Chiral 1,4-dihydropyridine equivalents: a new approach to the asymmetric synthesis of alkaloids. The enantiospecific synthesis of (+)- and (-)-coniine and dihydropinidine
Chiral 1,4-dihydropyridine equivalents: a new approach to the asymmetric synthesis of alkaloids. The enantiospecific synthesis of (+)- and (-)-coniine and dihydropinidine
The invention relates to the compounds of general formula ##STR1## in which R.sub.1, R.sub.2, R.sub.4, R.sub.5 and A are as defined in the description. their isomers, diastereoisomers, and enantiomers as well as their addition salts with a pharmaceutically acceptable inorganic or organic acid, and medicinal products containing the same which are usable for the treatment of psycho-behavioral disorders.