76093-31-7Relevant articles and documents
Process for the preparation of dihydropyridinecarboxylic acids
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, (2008/06/13)
The invention relates to a process for the preparation of optically pure 1,4-dihydropyridinemonocarboxylic acids of the formula I STR1 in which the substituents have the meanings mentioned in the description.
Antihypertensive dihydropyridine derivatives
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, (2008/06/13)
Compound of formula 1 are calcium entry antagonists useful for treating hypertension, congestive heart failure, angina, and vasospastic disorders: STR1 wherein n is an integer from 1 to 4; R1 and R2 are lower alkyl; R3 is lower alkyl or alkoxyalkyl; A is alkylene of two to eight carbon atoms; X1 and X2 are each independently --NO2, --CF3, CH3 O--, --CN, --H, lower alkyl or halo; Y is --O--, --S--, --S(O)--, or --S(O)2 --; and R is H, lower alkyl, cycloalkyl, alkoxyalkyl, cycloalkyloxy-alkyl, alkoxycycloalkyl, acyl, or saturated or unsaturated 5- or 6-membered heterocyclyl optionally substituted with lower alkyl or alkoxy, wherein the heteroatom is one oxygen atom.