a series of 1 , n-alkanediylbis ( 1,4-dihydropyridines ) ( n = 2 , 4 , 6 , 8 , 10 , 12 ) bridged at c3 of 2,6-dimethyl-3-carboxy-5-carbethoxy-4- ( 3-nitrophenyl ) -1,4-dihydropyridin e were synthesized and evaluated in a radioligand binding assay , [ 3h ] nitrendipine in intestinal smooth muscle , as ca2+ channel ligands .
C0012315
dihydropyridines
C0028127
nitrendipine