Claims
- 1. A synthesis intermediate compound for the preparation of a compound having the formula: ##STR13## said synthesis intermediate compound having the formula (IX): ##STR14## in which X is oxygen or a group N.dbd.R,
- Z is an electron attracting group,
- R is a hydrogen atom, a nitro or a cyano group,
- Alk is a methyl or an ethyl, and
- R.sub.1 and R.sub.2 form a 5-membered or 6-membered heterocycle with the group --N--CX-- to which they are bonded.
- R.sub.3 is hydrogen and R.sub.4 is an hydroxyl group or R.sub.3 and R.sub.4 together form a bond,
- R.sub.5 is hydrogen, a bromine atom or a group N(R.sub.1)CXR.sub.2,
- provided that Z is other than a chlorine atom when R.sub.5 is hydrogen and Alk is an ethyl group.
- 2. A compound of formula (IX) according to claim 1 in which Z is a cyano group and R.sub.5 is hydrogen, a bromine atom or a 1,2-dihydro-2-oxopyrid-1-yl group.
Priority Claims (1)
Number |
Date |
Country |
Kind |
88 17194 |
Dec 1988 |
FRX |
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Parent Case Info
This application is a division of application Ser. No. 07/456,491, filed Dec. 26, 1989, now U.S. Pat. No. 5,071,991.
Foreign Referenced Citations (2)
Number |
Date |
Country |
8268987 |
Dec 1986 |
AUX |
0273262 |
Jul 1988 |
EPX |
Non-Patent Literature Citations (3)
Entry |
CA 113:23696x Preparation of . . . agents. Haeusler et al. p. 640, Jun. 1988. |
CA 114:61929d Preparation of . . . analogs, Garcia et al. p. 673, Dec. 1988. |
Hogberg et al., acta. Pharm. Suec., 13, 427-438 (1976). |
Divisions (1)
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Number |
Date |
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Parent |
456491 |
Dec 1989 |
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