Claims
- 1. A thiazolidine azetidinone represented by the formula (1): ##STR12## wherein R.sup.1 is a member selected from the group consisting of a substituted aryl group, an unsubstituted aryl group, a substituted aryloxy group and an unsubstituted aryloxy group; R.sup.2 CO is a carboxyl residue, and R.sup.3 is member selected from the group consisting of hydrogen atom and carboxylic protective group.
- 2. The thiazolidine azetidinone derivative of claim 1, wherein R.sup.1 is selected from the group consisting of unsubstituted aryl and unsubstituted aryloxy.
- 3. The thiazolidine azetidinone derivative of claim 1, wherein R.sup.1 is phenyl, R.sup.2 is hydrogen and R.sup.3 is p-methoxybenzyl.
- 4. The thiazolidine azetidinone derivative of claim 1, wherein R.sup.1 is phenyl, R.sup.2 is methyl, and R.sup.3 is p-methoxybenzyl.
- 5. A thiazolidine azetidinone represented by the formula (1): ##STR13## wherein R.sup.1 is a member selected from the group consisting of phenyl, paranitrophenyl and parachlorophenyl; R.sup.2 is a member selected from the group consisting of hydrogen, methyl, ethyl, n-butyl, phenyl, paratolyl, paranitrophenyl and parachlorophenyl; and R.sup.3 is a member selected from the group consisting of benzyl, paranitrobenzyl, paramethoxybenzyl, diphenylmethyl, methyl, ethyl, tertiary butyl, and 2,2,2-trichloroethyl.
Priority Claims (2)
Number |
Date |
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3-109904 |
Feb 1991 |
JPX |
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3-109906 |
Feb 1991 |
JPX |
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CROSS-REFERENCE TO RELATED APPLICATION
This application is a divisional application of U.S. Ser. No. 08/076,195, filed Jun. 14, 1993, now U.S. Pat. No. 5,405,955, which is divisional application of U.S. Ser. No. 07/836,527, filed Feb. 18, 1992, now abandoned. This application is a continuation application of U.S. Ser. No. 07/836,527, filed Feb. 18, 1992, now abandoned.
US Referenced Citations (11)
Foreign Referenced Citations (2)
Number |
Date |
Country |
0122002 |
Oct 1984 |
EPX |
2504927 |
May 1982 |
FRX |
Non-Patent Literature Citations (3)
Entry |
Eagle et al. "The Rearrangement of p-Nitrobenyl 2R-(1R, 5R)-3-Benzylidene-4-Formyl-6-Oxo-4, 7-Diaza-2-Thiabicyclo (3, 2, 0) Heptan-7-yl)-3-Methylbut-3-Enoate 2'-Oxide" in Tetrahedron Letters, No. 47, pp. 4703-4706, Pergamon Press 1978. Month of publication not provided. |
Sigeru Torii et al. "Penicillin-Cephalosporin Conversion III. A Novel Route to 3-Chloromethyl-.DELTA..sup.3 -Cephans" in Tetr. Letters, vol. 23, No. 21, pp. 2187-2188, Month of publication not provided 1982. |
Search Report in EPO Appln. No. 92102776.9 mailed Sep. 4, 1992. |
Divisions (1)
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836527 |
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Continuations (1)
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836527 |
Feb 1992 |
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