4-acylthio azetidinones

Details 4-acylthio azetidinones 4-acylthio azetidinones

C - Chemistry, Metallurgy

07

F

C07F 7/10 (2006.01) A61K 31/43 (2006.01) C07D 205/09 (2006.01) C07D 401/12 (2006.01) C07D 405/00 (2006.01) C07D 405/12 (2006.01) C07D 499/88 (2006.01) C07F 7/18 (2006.01)

Patent

CA 2115173

2115173 9325523 PCTABS00028 There is provided a process for preparing a compound of formula (I), wherein R is H or a hydroxy protecting group, R2 is an organic residue and R3 is H or a nitrogen protecting group, which process comprises reacting together a compound of formula (II), wherein R1 is a C1-C4 alkyl or a phenyl group, R and R3 are as defined above, a compound of formula (III), wherein R2 is as defined above and X is a cation or a silicon-containing residue, and a salt of a group IIa, IIb or transition element. The compounds of formula (I) are intermediates in the synthesis of penem antibiotics.

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