Synthetic studies on β-lactam antibiotics. 18. Convenient,stereocontrolled synthesis of 3-methyl 7α-methoxy-1-oxacephems |
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Authors: | Tsutomu Aoki Mitsuru Yoshioka Yuji Sendo Wataru Nagata |
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Institution: | Shionogi Research Laboratory, Shionogi & Co., Ltd., Fukushima-ku, Osaka, 553 Japan |
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Abstract: | Alcohols and , prepared from , underwent completely stereospecific etherification to give 1-oxacephams and , which were converted into the 1-oxacephem nucleus via and . Functionalization at C-3′ in and was unsuccessful. |
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Keywords: | |
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