Patent Application
20200385354
The invention relates to quinoline sulfonamide compounds and their use for the treatment or prevention of bacterial infections. In particular, the invention relates to novel sulfonamide quinoline compounds substituted at the 2-position of the quinoline ring.
Bacterial Infections in humans and other animals continue to present a threat to human and animal health and well-being. Despite the evolution of several classes of antibiotics over the last century, bacterial resistance to commonly used antibiotics is a globally recognised problem to which there are few solutions at present.
Antibiotic resistance is present in every country. In February 2017, the World Health Organisation listed priority human pathogens for which research and development of new antibiotics is most critical, these being Acinetobacter baumannii (carbapenem-resistant), Pseudomonas aeruginosa (carbapenem-resistant), and Enterobacteraceae (carbapenem-resistant, ESBL-producing). Animals, particularly in food production, are also susceptible to a wide range of bacterial infections, e.g. Gram-negative respiratory disease, foot-rot, and mastitis including acute E. coli mastitis, and Pseudomonas mastitis. In New Zealand, dairy cattle, antibiotics are used primarily during dry cow therapy and for the treatment of mastitis, where the most commonly used antibiotics are penicillin-based products. Worldwide the widespread use of antibiotics in animal food has driven the rise of antibiotic-resistant strains of bacteria.
Antibiotics are used in livestock production for both disease prevention and treatment of disease. Approximately 80% of the antibiotics used in the United States is through their use in the animal food industry, and many of these antibiotics are important in human medicine. While the development of antibiotic resistance by bacteria is a natural process, the widespread use of antibiotics in the animal food and agricultural industries raises the possibility of antibiotic-resistant bacteria of animal origin contributing to infections in humans. As such, it is crucial that new antibacterial agents are developed that are targeted specifically at the agricultural industry, to protect the use of essential human antibiotics.
One example of a problematic bacterial infection in animals is bovine mastitis, a bacterial infection of the udder. Bovine mastitis is the most significant production limiting disease for dairying worldwide, and costs the New Zealand dairy industry NZ$280M each year.
Bovine mastitis is not only a disease of economic importance, but one with possible implications for public health. Mastitis is recognised as the most common reason for antibiotic use in the dairy industry, both within New Zealand and worldwide.
Preventative teat sprays containing sanitisers such as chlorhexidine and iodine are vital tools in managing mastitis. These sanitisers are applied to cows after every milking. However, chlorhexdine and iodine are essential human medicines used for the control of infection. They appear on the World Health Organisation (WHO) Model List of Essential Medicines. As bacterial tolerance to chlorhexidine has already been reported in Staphylococcus aureus, Klebsiella pneumonae, and Pseudomonas aeruginosa, it is crucial that new non-medical alternative sanitisers are developed for use in the agricultural industry.
An ionophore is a chemical species that reversibly binds ions. Many ionophores are lipid-soluble entities that transport ions across a cell membrane. An ionophore binds a metal, transports it across a lipid bilayer, releases the metal, and then re-engages with metal ions not yet transported across the membrane, repeating the process. Ionophores have been used as growth promotants in agriculture for decades. Monensin is the most widely used, and is included in animal feed to improve weight gain of beef cattle through a mechanism that alters rumen fermentation, in turn increasing milk yield and reducing milk fat content. Current evidence indicates that ionophores are unlikely to contribute to the spread of antibiotic resistance in humans because ionophores are not used in human medicine and have a distinct mode of action compared to antibiotic used in humans.
In the search for improved antibacterial agents, the applicant has found that ionophores able to bind zinc are potential candidates because they show rapid killing of certain bacteria. Notably, these bacteria are mastitis-causing bacteria and ionophores that bind zinc are not used in human medicine to treat bacterial infections. Taking advantage of zinc as a means to control mastitis offers two advantages: zinc homeostasis is critical to bacterial survival, and excess zinc accumulation in bacteria results in cellular toxicity.
8-Hydroxy quinoline compounds are examples of ionophores. They have the general structure:
They are known to have varied antibacterial activity against a number of clinically-relevant bacterial species, including E. coli, S. aureus, C. difficile, S. mutans, and Mycobacterium species. The acidic phenolic hydrogen is thought to be important for activity because it can be ionised relatively easily. Adding electron withdrawing substituents to the phenol ring (e.g. chlorine atoms) decreases the pKa of the phenolic hydrogen and can affect antibacterial activity. Sulfonamide quinoline compounds (where the hydroxyl group of the phenol ring has been replaced with a sulfonamide group) are also effective as antibacterial agents through their ionophore activity. The pKa of the sulfonamide hydrogen can be tailored by changing the substituent on the sulfonamide moiety.
Examples of known 8-sulfonamide quinoline compounds include:
The applicant has now found that certain substituted sulfonamide quinoline compounds exhibit inhibitory (antibacterial) activity against several groups of bacteria (including Gram-positive and Gram-negative bacteria). It is therefore an object of the invention to provide novel quinoline compounds as potential antibacterial agents, or to at least provide a useful alternative to current antibiotics.
In one aspect of the invention there is provided a compound of Formula I:
wherein
R1 is selected from the group comprising alkyl, cycloalkyl, alkenyl, alkynyl, aryl, alkylaryl, alkoxyaryl, heterocyclyl, alkylheterocyclyl, alkoxyheterocyclyl, heteroaryl, alkylheteroaryl, alkoxyheteroaryl, C1-C6 alkyl(cycloalkyl), aralkyl, C1-C6 alkyl(alkylaryl), C1-C6 alkyl(alkoxyaryl), C1-C6 alkyl(heterocyclyl), C1-C6 alkyl(alkylheterocyclyl), C1-C6 alkyl(alkoxyheterocyclyl), C1-C6 alkyl(heteroaryl), C1-C6 alkyl(alkylheteroaryl), and C1-C6 alkyl(alkoxyheteroaryl), each of which is optionally substituted with one or more of halogen, OR3, OCHO, OC(═O)R3, SR3, SCF3, SC(═O)R3, S(═O)R3, SO2R3, SO3H, SO2NR3R4, NR3R4, NR3CHO, NR3COR4, NR3CO2R4, NR3SO2R4, NO2, CN, CHO, COR3, CO2H, CO2R3, and CONR3R4;
R2 is selected from the group comprising alkyl, cycloalkyl, alkenyl, alkynyl, aryl, alkylaryl, alkoxyaryl, heterocyclyl, alkylheterocyclyl, alkoxyheterocyclyl, heteroaryl, alkylheteroaryl, alkoxyheteroaryl, C1-C6 alkyl(cycloalkyl), aralkyl, C1-C6 alkyl(alkylaryl), C1-C6 alkyl(alkoxyaryl), C1-C6 alkyl(heterocyclyl), C1-C6 alkyl(alkylheterocyclyl), C1-C6 alkyl(alkoxyheterocyclyl), C1-C6 alkyl(heteroaryl), C1-C6 alkyl(alkylheteroaryl), C1-C6 alkyl(alkoxyheteroaryl), (C1-C6 alkyl)NR7R8, (C1-C6 alkyl)NR7(C1-C6 alkyl)NR8R9, (C1-C6 alkyl)N((C1-C6 alkyl)NR8R9)2, (C1-C6 alkyl)NR7(C1-C6 alkyl)OR8, (C1-C6 alkyl)NR7(C1-C6 alkyl)O(C1-C6 alkyl)OR8, (C1-C6 alkyl)NR7C(═O)R8, (C1-C6 alkyl)NR7(C1-C6 alkyl)C(═O)NR8R9, (C0-C3 alkyl)CH═NOR7, CH═NNR7R8, (C0-C3 alkyl)CH═NNR7R8, (C0-C3 alkyl)CH═NNR3C(═O)R7, (C0-C3alkyl)CH═NNR3C(═S)R7, (C0-C3alkyl)CH═NNR3C(═O)NR7R8, (C0-C3 alkyl)CH═NNR3C(═S)NR7R8, (C0-C3 alkyl)CH═NNR3C(═O)C(═NOR7)R8, (C0-C3 alkyl)CH═NR3C(═O)C(═O)NR7R8, (C0-C3 alkyl)C(═O)NR7R8, (C0-C3 alkyl)C(═O)NR3OR7, (C0-C3 alkyl)C(═O)NR3NR7R8, each of which is optionally substituted with one or more of each of halogen, alkyl, OR3, OCHO, OC(═O)R3, SR3, SC(═O)R3, S(═O)R3, S2R3, SO3H, SO2NR3R4, NR3R4, NR3CHO, NR3COR4, NR3CO2R4, NR3C(═O)NR4R5, NR3C(═S)NR4R5, NR3C(═NR4)NR5R6, NR3C(═NNO2)NR4R5, NR3C(═NCN)NR4R5, NR3C(═CHNO2)NR4R5, NR3C(═NR4)R5, NR3SO2R4, NO2, CN, CHO, COR3, CO2H, C2R3, CONR3R4, C(═O)NR3OR3, C(═O)NR3NR4R5, C(═O)NR3CN, or wherein R2 is CHO;
R3, R4, R5 and R6 are each selected from the group comprising hydrogen, alkyl, aryl and aralkyl; and
R7, R8 and R9 are each selected from the group comprising hydrogen, hydroxyl, alkyl, cycloalkyl, alkenyl, alkynyl, aryl, alkylaryl, alkoxyaryl, heterocyclyl, alkylheterocyclyl, alkoxyheterocycyl, heteroaryl, alkylheteroaryl, alkoxyheteroaryl, C1-C6 alkyl(cycloalkyl), aralkyl, C1-C6 alkyl(alkylaryl), C1-C6 alkyl(alkoxyaryl), C1-C6 alkyl(heterocyclyl), C1-C6 alkyl(alkylheterocyclyl), C1-C6 alkyl(alkoxyheterocyclyl), C1-C6 alkyl(heteroaryl), C1-C6 alkyl(alkylheteroaryl), C1-C6 alkyl(alkoxyheteroaryl), monosaccharide, disaccharide, each of which is optionally substituted with one or more of halogen, OR3, OCHO, OC(═O)R3, SR3, SC(═O)R3, S(═O)R3, SO2R3, SO3H, SO2NR3R4, NR3R4, NR3CHO, NR3COR4, NR3CO2R4, NR3C(═O)NR4R5, NR3C(═S)NR4R5, NR3C(═NR4)NR5R6, NR3C(═NNO2)NR4R5, NR3C(═NCN)NR4R5, NR3C(═CHNO2)NR4R5, NR3C(═NR4)R5, NR3S2R4, NO2, CN, CHO, COR3, CO2H, CO2R3, CONR3R4, C(═O)NR3OR3, C(═O)NR3NR4R5, C(═O)NR3CN; or a pharmaceutically acceptable salt or hydrate thereof.
In certain embodiments, R2 is not an unsubstituted group selected from the following: methyl, pyridyl, formyl, 1-2-[(1-ethyl-6,7-dimethoxy-4-isoquinolinyl)methyl, 3-(trifluoromethyl)phenyl, 3-(trifluoromethoxy)phenyl, or 3,5-dimethyl-1H-pyrazol-1-yl.
In certain embodiments, where R1 is an unsubstituted aminosulfonylphenyl, R2 is not unsubstituted 2-(diethylamino)ethyl.
In certain embodiments the compound is a compound of Formula I wherein R1 and R2 are not both unsubstituted groups selected from: alkyl, alkenyl, alkynyl, or aryl.
In certain embodiments, the compound defined by Formula I is not Benzenesulfonamide, 4-hydroxy-N-(2-methyl-8-quinolinyl); 2-Thiophenesulfonamide, 4-bromo-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 4-(1-methylethoxy)-N-(2-methyl-8-quinolinyl); Ethanesulfonamide, N-[2-[(1-ethyl-6,7-dimethoxy-4-isoquinolinyl)methyl]-8-quinolinyl]; Methanesulfonamide, N-[2-[(1-ethyl-6,7-dimethoxy-4-isoquinolinyl)methyl]-8-quinolinyl]; Methanesulfonamide, N-(2-formyl-8-quinolinyl); Benzenesulfonamide, 3-fluoro-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 2-fluoro-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 3-bromo-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 3-chloro-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 2-chloro-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 2-bromo-N-(2-methyl-8-quinolinyl); 3-Pyridinesulfonamide, N-(2-methyl-8-quinolinyl); 2-Thiophenesulfonamide, 5-methyl-N-(2-methyl-8-quinolinyl); 2-Thiophenesulfonamide, 3-methyl-N-(2-methyl-8-quinolinyl); 2-Thiophenesulfonamide, 5-ethyl-N-(2-methyl-8-quinolinyl); 3-Thiophenesulfonamide, 2,5-dichloro-N-(2-methyl-8-quinolinyl); 2-Thiophenesulfonamide, 4-bromo-5-chloro-N-(2-methyl-8-quinolinyl); 2-Furansulfonamide, N-(2-methyl-8-quinolinyl); 2-Thiophenesulfonamide, 4,5-dibromo-N-(2-methyl-8-quinolinyl); 2-Thiophenesulfonamide, 5-chloro-N-(2-methyl-8-quinolinyl)-4-nitro; 2-Thiophenesulfonamide, 4,5-dichloro-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 4-amino-2-fluoro-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 4-amino-2-methoxy-N-[2-(2-pyridinyl)-8-quinolinyl]; Methanesulfonamide, N-[2-(2-pyridinyl)-8-quinolinyl]; Benzenesulfonamide, 2-methoxy-4-nitro-N-[2-(2-pyridinyl)-8-quinolinyl]; 2-Thiophenesulfonamide, 5-bromo-N-[2-(2-pyridinyl)-8-quinolinyl]; Benzenesulfonamide, 4-cyano-N-[2-(2-pyridinyl)-8-quinolinyl]; Benzoic acid, 3-[[[2-(2-pyridinyl)-8-quinolinyl]amino]sulfonyl]; Benzenesulfonamide, 3,5-difluoro-N-[2-(2-pyridinyl)-8-quinolinyl]; Benzoic acid, 2-[[[2-(2-pyridinyl)-8-quinolinyl]amino]sulfonyl]-, methyl ester; Benzenesulfonamide, N-[2-(2-pyridinyl)-8-quinolinyl]-4-(trifluoromethyl); Benzenesulfonamide, N-[2-(2-pyridinyl)-8-quinolinyl]; Benzenesulfonamide, 4-chloro-N-[2-(2-pyridinyl)-8-quinolinyl]; Benzenesulfonamide, 4-methyl-N-[2-(2-pyridinyl)-8-quinolinyl]; 2-Pyridinesulfonamide, N-[2-[3-(trifluoromethyl)phenyl]-8-quinolinyl]; 1-Piperazinesulfonamide, N-[2-[3-(trifluoromethoxy)phenyl]-8-quinolinyl]; 1-Pyrrolidinesulfonamide, N-[2-[3-(trifluoromethoxy)phenyl]-8-quinolinyl]; Benzenesulfonamide, 3,5-dichloro-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 2-amino-4-fluoro-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 4-fluoro-N-(2-methyl-8-quinolinyl)-2-nitro; 2-Thiophenesulfonamide, 5-bromo-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 2-amino-N-(2-methyl-8-quinolinyl)-4-(trifluoromethyl); Benzenesulfonamide, 2-amino-4-methoxy-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 4-hydroxy-N-(2-methyl-8-quinolinyl)-2-nitro; 2-Thiophenesulfonamide, 5-chloro-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 2-amino-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 2-methyl-N-(2-methyl-8-quinolinyl)-5-nitro; Benzenesulfonamide, 4-methoxy-N-(2-methyl-8-quinolinyl)-2-nitro; Benzenesulfonamide, N-(2-methyl-8-quinolinyl)-2-nitro-4-(trifluoromethyl); Benzenesulfonamide, N-(2-methyl-8-quinolinyl)-3-nitro; Benzenesulfonamide, 2-methoxy-5-methyl-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 4-amino-N-(2-methyl-8-quinolinyl); 8-Quinolinesulfonamide, N-(2-methyl-8-quinolinyl); Benzenesulfonamide, N-(2-methyl-8-quinolinyl)-2-nitro; Benzenesulfonamide, 4-fluoro-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 4-chloro-N-(2-methyl-8-quinolinyl); Acetamide, N-[4-[[(2-methyl-8-quinolinyl)amino]sulfonyl]phenyl]; Acetamide, N-[4-[[[2-[2-(diethylamino)ethyl]-8-quinolinyl]amino]sulfonyl]phenyl]; Benzenesulfonamide, N-(2-formyl-8-quinolinyl); Methanesulfonamide, N-[2-(3,5-dimethyl-1Hpyrazol-1-yl)-8-quinolinyl]; Benzenesulfonamide, N-[2-(3,5-dimethyl-1Hpyrazol-1-yl)-8-quinolinyl]-4-methyl; Methanesulfonamide, 1,1,1-trifluoro-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 4-methoxy-N-(2-methyl-8-quinolinyl); Methanesulfonamide, N-(2-methyl-8-quinolinyl); Benzenesulfonamide, 2,4,6-trimethyl-N-(2-methyl-8-quinolinyl); Benzenesulfonamide, N-(2-methyl-8-quinolinyl) and Benzenesulfonamide, 4-methyl-N-(2-methyl-8-quinolinyl).
In certain embodiments, the compounds defined by Formula I are not ZDR030, ZDR035, ZDR046, ZDR090, ZDR102, ZDR111, ZDR112, ZDR113, ZDR114, ZDR115, ZDR116, ZDR117, ZDR119, ZDR120, ZDR121, ZDR122, ZDR124, ZDR125, ZDR143, ZDR167, ZDR170, ZDR171, ZDR187, ZDR261, ZDR262, ZDR266, ZDR268 and ZDR269, as disclosed herein.
In certain embodiments according to the compounds defined by Formula I, R1 is alkyl, aryl, alkylaryl, alkoxyaryl or heteroaryl substituted with halogen.
In certain embodiments R1 is aryl, alkylaryl or alkoxyaryl substituted with halogen.
In certain embodiments R1 is alkylaryl or alkoxyaryl substituted with halogen.
In certain embodiments R1 is alkylaryl substituted with halogen. For example, R1 may be (trifluoromethyl)phenyl.
In certain embodiments R2 is (C1-C6 alkyl)NR7R8.
In certain embodiments R1 is alkyl, aryl, alkylaryl, alkoxyaryl or heteroaryl substituted with halogen and R2 is (C1-C6 alkyl)NR7R8.
In certain embodiments R1 is aryl, alkylaryl or alkoxyaryl substituted with halogen and R2 is (C1-C6 alkyl)NR7R8.
In certain embodiments R1 is alkylaryl or alkoxyaryl substituted with halogen and R2 is (C1-C6 alkyl)NR7R8
In certain embodiments R1 is alkylaryl substituted with halogen and R2 is (C1-C6 alkyl)NR7R8.
In certain embodiments R1 is (trifluoromethyl)phenyl and R2 is (C1-C6 alkyl)NR7R8.
In certain embodiments R2 is (C1-C6 alkyl)NR7(C1-C6 alkyl)NR8R9.
In certain embodiments R1 is alkyl, aryl, alkylaryl, alkoxyaryl or heteroaryl substituted with halogen and R2 is (C1-C6 alkyl)NR7(C1-C6 alkyl)NR8R9.
