Claims
- 1. A process for the preparation of a compound of formula (I) ##STR23## wherein A represents a group --E--G, where
- E is a group --CH.sub.2 --R--,
- R is a straight or branched alkylene radical of from 1 to 3 carbon atoms,
- G represents a radical selected from the group consisting of naphthyl mono-substituted with hydroxy or (C.sub.1 -C.sub.4) alkoxy; naphthyl di-substituted with hydroxy, (C.sub.1 -C.sub.4) alkoxy or (C.sub.1 -C.sub.4) alkyl; or naphthyl substituted with methylenedioxy, or one of its addition salts with mineral or organic acids, which comprises reducing the corresponding compound of formula (V) ##STR24## wherein --R-- and --G are as defined above; said process being further characterized in that
- when a compound of formula (I) is obtained as the free base, it may be converted into an addition salt thereof,
- when a compound of formula (I) is obtained as addition salt, it may be converted into the corresponding free base or into another addition salt,
- when the compound of formula (I) is obtained wherein A represents a group --E--G wherein
- G represents naphthyl substituted with one or two methoxy groups it may be converted into the corresponding compound wherein --G represents naphthyl substituted with one or two hydroxy groups by demethylation.
- 2. A process according to claim 1, for the preparation of a compound of formula (I), wherein A represents a group --E--G where E is --CH.sub.2 --CH.sub.2 -- and G is a naphthyl group substituted in the 6 and 7 positions by a methoxy group.
Priority Claims (1)
Number |
Date |
Country |
Kind |
90 06474 |
May 1990 |
FRX |
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Parent Case Info
This application is a division of application Ser. No. 08/141,066, filed Oct. 26, 1993, now U.S. Pat. No. 5,462,945; which is a continuation of application Ser. No. 07/705,704, filed May 23, 1991 (now U.S. Pat. No. 5,281,606; issued Jan. 25, 1994).
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EPX |
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GBX |
Non-Patent Literature Citations (1)
Entry |
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Divisions (1)
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Number |
Date |
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Parent |
141066 |
Oct 1993 |
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Continuations (1)
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Number |
Date |
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Parent |
705704 |
May 1991 |
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