3-Chloro-5-(3-pyridin-2-ylethynyl-cyclohex-2-enyloxy)-pyridine

2-Methyl-6-(phenylethynyl)pyridine

2-{[3-(pyridin-3-yloxy)cyclohex-1-en-1-yl]ethynyl}pyridine

2-[1-(4-Bromo-benzenesulfonyl)-1,2,3,6-tetrahydro-pyridin-4-ylethynyl]-pyridine

2-Cyclohex-1-enylethynyl-pyridine

4-Pyridin-2-ylethynyl-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester

2-Cyclopent-1-enylethynyl-pyridine

2-methyl-4-(pyridin-3-ylethynyl)thiazole

3-Amino-6-chloro-pyrazine-2-carboxylic acid (6-methyl-pyridin-2-yl)-amide

2-Methyl-4-phenylethynyl-thiazole

3-Hydroxy-6-methyl-pyridine-2-carboxylic acid (6-methyl-pyridin-2-yl)-amide

2-[1-(Toluene-4-sulfonyl)-1,2,3,6-tetrahydro-pyridin-4-ylethynyl]-pyridine

3-Amino-6-methyl-pyrazine-2-carboxylic acid (6-methyl-pyridin-2-yl)-amide

2-[1-(Toluene-3-sulfonyl)-1,2,3,6-tetrahydro-pyridin-4-ylethynyl]-pyridine

N-[3-(2-pyridin-2-ylethynyl)cyclohex-2-en-1-yl]pyridin-3-amine

6-Methyl-3-(pyridin-3-ylamino)-pyridine-2-carboxylic acid (6-methyl-pyridin-2-yl)-amide