In certain embodiments R1 is aryl, alkylaryl or alkoxyaryl substituted with halogen and R2 is (C1-C6 alkyl)NR7(C1-C6 alkyl)NR8R9.
In certain embodiments R1 is alkylaryl or alkoxyaryl substituted with halogen and R2 is (C1-C6 alkyl)NR(C1-C6 alkyl)NR8R9.
In certain embodiments R1 is alkylaryl substituted with halogen and R2 is (C1-C6 alkyl)NR7(C1-C6 alkyl)NR8R9.
In certain embodiments R1 is (trifluoromethyl)phenyl and R2 is (C1-C6 alkyl)NR7(C1-C6 alkyl)NR8R9.
In certain embodiments R2 is (C0-C3 alkyl)CH═NOR7.
In certain embodiments R1 is alkyl, aryl, alkylaryl, alkoxyaryl or heteroaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NOR7.
In certain embodiments R1 is aryl, alkylaryl or alkoxyaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NOR7.
In certain embodiments R1 is alkylaryl or alkoxyaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NOR7.
In certain embodiments R1 is alkylaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NOR7.
In certain embodiments R1 is (trifluoromethyl)phenyl and R2 is (C0-C3 alkyl)CH═NOR7.
In certain embodiments R2 is (C0-C3 alkyl)CH═NNR7R8.
In certain embodiments R1 is alkyl, aryl, alkylaryl, alkoxyaryl or heteroaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NNR7R8.
In certain embodiments R1 is aryl, alkylaryl or alkoxyaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NNR7R8.
In certain embodiments R1 is alkylaryl or alkoxyaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NNR7R8.
In certain embodiments R1 is alkylaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NNR7R8.
In certain embodiments R1 is (trifluoromethyl)phenyl and R2 is (C0-C3 alkyl)CH═NNR7R8.
In certain embodiments R2 is (C0-C3 alkyl)CH═NNR3C(═O)R7.
In certain embodiments R1 is alkyl, aryl, alkylaryl, alkoxyaryl or heteroaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NNR3C(═O)R7.
In certain embodiments R1 is aryl, alkylaryl or alkoxyaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NNR3C(═O)R7.
In certain embodiments R1 is alkylaryl or alkoxyaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NNR3C(═O)R7.
In certain embodiments R1 is alkylaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NNR3C(═O)R7.
In certain embodiments R1 is (trifluoromethyl)phenyl and R2 is (C0-C3 alkyl)CH═NNR3C(═O)R7.
In certain embodiments R2 is (C0-C3 alkyl)CH═NNR3C(═O)NR7R8.
In certain embodiments R1 is alkyl, aryl, alkylaryl, alkoxyaryl or heteroaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NNR3C(═O)NR7R8.
In certain embodiments R1 is aryl, alkylaryl or alkoxyaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NNR3C(═O)NR7R8.
In certain embodiments R1 is alkylaryl or alkoxyaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NNR3C(═O)NR7R8.
In certain embodiments R1 is alkylaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NNR3C(═O)NR7R8.
In certain embodiments R1 is (trifluoromethyl)phenyl and R2 is (C0-C3 alkyl)CH═NNR3C(═O)NR7R8.
In certain embodiments R2 is (C0-C3 alkyl)CH═NNR3C(═S)NR7R8.
In certain embodiments R1 is alkyl, aryl, alkylaryl, alkoxyaryl or heteroaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NNR3C(═S)NR7R8.
In certain embodiments R1 is aryl, alkylaryl or alkoxyaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NNR3C(═S)NR7R8.
In certain embodiments R1 is alkylaryl or alkoxyaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NNR3C(═S)NR7R8.
In certain embodiments R1 is alkylaryl substituted with halogen and R2 is (C0-C3 alkyl)CH═NNR3C(═S)NR7R8.
In certain embodiments R1 is (trifluoromethyl)phenyl and R2 is (C0-C3 alkyl)CH═NNR3C(═S)NR7R8.
Exemplary compounds of the invention include:
Advantageously, e compounds described and claimed herein possess antibacterial activity against both Gram positive and Gram negative bacteria. Data to support these observations is presented in Tables 1 & 2 of Example 214, which follows. Specifically, exemplary compounds of the invention demonstrated both growth inhibitory and bactericidal activity against Streptococcus uberis, Staphylococcus aureus and Escherichia coli, as measured using MIC and MBC assays, respectively. In certain examples, the exemplary compounds advantageously demonstrate antibacterial activity in the absence of zinc (i.e. added exogenously to the assay medium).
Accordingly, in yet a further aspect of the invention of the invention there is provided a compound of Formula Ia:
wherein
R1 is selected from the group comprising alkyl, cycloalkyl, alkenyl, alkynyl, aryl, alkylaryl, alkoxyaryl, heterocyclyl, alkylheterocyclyl, alkoxyheterocyclyl, heteroaryl, alkylheteroaryl, alkoxyheteroaryl, C1-C6 alkyl(cycloalkyl), aralkyl, C1-C6 alkyl(alkylaryl), C1-C6 alkyl(alkoxyaryl), C1-C6 alkyl(heterocyclyl), C1-C6 alkyl(alkylheterocyclyl), C1-C6 alkyl(alkoxyheterocyclyl), C1-C6 alkyl(heteroaryl), C1-C6 alkyl(alkylheteroaryl), and C1-C6 alkyl(alkoxyheteroaryl), each of which is optionally substituted with one or more of halogen, OR3, OCHO, OC(═O)R3, SR3, SCF3, SC(═O)R3, S(═O)R3, S2R3, SO3H, SO2NR3R4, NR3R4, NR3CHO, NR3COR4, NR3CO2R4, NR3SO2R4, NO2, CN, CHO, COR3, CO2H, CO2R3, and CONR3R4;
R2 is selected from the group comprising (C1-C6 alkyl)NR7(C1-C6 alkyl)NR7R8, (C1-C6 alkyl)NR7(C0-C6 alkyl)(pyridinyl), (C1-C6 alkyl)NR7(C0-C6 alkyl)(hydroxyaryl), (C1-C6 alkyl)NR7(C1-C6 hydroxyalkyl), (C1-C6 alkyl)NR7(C1-C6 alkyl)heterocyclyl, (C1-C6 alkyl)NR7(C1-C6 alkyl)NR3C(═NR3)NR7R8, (C1-C6 alkyl)NR3C(═NR3)NR7R8, (C1-C6 alkyl)NR7(C1-C6 alkyl)C(═O)NR7(C1-C6 alkyl), (C1-C6 alkyl)NR7(C1-C6 alkyl)C(═O)NR7R8, (C0-C3 alkyl)C═NNR3C(═S)NR7R8, (C0-C3 alkyl)C═NNR3C(═O)R7 or (C0-C3 alkyl)C═NOR3; each of which is optionally substituted with one or more of each of alkyl, halogen, OR3, OCHO, OC(═O)R3, SR3, SC(═O)R3, S(═O)R3, S2R3, SO3H, SO2NR3R4, NR3R4, NR3CHO, NR3COR4, NR3CO2R4, NR3C(═O)NR4R5, NR3C(═S)NR4R5, NR3C(═NR4)NR5R6, NR3C(═NNO2)NR4R5, NR3C(═NCN)NR4R5, NR3C(═CHNO2)NR4R5, NR3C(═NR4)R5, NR3S2R4, NO2, CN, CHO, COR3, CO2H, CO2R3, CONR3R4, C(═O)NR3OR3, C(═O)NR3NR4R5, C(═O)NR3CN;
R3, R4, R5 and R6 are each selected from the group comprising hydrogen, alkyl, aryl and aralkyl; and
R7, R8 and R9 are each selected from the group comprising hydrogen, hydroxyl, alkyl, cycloalkyl, alkenyl, alkynyl, aryl, alkylaryl, alkoxyaryl, heterocyclyl, alkylheterocyclyl, alkoxyheterocyclyl, heteroaryl, alkylheteroaryl, alkoxyheteroaryl, C1-C6 alkyl(cycloalkyl), aralkyl, C1-C6 alkyl(alkylaryl), C1-C6 alkyl(alkoxyaryl), C1-C6 alkyl(heterocyclyl), C1-C6 alkyl(alkylheterocyclyl), C1-C6 alkyl(alkoxyheterocyclyl), C1-C6 alkyl(heteroaryl), C1-C6 alkyl(alkylheteroaryl), C1-C6 alkyl(alkoxyheteroaryl), monosaccharide, disaccharide, each of which is optionally substituted with one or more of halogen, OR3, OCHO, OC(═O)R3, SR3, SC(═O)R3, S(═O)R3, SO2R3, SO3H, SO2NR3R4, NR3R4, NR3CHO, NR3COR4, NR3CO2R4, NR3C(═O)NR4R5, NR3C(═S)NR4R5, NR3C(═NR4)NR5R6, NR3C(═NNO2)NR4R5, NR3C(═NCN)NR4R5, NR3C(═CHNO2)NR4R5, NR3C(═NR4)R5, NR3S2R4, NO2, CN, CHO, COR3, CO2H, CO2R3, CONR3R4, C(═O)NR3OR3, C(═O)NR3NR4R5, C(═O)NR3CN;
or a pharmaceutically acceptable salt or hydrate thereof.
In certain embodiments, the compound defined by Formula Ia is selected from ZDR030, ZDR035, ZDR046, ZDR090, ZDR102, ZDR111, ZDR112, ZDR113, ZDR114, ZDR115, ZDR116, ZDR117, ZDR119, ZDR120, ZDR121, ZDR122, ZDR124, ZDR125, ZDR143, ZDR167, ZDR170, ZDR171, ZDR187, ZDR261, ZDR262ZDR266, ZDR268 and ZDR269.
In another aspect the present invention provides a compound defined as ZDR022.HCl.
In another aspect the present invention provides a compound defined as ZDR090.
In another aspect the present invention provides a compound defined as ZDR091.
In another aspect the present invention provides a compound defined as ZDR092.
In another aspect the present invention provides a compound defined as ZDR095.
In another aspect the present invention provides a compound defined as ZDR102.
In another aspect the present invention provides a compound defined as ZDR111.
In another aspect the present invention provides a compound defined as ZDR112.
In another aspect the present invention provides a compound defined as ZDR114.
In another aspect the present invention provides a compound defined as ZDR115.
In another aspect the present invention provides a compound defined as ZDR116.
In another aspect the present invention provides a compound defined as ZDR117.
In another aspect the present invention provides a compound defined as ZDR119.
In another aspect the present invention provides a compound defined as ZDR120.
In another aspect the present invention provides a compound defined as ZDR121.
In another aspect the present invention provides a compound defined as ZDR122.
In another aspect the present invention provides a compound defined as ZDR124.
In another aspect the present invention provides a compound defined as ZDR125.
In another aspect the present invention provides a compound defined as ZDR127.
In another aspect the present invention provides a compound defined as ZDR143.
In another aspect the present invention provides a compound defined as ZDR167.
In another aspect the present invention provides a compound defined as ZDR170.
In another aspect the present invention provides a compound defined as ZDR171.
In another aspect the present invention provides a compound defined as ZDR187.
In another aspect the present invention provides a compound defined as ZDR224.
In another aspect the present invention provides a compound defined as ZDR261.
In another aspect the present invention provides a compound defined as ZDR269.
In another aspect the present invention provides a compound defined as ZDR335.
In yet another aspect of the invention there is provided a pharmaceutical composition comprising a compound of the invention and a pharmaceutically acceptable carrier.
In certain embodiments the composition is a veterinary pharmaceutical composition.
In certain embodiments the composition further comprises an antibacterial compound selected from the group comprising chlorhexidine, iodine, lactic acid, cetrimide, BZK (benzylalkonium chloride), amoxicillin, erythromycin, cloxacillin, pirlimycin, cephapirin, hetacillin, penicillin, nicin and lacticin.
In certain embodiments the composition is formulated as a tablet, capsule or powder, or as a solution, suspension or dispersion for oral, injectable or sprayable administration.
In another aspect of the invention there is provided a method of treating or preventing a bacterial infection in an animal comprising administering to an animal a pharmaceutically effective amount of a compound of the invention.
In certain embodiments according to this aspect of the invention the compound is selected from ZDR022.HCl, ZDR090, ZDR091, ZDR092, ZDR095, ZDR102, ZDR111, ZDR112, ZDR114, ZDR115, ZDR116, ZDR117, ZDR119, ZDR120, ZDR121, ZDR122, ZDR124, ZDR125, ZDR127, ZDR143, ZDR167, ZDR170, ZDR171, ZDR187, ZDR224, ZDR261, ZDR269 and ZDR335.
In certain embodiments the bacterial infection is caused by one or more bacteria from the Enterobactericeae, Staphylococcaceae, and Streptococcaceae families. By way of non-limiting example, this includes Streptococcus uberis, Staphylococcus aureus, Staphylococcus agalactiae, and Escherichia coli.
In certain embodiments the bacterial infection is mastitis.
In certain embodiments the animal is a bovine cow.
The term “alkyl” means any saturated hydrocarbon radical and is intended to include both straight-chain and branched-chain alkyl groups. Examples of alkyl groups include, but are not limited to, methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl, t-butyl, n-pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 1,1-dimethylpropyl, 1,2-dimethylpropyl, 2,2-dimethylpropyl, 1-ethylpropyl, n-hexyl, and 1-methyl-2-ethylpropyl. The term “C1-C6 alkyl” means any alkyl radical having up to 6 carbon atoms.
The term “alkenyl” means any hydrocarbon radical having at least one double bond, and is intended to include both straight- and branched-chain alkenyl groups. Examples of alkenyl groups include, but are not limited to, ethenyl, n-propenyl, iso-propenyl, n-butenyl, sec-butenyl, n-pentenyl, 1,1-dimethylpropenyl, 1,2-dimethylpropenyl, 2,2-dimethylpropenyl, 1-ethylpropenyl, 2-ethylpropenyl, n-hexenyl, and 1-methyl-2-ethylpropenyl.
The term “alkynyl” means any hydrocarbon radical having at least one triple bond, and is intended to include both straight- and branched-chain alkynyl groups. Examples of alkynyl groups include, but are not limited to, ethynyl, n-propynyl, n-butynyl, iso-butynyl, sec-butynyl, t-butynyl, n-pentynyl, 1,1-dimethylpropynyl, 2,2-dimethylpropynyl, 1-ethylpropynyl, 2-ethylpropynyl, n-hexynyl, and 1-methyl-2-ethylpropynyl.
The term “alkylene” means a diradical corresponding to an alkyl group. Examples of alkylene groups include, but are not limited to, methylene and ethylene.
The term “cycloalkyl” means a saturated or partially saturated non-aromatic carbocyclic group, having preferably from 3 to 8 ring carbon atoms. Examples of cycloalkyl groups include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, and cyclooctyl.
The term “heterocyclyl” means a cycloalkyl group where one or more of the ring carbon atoms is replaced with one or more heteroatoms, e.g. nitrogen, oxygen or sulfur. Examples of heterocyclyl groups include, but are not limited to, pyrrolidinyl, pyrrolinyl, pyrazolidinyl, aziridinyl, thiiranyl, 1,2-dithietanyl, morpholinyl, furanyl, pyranyl, thiophenyl, isoxazolyl, furazanyl, tetrahydrofuranyl, thietanyl, piperidinyl, azetidinyl, oxiranyl, epoxide, and thiacyclohexyl.
The term “alkoxy” means an alkyl group singular bonded to an oxygen atom. Examples of alkoxy groups include, but are not limited to, methoxy, ethoxy, propoxy, iso-propoxy, n-butoxy, iso-butoxy, sec-butoxy, and t-butoxy,
The term “aryl” means an aromatic radical. Examples include monocyclic groups as well as fused groups such as bicyclic groups and tricyclic groups. Examples include, but are not limited to, phenyl, indenyl, 1-naphthyl, 2-naphthyl, azulenyl, heptalenyl, biphenyl, indacenyl, acenaphthyl, fluorenyl, phenalenyl, phenanthrenyl, anthracenyl, cyclopentacyclooctenyl, and benzocyclooctenyl.
The term “heteroaryl” means a heterocyclic aromatic (heteroaromatic) radical. Examples include monocyclic groups as well as fused groups such as bicyclic groups and tricyclic groups. Examples include, but are not limited to, pyridyl, pyrrolyl, pyridazinyl, pyrimidinyl, pyrazinyl, triazolyl, tetrazolyl, benzotriazolyl, pyrazolyl, imidazolyl, benzimidazolyl, indolyl, isoindolyl, indolizinyl, purinyl, indazolyl, furyl, pyranyl, benzofuryl, isobenzofuryl, thienyl, thiazolyl, isothiazolyl, benzothiazolyl, oxazolyl, and isoxazolyl.
The term “aralkyl” means an aryl group which is attached to an alkylene moiety, where “aryl” and “alkylene” are as defined above. Examples include benzyl.
The term “alkylaryl” means an alkyl group which is attached to an aryl group, where “alkyl” and “aryl” are defined above. Examples include methylphenyl.
The term “alkoxyaryl” means an alkoxy group which is attached to an aryl group, where “alkoxy” and “aryl” are defined above. Examples include methoxyphenyl.
The term “alkylheteroaryl” means an alkyl group which is attached to heteroaryl group, where “alkyl” and “heteroaryl” are defined above. Examples include methylpyridinyl.
The term “alkoxyheteroaryl” means alkoxy group which is attached to heteroaryl group, where “alkoxy” and “heteroaryl” are defined above. Examples includes methoxypyridinyl.
The term “prodrug” as used herein refers to a drug substance that is inactive or weakly active in the intended pharmacological actions and is converted into the pharmacologically active or more active agent by metabolic or physico-chemical transformation.
The term “pharmaceutical composition” as used herein refers to a mixture of one or more of the compounds of formula (I), or pharmaceutically acceptable salts, or hydrates thereof, with other chemical components, such as physiologically acceptable carriers and excipients. The purpose of a pharmaceutical composition is to facilitate administration of a compound to an organism.
The term “carrier” refers to a diluent, adjuvant, excipient, or vehicle with which a compound is administered. Non-limiting examples of such pharmaceutical carriers include liquids, such as water and oils, including those of petroleum, animal, vegetable or synthetic origin, such as peanut oil, soybean oil, mineral oil, sesame oil and the like. The pharmaceutical carrier may also be saline, gum acacia, gelatin, starch paste, talc, keratin, colloidal silica, urea, and the like. In addition, auxiliary, stabilizing, thickening, lubricating and colouring agents may be used. Other examples of suitable pharmaceutical carriers are described in “Remington's Pharmaceutical Sciences” by E. W. Martin, herein incorporated by reference.
The term “effective amount” means an amount of a compound that, when administered to a subject for treating a disease, is sufficient to effect such treatment for the disease. The “effective amount” will vary depending on the disease to be treated, the compound to be administered, the severity of the disease treated, the age and relative health of the subject, the route and form of administration, whether the treatment is monotherapy or combination therapy, the judgement of the attending clinician, and other factors.
The term “pharmaceutically acceptable” means that which is useful in preparing a pharmaceutical composition that is generally safe, non-toxic, and neither biologically nor otherwise undesirable and includes that which is acceptable for veterinary as well as human pharmaceutical use.
