penems and the Carbapenems from trans-Crotonic Acid

Masao Shiozaki, Noboru Ishida, Hiroshi Maruyama, and Tetsuo Hiraoka

*Chemical Research Laboratories and Analytical & Metabolic Research Laboratories, Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan


Stereocontrolled syntheses of two (±)-3-(1-t-butyldimethylsilyloxyethyl)-4-acetoxy-2-azetidinones (cis-10 and trans-10), which are key intermediates for the penems and the carbapenems, from trans-crotonic acid are reported.