Claims
- 1. A compound represented by the formula: ##STR38## wherein X represents hydrogen or CO.sub.2 R.sup.1 (in which R.sup.1 represents hydrogen, a straight-chain or branched alkyl having 1 to 4 carbon atoms, allyl, or benzyl); and ##STR39##
- 2. A compound according to claim 1, wherein X represents CO.sub.2 R.sup.1.
- 3. A compound according to claim 2, wherein R.sup.1 represents a straight-chain or branched alkyl having 1 to 3 carbon atoms.
- 4. A compound according to claim 3, wherein R.sup.1 represents methyl.
- 5. A pharmaceutical composition comprising a pharmaceutical carrier and, as an active ingredient, the derivative as defined by claim 1.
Priority Claims (1)
Number |
Date |
Country |
Kind |
1-171605 |
Jul 1989 |
JPX |
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Parent Case Info
This application is a division of application Ser. No. 545,579, filed Jun. 29, 1990, now U.S. Pat. No. 5,070,092, issued Dec. 3, 1991.
US Referenced Citations (3)
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Name |
Date |
Kind |
4169888 |
Hanka et al. |
Oct 1979 |
|
4912227 |
Kelley et al. |
Mar 1990 |
|
5070092 |
Kanada et al. |
Dec 1991 |
|
Foreign Referenced Citations (6)
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0154445 |
Sep 1985 |
EPX |
0271581 |
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EPX |
0318056 |
May 1989 |
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WOX |
Divisions (1)
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Number |
Date |
Country |
Parent |
545579 |
Jun 1990 |
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