Fused bicycloheterocycle substituted quinuclidine derivatives
View Patent ↗Compounds of formula (II): known as: 5-{6-[(3R)-1-azabicyclo[2.2.2]oct-3-yloxy]pyridazin-3-yl}-1-H-indole salt with (2R, 3R)-2,3-dihydroxybutanedioic acid (1:1).
1. A compound of the formula (II):
wherein the compound has the following X-ray diffraction pattern parameters: space group is P2 1 , a is about 7.722(7) Å, b is about 9.407(8) Å, c is about 14.32(1) Å, and volume is about 1035(2) Å 3 .
2. A method of preparing the compound of claim 1 , comprising the following steps:
a. dissolving a free base of 3-[6-(1H-indol-5-yl)-pyridazin-3-yloxy]-1-aza-bicyclo[2.2.2]octane in methanol; and
b. adding the product of step (a) to a solution of L-tartaric acid in methanol at a temperature between about 20° C. and about 64° C.
3. A method of preparing the compound of claim 1 , comprising the following steps:
a. dissolving a free base of 3-[6-(1H-indol-5-yl)-pyridazin-3-yloxy]-1-aza-bicyclo[2.2.2]octane in methanol; and
b. adding L-tartaric acid in methanol to the product of step (a), at a temperature between about 20° C. and about 64° C.
4. The method of claim 2 , where the temperature at the step (b) is between about 40° C. and about 60° C.
5. The method of claim 3 , where the temperature at the step (b) is between about 40° C. and about 60° C.