Claims
- 1. A compound of the formula ##STR30## wherein R.sub.4 is hydrogen, lower alkyl, carboxy or carboxy protected with a conventional group convertible thereto by hydrolysis; R'.sub.30 is selected from the group consisting of -CHO, -CH=NH, -C.tbd.N, -CH=NOH, -CH.sub.2 NHX, -CH.sub.2 NH.sub.2 and -CH.sub.2 NO.sub.2; and X is chlorine or bromine;
- or enantiomers, racemates or salts thereof.
- 2. The compound of claim 1 wherein said compound is 3,3a beta-4,5,6,6a beta-hexahydro-4.beta.-nitromethyl-2-oxo-2H-cyclopenta [b]furan-5.alpha.-carboxylic acid methyl ester.
- 3. The compound of claim 1 wherein said compound is 3,3a beta-4,5,6,6a beta-hexahydro-4.beta.-carboxaldehyde-2-oxo-2H-cyclopenta[b]furan-5.alpha.-carboxylic acid methyl ester.
- 4. The compound of claim 1 wherein said compound is 3,3a beta-4,5,6,6a beta-hexahydro-4.beta.-aminomethyl-2-oxo-2H-cyclopenta [b]furan-5.alpha.-carboxylic acid methyl ester.
- 5. The compound of claim 1 wherein said compound is 3,3a beta-4,5,6,6a beta-hexahydro-4.beta.-chloroaminoethyl-2-oxo-2H-cyclopenta[b]furan-5.alpha.-carboxylic acid methyl ester.
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a divisional of our copending application Ser. No. 381,322, filed July 20, 1973, now abandoned, which is a continuation-in-part of Ser. No. 300,633, filed Nov. 25, 1972, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3931234 |
Jernow et al. |
Jan 1976 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
381322 |
Jul 1973 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
300633 |
Nov 1972 |
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