Claims
- 1. A compound of formula ##STR13## in which R.sub.4 represents hydrogen, lower alkyl, phenyl or phenyl substituted by X'; and Y.sub.1 represent, independently of the other, hydroxy, halogen, lower alkoxy, tri-lower alkylsilyloxy, lower alkanesulphonyloxy, benzene-sulphonyloxy or p-toluenesulphonyloxy; or Y.sub.1 and Y.sub.2 together represent -O-; and X' represents a nitro, nitroso, hydroxyamino or azido group, halogen, carbamoyl, azidocarbonyl or a protected amino group; or a salt thereof.
- 2. A compound according to claim 1 of the formula VII, in which R.sub.4 represents hydrogen, lower alkyl, phenyl or phenyl substituted by X'; and Y.sub.1 and Y.sub.2 represent, independently of the other, hydroxy, halogen, lower alkoxy, trilower alkylsilyloxy, lower alkanesulphonyloxy, benzenesulphonyloxy or p-toluenesulphonyloxy; or Y.sub.1 and Y.sub.2 together represent -O-; and X' represents nitro; or a salt thereof.
- 3. A compound according to claim 1 of the formula VII, in which R.sub.4 represents hydrogen, Y.sub.1 and Y.sub.2 represent hydroxy, halogen or lower alkoxy, X' represents nitro; or a salt thereof.
- 4. cis-1-(4-Nitrophenyl)-1,3-cyclobutanedicarboxylic acid according to claim 1.
- 5. cis-3-Methyl-1-(4-nitrophenyl)-1,3-cyclobutanedicarboxylic acid according to claim 1.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2987/84 |
Jun 1984 |
CHX |
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Parent Case Info
This application is a division of Ser. No. 032,656, filed Apr. 1, 1987, now U.S. Pat. No. 4,764,640, which is a divisional of Ser. No. 746,814 filed June 20, 1985, now U.S. Pat. No. 4,677,129.
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Entry |
Alder et al, Helvetica Chimica Acta vol. 65, pp. 2405-2412 (1982). |
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Divisions (2)
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Number |
Date |
Country |
Parent |
32656 |
Apr 1987 |
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Parent |
746814 |
Jun 1985 |
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