The term “pharmaceutically acceptable salt” as used herein refers to any salt of a compound provided herein which retains its biological properties and which is not toxic or otherwise undesirable for pharmaceutical use and is intended to include salts derived from inorganic or organic acids including, for example hydrochloric, hydrobromic, sulfuric, nitric, perchloric, phosphoric, formic, acetic, lactic, maleic, fumaric, succinic, tartaric, glycolic, salicylic, citric, methanesulfonic, benzenesulfonic, benzoic, malonic, trifluroacetic, trichloroacetic, naphthalene-2 sulfonic and other acids. Pharmaceutically acceptable salt forms may also include forms wherein the ratio of molecules comprising the salt is not 1:1. For example, the salt may comprise more than one inorganic or organic acid molecule per molecule of base, such as two hydrochloric acid molecules per molecule of compound of formula (I).
The compounds of the invention are defined according to formula (I) above. The applicants have found that the compounds of the invention are effective inhibitors of several bacterial strains. As will be appreciated, there is an expectation that the compounds will be inhibitors of a larger group of bacteria.
The compounds are characterised as having a substituted sulfonamide group at the 8-position of the quinoline ring structure and a substituent at the 2-position. Without being bound by theory, it is considered that the pKa of the sulfonamide hydrogen plays a role in the ability of the compound to act as an ionophore and therefore that an electron withdrawing group on the sulfonamide substituent is preferable. Examples of electron withdrawing groups include halogen, haloalkyl, haloalkoxy, alkyl carbonyl, alkyl ester, carboxylic acid, nitrile, and nitro.
The substituent at the 2-position may be chosen from a large variety of different types of groups. Some preferred groups are those that incorporate a nitrogen functionality. Again without being bound by theory, it is thought that those compounds having an amino group one carbon removed from the quinoline ring at the 2-position may beneficially interact, in combination with the quinoline nitrogen and the sulfonamide nitrogen, with a zinc cation.
The compounds of the invention may be prepared by any known or standard synthetic procedures. Some compounds may be prepared according to scheme 1 from 8-amino-2-methylquinoline by reaction firstly with a substituted sulfonyl chloride, followed by oxidation of the 2-methyl group to an aldehyde (to give a 2-formyl derivative), and then reductive amination.
Alternatively, some compounds may be prepared according to scheme 2 from 8-amino-2-methylquinoline (which is first protected as a carbamate) via oxidation of the 2-methyl group to an aldehyde (to give a 2-formyl derivative), reductive amination (followed by deprotection) and then reaction with a substituted sulfonyl chloride.
Acyhydrazones and semicarbazones/thiosemicarbazones may be prepared from a common 2-formyl pre-cursor according to schemes 3 and 4, respectively.
Oximes and hydrazones may be prepared from a common 2-formyl pre-cursor according to schemes 5 and 6. respectively.
Aminomethyl derivatives (including amides, guanidines, nitro-guanidines and sulfonamides) may be prepared from a common 2-aminomethyl precursor (via an oxime, scheme 5) according to scheme 7.
Amino amide derivatives may be prepared from a common N-boc-protected amino acid precursor (via an N-hydroxysuccinimide ester) according to scheme 8.
Amide derivatives may be prepared from a common carboxylic acid precursor (itself accessed through the oxidation of a 2-formyl precursor, scheme 1) according to scheme 9.
The compounds of the invention may be administered to a human or animal patient by a variety of mutes, including orally, parenterally, by inhalation spray, topically, rectally, nasally, buccally, intravenously, intra-muscularly, intra-dermally, subcutaneously or via an implanted reservoir, preferably intravenously. The amount of compound to be administered will vary widely according to the nature of the patient and the nature and extent of the disorder to be treated. Typically the dosage for an adult human will be in the range 50-4800 μg/m2 or μg/kg. The specific dosage required for any particular patient will depend upon a variety of factors, including the patient's age, body weight, general health, sex, etc.
For oral administration, the compounds of the invention can be formulated into solid or liquid preparations, for example tablets, capsules, powders, solutions, suspensions and dispersions. Such preparations are well known in the art as are other oral dosage regimes not listed here. In the tablet form the compounds may be tableted with conventional tablet bases such as lactose, sucrose and corn starch, together with a binder, a disintegration agent and a lubricant. The binder may be, for example, corn starch or gelatin, the disintegrating agent may be potato starch or alginic acid, and the lubricant may be magnesium stearate. For oral administration in the form of capsules, diluents such as lactose and dried corn-starch may be employed. Other components such as colourings, sweeteners or flavourings may be added.
When aqueous suspensions are required for oral use, the active ingredient may be combined with carriers such as water and ethanol, and emulsifying agents, suspending agents and/or surfactants may be used. Colourings, sweeteners or flavourings may also be added.
The compounds may also be administered by injection in a physiologically acceptable diluent such as water or saline. The diluent may comprise one or more other ingredients such as ethanol, propylene glycol, an oil or a pharmaceutically acceptable surfactant. In one preferred embodiment, the compounds are administered by intravenous injection, where the diluent comprises an aqueous solution of sucrose, L-histidine and a pharmaceutically acceptable surfactant, e.g. Tween 20.
The compounds may also be administered topically, including as a spray particularly for some animal indications such as mastitis. Carriers for topical administration of the compounds include mineral oil, liquid petrolatum, white petrolatum, propylene glycol, polyoxyethylene, polyoxypropylene compound, emulsifying wax and water. Some teat spray formulations for treating mastitis may include glycerol and one or more surfactants in addition to other carriers. The compounds may be present as ingredients in lotions or creams, for topical administration to skin or mucous membranes. Such creams may contain the active compounds suspended or dissolved in one or more pharmaceutically acceptable carriers. Suitable carriers include mineral oil, sorbitan monostearate, polysorbate 60, cetyl ester wax, cetearyl alcohol, 2-octyldodecanol, benzyl alcohol and water.
The compounds may further be administered by means of sustained release systems. For example, they may be incorporated into a slowly dissolving tablet or capsule.
The compounds of the invention may also be administered in combination with other antimicrobial compounds such as chlorhexidine, iodine, lactic acid, cetrimide, BZK (benzylalkonium chloride), amoxicillin, erythromycin, cloxacillin, pirlimycin, cephapirin, hetacillin and penicillin, and bacteriocins such as nisin and lacticin. Such combinations may administered in any form including teat sprays for bovine cows and other animals.
Further, the compounds of the invention may be used alone or in combination with other active ingredients in external or internal teat seal formulations. Teat seals provide a physical barrier to prevent bacteria accessing the teat or udder of a cow. External teat seals provide a barrier across the entrance to the teat canal. The end of each teat is dipped in a teat seal formulation after milking has ended. The seal then dries to provide a film that prevents entry of bacteria to the teat canal. Internal teat seals are typically pastes that are infused into each quarter of a cow's udder at the start of the drying off period. The paste forms an internal physical barrier to bacteria entering the teat canal. Many internal teat seal formulations comprise bismuth sub-nitrate and a heavy metal salt such as barium sulfate, often formulated as gels which solidify after administration. One example is TEATSEAL™.
The applicant does not wish to be bound by theory, but proposes that mechanism of killing of bacteria by a compound of the invention is three-fold. Firstly, the compound is able to translocate zinc into the bacterial cytoplasm (inside the bacterial cell). Accumulation of zinc overcomes the zinc homeostatic apparatus of the bacterial cells, leading to cell death through zinc toxicity. Secondly, the compounds exert their effect in a bacterial-specific manner as an ionophore by depolarising the proton motive force (pmf). Finally, zinc-chelation by the compound in the external media limits the amount of bio-available zinc, leading to extracellular zinc starvation of the bacterium.
It is thought that zinc ionophores translocate protons (H+) in exchange for metal ions (M+) across cell membranes (
All quinoline sulfonamide compounds synthesised to date have been examined for their inhibitory properties against the three-major mastitis-causing microorganisms in New Zealand, these being S. uberis, S. aureus, or E. coli. Minimum inhibitory concentrations were determined, initially in the absence of any additional zinc (above that contained in the media), and with an additional 50 μM zinc (zinc sulfate). MIC data is summarised in Table 1. In addition to the inhibitory activity of the quinoline sulfonamide compounds, specific compounds were assessed for their ability to kill mastitis-causing microorganisms as shown in Table 2. It is anticipated that the bacterial strains potentially inhibited by compounds of the invention include other members of the Enterobactericeae, Staphylococcaceae, and Streptococcaceae families.
Any reference to prior art documents in this specification is not to be considered an admission that such prior art is widely known or forms part of the common general knowledge in the field.
As used in this specification, the words “comprises”, “comprising”, and similar words, are not to be interpreted in an exclusive or exhaustive sense. In other words, they are intended to mean “Including, but not limited to”.
The invention is further described with reference to the following examples. It will be appreciated that the invention as claimed is not intended to be limited in any way by these examples.
A solution of 8-amino-2-methylquinoline (10.0 g, 63.2 mmol), 4-(trifluoromethyl)benzenesulfonyl chloride (17.0 g, 69.5 mmol) and triethylamine (10.5 mL, 75.8 mmol) in dichloromethane (100 mL) was stirred at room temperature for 18 h. The mixture was then diluted with water (100 mL), the pH adjusted to pH 6-7 using aqueous phosphate buffer solution (0.5 M, pH 7) and the separated aqueous layer further extracted with dichloromethane (2×50 mL). The combined organic layers were further washed with aqueous phosphate buffer solution (0.5 M, pH 7) (50 mL), dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo to afford compound (ZDR018) as a pale grey solid (22.40 g), which was used without further purification. 1H NMR (300 MHz, CDCl3) δ 2.68 (3H, s), 7.28 (1H, d, J=8.4 Hz), 7.37 (1H, t, J=7.4 Hz), 7.45 (1H, dd, J=7.4 and 1.4 Hz), 7.61 (2H, d, J=8.2 Hz), 7.79 (1H, dd, J=7.4 and 1.4 Hz), 7.98 (1H, d, J=8.4 Hz), 8.01 (2H, d, J=8.2 Hz); ESI-MS: m/z calcd for C17H13F3N2O2S: 366.1; found [M+H]+: 367.1.
A solution of compound (ZDR018) (22.40 g) and selenium dioxide (7.45 g, 67.2 mmol) In 1,4-dioxane (400 mL) was heated at 85° C. for 10 h. The mixture was allowed to cool to room temperature then filtered through Celite®, and the filtrate concentrated in vacuo. Purification by flash chromatography (petroleum ether/ethyl acetate, 4:1→2:1→1:1) afforded compound (ZDR019) as an off-white solid (18.50 g, 48.6 mmol, 77% over 2 steps). 1H NMR (300 MHz, CDCl3) δ 7.58-7.63 (2H, m), 7.68 (2H, d, J=8.4 Hz), 7.93-7.96 (1H, m), 8.06 (1H, d, J=8.4 Hz), 8.09 (2H, d, J=8.4 Hz), 8.31 (1H, d, J=8.4 Hz), 9.21 (1H, br s), 10.20 (1H, s); ESI-MS: m/z calcd for C17H11F3N2O3S: 380.0; found [M+H]+: 381.1.
A solution of compound (ZDR019) (3.0 g, 7.88 mmol), dimethylamine hydrochloride (1.92 g, 23.6 mmol), sodium triacetoxyborohydride (3.32 g, 15.7 mmol) and N,N-diisopropylethylamine (4.8 mL, 27.5 mmol) in 1,2-dichloroethane (150 mL) was stirred at room temperature for 18 h. The reaction was quenched through the addition of water (100 mL) and the pH adjusted to pH 6-7 using aqueous phosphate buffer solution (0.5 M, pH 7). The mixture was then diluted with dichloromethane (100 mL) and the separated aqueous layer further extracted with dichloromethane (2×50 mL). The combined organic layers were washed with aqueous phosphate buffer solution (0.5 M, pH 7) (100 mL), dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (dichloromethane/methanol, 20:1→10:1→7:1) afforded compound (ZDR022) as a white solid (2.40 g, 5.86 mmol, 74%). 1H NMR (300 MHz, CDCl3) δ 2.32 (6H, s), 3.77 (2H, s), 7.40-7.48 (2H, m), 7.52 (1H, d, J=8.4 Hz), 7.57 (2H, d, J=8.3 Hz), 7.86 (1H, dd, J=7.3 and 1.6 Hz), 8.00 (2H, d, J=8.3 Hz), 8.07 (1H, d, 8.4 Hz); 13C NMR (75 MHz, CDCl3) δ 45.3 (CH3), 65.5 (CH2), 116.7 (CH), 122.1 (CH), 122.9 (CH), 123.2 (C, q, J=273 Hz), 126.0 (CH, q, J=3.6 Hz), 126.6 (CH), 127.4 (C), 127.7 (CH), 133.2 (C), 134.4 (C, q, J=33 Hz), 137.0 (CH), 138.2 (C), 143.2 (C), 157.8 (C). 1H NMR (400 MHz, d6-DMSO) δ 2.14 (6H, s), 3.59 (2H, s), 7.50 (1H, t, J=7.8 Hz), 7.57 (1H, d, J=8.5 Hz), 7.67-7.71 (2H, m), 7.80 (2H, d, J=8.2 Hz), 8.02 (2H, d, J=8.2 Hz), 8.25 (1H, d, J=8.5 Hz); 13C NMR (100 MHz, d6-DMSO) δ 45.1 (CH3), 65.1 (CH2), 120.2 (CH), 121.5 (CH), 123.2 (C, q, J=273 Hz), 124.1 (CH), 126.0 (CH), 127.2 (C), 127.7 (CH), 132.3 (C, q, J=32 Hz), 132.9 (C), 136.6 (CH), 139.0 (C), 143.9 (C), 159.2 (C); ESI-MS: m/z calcd for C19H18F3N3O2S: 409.1; found [M+H]+: 410.2.
To a solution of compound (ZDR022) (1.00 g, 2.44 mmol) in 1,4-dioxane (10 mL) was added aqueous hydrochloric acid (20 mL, 0.1 M), and the mixture lyophilized to dryness to afford compound (ZDR022 HCl) as a white solid (1.08 g, 2.44 mmol, quant.). 1H NMR (400 MHz, d6-DMSO) δ 2.83 (6H, s), 4.70 (2H, s), 7.56-7.61 (2H, m), 7.73 (1H, dd, J=8.4 and 1.0 Hz), 7.85-7.89 (3H, m), 8.13 (2H, d, J=8.2 Hz), 8.43 (1H, d, J=8.4 Hz), 10.82 (1H, s), 11.16 (1H, s); 13C NMR (100 MHz, d6-DMSO) δ 42.7 (CH3), 60.0 (CH2), 118.8 (CH), 121.3 (CH), 123.2 (C, q, J=273 Hz), 123.5 (CH), 126.3 (CH, q, J=3.5 Hz), 127.2 (CH), 127.4 (C), 127.8 (CH), 132.5 (C, q, J=32 Hz), 133.2 (C), 138.0 (CH), 143.5 (C), 150.8 (C); ESI-MS: m/z calcd for C19H18F3N3O2S: 409.1; found [M+H]+: 410.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), methylamine (72 mg, 0.78 mmol, 33 wt. % In absolute ethanol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR024) as a pale yellow solid (65 mg, 0.16 mmol, 62%). 1H NMR (300 MHz, d6-DMSO) δ 2.54 (3H, s), 4.29 (2H, s), 7.40-7.58 (5H, m), 7.67 (1H, d, J=7.3 Hz), 7.84 (2H, J=8.1 Hz), 8.25 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C18H16F3N3O2S: 395.1; found [M+H]+: 396.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), ethylamine (51 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR025) as a pale yellow solid (71 mg, 0.17 mmol, 65%). 1H NMR (300 MHz, d6-DMSO) δ 1.24 (3H, t, J=7.2 Hz), 2.89 (2H, q, J=7.2 Hz), 4.37 (2H, s), 7.51 (1H, t, J=7.9 Hz), 7.56 (1H, d, J=8.4 Hz), 7.65 (1H, d, J=7.9 Hz), 7.76-7.81 (3H, m), 8.02 (2H, d, J=8.1 Hz), 8.34 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C19H18F3N3O2S: 409.1; found [M+H]+: 410.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), n-propylamine (64 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR026) as a pale yellow solid (79 mg, 0.19 mmol, 73%). 1H NMR (300 MHz, d6-DMSO) δ 0.89 (3H, t, J=7.2 Hz), 1.55-1.62 (2H, m), 2.67 (2H, t, J=7.2 Hz), 4.17 (2H, s), 7.42-7.70 (6H, m), 7.94 (2H, d, J=8.1 Hz), 8.25 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C20H20F3N3O2S: 423.1; found [M+H]+: 424.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), isopropylamine (64 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR027) as a pale yellow solid (67 mg, 0.16 mmol, 62%). 1H NMR (300 MHz, d6-DMSO) δ 1.11 (6H, d, J=6.3 Hz), 2.89-2.94 (1H, m), 4.10 (2H, s), 7.47 (1H, t, J=7.8 Hz), 7.55 (1H, d, J=8.4 Hz), 7.62 (1H, d, J=7.8 Hz), 7.70 (1H, dd, J=7.8 and 1.2 Hz), 7.74 (2H, d, J=8.2 Hz), 7.97 (2H, d, J=8.2 Hz), 8.26 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C20H20F3N3O2S: 423.1; found [M+H]+: 424.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), diethylamine (81 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR028) as a pale yellow solid (89 mg, 0.20 mmol, 77%). 1H NMR (300 MHz, d6-DMSO) δ 0.97 (6H, t, J=7.1 Hz), 2.48-2.51 (4H, m), 3.74 (2H, s), 7.51 (1H, t, J=7.7 Hz), 7.63 (1H, d, J=8.5 Hz), 7.69-7.71 (2H, m), 7.82 (2H, d, J=8.3 Hz), 8.01 (2H, d, J=8.3 Hz), 8.27 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C21H22F3N3O2S: 437.1; found [M+H]+: 438.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), morpholine (68 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 30:1) afforded compound (ZDR029) as a white solid (82 mg, 0.18 mmol, 69%). 1H NMR (300 MHz, CDCl3) δ 2.47-2.50 (4H, m), 3.71-3.75 (4H, m), 3.76 (2H, s), 7.40-7.51 (2H, m), 7.59 (2H, d, J=8.2 Hz), 7.64 (1H, d, J=8.4 Hz), 7.83 (1H, dd, J=7.4 and 1.5 Hz), 8.00 (2H, d, J=8.2 Hz), 8.07 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C21H20F3N3O3S: 451.1; found [M+H]+: 452.0.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), N,N-dimethylethylenediamine (86 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→10:1) afforded compound (ZDR030) as a pale brown solid (61 mg, 0.13 mmol, 50%). 1H NMR (300 MHz, CDCl3) δ 2.41 (6H, s), 2.76 (2H, t, J=5.8 Hz), 2.88 (2H, t, J=5.8 Hz), 4.12 (2H, s), 7.32-7.44 (3H, m), 7.57 (2H, d, J=8.2 Hz), 7.71-7.74 (1H, m), 7.98-8.04 (3H, m); ESI-MS: m/z calcd for C21H23F3N4O2S: 452.1; found [M+H]+: 453.0.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), ethanolamine (47 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→10:1) afforded compound (ZDR031) as a pale yellow solid (64 mg, 0.15 mmol, 58%). 1H NMR (300 MHz, d6-DMSO) δ 2.82 (2H, t, J=5.6 Hz), 3.64 (2H, t, J=5.6 Hz), 4.20 (2H, s), 7.40-7.68 (6H, m), 7.90 (2H, d, J=8.2 Hz), 8.23 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C19H18F3N3O3S: 425.1; found [M+H]+: 426.0.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), piperidine (77 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→10:1) afforded compound (ZDR033) as a white solid (88 mg, 0.19 mmol, 73%). 1H NMR (300 MHz, CDCl3) δ 1.46-1.54 (2H, m), 1.59-1.69 (4H, m), 2.44-2.52 (4H, m), 3.76 (2H, s), 7.49-7.50 (2H, m), 7.58-7.63 (3H, m), 7.83 (1H, dd, J=7.3 and 1.4 Hz), 8.01 (2H, d, J=8.2 Hz), 8.05 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C22H22F3N3O2S: 449.1; found [M+H]+: 450.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 2-(aminomethyl)pyridine (81 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (petroleum ether/ethyl acetate, 1:1) afforded compound (ZDR035) as a pale yellow solid (85 mg, 0.18 mmol, 69%). 1H NMR (300 MHz, CDCl3) δ 3.95 (2H, s), 4.11 (2H, s), 7.20-7.26 (1H, m), 7.31 (1H, d, J=7.5 Hz), 7.40-7.51 (3H, m), 7.54 (2H, d, J=8.2 Hz), 7.65-7.70 (1H, m), 7.86 (1H, dd, J=7.5 and 1.4 Hz), 7.97 (2H, d, J=8.2 Hz), 8.05 (1H, d, J=8.4 Hz), 8.71-8.51 (1H, m); ESI-MS: m/z calcd for C23H19F3N4O2S: 472.1; found [M+H]+: 473.0.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), N,N′-dimethylethylenediamine (14 μL, 0.13 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR036) as a pale yellow solid (40 mg, 0.05 mmol, 38%). 1H NMR (300 MHz, CDCl3) δ 2.25 (2H, d, J=10.5 Hz), 2.31 (6H, s), 2.80 (2H, d, J=10.5 Hz), 3.83 (2H, d, J=15.4 Hz), 4.93 (2H, d, J=15.4 Hz), 7.14-7.30 (10H, m), 7.41 (2H, d, J=8.4 Hz), 7.69 (4H, d, J=8.3 Hz), 8.27 (2H, d, J=8.4 Hz); ESI-MS: m/z calcd for C3H34F6N6O4S2: 816.2; found [M+H]+: 817.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), methylamine (12 mg, 0.13 mmol, 33 wt. % in absolute ethanol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 30:1) afforded compound (ZDR037) as a pale yellow solid (45 mg, 0.06 mmol, 46%). 1H NMR (400 MHz, CDCl3) δ 2.25 (3H, s), 3.87 (4H, s), 7.43 (2H, t, J=7.8 Hz), 7.49 (2H, dd, J=7.8 and 1.4 Hz), 7.55 (4H, d, J=8.3 Hz), 7.67 (2H, d, J=8.3 Hz), 7.82 (2H, dd, J=7.8 and 1.4 Hz), 7.99 (4H, d, J=8.3 Hz), 8.10 (2H, d, J=8.3 Hz); ESI-MS: m/z calcd for C35H27F6N5O4S2: 759.1; found [M+H]+: 760.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), glycine tert-butyl ester hydrochloride (132 mg, 0.78 mmol), triethylamine (109 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 30:1) afforded compound (ZDR041) as a pale yellow solid (94 mg, 0.19 mmol, 73%). 1H NMR (300 MHz, CDCl3) δ 1.49 (9H, s), 3.38 (2H, s), 4.06 (2H, s), 7.41-7.50 (3H, m), 7.61 (2H, d, J=8.2 Hz), 7.83 (1H, dd, J=7.4 and 1.5 Hz), 7.01-8.07 (3H, m); ESI-MS: m/z calcd for C23H24F3N3O4S: 495.1; found [M+H]+: 496.0.
