Claims
- 1. A 6-diazo-penicillanic acid-1,1-dioxide of formula ##STR12## wherein X is selected from the group consisting of hydrogen and a substituent and R is selected from the group consisting of hydrogen a pharmaceutically acceptable salt and a pharmaceutically acceptable ester.
- 2. A compound of claim 1 wherein X is hydrogen.
- 3. A compound of claim 2 wherein R is selected from the group consisting of 3-phthalidyl and an alkyl bonylmethylene optionally substituted on the methylene group by one or two ethyls and the alkyl contains 1 to 5 carbon atoms.
- 4. A compound of claim 2 wherein R is selected from the group consisting of hydrogen, 3-phthalidyl and pivaloyloxymethyl.
- 5. A compound of claim 1 which is 6-diazo-penicillanic acid-1,1-dioxide and salts thereof.
- 6. A compound of claim 5 wherein R is sodium or potassium.
- 7. A compound of claim 1 which is pivaloyloxymethyl 6-diazo-penicillanate-1,1-dioxide.
PRIOR APPLICATION
This application is a continuation of U.S. patent application Ser. No. 540,473 filed Jun. 19, 1990, now abandoned, which is a continuation of U.S. patent application Ser. No. 887,363 filed Jul. 17, 1986, now abandoned which is a division of U.S. patent application Ser. No. 486,981 filed Apr. 19, 1983, now U.S. Pat. No. 4,619,786.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
4071529 |
Christensen et al. |
Jan 1978 |
|
4419284 |
Crawford et al. |
Dec 1983 |
|
4422971 |
Akkaloom et al. |
Dec 1983 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
486981 |
Apr 1983 |
|
Continuations (2)
|
Number |
Date |
Country |
Parent |
540473 |
Jun 1990 |
|
Parent |
887363 |
Jul 1986 |
|