| abstract |
A procedure for the preparation of new 3-cyanopyridine derivatives of the formula: **(See formula)** where R is isopropyl or tert-butyl and pharmaceutically acceptable acid addition salts thereof, the process of which consists of: a) hydrolyze a compound of formula: **(See formula)** and its pharmaceutically acceptable acid addition salts, the process of which is to hydrolyze a compound of the formula: **(See formula)** where R is isopropyl or tert-butyl and R1 is hydrogen or an aldehyde moiety. b) if desired, prepare said salts of (I) by treating the product obtained in the previous step with a pharmaceutically acceptable acid, using the portions of reagents that are suitable. (Machine-translation by Google Translate, not legally binding) |