A solution of compound (ZDR041) (50 mg, 0.10 mmol) in trifluoroacetic acid-dichloromethane (3 mL, 50% v/v) was stirred at room temperature for 36 h. The solvent was removed in vacuo to afford compound (ZDR043) as a pale brown solid (53 mg, 0.10 mmol, quant.), which was used without further purification. 1H NMR (300 MHz, d6-DMSO) δ 4.01 (2H, s), 4.62 (2H, s), 7.55-7.60 (1H, m), 7.58 (1H, d, J=8.4 Hz), 7.72 (1H, dd, J=7.9 and 1.0 Hz), 7.85 (2H, d, J=8.2 Hz), 7.89 (1H, dd, J=7.9 and 1.0 Hz), 8.07 (2H, d, J=8.2 Hz), 8.42 (1H, d, J=8.4 Hz), 9.78 (2H, br s), 10.62 (1H, s); ESI-MS: m/z calcd for C19H16F3N3O4S: 439.1; found [M+H]+: 440.0.
A solution of compound (ZDR019) (0.25 mg, 0.65 mmol) and benzhydrazide (89 mg, 0.65 mmol) in aqueous ethanol (20 mL, 90% v/v) was stirred at 70° C. for 18 h. The mixture was allowed to cool to room temperature and the precipitated product was collected by filtration and washed with ice-cold ethanol (2×2 mL) to afford compound (ZDR045) as a white solid (250 mg, 0.50 mmol, 77%), which was used without further purification. 1H NMR (300 MHz, d6-DMSO) δ 7.55-7.64 (4H, m), 7.71 (1H, dd, J=7.8 and 1.1 Hz), 7.78 (1H, d, J=7.8 Hz), 7.84 (2H, d, J=8.3 Hz), 7.90-8.10 (5H, m), 8.37 (1H, d, J=8.5 Hz), 8.51 (1H, s), 10.40 (1H, s), 12.23 (1H, s); ESI-MS: m/z calcd for C24H17F3N4O3S: 498.1; found [M+H]+: 499.0.
A similar procedure to that described for the preparation of compound (ZDR045) was followed using compound (ZDR019) (0.25 mg, 0.65 mmol) and thiosemicarbazide (59 mg, 0.65 mmol) in ethanol (30 mL) to afford compound (ZDR046) as a white solid (210 mg, 0.46 mmol, 71%), which was used without further purification. 1H NMR (300 MHz, d6-DMSO) δ 7.52 (1H, t, J=7.8 Hz), 7.64 (1H, d, J=7.8 Hz), 7.71 (1H, d, J=7.8 Hz), 7.84 (2H, d, J=8.3 Hz), 8.03-8.10 (3H, m), 8.39-8.43 (2H, m), 10.43 (1H, s), 11.87 (1H, s); ESI-MS: m/z calcd for C18H14F3N5O2S2: 453.1; found [M+H]+: 454.0.
A solution of 8-amino-2-methylquinoline (11.66 g, 73.6 mmol) and di-tert-butyl dicarbonate (32.2 g, 147.3 mmol) in 1,4-dioxane (200 mL) was heated at 90° C. for 48 h, and the solvent then removed in vacuo. Purification by flash chromatography (petroleum ether/ethyl acetate, 100:1→20:1), followed by crystallisation from petroleum ether/ethanol (10:1 v/v), afforded compound (ZDR056) as a yellow solid (14.62 g, 56.6 mmol, 76%). 1H NMR (400 MHz, CDCl3) δ 1.59 (9H, s), 2.74 (3H, s), 7.29 (1H, d, J=8.4 Hz), 7.35-7.38 (1H, m), 7.43 (1H, t, J=7.5 Hz), 8.00 (1H, d, J=8.4 Hz), 8.37 (1H, d, J=7.5 Hz), 9.05 (1H, brs).
A solution of compound (ZDR056) (4.34 g, 16.8 mmol) and selenium dioxide (3.36 g, 30.2 mmol) in 1,4-dioxane (200 mL) was heated at 85° C. for 18 h. The mixture was then filtered through a pad of Celite® and the solvent removed in vacuo. Purification by flash chromatography (dichloromethane) afforded compound (ZDR057) as a yellow solid (3.43 g, 12.5 mmol, 74%). 1H NMR (400 MHz, CDCl3) δ 1.61 (9H, s), 7.50 (1H, dd, J=7.9 and 1.7 Hz), 7.66 (1H, t, J=7.9 Hz), 8.05 (1H, d, J=8.4 Hz), 8.29 (1H, d, J=8.4 Hz), 8.52 (1H, d, J=7.9 Hz), 8.99 (1H, brs), 10.25 (1H, s).
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR057) (7.0 g, 25.7 mmol), dimethylamine hydrochloride (4.19 g, 51.4 mmol), sodium triacetoxyborohydride (10.90 g, 51.4 mmol) and N,N-diisopropylethylamine (9.0 mL, 51.4 mmol) in 1,2-dichloroethane (350 mL). Purification by flash chromatography (dichloromethane/methanol, 10:1) afforded compound (ZDR058) as a yellow oil (6.70 g, 22.2 mmol, 86%). 1H NMR (400 MHz, CDCl3) δ 1.59 (9H, s), 2.49 (6H, s), 4.00 (2H, s), 7.41 (1H, dd, J=7.8 and 1.5 Hz), 7.49 (1H, t, J=7.8 Hz), 7.66 (1H, d, J=8.4 Hz), 8.14 (1H, d, J=8.4 Hz), 8.41 (1H, d, J=7.8 Hz), 9.03 (1H, brs).
A solution of compound (ZDR058) (1.50 g, 4.98 mmol) in trifluoroacetic acid-dichloromethane (3 mL, 50% v/v) was stirred at room temperature for 3 h, and the solvent then removed in vacuo. The resulting residue was taken up in dichloromethane (100 mL) and washed with aqueous sodium bicarbonate (2×100 mL), and the separated aqueous layers then further extracted with dichloromethane (50 mL). The combined organic layers were dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (dichloromethane/methanol, 50:1→10:1) afforded compound (ZDR059) as a yellow solid (477 mg, 2.36 mmol, 47%). 1H NMR (300 MHz, d4-MeOH) δ 2.31 (6H, s), 3.73 (2H, s), 6.94 (1H, d, J=7.8 Hz), 7.08 (1H, d, J=7.8 Hz), 7.26 (1H, t, J=7.8 Hz), 7.36 (1H, d, J=8.4 Hz), 8.03 (1H, d, J=8.4 Hz).
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), benzenesulfonyl chloride (62 μL, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR061) as a tan solid (104 mg, 0.30 mmol, 68%). 1H NMR (300 MHz, CDCl3) δ 2.28 (6H, s), 3.70 (2H, s), 7.29-7.45 (5H, m), 7.57 (1H, d, J=8.4 Hz), 7.80 (1H, dd, J=7.0 and 1.8 Hz), 7.86-7.90 (2H, m), 8.04 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C18H19N3O2S: 341.1; found [M+H]+: 342.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 4-toluenesulfonyl chloride (93 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR062) as a tan solid (101 mg, 0.28 mmol, 63%). 1H NMR (300 MHz, CDCl3) δ 2.26 (3H, s), 2.29 (6H, s), 3.70 (2H, s), 7.11 (2H, d, J=8.0 Hz), 7.35-7.45 (2H, m), 7.57 (1H, d, J=8.4 Hz), 7.74-7.80 (3H, m), 8.04 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C19H21N3O2S: 355.1; found [M+H]+:356.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 4-methoxybenzenesulfonyl chloride (101 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR063) as an off-white solid (77 mg, 0.20 mmol, 45%). 1H NMR (300 MHz, CDCl3) δ 2.28 (6H, s), 3.70 (2H, s), 3.72 (3H, s), 6.76 (2H, d, J=8.9 Hz), 7.35-7.44 (2H, m), 7.57 (1H, d, J=8.4 Hz), 7.75-7.83 (3H, m), 8.03 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C19H21N3O3S: 371.1; found [M+H]+: 372.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 4-chlorobenzenesulfonyl chloride (103 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR064) as a beige solid (96 mg, 0.25 mmol, 56%). 1H NMR (300 MHz, CDCl3) δ 2.30 (6H, s), 3.71 (2H, s), 7.27-7.31 (2H, m), 7.39-7.50 (2H, m), 7.60 (1H, d, J=8.4 Hz), 7.79-7.83 (3H, m), 8.08 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C18H18ClN3O2S: 375.1; found [M+H]+: 376.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 4-fluorobenzenesulfonyl chloride (95 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR065) as a tan solid (100 mg, 0.27 mmol, 61%). 1H NMR (300 MHz, CDCl3) δ 2.28 (6H, s), 3.70 (2H, s), 6.94-7.00 (2H, m), 7.37-7.47 (2H, m), 7.57 (1H, d, J=8.4 Hz), 7.80 (1H, dd, J=7.2 and 1.5 Hz), 7.86-7.91 (2H, m), 8.05 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C18H18FN3O2S: 359.1; found [M+H]+: 360.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 4-(trifluoromethoxy)benzenesulfonyl chloride (127 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR066) as a beige solid (96 mg, 0.22 mmol, 50%). 1H NMR (300 MHz, CDCl3) δ 2.28 (6H, s), 3.70 (2H, s), 7.10-7.14 (2H, m), 7.38-7.49 (2H, m), 7.56 (1H, d, J=8.4 Hz), 7.82 (1H, dd, J=7.3 and 1.5 Hz), 7.89-7.94 (2H, m), 8.06 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C19H18F3N3O3S: 425.1; found [M+H]+: 426.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 4-nitrobenzenesulfonyl chloride (108 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) In dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR067) as an orange solid (80 mg, 0.20 mmol, 45%). 1H NMR (300 MHz, CDCl3) δ 2.30 (6H, s), 3.72 (2H, s), 7.41-7.53 (2H, m), 7.57 (1H, d, J=8.4 Hz), 7.86 (1H, dd, J=7.4 and 1.4 Hz), 8.05-8.09 (3H, m), 8.13-8.17 (2H, m); ESI-MS: m/z calcd for C18H18N4O4S: 386.1; found [M+H]+: 387.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 4-cyanobenzenesulfonyl chloride (98 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR068) as a pale orange solid (107 mg, 0.29 mmol, 65%). 1H NMR (300 MHz, CDCl3) δ 2.30 (6H, s), 3.71 (2H, s), 7.39-7.62 (5H, m), 7.82 (1H, dd, J=7.4 and 1.4 Hz), 7.97-8.01 (2H, m), 8.07 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C19H18N4O2S: 366.1; found [M+H]+: 367.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 4-chlorosulfonylbenzoic acid methyl ester (114 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR069) as a beige solid (88 mg, 0.22 mmol, 50%). 1H NMR (300 MHz, CDCl3) δ 2.28 (6H, s), 3.70 (2H, s), 3.85 (3H, s), 7.37-7.47 (2H, m), 7.56 (1H, d, J=8.4 Hz), 7.82 (1H, dd, J=7.4 and 1.5 Hz), 7.91-7.98 (4H, m), 8.05 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C20H21N3O4S: 399.1; found [M+H]+: 400.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 4-acetylbenzenesulfonyl chloride (107 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR070) as a tan solid (66 mg, 0.17 mmol, 38%). 1H NMR (300 MHz, CDCl3) δ 2.28 (6H, s), 2.51 (3H, s), 3.70 (2H, s), 7.37-7.47 (2H, m), 7.56 (1H, d, J=8.4 Hz), 7.80-7.87 (3H, m), 7.94-7.99 (2H, m), 8.05 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C20H21N3O3S: 383.1; found [M+H]+: 384.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 4-(methylsulfonyl)benzenesulfonyl chloride (124 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR071) as an off-white solid (83 mg, 0.19 mmol, 43%). 1H NMR (300 MHz, CDCl3) δ 2.29 (6H, s), 2.97 (3H, s), 3.70 (2H, s), 7.39-7.51 (2H, m), 7.58 (1H, d, J=8.4 Hz), 7.83 (1H, dd, J=7.4 and 1.5 Hz), 7.86-7.91 (2H, m), 8.06-8.09 (3H, m); ESI-MS: m/z calcd for C19H21N3O4S2: 419.1; found [M+H]+: 420.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 4-acetamidobenzenesulfonyl chloride (114 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR072) as a pale yellow solid (60 mg, 0.15 mmol, 34%). 1H NMR (300 MHz, CDCl3) δ 2.10 (3H, s), 2.28 (6H, s), 3.70 (2H, s), 7.34-7.48 (41, m), 7.56 (1H, d, J=8.4 Hz), 7.73-7.80 (3H, m), 8.04 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C20H22N4O3S: 398.1; found [M+H]+: 399.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 4-(chlorosulfonyl)benzamide (107 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR073) as a beige solid (70 mg, 0.18 mmol, 40%). 1H NMR (300 MHz, CDCl3) δ 2.30 (6H, s), 3.72 (2H, s), 7.37-7.48 (2H, m), 7.56 (1H, d, J=8.4 Hz), 7.70-7.74 (2H, m), 7.81 (1H, dd, J=7.4 and 1.4 Hz), 7.91-7.95 (2H, m), 8.06 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C19H20N4O3S: 384.1; found [M+H]+: 385.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.49 mmol), 3-(trifluoromethyl)benzenesulfonyl chloride (87 μL, 0.54 mmol) and triethylamine (76 μL, 0.54 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR074) as a pale orange solid (97 mg, 0.23 mmol, 46%). 1H NMR (300 MHZ, CDCl3) δ 2.27 (6H, s), 3.68 (2H, s), 7.40-7.50 (3H, m), 7.55-7.64 (2H, m), 7.84 (1H, dd, J=7.3 and 1.5 Hz), 8.00-8.13 (3H, m); ESI-MS: m/z calcd for C19H18F3N3O2S: 409.1; found [M+H]+: 410.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.49 mmol), 2-(trifluoromethyl)benzenesulfonyl chloride (84 μL, 0.54 mmol) and triethylamine (76 μL, 0.54 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR075) as a pale orange solid (70 mg, 0.17 mmol, 34%). 1H NMR (300 MHz, CDCl3) δ 2.29 (6H, s), 3.70 (2H, s), 7.37-7.46 (2H, m), 7.52-7.56 (2H, m), 7.61 (1H, d, J=8.5 Hz), 7.75-7.78 (1H, m), 7.85 (1H, dd, J=7.2 and 1.7 Hz), 8.05 (1H, d, J=8.5 Hz), 8.18-8.21 (1H, m); ESI-MS: m/z calcd for C19H18F3N3O2S: 409.1; found [M+H]+: 410.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.49 mmol), 3-cyanobenzenesulfonyl chloride (110 mg, 0.54 mmol) and triethylamine (76 μL, 0.54 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR076) as a pale orange solid (93 mg, 0.25 mmol, 51%). 1H NMR (300 MHz, CDCl3) δ 2.21 (6H, s), 3.72 (2H, s), 7.41-7.52 (3H, m), 7.59 (1H, d, J=8.4 Hz) 7.65-7.68 (1H, m), 7.82 (1H, dd, J=7.4 and 1.4 Hz), 8.06-8.09 (2H, m), 8.17-8.18 (1H, m); ESI-MS: m/z calcd for C19H18N4O2S: 366.1; found [M+H]+: 367.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.49 mmol), 2-cyanobenzenesulfonyl chloride (110 mg, 0.54 mmol) and triethylamine (76 μL, 0.54 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→10:1) afforded compound (ZDR077) as a pale orange solid (117 mg, 0.31 mmol, 63%). 1H NMR (300 MHz, CDCl3) δ 2.32 (6H, s), 3.80 (2H, s), 7.34-7.70 (6H, m), 7.74 (1H, dd, J=7.6 and 1.3 Hz), 8.05 (1H, d, J=8.4 Hz), 8.14 (1H, dd, J=7.6 and 1.3 Hz); ESI-MS: m/z calcd for C19H18N4O2S: 366.1; found [M+H]+: 367.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.49 mmol), methanesulfonyl chloride (42 μL, 0.54 mmol) and triethylamine (76 μL, 0.54 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR078) as a pale yellow solid (99 mg, 0.35 mmol, 71%). 1H NMR (300 MHz, CDCl3) δ 2.34 (6H, s), 3.03 (3H, s), 3.77 (2H, s), 7.47-7.54 (2H, s), 7.62 (1H, d, J=8.4 Hz), 7.81 (1H, dd, J=7.2 and 1.6 Hz), 8.13 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C13H17N3O2S: 279.1; found [M+H]+: 280.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.49 mmol), trifluoromethanesulfonyl chloride (58 μL, 0.54 mmol) and triethylamine (76 μL, 0.54 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR079) as a beige solid (82 mg, 0.24 mmol, 48%). 1H NMR (300 MHz, d4-MeOH) δ 2.98 (6H, s), 4.57 (2H, s), 7.33 (1H, d, J=8.4 Hz), 7.42-7.46 (2H, m), 7.76-7.81 (1H, m), 8.22 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C13H14F3N3O2S: 333.1; found [M+H]+: 334.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.49 mmol), 2-thiophenesulfonyl chloride (99 mg, 0.54 mmol) and triethylamine (76 μL, 0.54 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR080) as a beige solid (93 mg, 0.26 mmol, 53%). 1H NMR (300 MHz, CDCl3) δ 2.28 (6H, s), 3.70 (2H, s), 6.85-6.88 (1H, m), 7.36-7.47 (3H, m), 7.56-7.59 (2H, m), 7.87 (1H, dd, J=7.1 and 1.8 Hz), 8.06 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C16H17N3O2S2: 347.1; found [M+H]+: 348.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.49 mmol), 3-thiophenesulfonyl chloride (99 mg, 0.54 mmol) and triethylamine (76 μL, 0.54 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR081) as a tan solid (87 mg, 0.25 mmol, 51%). 1H NMR (300 MHz, CDCl3) δ 2.30 (6H, s), 3.71 (2H, s), 7.18 (1H, dd, J=5.1 and 3.0 Hz), 7.28 (1H, dd, J=5.1 and 1.2 Hz), 7.39-7.49 (2H, m), 7.59 (1H, d, J=8.4 Hz), 7.83 (1H, dd, J=7.1 and 1.7 Hz), 7.97 (1H, d, J=3.0 and 1.2 Hz), 8.07 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C16H17N3O2S2: 347.1; found [M+H]+: 348.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.49 mmol), 3,5-dimethylisoxazole-4-sulfonyl chloride (105 mg, 0.54 mmol) and triethylamine (76 μL, 0.54 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR082) as a pale orange solid (95 mg, 0.26 mmol, 53%). 