Synthetic studies on β-lactam antibiotics. 13. Transformation of 6-epipenicillins to 2R-{(1S, 5R)-2-oxa-6-oxo-4, 7-diazabicyclo [3.2. 0] hept-3-en-7-yl}-3-methylbut-3- …

Y Hamashima, S Yamamoto, S Uyeo, M Yoshioka…

Index: Hamashima,Y. et al. Tetrahedron Letters, 1979 , # 28 p. 2595 - 2598

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Abstract

Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Reaction of 2β-unsubstituted or functionalized-methyl 6-epipenicillin sulfoxides with tervalent phosphorus compounds gave azetidinone-epi-oxazolines , important intermediates in synthesis of 7α-methoxy-1-oxacephems. Preparation of the 2β-functionalized-methyl substrates is ...