Methods for preparing triazole agonists of the APJ receptor

Patent metadata

Field	Value
Publication number	US-9751864-B2
Application number	US-201615298434-A
Country	US
Kind code	B2
Filing date	Oct 20, 2016
Priority date	May 20, 2015
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

Methods of preparing compounds of Formula VI, salts thereof, tautomers thereof, or salts of the tautomers include cyclizing compounds of Formula V, salts thereof, tautomers thereof, or salts of the tautomers. Compounds of Formula VI and Formula V have the following structures:

where the definitions of the variables are provided herein.

First claim

What is claimed:

1. A method for preparing a compound of Formula VI, a salt thereof, a tautomer thereof, or a salt of the tautomer:

the method comprising:
a) cyclizing a compound of Formula V, a salt thereof, a tautomer thereof, or a salt of the tautomer in the presence of an acid or a base to form the compound of Formula VI, the salt thereof, the tautomer thereof, or the salt of the tautomer,

wherein:
R 1 is an unsubstituted pyridyl, pyridonyl, or pyridine N-oxide, or is a pyridyl, pyridonyl, or pyridine N-oxide substituted with 1, 2, 3, or 4 R 1a substituents;
R 1a in each instance is independently selected from —F, —Cl, —Br, —I, —CN, —C 1 -C 6 alkyl, —C 1 -C 6 haloalkyl, —C 1 -C 6 perhaloalkyl, —OH, —O—(C 1 -C 6 alkyl), —O—(C 1 -C 6 haloalkyl), —O—(C 1 -C 6 perhaloalkyl), —C 2 -C 6 alkenyl, —O—(C 1 -C 6 alkyl)-OH, —O—(C 1 -C 6 alkyl)-O—(C 1 -C 6 alkyl), —O—(C 1 -C 6 haloalkyl)-OH, —O—(C 1 -C 6 haloalkyl)-O—(C 1 -C 6 alkyl), —O—(C 1 -C 6 perhaloalkyl)-OH, —O—(C 1 -C 6 perhaloalkyl)-O—(C 1 -C 6 alkyl), —NH 2 , —NH(C 1 -C 6 alkyl), —N(C 1 -C 6 alkyl) 2 , —C(═O)—(C 1 -C 6 alkyl), —C(═O)OH, —C(═O)—O—(C 1 -C 6 alkyl), —C(═O)NH 2 , —C(═O)NH(C 1 -C 6 alkyl), —C(═O)N(C 1 -C 6 alkyl) 2 , phenyl, —C(═O)-(heterocyclyl), or a heterocyclyl group, wherein the heterocyclyl group of the —C(═O)-(heterocyclyl) or heterocyclyl group is a 3 to 7 membered ring containing 1, 2, or 3 heteroatoms selected from N, O, or S;
R 3 is selected from an unsubstituted C 1 -C 10 alkyl, a C 1 -C 10 alkyl substituted with 1, 2, or 3 R 3a substituents, a group of formula —(CR 3b R 3c )-Q, a group of formula NH—(CR 3b R 3c )-Q, a group of formula —(CR 3b R 3c )—C(═O)-Q, a group of formula —(CR 3d R 3e )—(CR 3f R 3g )-Q, a group of formula —(CR 3b ═CR 3c )-Q, or a group of formula -(heterocyclyl)-Q, wherein the heterocyclyl of the -(heterocyclyl)-Q has 5 to 7 ring members of which 1, 2, or 3 are heteroatoms selected from N, O, or S and is unsubstituted or is substituted with 1, 2, or 3 R 3h substituents;
R 3a in each instance is independently selected from —F, —Cl, —CN, —OH, —O—(C 1 -C 6 alkyl), —O—(C 1 -C 6 haloalkyl), —O—(C 1 -C 6 perhaloalkyl), —O—(C 1 -C 6 alkyl)-OH, —O—(C 1 -C 6 alkyl)-O—(C 1 -C 6 alkyl), C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, —NH 2 , —NH(C 1 -C 6 alkyl), or —N(C 1 -C 6 alkyl) 2 ;
R 3b and R 3c are independently selected from —H, —F, —Cl, —CN, —C 1 -C 6 alkyl, —C 1 -C 6 haloalkyl, —C 1 -C 6 perhaloalkyl, —OH, —O—(C 1 -C 6 alkyl), —O—(C 1 -C 6 haloalkyl), —O—(C 1 -C 6 perhaloalkyl), —O—(C 1 -C 6 alkyl)-OH, —O—(C 1 -C 6 alkyl)-O—(C 1 -C 6 alkyl), —NH 2 , —NH(C 1 -C 6 alkyl), or —N(C 1 -C 6 alkyl) 2 ;
