Claims
- 1. A compound of the formula: ##STR15## wherein the 7-methoxy group occupies the .alpha.-configuration; R is H, ##STR16## Y is H, Cl, Br, No.sub.2 or methylsulfonyl; and a pharmaceutically acceptable salt thereof; straight or branched chain alkyl esters of 1 to 3 carbon atoms thereof; tertiary butyl ester thereof; benzhydryl ester thereof; trichloroethyl ester thereof, and acyloxymethyl esters thereof having the formula ##STR17## wherein R' is lower alkyl of 1 to 5 carbon atoms, phenyl, benzyl or phenethyl.
- 2. The compound of claim 1 wherein Y is H.
- 3. The compound of claim 2 as the free acid.
- 4. An acetoxymethyl ester of a compound of claim 2.
- 5. A pivaloyloxymethyl ester of a compound of claim 2.
- 6. A pharmaceutically acceptable salt of a compound of claim 1.
- 7. The benzhydryl, trichloroethyl, or tertiary butyl ester of a compound of claim 1.
- 8. An acyloxymethyl ester of a compound of claim 1 having the formula ##STR18## wherein R' is lower alkyl of 1 to 5 carbon atoms, phenyl, benzyl of phenethyl.
- 9. The compound of claim 3, 7-[2-ureido-2-thienyl)-acetamido]-7methoxycephalosporanic acid.
- 10. The compound of claim 3, 7-[2-(2-thienyl)-acetamido]-7-methoxy-3-desacetoxy-cephalosporanic acid.
- 11. The compound of claim 3, 7-[2-ureido-2-(2-thienyl)-acetamido]-7-methoxy-3-[(1-pyridinium)methyl]-.DELTA..sup.3 -cephem-4-carboxylic acid.
Parent Case Info
This is a division, of application Ser. No. 390,838, filed Aug. 23, 1973, now U.S. Pat. No. 3,978,051.
US Referenced Citations (11)
Divisions (1)
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Number |
Date |
Country |
Parent |
390838 |
Aug 1973 |
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