Patent ID: 8106062

Claim:
A method for inhibiting calcium T-channel activity, comprising the steps of: providing a selective T-channel antagonist having an onset of activity in reducing systolic blood pressure in vivo of at least three hours and a duration of activity in vivo of at least 24 hours, wherein onset of activity refers to the time from administration to maximum reduction of systolic blood pressure, and duration of activity refers to the time from administration until the amount of systolic blood pressure reduction decreases by at least 20 percent; and administering the antagonist to a mammal in regular doses no more often than once per day, wherein the T-channel antagonist is a compound of Formula I: or a pharmaceutically acceptable salt, amide, ester, or prodrug thereof, wherein a) R 1 -R 8 are each independently selected from the group consisting of hydrogen, halogen, perhaloalkyl, nitro, amino, a diazo salt, optionally substituted lower alkyl, optionally substituted lower alkylene and optionally substituted five-membered or optionally substituted six-membered heteroaryl ring or optionally substituted six-membered aryl or heteroaryl ring, where the lower alkyl and the lower alkylene moieties are each independently and optionally substituted with one or more substituents selected from the group consisting of halogen, perhaloalkyl, nitro, amino, hydroxy, alkoxy, sulfhydryl, thioether, cyano, amido, ester, and where A is selected from the group consisting of oxygen, sulfur, and —NH and R 11 is selected for the group consisting of hydrogen, hydroxy, alkoxy, haloalkoxy, halogen, haloalkyl, perhaloalkyl, nitro, amino, and a diazo salt, and n is between 0-4; and where the ring moieties are each independently and optionally substituted with one or more substituents selected from the group consisting of lower alkyl, lower alkylene, b) R 9 is selected from the group consisting of hydrogen, alkyl, alkylene, and a five-membered or six-membered heteroaryl ring or a six-membered aryl or heteroaryl ring, optionally substituted with one or more substituents selected from the group consisting of lower alkyl, lower alkylene, halogen, perhaloalkyl, nitro, amino, cyano, amido, and ester; c) R 10 is selected from the group consisting of hydrogen and lower alkyl, or R 10 is optionally not present, in which case the nitrogen-containing ring in the compound of Formula I is pyridine.