R 3d and R 3e are independently selected from —H, —F, —Cl, —CN, —C 1 -C 6 alkyl, —C 1 -C 6 haloalkyl, —C 1 -C 6 perhaloalkyl, —OH, —O—(C 1 -C 6 alkyl), —O—(C 1 -C 6 haloalkyl), —O—(C 1 -C 6 perhaloalkyl), —O—(C 1 -C 6 alkyl)-OH, —O—(C 1 -C 6 alkyl)-O—(C 1 -C 6 alkyl), —NH 2 , —NH(C 1 -C 6 alkyl), or —N(C 1 -C 6 alkyl) 2 ;
R 3f and R 3g are independently selected from —H, —F, —Cl, —CN, —C 1 -C 6 alkyl, —C 1 -C 6 haloalkyl, —C 1 -C 6 perhaloalkyl, —OH, —O—(C 1 -C 6 alkyl), —O—(C 1 -C 6 haloalkyl), —O—(C 1 -C 6 perhaloalkyl), —O—(C 1 -C 6 alkyl)-OH, —O—(C 1 -C 6 alkyl)-O—(C 1 -C 6 alkyl), —NH 2 , —NH(C 1 -C 6 alkyl), or —N(C 1 -C 6 alkyl) 2 ;
R 3h in each instance is independently selected from —F, —Cl, —CN, —C 1 -C 6 alkyl, —C 1 -C 6 haloalkyl, —C 1 -C 6 perhaloalkyl, —OH, —O—(C 1 -C 6 alkyl), —O—(C 1 -C 6 haloalkyl), —O—(C 1 -C 6 perhaloalkyl), —O—(C 1 -C 6 alkyl)-OH, —O—(C 1 -C 6 alkyl)-O—(C 1 -C 6 alkyl), —NH 2 , —NH(C 1 -C 6 alkyl), —N(C 1 -C 6 alkyl) 2 , or oxo;
Q is a monocyclic or bicyclic C 6 -C 10 aryl group, a monocyclic or bicyclic heteroaryl group with 5 to 10 ring members containing 1, 2, or 3 heteroatoms selected from N, O, or S, a C 3 -C 8 cycloalkyl group, or a 3 to 7 membered heterocyclyl group containing 1, 2, or 3 heteroatoms selected from N, O, or S, wherein the C 6 -C 10 aryl group, the heteroaryl group, the cycloalkyl group, and the heterocyclyl group are unsubstituted or are substituted with 1, 2, 3, or 4 R Q substituent;
R Q in each instance is independently selected from —F, —Cl, —Br, —I, —CN, —C 1 -C 6 alkyl, —C 1 -C 6 haloalkyl, —C 1 -C 6 perhaloalkyl, —C 2 -C 6 alkenyl, —C 2 -C 6 alkynyl, —OH, —O—(C 1 -C 6 alkyl), —O—(C 1 -C 6 haloalkyl), —O—(C 1 -C 6 perhaloalkyl), —NH 2 , —NH(C 1 -C 6 alkyl), —N(C 1 -C 6 alkyl) 2 , —C(═O)—(C 1 -C 6 alkyl), —C(═O)OH, —C(═O)—O—(C 1 -C 6 alkyl), —C(═O)NH 2 , —C(═O)NH(C 1 -C 6 alkyl), —C(═O)N(C 1 -C 6 alkyl) 2 , —S(═O) 2 —(C 1 -C 6 alkyl), phenyl, or a heteroaryl group, and the Q heterocyclyl group may be substituted with 1 oxo substituent;
R 4 is selected from a monocyclic or bicyclic C 6 -C 10 aryl group, a monocyclic or bicyclic heteroaryl group with 5 to 10 ring members containing 1, 2, or 3 heteroatoms independently selected from N, O, or S, or a monocyclic or bicyclic heterocyclyl group with 5 to 10 ring members containing 1, 2, 3, or 4 heteroatoms independently selected from N, O, or S, wherein the C 6 -C 10 aryl group, the heteroaryl group, or the heterocyclyl group are unsubstituted or are substituted with 1, 2, or 3 R 4a substituents; and
R 4a in each instance is independently selected from —F, —Cl, —Br, —I, —CN, —C 1 -C 6 alkyl, —C 1 -C 6 haloalkyl, —C 1 -C 6 perhaloalkyl, —OH, —O—(C 1 -C 6 alkyl), —O—(C 1 -C 6 haloalkyl), —O—(C 1 -C 6 perhaloalkyl), —NH 2 , —NH(C 1 -C 6 alkyl), —N(C 1 -C 6 alkyl) 2 , —C(═O)—(C 1 -C 6 alkyl), —C(═O)OH, —C(═O)—O—(C 1 -C 6 alkyl), —C(═O)NH 2 , —C(═O)NH(C 1 -C 6 alkyl), or —C(═O)N(C 1 -C 6 alkyl) 2 , and the heterocyclyl R 4 group may be further substituted with 1 oxo substituent.