1H NMR (300 MHz, CDCl3) δ 2.29 (6H, s), 2.38 (3H, s), 2.53 (3H, s), 3.70 (2H, s), 7.42 (1H, t, J=7.8 Hz), 7.53 (1H, dd, J=7.8 and 1.3 Hz), 7.62 (1H, d, J=8.4 Hz), 7.77 (1H, dd, J=7.8 and 1.3 Hz), 8.10 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C17H20N4O3S: 360.1; found [M+H]+: 361.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 3-chlorobenzenesulfonyl chloride (68 μL, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR084) as a pale yellow solid (109 mg, 0.28 mmol, 63%). 1H NMR (300 MHz, CDCl3) δ 2.31 (6H, s), 3.74 (2H, s), 7.25 (1H, t, J=7.8 Hz), 7.35-7.50 (3H, m), 7.57 (1H, d, J=8.4 Hz), 7.73-7.76 (1H, m), 7.82 (1H, dd, J=7.2 and 1.6 Hz), 7.90-7.92 (1H, m), 8.07 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C18H18ClN3O2S: 375.1; found [M+H]+: 376.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 3-(trifluoromethoxy)benzenesulfonyl chloride (83 μL, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR085) as a pale orange solid (101 mg, 0.23 mmol, 52%). 1H NMR (300 MHz, CDCl3) δ 2.28 (6H, s), 3.70 (2H, s), 7.20-7.27 (1H, m), 7.33-7.51 (3H, m), 7.58 (1H, d, J=8.4 Hz), 7.69-7.73 (1H, m), 7.79-7.85 (2H, m), 8.06 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C19H18F3N3O3S: 425.1; found [M+H]+: 426.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), cyclopropylamine (54 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1) afforded compound (ZDR086) as a pale yellow solid (70 mg, 0.16 mmol, 61%). 1H NMR (300 MHz, CDCl3) δ 0.43-0.47 (4H, m), 2.15-2.19 (1H, m), 4.10 (2H, s), 7.38-7.50 (3H, m), 7.59 (2H, d, J=8.2 Hz), 7.82 (1H, dd, J=7.3 and 1.4 Hz), 8.00 (2H, d, J=8.2 Hz), 8.04 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C20H18F3N3O2S: 421.1; found [M+H]+: 422.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), cyclopropylmethylamine (68 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→10:1) afforded compound (ZDR087) as a pale yellow solid (83 mg, 19 mmol, 73%). 1H NMR (300 MHz, CDCl3) δ 0.18-0.22 (2H, m), 0.48-0.54 (2H, m), 1.01-1.14 (1H, m), 2.77 (2H, d, J=7.0 Hz), 4.35 (2H, s), 7.33-7.44 (5H, m), 7.70 (1H, dd, J=7.0 and 1.9 Hz), 7.86 (2H, d, J=8.2 Hz), 8.03 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C21H20F3N3O2S: 435.1; found [M+H]+: 436.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), thiomorpholine (79 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1) afforded compound (ZDR088) as a pale yellow solid (55 mg, 0.11 mmol, 42%). 1H NMR (300 MHz, CDCl3) δ 2.65-2.78 (8H, m), 3.76 (2H, s), 7.39-7.50 (2H, m), 7.57-7.62 (3H, m), 7.82 (1H, dd, J=7.3 and 1.5 Hz), 8.00 (2H, d, J=8.1 Hz), 8.05 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C21H20F3N3O2S2: 467.1; found [M+H]+: 468.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 1-methylpiperazine (87 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1→10:1) afforded compound (ZDR089) as a white solid (77 mg, 0.16 mmol, 61%). 1H NMR (300 MHz, CDCl3) δ 2.31 (3H, s), 2.40-2.60 (8H, m), 3.76 (2H, s), 7.39-7.50 (2H, m), 7.57-7.63 (3H, in), 7.82 (1H, dd, J=7.3 and 1.5 Hz), 7.99 (2H, d, J=8.1 Hz), 8.05 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C22H23F3N4O2S: 464.1; found [M+H]+:465.1.
A solution of (ZDR019) (100 mg, 0.26 mmol), 3-(dimethylamino)-1-propylamine (99 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL) was stirred at room temperature for 18 h, and the solvent removed in vacuo. Purification by RP-HLPC (10% to 20% A/B gradient over 20 min, where A=water+0.1% trifluoroacetic acid and B=acetonitrile+0.1% trifluoroacetic acid) afforded compound (ZDR090) as a white solid (36 mg, 0.05 mmol, 19%). 1H NMR (300 MHz, CDCl3) δ 1.79 (2H, t, J=7.0 Hz), 2.27 (6H, s), 2.43 (2H, t, J=7.0 Hz), 2.81 (2H, t, J=7.0 Hz), 4.10 (2H, s), 7.37-7.47 (3H, m), 7.56 (2H, d, J=8.2 Hz), 7.77 (1H, dd, J=7.3 and 1.5 Hz), 8.00 (2H, d, J=8.2 Hz), 8.05 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C22H25F3N4O2S: 466.2; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 3-amino-1-propanol (60 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→15:1→10:1) afforded compound (ZDR091) as a white solid (60 mg, 0.13 mmol, 50%). 1H NMR (300 MHz, d6-DMSO) δ 1.76-1.83 (2H, m), 2.87 (2H, t, J=6.5 Hz), 3.53 (2H, t, J=6.5 Hz), 4.25 (2H, s), 7.38 (1H, t, J=7.7 Hz), 7.44-7.58 (4H, m), 7.63 (1H, dd, J=7.4 and 1.1 Hz), 7.83 (2H, d, J=8.0 Hz), 8.19 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C20H20F3N3O3S: 439.1; found [M+H]+:440.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), serinol (71 mg, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→10:1→8:1) afforded compound (ZDR092) as a pale yellow solid (50 mg, 0.10 mmol, 38%). 1H NMR (300 MHz, CDCl3) δ 3.06-3.18 (1H, m), 3.79-3.99 (4H, m), 4.32 (2H, s), 7.24-7.41 (3H, m), 7.55 (2H, d, J=8.2 Hz), 7.75 (1H, dd, J=7.0 and 1.8 Hz), 7.97 (1H, d, J=8.4 Hz), 8.02 (2H, d, J=8.2 Hz); ESI-MS: m/z calcd for C20H20F3N3O4S: 455.1; found [M+H]+: 456.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), (±)-3-amino-1,2-propanediol (71 mg, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→10:1→48:1) afforded compound (ZDR093) as a pale yellow solid (60 mg, 0.13 mmol, 50%). 1H NMR (300 MHz, CDCl3) δ 2.85-3.00 (2H, m), 3.65-3.82 (2H, m), 4.06-4.20 (3H, m), 7.20 (1H, d, J=8.4 Hz), 7.29-7.37 (2H, m), 7.46 (2H, d, J=8.2 Hz), 7.71 (1H, dd, J=7.0 and 1.9 Hz), 7.90 (1H, d, J=8.4 Hz), 7.98 (2H, d, J=8.2 Hz); ESI-MS: m/z calcd for C20H20F3N3O4S: 455.1; found [M+H]+: 456.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), diethanolamine (78 mg, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 30:1→20:1→15:1) afforded compound (ZDR094) as a white solid (30 mg, 0.06 mmol, 23%). 1H NMR (300 MHz, CDCl3) δ 2.87 (4H, t, J=5.0 Hz), 3.69 (4H, t, J=5.0 Hz), 4.04 (2H, s), 7.39-7.49 (3H, m), 7.62 (2H, d, J=8.3 Hz), 7.85 (1H, dd, J=7.2 and 1.5 Hz), 8.03-8.09 (3H, m); ESI-MS: m/z calcd for C21H22F3N3O4S: 469.1; found [M+H]+: 470.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 2-(2-pyridyl)ethylamine (94 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→10:1) afforded compound (ZDR095) as a pale orange solid (77 mg, 0.15 mmol, 57%). 1H NMR (300 MHz, CDCl3) δ 3.21 (2H, t, J=6.5 Hz), 3.38 (2H, t, J=6.5 Hz), 4.36 (2H, s), 7.11-7.20 (2H, m), 7.36-7.46 (3H, m), 7.54-7.63 (3H, m), 7.78 (1H, dd, J=7.2 and 1.6 Hz), 8.03-8.07 (3H, m), 8.55-8.57 (1H, m); ESI-MS: m/z calcd for C24H21F3N4O2S: 486.1; found [M+H]+: 487.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), di-(2-picoyl)amine (141 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR096) as a tan solid (66 mg, 0.11 mmol, 42%). 1H NMR (300 MHz, CDCl3) δ 3.86 (4H, s), 3.94 (2H, s), 7.15-7.26 (2H, m), 7.37-7.47 (2H, m), 7.52-7.59 (5H, m), 7.66-7.71 (2H, m), 7.87 (1H, dd, J=7.2 and 1.6 Hz), 8.00-8.05 (3H, m), 8.62-8.64 (2H, m); ESI-MS: m/z calcd for C29H24F3N5O2S: 563.2; found [M+H]+: 564.2.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), allyamine (59 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR097) as a pale yellow solid (62 mg, 0.14 mmol, 53%). 1H NMR (300 MHz, CDCl3) δ 3.35-3.38 (2H, m), 4.09 (2H, s), 5.15-5.29 (2H, m), 5.91-5.97 (1H, m), 7.37-7.48 (3H, m), 7.53 (2H, d, J=8.2 Hz), 7.95 (1H, dd, J=7.3 and 1.5 Hz), 7.93 (2H, d, J=8.2 Hz), 8.05 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C20H18F3N3O2S: 421.1; found [M+H]+: 422.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), propargylamine (50 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (petroleum ether/ethyl acetate, 1:1→1:2) afforded compound (ZDR098) as a pale yellow solid (66 mg, 0.15 mmol, 57%). 1H NMR (300 MHz, CDCl3) δ 2.32 (1H, t, J=2.4 Hz), 3.50 (2H, d, J=2.4 Hz), 4.15 (2H, s), 7.39-7.50 (3H, m), 7.59 (2H, d, J=8.2 Hz), 7.83 (1H, dd, J=7.3 and 1.5 Hz), 8.00 (2H, d, J=8.2 Hz), 8.06 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C20H16F3N3O2S: 419.1; found [M+H]+: 420.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 2-fluoroethylamine hydrochoride (77 mg, 0.78 mmol), triethylamine (109 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 100:1→50:1) afforded compound (ZDR099) as a beige solid (50 mg, 0.11 mmol, 42%). 1H NMR (300 MHz, CDCl3) δ 4.10 (2H, s), 2.98 (2H, dt, J=28.5 and 4.7 Hz), 4.62 (2H, dt, J=47.5 and 4.7 Hz), 7.39-7.50 (3H, m), 7.59 (2H, d, J=8.2 Hz), 7.84 (1H, dd, J=7.3 and 1.5 Hz), 7.99 (2H, d, J=8.2 Hz), 8.06 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C19H17F4N3O2S: 427.1; found [M+H]+: 428.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 2,2-difluoroethylamine (63 mg, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 100:1→50:1) afforded compound (ZDR100) as a beige solid (49 mg, 0.11 mmol, 42%). 1H NMR (300 MHz, CDCl3) δ 3.03 (2H, td, J=15.1 and 4.2 Hz), 4.11 (2H, s), 5.91 (1H, tt, J=56.3 and 4.2 Hz), 7.41-7.51 (3H, m), 7.61 (2H, d, J=8.2 Hz), 7.86 (1H, dd, J=7.3 and 1.5 Hz), 8.01 (2H, d, J=8.2 Hz), 8.08 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C19H16F5N3O2S: 445.1; found [M+H]+: 446.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 3-picolylamine (80 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL).
Purification by flash chromatography (dichloromethane/methanol, 100:1→50:1) afforded compound (ZDR101) as a pale yellow solid (59 mg, 0.12 mmol, 46%). 1H NMR (300 MHz, CDCl3) δ 3.89 (2H, s), 4.06 (2H, s), 7.25-7.29 (1H, m), 7.38-7.50 (3H, m), 7.58 (2H, d, J=8.2 Hz), 7.70-7.75 (1H, m), 7.80 (1H, dd, J=7.3 and 1.5 Hz), 7.99 (2H, d, J=8.2 Hz), 8.06 (1H, d, J=8.5 Hz), 8.50-8.52 (1H, m), 8.59 (1H, d, J=1.8 Hz); ESI-MS: m/z calcd for C23H19F3N4O2S: 472.1; found [M+H]+: 473.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), tris(hydroxymethyl)aminomethane (94 mg, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 100:1→50:1) afforded compound (ZDR102) as a pale yellow solid (38 mg, 0.07 mmol, 26%). 1H NMR (300 MHz, CDCl3) δ 3.70 (6H, s), 4.18 (2H, s), 7.17-7.30 (3H, m), 7.41 (2H, d, J=8.2 Hz), 7.60 (1H, dd, J=7.2 and 1.8 Hz), 7.82 (1H, d, J=8.4 Hz), 7.93 (2H, d, J=8.2 Hz); ESI-MS: m/z calcd for C21H22F3N3O5S: 485.1; found [M+H]+: 486.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), benzylamine (86 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 100:1→50:1) afforded compound (ZDR103) as a pale yellow solid (60 mg, 0.12 mmol, 46%). 1H NMR (300 MHz, CDCl3) δ 3.88 (2H, s), 4.07 (2H, s), 7.27-7.54 (10H, m), 7.82 (1H, dd, J=7.3 and 1.5 Hz), 7.94 (2H, d, J=8.3 Hz), 8.06 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C24H20F3N3O2S: 471.1; found [M+H]+: 472.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), furfurylamine (69 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) In 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane→dichloromethane/methanol, 100:1) afforded compound (ZDR106) as a pale orange solid (62 mg, 0.13 mmol, 50%). 1H NMR (300 MHz, CDCl3) δ 3.87 (2H, s), 4.08 (2H, s), 6.23-6.25 (1H, m), 6.32-6.35 (1H, m), 7.35-7.49 (4H, m), 7.54 (2H, d, J=8.2 Hz), 7.83 (1H, dd, J=7.3 and 1.4 Hz), 7.94 (2H, d, J=8.2 Hz), 8.05 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C22H18F3N3O3S: 461.1; found [M+H]+: 462.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 2-thiophenemethylamine (80 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane-dichloromethane/methanol, 100:1) afforded compound (ZDR107) as a pale orange solid (70 mg, 0.14 mmol, 53%). 1H NMR (300 MHz, CDCl3) δ 4.09 (2H, s), 4.11 (2H, s), 6.99-7.01 (2H, m), 7.26-7.28 (1H, m), 7.41-7.52 (3H, m), 7.57 (2H, d, J=8.2 Hz), 7.84 (1H, dd, J=7.4 and 1.4 Hz), 7.99 (2H, d, J=8.2 Hz), 8.07 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C22H18F3N3O2S2: 477.1; found [M+H]+:478.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), aniline (72 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane) afforded compound (ZDR108) as a beige solid (23 mg, 0.05 mmol, 19%). 1H NMR (300 MHz, CDCl3) δ 4.62 (2H, s), 6.75-6.78 (3H, m), 7.18-7.21 (2H, m), 7.41 (1H, t, J=7.9 Hz), 7.46-7.50 (2H, m), 7.54 (2H, d, J=8.2 Hz), 7.83 (1H, dd, J=7.3 and 1.6 Hz), 7.91 (2H, d, J=8.2 Hz), 8.05 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C23H18F3N3O2S: 457.1; found [M+H]+: 458.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 2-aminopyridine (73 mg, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (petroleum ether/ethyl acetate, 2:1) afforded compound (ZDR109) as a pale yellow solid (20 mg, 0.04 mmol, 15%). 1H NMR (300 MHz, CDCl3) δ 4.76 (2H, d, J=5.7 Hz), 5.56-5.64 (1H, m), 6.53 (1H, d, J=8.4 Hz), 6.62-6.66 (1H, m), 7.38-7.56 (6H, m), 7.83 (1H, dd, J=7.3 and 1.4 Hz), 7.94 (2H, d, J=8.2 Hz), 8.04 (1H, d, J=8.4 Hz), 8.11-8.13 (1H, m); ESI-MS: m/z calcd for C22H17F3N4O2S: 458.1; found [M+H]+: 459.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 4-(aminomethyl)pyridine (79 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR110) as a pale orange solid (44 mg, 0.09 mmol, 34%). 1H NMR (300 MHz, CDCl3) δ 3.89 (2H, s), 4.06 (2H, s), 7.30-7.34 (2H, m), 7.39-7.50 (3H, m), 7.58 (2H, d, J=8.2 Hz), 7.81 (1H, dd, J=7.4 and 1.5 Hz), 7.99 (2H, d, J=8.2 Hz), 8.07 (1H, d, J=8.4 Hz), 8.56-8.58 (2H, m); ESI-MS: m/z calcd for C23H19F3N4O2S: 472.1; found [M+H]+: 473.0.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 1-(2-aminoethyl)piperidine (112 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) In 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1→20:1→10:1→7:1) afforded compound (ZDR111) as a pale yellow solid (70 mg, 0.14 mmol, 53%). 1H NMR (300 MHz, CDCl3) δ 1.44-1.54 (2H, m), 1.64-1.76 (4H, m), 2.66-2.76 (4H, m), 2.90 (2H, t, J=6.2 Hz), 3.03 (2H, t, J=6.2 Hz), 4.19 (2H, s), 7.34-7.43 (3H, m), 7.55 (2H, d, J=8.2 Hz), 7.74 (1H, dd, J=7.2 and 1.5 Hz), 8.01 (1H, d, J=8.4 Hz), 8.06 (2H, d, J=8.2 Hz); ESI-MS: m/z calcd for C24H27F3N4O2S: 492.2; found [M+Na]+: 515.2.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 4-(2-aminoethyl)morpholine (103 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1→20:1) afforded compound (ZDR112) as a pale yellow solid (80 mg, 0.16 mmol, 61%). 1H NMR (300 MHz, CDCl3) δ 2.43-2.46 (4H, m), 2.58 (2H, t, J=6.2 Hz), 2.83 (2H, t, J=6.2 Hz), 3.68-3.71 (4H, m), 4.14 (2H, s), 7.37-7.49 (3H, m), 7.58 (2H, d, J=8.2 Hz), 7.78 (1H, dd, J=7.3 and 1.5 Hz), 8.01 (2H, d, J=8.2 Hz), 8.05 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C23H25F3N4O3S: 494.2; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 4-(2-aminoethyl)thiomorpholine (109 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1→20:1) afforded compound (ZDR113) as a pale orange solid (70 mg, 0.13 mmol, 50%). 1H NMR (300 MHz, CDCl3) δ 2.59 (2H, t, J=5.9 Hz), 2.63-2.75 (8H, m), 2.80 (2H, t, J=5.9 Hz), 4.12 (2H, s), 7.37-7.48 (3H, m), 7.58 (2H, d, J=8.2 Hz), 7.78 (1H, dd, J=7.3 and 1.4 Hz), 8.02 (2H, d, J=8.2 Hz), 8.06 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C23H25F3N4O2S2: 510.1; found [M+H]+: 511.1.
