- PHARMACEUTICAL COMPOUNDS
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This invention relates to compounds that inhibit or modulate the activity of Chk-1 kinase. Also provided are pharmaceutical compositions containing the compounds and the therapeutic uses of the compounds.
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Page/Page column 94; 152
(2015/09/23)
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- Tocolytic oxytocin receptor antagonists
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This invention relates to certain novel benzoxazinone compounds and derivatives thereof, their synthesis, and their use as oxytocin receptor antagonists. One application of these compounds is in the treatment of preterm labor in mammals, especially humans. The ability of the compounds to relax uterine contractions in mammals also makes them useful for treating dysmenorrhea and stopping labor prior to cesarean delivery.
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- Development of orally active oxytocin antagonists: Studies on 1-(1-{4- [1-(2-methyl-1-oxidopyridin-3-ylmethyl)piperidin-4-yloxy].2methoxybenzoyl}- 4-yl)-1,4-dihydrobenz[d][1,3]oxazin-2-one (L-372,662) and related pyridines
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The previously reported oxytocin antagonist L-371,257 (2) has been modified at its acetylpiperidine terminus to incorporate various pyridine N- oxide groups. This modification has led to the identification of compounds with improved pharmacokinetics and excellent oral bioavailability. The pyridine N-oxide series is exemplified by L-372,662 (30), which possessed good potency in vitro (Ki = 4.1 nM, cloned human oxytocin receptor) and in vivo (intravenous AD50 = 0.71 mg/kg in the rat), excellent oral bioavailability (90% in the rat, 96% in the dog), good aqueous solubility (>8.5 mg/mL at pH 5.2) which should facilitate formulation for iv administration, and excellent selectivity against the human arginine vasopressin receptors. Incorporation of a 5-fluoro substituent on the central benzoyl ring of this class of oxytocin antagonists enhanced in vitro and in vivo potency but was detrimental to the pharmacokinetic profiles of these compounds. Although lipophilic substitution around the pyridine ring of compound 30 gave higher affinity in vitro, such substituents were a metabolic liability and caused shortfalls in vivo. Two approaches to prevent this metabolism, addition of a cyclic constraint and incorporation of trifluoromethyl groups, were examined. The former approach was ineffective because of metabolic hydroxylation on the constrained ring system, whereas the latter showed improvement in plasma pharmacokinetics in some cases.
- Bell, Ian M.,Erb, Jill M.,Freidinger, Roger M.,Gallicchio, Steven N.,Guare, James P.,Guidotti, Maribeth T.,Halpin, Rita A.,Hobbs, Doug W.,Homnick, Carl F.,Kuo, Michelle S.,Lis, Edward V.,Mathre, David J.,Michelson, Stuart R.,Pawluczy, Joseph M.,Pettibone, Douglas J.,Reiss, Duane R.,Vickers, Stanley,Williams, Peter D.,Woyden, Carla J.
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p. 2146 - 2163
(2007/10/03)
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- Tocolytic oxytocin receptor antagonists
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Compounds of the formula X--Y--R, or the pharmaceutically acceptable salts and esters thereof, wherein X is STR1 Y is --SO2 --, --(CH2)p -- or --CO--(CH2)p --; R is unsubstituted or substituted phenyl where said substitutents are one or more of R5, R6 or R7 ; R1 is hydrogen, cyano, phenyl,--CONHR2, --CONR2 R2, --(CH2)m --OR2, --(CH2)p --S(O)r --R2, --(CH2)m --CO2 R2, --(CH2)m --N3, --(CH2)m --NH2 or --(CH2)m --NR2 R2 ; R2 is hydrogen, C3-8 cycloalkyl or C1-5 alkyl; R5 and R6 are each independently selected from hydrogen, C1-5 alkoxy, halogen or --(CH2)n --N(R2)--C(O)--R18 ; R7 is hydrogen or STR2 R11 is selected from hydrogen, C1-5 alkylcarbonyl, STR3 or substituted C1-5 alkyl wherein said alkyl substituent is unsubstituted, mono-, di- or tri-substituted pyridyl wherein said substitutents on said pyridyl are independently selected from halogen, C1-5 alkyl or C1-5 alkoxyl; R13 is unsubstituted or substituted C1-10 alkyl wherein the substituent is selected from --N(R2)2, --NHR2 or imidazolyl; R14 and R15 are each independently selected from C1-5 alkyl, C1-5 alkoxy or halogen; R16 is hydrogen or oxo; R18 is C1-5 alkoxyl, unsubstituted or substituted C1-5 alkyl where said substituent is Het, unsubstituted or substituted C2-5 alkenyl where said subsituent is Het or Het; Het is benzimidazolyl, carboxymethyl-substituted benzimidazolyl or indolyl; m is an integer of from 1 to 5; p is an integer of from 1 to 3; and r is an integer of from 0 to 2. Such compounds as useful as oxytocin and vasopressin receptor antagonists.
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