Chemistry and hypoglycemic activity of N-[[(dialkylamino)alkoxy]phenyl]benzamidines
摘要:
A series of N-[[(dialkylamino)alkoxyl]phenyl]benzamidines was synthesized and evaluated for hypoglycemic activity in the glucose-primed rat. Structure-activity relationship indicated that N'-phenyl-N-[4-[2(diisopropylamino)-ethoxy]phenyl]benzamidine dihydrobromide (7), N'-(4-chlorophenyl)-N-[4-[2-(diisopropylamino)ethoxy]phenyl]-benzamidine dihydrochloride (31), and N'-phenyl-N-[4-[(diisopropylamino)propoxy]phenyl]benzamidine dihydrobromide (11) are some of the more interesting compounds. A comparison of these hypoglycemic agents with classical standards (tolazamide, phenformin, and buformin) in several experimental models showed that the benzamidines seem to combine in one molecule some of the biological activities of the beta-cytotrophic sulfonylureas and some of the activities of the biguanides.
Synthesis and Activity against Multidrug Resistance in Chinese Hamster Ovary Cells of New Acridone-4-carboxamides
摘要:
A number of tricyclic carboxamides have been synthesized and tested to evaluate their ability to reverse multidrug resistance in the (CHC)-C-R/5 cell line. Among them the acridone derivatives were the most potent, A key feature is the presence of a dimethoxybenzyl or phenethylamine cationic site, separated from the tricyclic lipophilic part by a carbamoylphenyl chain. Optimization led to compounds 2 orders of magnitude more active than the prototype inhibitors verapamil and amiodarone. On the basis of in vitro and in vivo activities, 9,10-dihydro-5-methoxy- 9-oxo-N-[4-[2-(1,2,3,4-tetrahydro-6,7-dimethoxyisoquinol-2-yl)ethyl]phenyl]-4-acridinecarboxamide (84) has been selected for further development.