A similar procedure to that described for the preparation of compound (ZDR090) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 1-(2-aminoethyl)-4-methylpiperazine (118 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by RP-HLPC (10% to 20% A/B gradient over 20 min, where A=water+0.1% trifluoroacetic acid and B=acetonitrile+0.1% trifluoroacetic acid) afforded compound (ZDR114) as a white solid (50 mg, 0.06 mmol, 23%). 1H NMR (300 MHz, CDCl3) δ 2.31 (3H, s), 2.47-2.57 (8H, m), 2.58 (2H, t, J=6.9 Hz), 2.78 (2H, t, J=6.9 Hz), 4.07 (2H, s), 7.38-7.49 (3H, m), 7.61 (2H, d, J=8.2 Hz), 7.80 (1H, dd, J=7.4 and 1.4 Hz), 8.0-8.07 (3H, m); ESI-MS: m/z calcd for C24H28F3N5O2S: 507.2; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR090) was followed using compound (ZDR019) (100 mg, 0.26 mmol), N-(3-aminopropyl)piperidine (125 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by RP-HLPC (10% to 20% A/B gradient over 20 min, where A=water+0.1% trifluoroacetic acid and B=acetonitrile+0.1% trifluoroacetic acid) afforded compound (ZDR115) as a white solid (70 mg, 0.10 mmol, 38%). 1H NMR (300 MHz, CDCl3) δ 1.40-1.50 (2H, m), 1.58-1.69 (4H, m), 1.86-1.95 (2H, m), 2.58-2.73 (6H, m), 2.86 (2H, t, J=6.9 Hz), 4.12 (2H, s), 7.36-7.46 (3H, m), 7.56 (2H, d, J=8.2 Hz), 7.74 (1H, dd, J=7.3 and 1.5 Hz), 8.01 (2H, d, J=8.2 Hz), 8.05 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C25H29F3N4O2S: 506.2; found [M+H]+: 507.2.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 3-(4-morpholinyl)-1-propanamine (112 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR116) as a pale orange solid (92 mg, 0.18 mmol, 69%). 1H NMR (300 MHz, CDCl3) δ 1.88 (2H, t, J=6.9 Hz), 2.42-2.48 (6H, m), 2.93 (2H, t, J=6.9 Hz), 3.60-3.64 (4H, m), 4.21 (2H, s), 7.38-7.43 (3H, m), 7.53 (2H, d, J=8.2 Hz), 7.75 (1H, dd, J=7.2 and 1.6 Hz), 8.02-8.06 (3H, m); ESI-MS: m/z calcd for C24H27F3N4O3S: 508.2; found [M+H]+: 509.2.
A similar procedure to that described for the preparation of compound (ZDR090) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 1-(3-aminopropyl)-4-methylpiperazine (134 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by RP-HLPC (10% to 20% A/B gradient over 20 min, where A=water+0.1% trifluoroacetic acid and B=acetonitrile+0.1% trifluoroacetic acid) afforded compound (ZDR117) as a white solid (44 mg, 0.06 mmol, 23%). 1H NMR (300 MHz, CDCl3) δ 1.79 (2H, t, J=6.9 Hz), 2.22 (3H, s), 2.35-2.55 (8H, m), 2.45 (2H, t, J=6.9 Hz), 2.80 (2H, t, J=6.9 Hz), 4.10 (2H, s), 7.36-7.46 (3H, m), 7.55 (2H, d, J=8.2 Hz), 7.76 (1H, dd, J=7.3 and 1.5 Hz), 8.01 (2H, d, J=8.2 Hz), 8.04 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C25H30F3N5O2S: 521.2; found [M+H]+: 522.2.
A solution of compound (ZDR019) (100 mg, 0.26 mmol), semicarbazide hydrochloride (29 mg, 0.26 mmol) and sodium acetate (43 mg, 0.52 mmol) in aqueous ethanol (5 mL, 90% v/v) was heated at 70° C. for 18 h. The mixture was then diluted with dichloromethane/methanol (25 mL, 9:1 v/v), water (25 mL) added and the pH adjusted to pH 6-7 using aqueous phosphate buffer solution (0.5 M, pH 7). The separated organic layer was dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR118) as a white solid (85 mg, 0.19 mmol, 73%). 1H NMR (300 MHz, CDCl3) δ 7.19-7.22 (1H, m), 7.29 (1H, t, J=7.6 Hz), 7.61-7.66 (3H, m), 7.85 (1H, d, J=8.4 Hz), 8.02-8.07 (4H, m), 11.22 (1H, s); ESI-MS: m/z calcd for C18H14F3N5O3S: 437.1; found [M+Na]+: 460.1.
A similar procedure to that described for the preparation of compound (ZDR118) was followed using compound (ZDR019) (100 mg, 0.26 mmol) and 4-[2-(4-morpholinyl)ethyl]-3-thiosemicarbazide (53 mg, 0.26 mmol) in aqueous ethanol (5 mL, 90% v/v). Purification by flash chromatography (dichloromethane/methanol, 50:1) afforded compound (ZDR119) as a pale yellow solid (95 mg, 0.16 mmol, 61%). 1H NMR (400 MHz, CDCl3) δ 2.58 (4H, brs), 2.72 (2H, t, J=5.8 Hz), 3.76-3.80 (4H, m), 3.84 (2H, q, J=5.8 Hz), 7.47-7.52 (2H, m), 7.65 (2H, d, J=8.5 Hz), 7.86 (1H, dd, J=6.7 and 2.3 Hz), 8.01-8.06 (4H, m), 8.13 (1H, d, J=8.5 Hz), 8.30 (1H, brs), 9.15 (1H, brs), 9.78 (1H, brs); ESI-MS: m/z calcd for C24H25F3N6O3S2: 566.1; found [M+H]+: 567.1.
A similar procedure to that described for the preparation of compound (ZDR118) was followed using compound (ZDR019) (100 mg, 0.26 mmol) and acetylhydrazide (19 mg, 0.26 mmol) in aqueous ethanol (5 mL, 90% v/v). Purification by flash chromatography (dichloromethane/methanol, 50:1) afforded compound (ZDR120) as a white solid (90 mg, 0.20 mmol, 76%), as a 1:1 mixture of E/Z isomers. 1H NMR (300 MHz, CDCl3/d4-MeOH, 1:1 v/v) δ 2.14 (1.5H, s), 2.36 (1.5H, s), 7.41-7.56 (2H, m), 7.60 (2H, d, J=8.2 Hz), 7.77-7.82 (1H, m), 7.95-8.03 (3H, m), 8.10-8.17 (2H, m); ESI-MS: m/z calcd for C19H15F3N4O3S: 436.1; found [M+Na]+: 459.1.
A similar procedure to that described for the preparation of compound (ZDR118) was followed using compound (ZDR019) (100 mg, 0.26 mmol) and nicotinic acid hydrazide (36 mg, 0.26 mmol) in aqueous ethanol (5 mL, 90% v/v). Purification by flash chromatography (dichloromethane/methanol, 50:1) afforded compound (ZDR121) as a white solid (85 mg, 0.17 mmol, 65%). 1H NMR (300 MHz, d6-DMSO) δ 7.56-7.85 (6H, m), 7.98-8.08 (3H, m), 8.24-8.42 (2H, m), 8.50 (1H, s), 8.74-8.85 (1H, m), 8.95-9.14 (1H, m), 10.41 (1H, br s), 12.39 (1H, s); ESI-MS: m/z calcd for C23H16F3N5O3S: 499.1; found [M+Na]+: 522.1.
A similar procedure to that described for the preparation of compound (ZDR118) was followed using compound (ZDR019) (100 mg, 0.26 mmol) and isonicotinic acid hydrazide (36 mg, 0.26 mmol) in aqueous ethanol (5 mL, 90% v/v). Purification by flash chromatography (dichloromethane/methanol, 50:1) afforded compound (ZDR122) as a yellow solid (83 mg, 0.16 mmol, 61%). 1H NMR (300 MHz, d6-DMSO) δ 7.56-7.88 (7H, m), 8.00-8.07 (3H, m), 8.37 (1H, d, J=8.4 Hz), 8.53 (1H, s), 8.75-8.87 (2H, m), 12.44 (1H, s); ESI-MS: m/z calcd for C23H16F3N5O3S: 499.1; found [M+Na]+: 522.1.
A similar procedure to a described for the preparation of compound (ZDR118) was followed using compound (ZDR019) (100 mg, 0.26 mmol) and 1-Boc-nipecotic acid hydrazide (63 mg, 0.26 mmol) in aqueous ethanol (5 mL, 90% v/v). Purification by flash chromatography (dichloromethane/methanol, 50:1) afforded compound (ZDR123) as a white solid (97 mg, 0.16 mmol, 61%). ESI-MS: m/z calcd for C29H30F3N5O5S: 605.2; found [M+Na]+: 628.2.
A solution of compound (ZDR123) (50 mg, 0.08 mmol) in trifluoroacetic acid-dichloromethane (3 mL, 50% v/v) was stirred at room temperature for 3 h. The solvent was removed in vacuo to afford compound (ZDR124) as a white solid (48 mg, 0.08 mmol, quant.), as a 1:1 mixture of E/Z isomers, which was used without further purification. 1H NMR (400 MHz, d4-MeOH) δ 1.85-2.06 (3H, m), 2.12-2.20 (1H, m), 2.98 (0.5H, sept, J=4.1 Hz), 3.14-3.21 (1H, m), 3.26-3.31 (1H, m), 3.37-3.44 (2H, m), 3.82 (0.5H, sept, J=4.1 Hz), 7.50-7.56 (1H, m), 7.62-7.66 (3H, m), 7.86 (1H, dt, J=7.5 and 1.3 Hz), 7.95-7.99 (2H, m), 8.01 (0.5H, d, J=8.6 Hz), 8.04 (0.5H, s), 8.10 (0.5H, d, J=8.6 Hz), 8.21 (1H, dd, J=8.6 and 1.6 Hz), 8.25 (0.5H, s); ESI-MS: m/z calcd for C25H22F3N5O4S: 505.1; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR118) was followed using compound (ZDR019) (100 mg, 0.26 mmol) and hydroxylamine hydrochloride (18 mg, 0.26 mmol) in aqueous ethanol (10 mL, 60% v/v). Purification by flash chromatography (dichloromethane/methanol, 50:1) afforded compound (ZDR125) as a white solid (80 mg, 0.20 mmol, 76%). 1H NMR (300 MHz, CDCl3) δ 6.90 (1H, d, J=8.4 Hz), 7.36-7.61 (5H, m), 7.76 (1H, dd, J=7.3 and 1.4 Hz), 7.92 (2H, d, J=8.2 Hz), 8.05 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C17H12F3N3O3S: 395.1; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR118) was followed using compound (ZDR019) (100 mg, 0.26 mmol), methoxyamine hydrochloride (21 mg, 0.26 mmol) and sodium acetate (43 mg, 0.52 mmol) in ethanol (10 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1) afforded compound (ZDR126) as a white solid (75 mg, 0.18 mmol, 69%). 1H NMR (300 MHz, CDCl3) δ 4.07 (3H, s), 7.43-7.49 (2H, m), 7.62 (2H, d, J=8.4 Hz), 7.84 (1H, dd, J=7.2 and 1.5 Hz), 7.97-8.07 (4H, m), 8.21 (1H, s), 9.12 (1H, br s); ESI-MS: m/z calcd for C18H14F3N3O3S: 409.1; found [M+Na]+: 432.1.
A similar procedure to that described for the preparation of compound (ZDR118) was followed using compound (ZDR019) (100 mg, 0.26 mmol) and aqueous hydrazine (1 mL, 50% w/w in water) in ethanol (10 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1) afforded compound (ZDR127) as a yellow solid (66 mg, 0.16 mmol, 61%). 1H NMR (400 MHz, CDCl3) δ 6.00 (2H, s), 7.40 (1H, t, J=8.0 Hz), 7.46 (1H, dd, J=8.2 and 1.4 Hz), 7.62 (2H, d, J=8.4 Hz), 7.80 (1H, dd, J=7.6 and 1.4 Hz), 7.89 (1H, s), 7.96-8.04 (4H, m); ESI-MS: m/z calcd for C17H13F3N4O2S: 394.1; found [M+H]+: 395.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 2-(2-aminoethoxy)ethanol (79 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1→20:1→15:1) afforded compound (ZDR129) as a pale orange solid (81 mg, 0.17 mmol, 65%). 1H NMR (300 MHz, CDCl3) δ 2.98 (2H, t, J=5.0 Hz), 3.70 (2H, t, J=5.0 Hz), 3.76 (2H, t, J=5.0 Hz), 3.84 (2H, t, J=5.0 Hz), 4.16 (2H, s), 7.29 (1H, d, J=8.4 Hz), 7.34-7.42 (2H, m), 7.56 (2H, d, J=8.3 Hz), 7.79 (1H, dd, J=7.0 and 1.9 Hz), 7.96 (1H, d, J=8.4 Hz), 8.03 (2H, d, J=8.3 Hz); ESI-MS: m/z calcd for C21H22F3N3O4S: 469.1; found [M+H]+: 470.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 2-(2-(2-aminoethoxy)ethoxy)ethanol (109 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1→20:1→15:1) afforded compound (ZDR130) as a pale orange solid (81 mg, 0.15 mmol, 57%). 1H NMR (300 MHz, CDCl3) δ 2.90 (2H, t, J=5.0 Hz), 3.63 (2H, t, J=5.0 Hz), 3.69-3.78 (8H, m), 4.14 (2H, s), 6.44 (1H, br s), 7.33 (1H, d, J=8.4 Hz), 7.37-7.48 (2H, m), 7.54 (2H, d, J=8.3 Hz), 7.85 (1H, dd, J=7.1 and 1.7 Hz), 7.97-8.03 (3H, m); ESI-MS: m/z calcd for C23H26F3N3O5S: 513.2; found [M+H]+: 514.2.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 2-(2-methoxyethoxy)ethanamine (97 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1→430:1→20:1) afforded compound (ZDR131) as a pale yellow solid (80 mg, 0.16 mmol, 61%). 1H NMR (300 MHz, CDCl3) δ 2.95 (2H, t, J=5.1 Hz), 3.35 (3H, s), 3.59 (2H, t, J=5.1 Hz), 3.66-3.76 (4H, m), 4.16 (2H, s), 7.37-7.48 (3H, m), 7.56 (2H, d, J=8.3 Hz), 7.83 (1H, dd, J=7.3 and 1.5 Hz), 8.00 (2H, d, J=8.3 Hz), 8.03 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C22H24F3N3O4S: 483.1; found [M+H]+: 484.2.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 2-(2-(2-methoxyethoxy)ethoxy)ethanamine (128 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) In 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1→30:1→20:1) afforded compound (ZDR132) as a pale orange solid (75 mg, 0.14 mmol, 53%). 1H NMR (300 MHz, CDCl3) δ 2.92 (2H, t, J=5.1 Hz), 3.29 (3H, s), 3.48-3.51 (2H, m), 3.62-3.65 (2H, m), 3.69-3.72 (6H, m), 4.13 (2H, s), 7.37-7.48 (3H, m), 7.55 (2H, d, J=8.2 Hz), 7.82 (1H, dd, J=7.2 and 1.5 Hz), 7.97 (2H, d, J=8.2 Hz), 8.03 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C24H28F3N3O5S: 527.2; found [M+H]+: 528.2.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 2-methoxyethylamine (67 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1→20:1→15:1) afforded compound (ZDR133) as a pale yellow solid (69 mg, 0.15 mmol, 57%). 1H NMR (300 MHz, CDCl3) δ 2.91 (2H, t, J=5.1 Hz), 3.46 (3H, s), 3.61 (2H, t, J=5.1 Hz), 4.14 (2H, s), 7.36 (1H, d, J=8.4 Hz), 7.40-7.50 (2H, m), 7.57 (2H, d, J=8.3 Hz), 7.87 (1H, dd, J=7.3 and 1.5 Hz), 7.98 (2H, d, J=8.3 Hz), 8.05 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C20H20F3N3O3S: 439.1; found [M+H]+: 440.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), tert-butylamine (81 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1→30:1→20:1) afforded compound (ZDR135) as a pale orange solid (75 mg, 0.17 mmol, 65%). 1H NMR (300 MHz, CDCl3) δ 1.24 (9H, s), 4.13 (2H, s), 7.35-7.43 (3H, m), 7.57 (2H, d, J=8.3 Hz), 7.78 (1H, dd, J=7.0 and 1.8 Hz), 7.98 (1H, d, J=8.5 Hz), 8.02 (2H, d, J=8.3 Hz); ESI-MS: m/z calcd for C21H22F3N3O2S: 437.1; found [M+H]+: 438.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), diisopropylamine (109 μL, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1→30:1→20:1) afforded compound (ZDR136) as a white solid (40 mg, 0.08 mmol, 30%). 1H NMR (300 MHz, CDCl3) δ 1.03 (12H, d, J=6.5 Hz), 2.96-3.08 (2H, m), 3.86 (2H, s), 7.36-7.49 (2H, m), 7.58 (2H, d, J=8.3 Hz), 7.76-7.82 (2H, m), 7.98-8.03 (3H, m); ESI-MS: m/z calcd for C23H26F3N3O2S: 465.2; found [M+H]+: 466.2.
