Hunter, Gordon A.; McNab, Hamish, Journal of the Chemical Society. Perkin transactions I, 1995, # 10, p. 1209 - 1214
作者:Hunter, Gordon A.、McNab, Hamish
DOI:——
日期:——
Photochemical Synthesis and Some Reactions of 7-Oxa-and 7-Thiatricyclo[3.2.1.03,6]octan-2-ones
作者:Rolf-Christoph Gebel、Paul Margaretha
DOI:10.1002/hlca.19920750518
日期:1992.8.13
2-methyl-2-(alk-2-enyl)furan-3(2H)-ones 1 and 2-acetyl- or 2-methyl-2-(prop-2-enyl)thiophen-3(2H)-ones 2 affords the corresponding 1-acetyl- or 1-methyl-substituted 7-oxa- and 7-thiatricyclo[3.2.1.03,6]octan-2-ones 10 and 11, respectively, via regioselective intramolecular [2 + 2] photocycloaddition in 65–95% yield (Scheme 2). The 1-acetyl-substituted O-derivatives 10b and 10c undergo ring opening on treatment
The present invention relates to certain penem derivatives of the general formula I ##STR1## in which R represents a hydrogen atom or a carboxyl esterifying group, R.sup.1 represents certain unsubstituted and substituted aromatic and heterocyclic groups, and R.sup.2 represents a hydrogen atom, an unsubstituted or substituted alkyl or aryl group. The compound of formula I and salts thereof may be used in the treatment of bacterial infections in man and other animals.