dl-N-methyl-3-(o-methoxyphenoxy)-3-phenylpropylamine hydrochloride, Lilly 94939, a potent inhibitor for uptake of norepinephrine into rat brain synaptosomes and heart. |
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Authors: | D T Wong J S Horng F P Bymaster |
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Institution: | Lilly Research Laboratories, Eli Lilly and Company Indianapolis, Indiana 46206, USA |
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Abstract: | dl-N-Methyl-3-(o-methoxyphenoxy)-3-phenylpropylamine hydrochloride, Lilly 94949, is a potent inhibitor for uptake of norepinephrine (NE) into synaptosomes of rat brain with inhibitor constant (Ki) value of 1.8 × 10−7M. Lilly 94939 profoundly reduces the accumulation of radioactivity from labeled NE in heart with ED50 value of 1.5 mg/kg i.p. The inhibitory effects of the compound in synaptosomes and heart are most profound within 15 min of an intraperitoneal injection of Lilly 94939 at 10 mg/kg but much deminished at the 4th hr. These properties are in great contrast with its trifluoromethyl analog, Lilly 110140, which has previously been reported as a selective inhibitor of serotonin uptake in synaptosomes and without any effect on the accumulation of radioactivity from labeled NE in heart. |
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