2. The method of claim 1 , wherein cyclizing further comprises heating the compound of Formula V, the salt thereof, the tautomer thereof, or the salt of the tautomer in the presence of the acid or the base.

3. The method of claim 2 , wherein heating the compound of Formula V, the salt thereof, the tautomer thereof, or the salt of the tautomer comprises heating the compound to a temperature of from 50° C. to 100° C.

4. The method of claim 2 , wherein heating the compound of Formula V, the salt thereof, the tautomer thereof, or the salt of the tautomer comprises heating the compound to a temperature of from 60° C. to 85° C.

5. The method of claim 1 , wherein the cyclizing of the compound of Formula V, the salt thereof, the tautomer thereof, or the salt of the tautomer is performed in the presence of the base.

6. The method of claim 1 , wherein the base is a metal hydroxide.

7. The method of claim 6 , wherein the metal hydroxide is selected from NaOH or LiOH.

8. The method of claim 5 , wherein the cyclizing is carried out in an alcohol solvent.

9. The method of claim 8 , wherein the alcohol is isopropanol.

10. The method of claim 1 , wherein cyclizing further comprises heating the compound of Formula V, the salt thereof, the tautomer thereof, or the salt of the tautomer in the presence of the acid.

11. The method of claim 10 , wherein the acid is selected from a sulfonic acid, a carboxylic acid, polyphosphoric acid, phosphoric acid, sulfuric acid, or hydrochloric acid.

12. The method of claim 11 , wherein the sulfonic acid is methanesulfonic acid.

13. The method of claim 11 , wherein the acid is trifluoroacetic acid, acetic acid, or trichloroacetic acid.

Assignees

• Amgen Inc

Inventors

• Chen Ning
• Chen Xiaoqi
• Connors Richard V
• Deignan Jeffrey
• Dransfield Paul John
• Du Xiaohui
• Fu Zice
• Heath Julie Anne
• Horne Daniel B
• Houze Jonathan
• Kaller Matthew R
• Kopecky David John
• Lai Su-Jen
• Ma Zhihua
• Mcgee Lawrence R
• Medina Julio C
• Mihalic Jeffrey T
• Nishimura Nobuko
• Olson Steven H
• Pattaropong Vatee
• Wang Xiaodong
• Yang Kevin
• Debenedetto Mikkel V
• Farrell Robert P
• Hedley Simon J
• Judd Ted C

Classifications

• A61P9/12

  Antihypertensives · CPC title

• C07D295/16

  acylated on ring nitrogen atoms · CPC title

• C07B59/002

  Heterocyclic compounds · CPC title

• C07D413/14

  containing three or more hetero rings · CPC title

• A61K31/501

  not condensed and containing further heterocyclic rings · CPC title