3-Amino-6-chloro-pyrazine-2-carboxylic acid pyridin-2-ylamide

4-Pyridin-2-ylethynyl-3,6-dihydro-2H-pyridine-1-carboxylic acid benzyl ester

(5-Ethoxy-[3,3']bipyridinyl-6-yl)-(6-methyl-pyridin-2-yl)-amine

3-Amino-6-bromo-pyrazine-2-carboxylic acid pyridin-2-ylamide

N-[4-(2-pyridin-2-ylethynyl)cyclohex-3-en-1-yl]pyridin-3-amine

4-Methyl-2-phenylethynyl-thiazole

2-{[3-(pyridin-4-yloxy)cyclohex-1-en-1-yl]ethynyl}pyridine

(5-Chloro-3-ethoxy-pyridin-2-yl)-(6-methyl-pyridin-2-yl)-amine

3-ethoxy-N-(6-methylpyridin-2-yl)-5-pyridin-3-yloxypyridin-2-amine

6-Bromo-pyridine-2-carboxylic acid (6-methyl-pyridin-2-yl)-amide

2-{[3-(pyridin-4-ylthio)cyclohex-1-en-1-yl]ethynyl}pyridine

3-Amino-6-methyl-pyridine-2-carboxylic acid (6-methyl-pyridin-2-yl)-amide

3-Amino-6-chloro-5-isopropylamino-pyrazine-2-carboxylic acid pyridin-2-ylamide

2-[3-(2-pyridin-2-ylethynyl)cyclohex-2-en-1-yl]isoindole-1,3-dione

3-Amino-6-methyl-pyrazine-2-carboxylic acid pyridin-2-ylamide

6-Methyl-pyridine-2-carboxylic acid (6-methyl-pyridin-2-yl)-amide

4-Pyridin-2-ylethynyl-3,6-dihydro-2H-pyridine-1-carboxylic acid phenyl ester

(3-Ethoxy-5-pyrimidin-5-yl-pyridin-2-yl)-(6-methyl-pyridin-2-yl)-amine

2-[5-Ethoxy-6-(6-methyl-pyridin-2-ylamino)-pyridin-3-yl]-benzonitrile

(3-Ethoxy-pyridin-2-yl)-(6-methyl-pyridin-2-yl)-amine

(5-Ethoxy-4'-methyl-[3,3']bipyridinyl-6-yl)-(6-methyl-pyridin-2-yl)-amine

5-Ethoxy-6-(6-methyl-pyridin-2-ylamino)-nicotinonitrile

(5-Bromo-3-ethoxy-pyridin-2-yl)-(6-methyl-pyridin-2-yl)-amine

2-(2-Methyl-thiazol-4-ylethynyl)-pyridine

2-(1-Phenylmethanesulfonyl-1,2,3,6-tetrahydro-pyridin-4-ylethynyl)-pyridine

5'-Ethoxy-6'-(6-methyl-pyridin-2-ylamino)-[3,3']bipyridinyl-2-carbonitrile

2-Phenylethynyl-thiazole

4-Phenylethynyl-thiazole

3-Amino-6-chloro-5-piperidin-1-yl-pyrazine-2-carboxylic acid pyridin-2-ylamide

2-Hydroxy-5-methyl-N-(6-methyl-pyridin-2-yl)-benzamide

2-Cyclohexylethynyl-pyridine

(3-Ethoxy-5-methyl-pyridin-2-yl)-(6-methyl-pyridin-2-yl)-amine

4-(2-Methyl-thiazol-4-ylethynyl)-pyridine

3-ethoxy-5-(3-fluorophenyl)-N-(6-methylpyridin-2-yl)pyridin-2-amine

3-Amino-6-chloro-5-dimethylamino-pyrazine-2-carboxylic acid pyridin-2-ylamide

(3-Ethoxy-pyridin-2-yl)-pyridin-2-yl-amine

6-Chloro-3-methylamino-pyrazine-2-carboxylic acid pyridin-2-ylamide

6-Chloro-5-dimethylamino-pyrazine-2-carboxylic acid pyridin-2-ylamide

4-[3-(2-pyridin-2-ylethynyl)cyclohex-2-en-1-yl]morpholine

6-Methyl-pyrazine-2-carboxylic acid pyridin-2-ylamide

(5'-Ethoxy-[2,3']bipyridinyl-6'-yl)-(6-methyl-pyridin-2-yl)-amine

2-[3-(Naphthalen-2-ylsulfanyl)-cyclohex-1-enylethynyl]-pyridine

(3-Ethoxy-5-isothiazol-3-yl-pyridin-2-yl)-(6-methyl-pyridin-2-yl)-amine

6-Chloro-pyrazine-2-carboxylic acid pyridin-2-ylamide

(3-Ethoxy-5-phenyl-pyridin-2-yl)-(6-methyl-pyridin-2-yl)-amine

N-[4-(2-pyridin-2-ylethynyl)cyclohex-3-en-1-yl]naphthalen-2-amine

(6-Methyl-pyridin-2-yl)-(3-propyl-pyridin-2-yl)-amine

(3-Methoxy-pyridin-2-yl)-(6-methyl-pyridin-2-yl)-amine

(3-Ethoxy-pyrazin-2-yl)-(6-methyl-pyridin-2-yl)-amine

(3-Ethoxy-5-p-tolyl-pyridin-2-yl)-(6-methyl-pyridin-2-yl)-amine

(3-Ethoxy-pyridin-2-yl)-(6-methoxy-pyridin-2-yl)-amine

2-(1,2,3,6-Tetrahydro-pyridin-4-ylethynyl)-pyridine

(6-Methyl-pyridin-2-yl)-(3-methylsulfanyl-pyridin-2-yl)-amine

(3-Benzyloxy-pyridin-2-yl)-(6-methyl-pyridin-2-yl)-amine

N-cyclopentyl-4-(2-pyridin-2-ylethynyl)cyclohex-3-en-1-amine

(3-Isopropoxy-pyridin-2-yl)-(6-methyl-pyridin-2-yl)-amine

(6-Methyl-pyridin-2-yl)-(3-propoxy-pyridin-2-yl)-amine

(3-Ethoxy-pyridin-2-yl)-(6-trifluoromethyl-pyridin-2-yl)-amine

(3-Ethoxy-4-methyl-pyridin-2-yl)-(6-methyl-pyridin-2-yl)-amine

3-N-ethyl-2-N-(6-methylpyridin-2-yl)pyridine-2,3-diamine

3-Amino-pyrazine-2-carboxylic acid pyridin-2-ylamide

3,5-Diamino-6-chloro-pyrazine-2-carboxylic acid pyridin-2-ylamide

3-Amino-5-dimethylamino-pyrazine-2-carboxylic acid pyridin-2-ylamide

6-(3-Ethoxy-pyridin-2-ylamino)-pyridine-2-carboxylic acid methyl ester