A similar procedure to that described for the preparation of compound (ZDR118) was followed using compound (ZDR019) (100 mg, 0.26 mmol), benzyloxyamine hydrochloride (41 mg, 0.26 mmol) and sodium acetate (43 mg, 0.52 mmol) in ethanol (10 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1) afforded compound (ZDR137) as a white solid (75 mg, 0.15 mmol, 57%). 1H NMR (400 MHz, d6-acetone) δ 5.32 (2H, s), 7.34-7.47 (3H, m), 7.49 (2H, d, J=8.4 Hz), 7.57 (1H, t, J=7.9 Hz), 7.67 (1H, dd, J=8.4 and 1.2 Hz), 7.81 (2H, d, J=8.4 Hz), 7.90 (1H, dd, J=7.6 and 1.2 Hz), 7.98 (1H, d, J=7.6 Hz), 8.15 (2H, d, J=8.4 Hz), 8.30 (1H, d, J=8.4 Hz), 8.36 (1H, s), 9.59 (1H, s); ESI-MS: m/z calcd for C24H18F3N3O3S: 485.1; found [M+Na]+: 508.1.
A similar procedure to that described for the preparation of compound (ZDR118) was followed using compound (ZDR019) (100 mg, 0.26 mmol), benzylhydrazine dihydrochloride (50 mg, 0.26 mmol) and sodium acetate (43 mg, 0.52 mmol) In ethanol (10 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1) afforded compound (ZDR138) as a yellow solid (70 mg, 0.14 mmol, 53%). 1H NMR (400 MHz, CDCl3) δ 4.56 (2H, d, J=4.6 Hz), 6.28 (1H, t, J=4.6 Hz), 7.34-7.45 (7H, m), 7.59 (2H, d, J=8.4 Hz), 7.70 (1H, s), 7.77 (1H, dd, J=7.7 and 1.3 Hz), 7.98-8.00 (4H, m); ESI-MS: m/z calcd for C24H19F3N4O2S: 484.1; found [M+H]+: 485.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), compound (ZDR140) (235 mg, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1→30:1→20:1) afforded compound (ZDR139) as a pale yellow solid (120 mg, 0.17 mmol, 65%). 1H NMR (300 MHz, CDCl3) δ 1.45 (9H, s), 1.48 (9H, s), 2.86 (2H, t, J=5.9 Hz), 3.52-3.58 (2H, m), 4.07 (2H, s), 7.35-7.46 (2H, m), 7.55-7.59 (3H, m), 7.79 (1H, dd, J=7.3 and 1.4 Hz), 7.98 (2H, d, J=8.3 Hz), 8.02 (1H, d, J=8.4 Hz), 8.70-8.73 (1H, m), 11.49 (1H, br s).
A solution of N,N′-Bis-Boc-1-guanylpyrazol (1.0 g, 3.22 mmol) in dichloromethane (10 mL) was added dropwise to a solution of 1,2-diaminoethane (2.1 mL, 32.2 mmol) in dichloromethane (10 mL), and the mixture stirred at room temperature for 18 h. The mixture was then washed with water (5×20 mL) and the separated organic layer dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (ethyl acetate) afforded compound (ZDR140) as an off-white solid (800 mg, 2.64 mmol, 81%). 1H NMR (300 MHz, CDCl3) δ 1.48 (18H, s), 2.88 (2H, t, J=5.9 Hz), 3.44-3.50 (2H, m), 8.63 (1H, br s).
A solution of N-Boc-ethylenediamine (1.0 g, 6.24 mmol) and N-nitro-S-methylisothiourea (0.84 g, 6.24 mmol) in ethanol (30 mL) was heated at 60° C. for 18 h. The solvent was then removed in vacuo to afford compound (ZDR141) as a white solid (1.5 g), which was used without further purification. 1H NMR (300 MHz, d6-DMSO) δ 1.37 (9H, s), 3.06-3.10 (2H, m), 3.17-3.21 (2H, m), 6.86-6.88 (1H, m).
A similar procedure to that described for the preparation of compound (ZDR124) was followed using compound (ZDR141) (192 mg, 0.78 mmol) and trifluoroacetic acid-dichloromethane (3 mL, 50% v/v) to afford compound (ZDR142) as a colourless oil (190 mg, 0.78 mmol, quant.), which was used without further purification.
A similar procedure to that described for the preparation of compound (ZDR124) was followed using compound (ZDR139) (100 mg, 0.14 mmol) and trifluoroacetic acid-dichloromethane (3 mL, 50% v/v) to afford compound (ZDR143) as a white solid (92 mg, 0.14 mmol, quant.), which was used without further purification. 1H NMR (300 MHz, d4-MeOH) δ 3.48 (2H, t, J=6.2 Hz), 3.77 (2H, t, J=6.2 Hz), 4.68 (2H, s), 7.48-7.56 (2H, m), 7.61 (1H, dd, J=8.3 and 1.1 Hz), 7.77 (2H, d, J=8.3 Hz), 7.83 (1H, dd, J=7.7 and 1.1 Hz), 8.15 (2H, d, J=8.3 Hz), 8.33 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C20H21F3N6O2S: 466.1; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), compound (ZDR142) (190 mg, ca. 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1→30:1→20:1) afforded compound (ZDR145) as a white solid (80 mg, 0.15 mmol, 57%). 1H NMR (300 MHz, d6-DMSO) δ 2.71 (2H, t, J=5.8 Hz), 3.31 (2H, t, J=5.8 Hz), 3.95 (2H, s), 7.45-7.53 (2H, m), 7.63-7.73 (2H, m), 7.79 (2H, d, J=8.3 Hz), 8.01 (2H, d, J=8.3 Hz), 8.24 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C20H20F3N7O4S: 511.1; found [M+H]+: 512.2.
A solution of N-Boc-ethylenediamine (1.0 g, 6.24 mmol), acetyl chloride (443 μL, 6.24 mmol) and triethylamine (2.6 mL, 18.7 mmol) in dichloromethane (30 mL) was stirred at room temperature for 18 h. The mixture was then washed with water (2×20 mL) and the separated organic layer dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (dichloromethane) afforded compound (ZDR146) as a white solid (900 mg, 4.44 mmol, 71%). 1H NMR (300 MHz, CDCl3) δ 1.29 (9H, s) 1.84 (3H, s), 3.07-3.15 (2H, m), 3.16-3.23 (2H, m), 5.57 (1H, t, J=5.3 Hz), 7.11 (1H, t, J=5.3 Hz).
A similar procedure to that described for the preparation of compound (ZDR124) was followed using compound (ZDR146) (157 mg, 0.78 mmol) and trifluoroacetic acid-dichloromethane (3 mL, 50% v/v) to afford compound (ZDR147) as a colourless oil (150 mg, 0.78 mmol, quant.), which was used without further purification.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), compound (ZDR147) (150 mg, ca. 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1→30:1→20:1) afforded compound (ZDR148) as a pale yellow solid (80 mg, 0.17 mmol, 65%). 1H NMR (300 MHz, CDCl3) δ 1.99 (3H, s), 2.92 (2H, t, J=6.1 Hz), 3.44-3.49 (2H, m), 4.11 (2H, s), 7.38-7.47 (3H, m), 7.54 (2H, d, J=8.3 Hz), 7.77 (1H, dd, J=7.5 and 1.4 Hz), 7.98 (2H, d, J=8.3 Hz), 8.04 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C21H21F3N4O3S: 466.1; found [M+H]+: 467.1.
A similar procedure to that described for the preparation of compound (ZDR118) was followed using compound (ZDR019) (100 mg, 0.26 mmol), methylhydrazine dihydrochloride (21 mg, 0.26 mmol) and sodium acetate (43 mg, 0.52 mmol) in ethanol (10 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1) afforded compound (ZDR153) as a yellow solid (72 mg, 0.17 mmol, 65%). 1H NMR (300 MHz, CDCl3) δ 3.10 (3H, s), 7.32-7.43 (2H, m), 7.61-7.63 (3H, m), 7.76 (1H, dd, J=7.6 and 1.3 Hz), 7.92-8.03 (4H, m); ESI-MS: m/z calcd for C18H15F3N4O2S: 408.1; found [M+H]+: 409.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 4-(aminosulfonyl)benzenesulfonyl chloride (125 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→15:1→10:1) afforded compound (ZDR154) as a pale yellow solid (50 mg, 0.11 mmol, 25%). 1H NMR (300 MHz, CDCl3/d4-MeOH, 1:1) δ 2.34 (6H, s), 3.75 (2H, s), 4.51 (2H, br s), 7.32 (1H, d, J=8.3 Hz), 7.37-7.41 (1H, m), 7.48 (1H, dd, J=7.4 and 1.2 Hz), 7.83-7.86 (3H, m), 7.99 (2H, 8.5 Hz), 8.07 (1H, d, J=8.3 Hz); ESI-MS: m/z calcd for C18H20N4O4S2: 420.1; found [M+H]+: 421.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 3-(aminosulfonyl)benzenesulfonyl chloride (125 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→15:1→10:1) afforded compound (ZDR155) as a pale yellow solid (57 mg, 0.13 mmol, 29%). 1H NMR (300 MHz, CDCl3/d4-MeOH, 1:1) δ 2.38 (6H, s), 3.81 (2H, s), 4.53 (2H, br s), 7.32 (1H, d, J=8.4 Hz), 7.39-7.51 (3H, m), 7.87 (1H, dd, J=7.4 and 1.3 Hz), 7.91-7.94 (1H, m), 7.95-7.99 (1H, m), 8.08 (1H, d, J=8.4 Hz), 8.49-8.50 (1H, m); ESI-MS: m/z calcd for C18H20N4O4S2: 420.1; found [M+H]+: 421.1.
A similar procedure to that described for the preparation of compound (ZDR124) was followed using compound (ZDR333) (60 mg, 0.13 mmol) and trifluoroacetic acid-dichloromethane (3 mL, 50% v/v). The residue was then taken up in dichloromethane (10 mL), diluted with water and the pH adjusted to pH 6-7 using aqueous phosphate buffer solution (0.5 M, pH 7). The separated organic layer was dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (dichloromethane/methanol, 30:1→20:1) afforded compound (ZDR160) as a white solid (40 mg, 0.11 mmol, 84%). 1H NMR (300 MHz, CDCl3) δ 2.29 (6H, s), 3.71 (2H, s), 4.02 (2H, br s), 6.47 (2H, d, J=8.6 Hz), 7.34-7.42 (2H, m), 7.56 (1H, d, J=8.4 Hz), 7.64 (2H, d, J=8.6 Hz), 7.74 (1H, dd, J=6.7 and 2.2 Hz), 8.03 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C18H20N4O2S: 356.1; found [M+H]+: 357.1.
A suspension of compound (ZR313) (60 mg, 0.15 mmol) and palladium-on-carbon (cat., 10% w/w) in methanol (10 mL) was stirred at room temperature under an atmosphere of hydrogen for 18 h. The mixture was then filtered through a pad of Celite® and the solvent removed in vacuo. Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR162) as a pale yellow solid (45 mg, 0.12 mmol, 80%). 1H NMR (300 MHz, CDCl3) δ 2.31 (6H, s), 3.74 (2H, s), 3.78 (2H, br s), 6.64-6.70 (1H, m), 7.07 (1H, t, J=7.8 Hz), 7.18-7.21 (2H, m), 7.36-7.46 (2H, m), 7.56 (1H, d, J=8.4 Hz), 7.77 (1H, dd, J=7.0 and 1.8 Hz), 8.05 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C18H20N4O2S: 356.1; found [M+H]+: 357.1.
A solution of compound (ZDR314) (75 mg, 0.20 mmol) and boron tribromide (400 μL, 0.40 mmol, 1 M in dichloromethane) in dichloromethane (2 mL) was stirred at room temperature for 2 h. The mixture was then diluted with dichloromethane/methanol (25 mL, 9:1 v/v), water (25 mL) added and the pH adjusted to pH 6-7 using aqueous phosphate buffer solution (0.5 M, pH 7). The separated organic layer was dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (dichloromethane/methanol, 30:1→20:1→15:1) afforded compound (ZDR163) as a beige solid (45 mg, 0.12 mmol, 60%). 1H NMR (300 MHz, CDCl3/d4-MeOH, 3:1 v/v) δ 2.31 (6H, s), 3.74 (2H, s), 6.80-6.83 (1H, m), 7.08 (1H, t, J=7.9 Hz), 7.27-7.40 (5H, m), 7.76 (1H, dd, J=7.4 and 1.4 Hz), 8.01 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C18H19N3O3S: 357.1; found [M+H]+: 358.1.
A similar procedure to that described for the preparation of compound (ZDR163) was followed using compound (ZDR063) (75 mg, 0.20 mmol) and boron tribromide (400 μL, 0.40 mmol, 1 M in dichloromethane) in dichloromethane (2 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→15:1) afforded compound (ZDR164) as a white solid (53 mg, 0.14 mmol, 70%). 1H NMR (400 MHz, CDCl3) δ 2.35 (6H, s), 3.76 (2H, s), 6.49 (2H, d, J=8.8 Hz), 7.41-7.42 (2H, m), 7.45 (1H, d, J=8.4 Hz), 7.54 (2H, d, J=8.8 Hz), 7.85 (1H, dd, J=7.4 and 1.4 Hz), 8.01 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C18H19N3O3S: 357.1; found [M+H]+: 358.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 2-amino-4,6-dichlorophenol (138 mg, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 100:1) afforded compound (ZDR167) as an orange solid (55 mg, 0.10 mmol, 38%). 1H NMR (300 MHz, CDCl3) δ 4.63 (2H, s), 5.57 (1H, br s), 6.54 (1H, d, J=2.3 Hz), 6.71 (1H, d, J=2.3 Hz), 7.37-7.49 (3H, m), 7.56 (2H, d, J=8.3 Hz), 7.80 (1H, dd, J=7.3 and 1.4 Hz), 7.94 (2H, d, J=8.3 Hz), 8.07 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C23H16Cl2F3N3O3S: 541.0; found [M+H]+: 541.9.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 2-amino-4-nitrophenol (120 mg, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 100:1) afforded compound (ZDR170) as an orange solid (25 mg, 0.04 mmol, 15%). 1H NMR (300 MHz, CDCl3) δ 4.77 (2H, s), 6.89-6.93 (1H, m), 7.38-7.43 (2H, m), 7.49 (1H, dd, J=8.2 and 1.3 Hz), 7.56 (2H, d, J=8.3 Hz), 7.59-7.63 (2H, m), 7.73 (1H, dd, J=7.5 and 1.3 Hz), 7.90 (2H, d, J=8.3 Hz), 8.09 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C23H17F3N4O5S: 518.1; found [M+Na]+:541.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), 2-aminophenol (85 mg, 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 100:1) afforded compound (ZDR171) as an orange solid (38 mg, 0.08 mmol, 30%). 1H NMR (300 MHz, CDCl3) δ 4.73 (2H, s), 6.61-6.66 (1H, m), 6.74-6.85 (3H, m), 7.37 (2H, d, J=8.3 Hz), 7.44 (1H, dd, J=8.3 and 1.1 Hz), 7.48 (2H, d, J=8.3 Hz), 7.75 (1H, dd, J=7.4 and 1.1 Hz), 7.84 (2H, d, J=8.3 Hz), 8.02 (1H, d, J=8.3 Hz); ESI-MS: m/z calcd for C23H18F3N3O3S: 473.1; found [M+H]+: 474.1.
A similar procedure to that described for the preparation of compound (ZDR146) was followed using N-Boc-ethylenediamine (1.0 g, 6.24 mmol), methanesulfonyl chloride (482 μL, 6.24 mmol) and triethylamine (2.6 mL, 18.7 mmol) in dichloromethane (30 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR173) as a white solid (1.20 g, 5.03 mmol, 80%). 1H NMR (300 MHz, CDCl3/d4-MeOH, 1:1 v/v) δ 1.41 (9H, s), 2.93 (3H, s), 3.11-3.23 (4H, m).
A similar procedure to that described for the preparation of compound (ZDR146) was followed using N-Boc-ethylenediamine (1.0 g, 6.24 mmol), benzenesulfonyl chloride (796 μL, 6.24 mmol) and triethylamine (2.6 mL, 18.7 mmol) in dichloromethane (30 mL). Purification by flash chromatography (dichloromethane/methanol, 40:1) afforded compound (ZDR174) as a white solid (1.70 g, 5.65 mmol, 90%). 1H NMR (300 MHz, CDCl3/d4-MeOH, 1:1 v/v) δ 1.38 (9H, s), 2.96 (2H, t, J=6.1 Hz), 3.11-3.18 (2H, m), 7.45-7.57 (3H, m), 7.80-7.85 (2H, m).
A similar procedure to that described for the preparation of compound (ZDR124) was followed using compound (ZDR174) (234 mg, 0.78 mmol) and trifluoroacetic acid-dichloromethane (3 mL, 50% v/v) to afford compound (ZDR178) as a colourless oil (230 mg, 0.78 mmol, quant.), which was used without further purification.
A similar procedure to that described for the preparation of compound (ZDR124) was followed using compound (ZDR173) (157 mg, 0.78 mmol) and trifluoroacetic acid-dichloromethane (3 mL, 50% v/v) to afford compound (ZDR179) as a colourless oil (185 mg, 0.78 mmol, quant.), which was used without further purification.
