| Number | Date | Country | Kind |
|---|---|---|---|
| 2-251897 | Sep 1990 | JPX | |
| 3-091477 | Mar 1991 | JPX |
| Number | Name | Date | Kind |
|---|---|---|---|
| 3925387 | Maruyama et al. | Dec 1975 | |
| 4623662 | DeVries | Nov 1986 | |
| 4824843 | Hoefle et al. | Apr 1989 |
| Number | Date | Country |
|---|---|---|
| 0245687 | Nov 1987 | EPX |
| 0283742 | Sep 1988 | EPX |
| 0344425 | Dec 1989 | EPX |
| 0354994 | Feb 1990 | EPX |
| 0418071 | Mar 1991 | EPX |
| 0561175 | Sep 1993 | EPX |
| 0559898 | Sep 1993 | EPX |
| 2162168 | Jul 1973 | FRX |
| 2259004 | Jun 1973 | DEX |
| 2056968 | Mar 1981 | GBX |
| 2113684 | Aug 1983 | GBX |
| Entry |
|---|
| CA 77:88820, 1972. |
| Cross et al., J. Med. Chem. 28, 1427-1432, 1985. |
| Database WPI, Derwent Publications Ltd., London, GB AN 81-38689D & GB-A-2 062 622 (American Cyanamid Co., Week 8122, 1981. |
| Chemical Abstracts, No. 117176d, vol. 119, No. 11, Sep. 13, 1993 and J. Med. Chem., vol. 36, No. 11, 1993 (pp. 1630-1640). |
| J. Med. Chem., vol. 21, No. 10, 1989 (pp. 2318-2325). |