Furo-(3,4-c)-pyridine derivatives and their pharmaceutical use

Details Furo-(3,4-c)-pyridine derivatives and their pharmaceutical use Furo-(3,4-c)-pyridine derivatives and their pharmaceutical use

1982-01-08

1983-05-17

Jiles, Henry R.

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Bacterium or component thereof or substance produced by said...

546116, A61K 31435, C07D491048

Patent

active

043839983

ABSTRACT:
This invention relates to new 1,3-dihydro-6-methyl-7-hydroxy-furo-(3,4-c)-pyridine derivatives of the general formula ##STR1## wherein A< represents a group of the formula --(CH.sub.2).sub.n --, n being an integer of from 1 to 5, or a homocyclic or heterocyclic group, and R represents a hydrogen, chlorine or fluorine atom, a trifluoromethyl group, an alkyl group having from 1 to 5 carbon atoms, an alkoxy group having from 1 to 5 carbon atoms, a alkylthio group having from 1 to 5 carbon atoms, a dialkylaminoalkoxy group in which the alkyl groups each have from 1 to 5 carbon atoms and the alkoxy group has from 1 to 5 carbon atoms or a N-pyrolidinyl-alkoxy group in which the alkoxy group has from 1 to 5 carbon atoms to a process for the preparation of the same by refluxing .alpha..sup.4, 3-o-isopropylidene-pyridoxal with a compound of the general formula X-A-R, wherein X represents a bromine or iodine atom, in the presence of magnesium in diethyl ether, and acidifying the resultant corresponding secondary alcohol .alpha..sup.4, 3-o-isopropylidene-.alpha.-hydroxy-5-substituted-pyridoxine to break the isopropylidene ring and promote a 3,4 cyclization; and to therapeutical compositions of matter comprising as an essential ingredient therein an effective amount of one of these compounds.

REFERENCES:
patent: 4221795 (1980-09-01), Beguin
Chemical Abstracts 5555f vol. 41 (1947).

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