3,3-Di(acylthio)-2(4-allylthioazetidin-2-on-1-yl)propenoic acid

Details 3,3-Di(acylthio)-2(4-allylthioazetidin-2-on-1-yl)propenoic acid 3,3-Di(acylthio)-2(4-allylthioazetidin-2-on-1-yl)propenoic acid

1983-08-22

1985-07-02

Berch, Mark L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2602452R, 544 5, C07D20508, C07D51304, C07D49900

Patent

active

045267189

ABSTRACT:
What are disclosed are compounds, useful as intermediates in the preparation of substituted penem compounds, of the formula ##STR1## wherein R is a removable esterifying group, R.sup.1 is lower alkyl or phenyl, R.sup.2 is hydrogen, lower alkyl, lower alkoxyalkyl, lower alkanoyloxyalkyl, or tri-lower alkylsilyloxyalkyl, and R.sub.a, R.sub.b, R.sub.c, R.sub.d, and R.sub.e are hydrogen, aliphatic cycloaliphatic hydrocarbon, free or esterified carboxyl, halo, or cyano, and any two of R.sub.a -R.sub.e, taken together, may form a cycloaliphatic ring.

REFERENCES:
Ernest, Chem. Abs. 95, 169105k (1981).

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