Asymmetric synthesis of furo(3,4-c) pyridine derivatives

Details Asymmetric synthesis of furo(3,4-c) pyridine derivatives Asymmetric synthesis of furo(3,4-c) pyridine derivatives

1990-07-26

1991-08-27

Dentz, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

435119, C07D491048

Patent

active

050434489

ABSTRACT:
The invention relates to a method for the preparation of a non-racemic furo [3,4-c] pyridine derivatives of the formula I ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 stand for various substitutents, comprising adding a concentrated strong acid to a solution of a non-racemic compound of the formula II ##STR2## in an amount sufficient to catalyze a deprotection/cyclodehydration. These compounds are known antihypertensives.

REFERENCES:
patent: 4383998 (1983-05-01), Esanu
Schoeffter et al., Eur. J. of Pharmacology, 136, pp. 235-237 (1987).

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