A suspension of compound (ZDR019) (100 mg, 0.26 mmol) and sodium borohydride (14 mg, 0.39 mmol) in ethanol (5 mL) was stirred at room temperature for 18 h. The mixture was then diluted with dichloromethane (25 mL), water (25 mL) added and the pH adjusted to pH 6-7 using aqueous phosphate buffer solution (0.5 M, pH 7). The separated organic layer was dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (dichloromethane/methanol, 50:1) afforded compound (ZDR176) as a white solid (80 mg, 0.20 mmol, 76%). 1H NMR (300 MHz, CDCl3) δ 4.96 (2H, s), 7.37 (1H, d, J=8.4 Hz), 7.43-7.54 (2H, m), 7.58 (2H, d, J=8.3 Hz), 7.89 (1H, dd, J=7.4 and 1.4 Hz), 8.02 (2H, d, J=8.3 Hz), 8.09 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C17H13F3N2O3S: 382.1; found [M+Na]+: 405.0.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), compound (ZDR179) (180 mg, ca. 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) In 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR180) as a pale yellow solid (63 mg, 0.12 mmol, 46%). 1H NMR (300 MHz, CDCl3) δ 2.97-3.00 (2H, m), 2.99 (3H, s), 3.34-3.37 (2H, m), 3.98 (2H, s), 7.35 (1H, d, J=8.4 Hz), 7.38 (1H, d, J=7.4 Hz), 7.41 (1H, dd, J=8.3 and 1.4 Hz), 7.48 (2H, d, J=8.3 Hz), 7.74 (1H, dd, J=7.4 and 1.4 Hz), 7.97-8.01 (3H, m); ESI-MS: m/z calcd for C20H21F3N4O4S2: 502.1; found [M+H]+: 503.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), compound (ZDR178) (230 mg, ca. 0.78 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in 1,2-dichloroethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR181) as a pale yellow solid (59 mg, 0.10 mmol, 38%). 1H NMR (300 MHz, CDCl3) δ 2.81-2.85 (2H, m), 3.10-3.14 (2H, m), 3.97 (2H, s), 7.36-7.54 (6H, m), 7.57 (2H, d, J=8.3 Hz), 7.77 (1H, dd, J=7.1 and 1.6 Hz), 7.85-7.88 (2H, m), 8.01-8.04 (3H, m); ESI-MS: m/z calcd for C25H23F3N4O4S2: 564.1; found [M+H]+: 565.1.
A similar procedure to that described for the preparation of compound (ZDR162) was followed using compound (ZDR126) (100 mg, 0.25 mmol) and palladium-on-carbon (cat., 10% w/w) in methanol (20 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR184) as a yellow solid (64 mg, 0.16 mmol, 64%). 1H NMR (400 MHz, d6-DMSO): δ 4.40 (2H, s), 6.84 (2H, br s), 7.38 (1H, d, J=7.8 Hz), 7.45 (1H, d, J=7.8 Hz), 7.54 (1H, d, J=8.5 Hz), 7.59 (1H, d, J=7.4 Hz), 7.70 (2H, d, J=8.2 Hz), 8.00 (2H, d, J=8.2 Hz), 8.25 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C17H14F3N3O2S: 381.1; found [M+H]+: 382.0.
A solution of compound (ZDR184) (50 mg, 0.13 mmol) and acetyl chloride (10 μL, 0.14 mmol) in dichloromethane (3 mL) was stirred at room temperature for 18 h. The mixture was then diluted with dichloromethane (25 mL), water (25 mL) added and the pH adjusted to pH 6-7 using aqueous phosphate buffer solution (0.5 M, pH 7). The separated organic layer was dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR185) as a colourless solid (30 mg, 0.07 mmol, 53%). 1H NMR (400 MHz, CDCl3): δ 2.14 (3H, s), 4.70 (2H, d, J=5.6 Hz), 6.78 (1H, br s), 7.38-7.43 (2H, m), 7.47 (1H, dd, J=8.3 and 1.3 Hz), 7.60 (2H, d, J=8.4 Hz), 7.89 (1H, dd, J=7.5 and 1.3 Hz), 8.01 (2H, d, J=8.4 Hz), 8.05 (1H, d, J=8.5 Hz), 9.29 (1H, br s); ESI-MS: m/z calcd for C19H16F3N3O3S: 423.1; found [M+Na]+: 446.1.
A solution of compound (ZDR184) (55 mg, 0.14 mmol) and N,N′-di-Boc-H-pyrazole-1-carboxamidine (54 mg, 0.17 mmol) in tetrahydrofuran (2 mL) was stirred at room temperature for 18 h. The mixture was then diluted with ethyl acetate (10 mL), water (25 mL) added and the pH adjusted to pH 6-7 using aqueous phosphate buffer solution (0.5 M, pH 7). The separated organic layer was dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (petroleum ether/ethyl acetate, 4:1) afforded compound (ZDR186) as a colourless solid (80 mg, 0.12 mmol, 85%). 1H NMR (400 MHz, CDCl3): δ 1.54 (9H, s), 1.63 (9H, s), 4.88 (2H, d, J=3.9 Hz), 7.28 (1H, d, J=8.4 Hz), 7.44-7.56 (4H, m), 7.96-8.01 (3H, m), 8.07 (1H, d, J=8.4 Hz), 9.13 (1H, br s), 10.12 (1H, br s), 11.58 (1H, br s).
A similar procedure to that described for the preparation of compound (ZDR124) was followed using compound (ZDR186) (80 mg, 0.13 mmol) and trifluoroacetic acid-dichloromethane (3 mL, 50% v/v) to afford compound (ZDR187) as a white solid (67 mg, 0.13 mmol, quant.), which was used without further purification. 1H NMR (400 MHz, d4-MeOH): δ 4.66 (2H, s), 7.43 (1H, d, J=8.5 Hz), 7.51 (1H, t, J=8.0 Hz), 7.63-7.67 (3H, m), 7.88 (1H, dd, J=7.6 and 1.0 Hz), 7.98 (2H, d, J=8.4 Hz), 8.25 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C18H16F3N5O2S: 423.1; found [M+H]+: 424.0.
A solution of compound (ZDR184) (50 mg, 0.13 mmol) and N-nitro-S-methylisothiourea (21 mg, 0.16 mmol) In ethanol (2 mL) was stirred at 40° C. for 3 days, and the solvent then removed in vacuo. Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR188) as a pale yellow solid (43 mg, 0.09 mmol, 69%). 1H NMR (400 MHz, d6-DMSO): δ 4.65 (2H, d, J=4.4 Hz), 7.48 (1H, d, J=8.5 Hz), 7.57 (1H, t, J=7.9 Hz), 7.74 (1H, d, J=8.4 Hz), 7.77 (2H, d, J=8.4 Hz), 7.82 (1H, d, J=7.6 Hz), 8.01 (2H, d, J=8.4 Hz), 8.34 (1H, d, J=8.5 Hz), 9.16 (1H, br s); ESI-MS: m/z calcd for C18H18F3N6O4S: 468.1; found [M+Na]+: 491.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 2-chlorobenzenesulfonyl chloride (66 μL, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→15:1) afforded compound (ZDR190) as a tan solid (80 mg, 0.21 mmol, 47%). 1H NMR (400 MHz, CDCl3) δ 2.32 (6H, s), 3.75 (2H, s), 7.29-7.41 (5H, m), 7.63 (1H, d, J=8.5 Hz), 7.71 (1H, d, J=7.4 Hz), 8.05 (1H, d, J=8.5 Hz), 8.18 (1H, d, J=7.8 Hz); ESI-MS: m/z calcd for C18H18ClN3O2S: 375.1; found [M+H]+: 376.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 2-(trifluoromethoxy)benzenesulfonyl chloride (117 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→15:1) afforded compound (ZDR191) as a pale yellow solid (71 mg, 0.17 mmol, 38%). 1H NMR (400 MHz, CDCl3) δ 2.32 (6H, s), 3.74 (2H, s), 7.21 (1H, d, J=8.0 Hz), 7.26-7.35 (2H, m), 7.41 (1H, d, J=8.0 Hz), 7.48 (1H, t, J=7.5 Hz), 7.66 (1H, d, J=8.4 Hz), 7.73 (1H, d, J=7.5 Hz), 8.06 (1H, d, J=8.4 Hz), 8.13 (1H, d, J=7.7 Hz); ESI-MS: m/z calcd for C19H18F3N3O3S: 425.1; found [M+H]+: 426.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), morpholine-4-sulfonyl chloride (90 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1→10:1) afforded compound (ZDR192) as a pale yellow solid (33 mg, 0.09 mmol, 20%). 1H NMR (400 MHz, CDCl3) δ 2.32 (6H, s), 3.24 (4H, t, J=4.7 Hz), 3.58 (4H, t, J=4.7 Hz), 3.75 (2H, s), 7.45 (1H, t, J=7.8 Hz), 7.50 (1H, dt, J=8.2 and 1.5 Hz), 7.67 (1H, d, J=8.5 Hz), 7.83 (1H, dd, J=7.3 and 1.5 Hz), 8.14 (1H, d, J=8.5 Hz), 8.98 (1H, brs); ESI-MS: m/z calcd for C16H22N4O3S: 350.1; found [M+H]+: 351.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), piperidine-1-sulfonyl chloride (68 μL, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1→10:1) afforded compound (ZDR193) as a yellow oil (35 mg, 0.10 mmol, 22%). 1H NMR (400 MHz, CDCl3) δ 1.37-1.42 (2H, m), 1.46-1.51 (4H, m), 2.32 (6H, s), 3.25 (4H, t, J=5.5 Hz), 3.74 (2H, s), 7.42-7.48 (2H, m), 7.65 (1H, d, J=8.5 Hz), 7.73 (1H, dd, J=6.8 and 2.0 Hz), 8.12 (1H, d, J=8.5 Hz), 8.95 (1H, brs); ESI-MS: m/z calcd for C17H24N4O2S: 348.2; found [M+H]+: 349.2.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 1-methyl-H-pyrazole-4-sulfonyl chloride (88 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→8:1) afforded compound (ZDR194) as a pale yellow solid (14 mg, 0.04 mmol, 9%). 1H NMR (400 MHz, CDCl3) δ 2.31 (6H, s), 3.72 (2H, s), 3.77 (3H, s), 7.42-7.49 (2H, m), 7.61 (1H, d, J=8.5 Hz), 7.70 (1H, s), 7.75 (1H, s), 7.82 (1H, dd, J=7.5 and 1.5 Hz), 8.09 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C16H19N5O2S: 345.1; found [M+Na]+: 368.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 1-methyl-H-imidazole-4-sulfonyl chloride (88 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→7:1) afforded compound (ZDR195) as a yellow solid (44 mg, 0.12 mmol, 27%). 1H NMR (400 MHz, CDCl3) δ 2.33 (6H, s), 3.64 (3H, s), 3.76 (2H, s), 7.32-7.42 (3H, m), 7.54-7.60 (2H, m), 7.78-7.84 (1H, m), 8.05 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C16H19N5O2S: 345.1; found [M+H]+: 346.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 2,1,3-benzothiadiazole-4-sulfonyl chloride (114 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→15:1) afforded compound (ZDR196) as a pale yellow solid (145 mg, 0.36 mmol, 81%). 1H NMR (400 MHz, CDCl3) δ 2.31 (6H, s), 3.70 (2H, s), 7.31-7.37 (2H, m), 7.54 (1H, d, J=8.5 Hz), 7.61 (1H, dd, J=8.9 and 6.9 Hz), 7.84 (1H, dd, J=7.0 and 1.9 Hz), 7.97 (1H, d, J=8.5 Hz), 8.08 (1H, dd, J=8.9 and 0.9 Hz), 8.33 (1H, dd, J=6.9 and 0.9 Hz); ESI-MS: m/z calcd for C18H17N5O2S2: 399.1; found [M+H]+: 400.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 2-fluorobenzenesulfonyl chloride (64 μL, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→15:1) afforded compound (ZDR201) as a pale yellow solid (72 mg, 0.20 mmol, 45%). 1H NMR (400 MHz, CDCl3) δ 2.32 (6H, s), 3.76 (2H, s), 6.97-7.02 (1H, m), 7.13-7.17 (1H, m), 7.35 (1H, t, J=7.7 Hz), 7.39-7.45 (2H, m), 7.61 (1H, d, J=8.5 Hz), 7.75 (1H, dd, J=7.5 and 1.2 Hz), 7.93-7.98 (1H, m), 8.05 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C18H18FN3O2S: 359.1; found [M+H]+: 360.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 2-bromobenzenesulfonyl chloride (125 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→15:1) afforded compound (ZDR202) as a pale yellow solid (57 mg, 0.14 mmol, 31%). 1H NMR (400 MHz, CDCl3) δ 2.32 (6H, s), 3.76 (2H, s), 7.25-7.41 (4H, m), 7.55 (1H, d, J=7.8 Hz), 7.63 (1H, d, J=8.5 Hz), 7.71 (1H, d, J=7.4 Hz), 8.05 (1H, d, J=8.5 Hz), 8.24 (1H, d, J=7.5 Hz); ESI-MS: m/z calcd for C18H18BrN3O2S: 419.0; found [M+H]+: 420.0.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 2,4-dimethyl-1,3-thiazole-5-sulfonyl chloride (103 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→15:1) afforded compound (ZDR203) as a pale yellow solid (40 mg, 0.11 mmol, 25%). 1H NMR (400 MHz, CDCl3) δ 2.31 (6H, s), 2.51 (3H, s), 2.55 (3H, s), 3.72 (2H, s), 7.44 (1H, t, J=7.7 Hz), 7.52 (1H, d, J=8.0 Hz), 7.64 (1H, d, J=8.5 Hz), 7.85 (1H, d, J=7.4 Hz), 8.10 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C17H20N4O2S2: 376.1; found [M+H]+: 377.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), pyrrolidine-1-sulfonyl chloride (83 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 10:1→5:1) afforded compound (ZDR204) as a pale brown solid (17 mg, 0.05 mmol, 11%). 1H NMR (400 MHz, CDCl3) δ 1.72-1.75 (4H, m), 2.32 (6H, s), 3.34-3.37 (4H, m), 3.75 (2H, s), 7.43-7.48 (2H, m), 7.65 (1H, d, J=8.5 Hz), 7.76 (1H, dd, J=7.0 and 2.0 Hz), 8.12 (1H, d, J=8.5 Hz), 8.99 (1H, brs); ESI-MS: m/z calcd for C16H22N4O2S: 334.1; found [M+H]+: 335.2.
A solution of compound (ZDR184) (50 mg, 0.13 mmol), N,N-dimethylglycine hydrochloride (21 mg, 0.15 mmol), N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (28 mg, 0.15 mmol) and triethylamine (55 μL, 0.39 mmol) in dimethylformamide (3 mL) was stirred at room temperature for 18 h. The mixture was then diluted with dichloromethane (25 mL), water (25 mL) added and the pH adjusted to pH 6-7 using aqueous phosphate buffer solution (0.5 M, pH 7). The separated organic layer was dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (dichloromethane/methanol, 50:1→30:1→15:1) afforded compound (ZDR205) as a pale yellow solid (30 mg, 0.06 mmol, 46%). 1H NMR (300 MHz, CDCl3) δ 2.46 (6H, s), 3.13 (2H, s), 4.77 (2H, d, J=5.4 Hz), 7.39 (1H, d, J=8.4 Hz), 7.45 (1H, d, J=7.3 Hz), 7.50 (1H, dd, J=8.4 and 1.3 Hz), 7.63 (2H, d, J=8.3 Hz), 7.84 (1H, dd, J=7.3 and 1.3 Hz), 8.03 (2H, d, J=8.3 Hz), 8.09 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C21H21F3N4O3S: 466.1; found [M+H]+: 467.1.
A similar procedure to that described for the preparation of compound (ZDR185) was followed using compound (ZDR184) (50 mg, 0.13 mmol), methanesulfonyl chloride (11 μL, 0.15 mmol) and triethylamine (55 μL, 0.39 mmol) in dichloromethane (3 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR209) as a colourless solid (35 mg, 0.07 mmol, 53%). 1H NMR (400 MHz, CDCl3) δ 3.08 (3H, s), 4.65 (2H, d, J=5.8 Hz), 6.24-6.26 (1H, m), 7.38 (1H, d, J=8.5 Hz), 7.43 (1H, d, J=7.6 Hz), 7.48 (1H, dd, J=8.0 and 1.5 Hz), 7.61 (2H, d, J=8.5 Hz), 7.84 (1H, dd, J=7.5 and 1.5 Hz), 8.08 (3H, dd, J=8.5 and 2.1 Hz), 9.51 (1H, br s); ESI-MS: m/z calcd for C18H16F3N3O4S2: 459.1; found [M+Na]+: 482.0.
A similar procedure to that described for the preparation or compound (ZDR185) was followed using compound (ZDR184) (50 mg, 0.13 mmol), benzenesulfonyl chloride (26 mg, 0.15 mmol) and triethylamine (55 μL, 0.39 mmol) in dichloromethane (3 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR210) as a pale yellow solid (51 mg, 0.09 mmol, 69%). 1H NMR (400 MHz, CDCl3) δ 4.47 (2H, d, J=5.7 Hz), 6.24 (1H, brt, J=5.7 Hz), 7.32 (1H, d, J=8.4 Hz), 7.39-7.49 (5H, m), 7.57 (2H, d, J=8.4 Hz), 7.82 (1H, dd, J=7.1 and 1.7 Hz), 7.90-7.93 (2H, m), 8.00 (1H, d, J=8.4 Hz), 8.03 (2H, d, J=8.4 Hz), 9.28 (1H, brs); ESI-MS: m/z calcd for C23H18F3N3O4S2: 521.1; found [M+Na]+: 544.1.
A solution of compound (ZDR184) (50 mg, 0.13 mmol), 4-(dimethylamino)butyric acid hydrochloride (25 mg, 0.15 mmol), N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (28 mg, 0.15 mmol) and triethylamine (55 μL, 0.39 mmol) in dimethylformamide (3 mL) was stirred at room temperature for 18 h (no work-up). Purification by RP-HLPC (30% to 90% A/B gradient over 60 min, where A=water+0.1% trifluoroacetic acid and B=acetonitrile+0.1% trifluoroacetic acid) afforded compound (ZDR211) as a white solid (30 mg, 0.05 mmol, 38%). 1H NMR (400 MHz, d6-acetone) δ 2.18 (2H, quin, J=6.9 Hz), 2.69 (2H, t, J=6.9 Hz), 3.01 (6H, s), 3.36 (2H, t, J=6.9 Hz), 4.71 (2H, d, J=5.5 Hz), 7.50-7.54 (2H, m), 7.65 (1H, dd, J=8.4 and 1.4 Hz), 7.79 (2H, d, J=8.3 Hz), 8.36 (1H, dd, J=7.6 and 1.2 Hz), 8.12 (2H, d, J=8.3 Hz), 8.26 (1H, d, J=8.4 Hz), 8.42 (1H, brs), 9.66 (1H, brs); ESI-MS: m/z calcd for C23H25F3N4O3S: 494.2; found [M+H]+:495.2.
A solution of compound (ZDR271) (79 mg, 0.20 mmol), 3-(dimethylamino)-1-propylamine (27 μL, 0.22 mmol), N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (42 mg, 0.22 mmol) and triethylamine (84 μL, 0.6 mmol) in dichloromethane (5 mL) was stirred at room temperature for 18 h. Trifluoroacetic acid (5 mL) was added and the solution was stirred at room temperature for a further 3 h, and the solvent removed in vacuo. Purification by RP-HLPC (30% to 90% A/B gradient over 60 min, where A=water+0.1% trifluoroacetic acid and B=acetonitrile+0.1% trifluoroacetic acid) afforded compound (ZDR224) as a white solid (21 mg, 0.03 mmol, 15%). 1H NMR (400 MHz, d6-acetone) δ 2.20 (2H, quin, J=6.9 Hz), 3.02 (6H, s), 3.40 (2H, t, J=6.9 Hz), 3.61 (2H, t, J=6.9 Hz), 7.64 (1H, t, J=8.0 Hz), 7.75-7.79 (3H, m), 7.96 (1H, dd, J=7.7 and 1.2 Hz), 8.09 (2H, d, J=8.1 Hz), 8.22 (1H, d, J=8.5 Hz), 8.47 (1H, d, J=8.5 Hz), 9.60 (1H, brs), 10.12 (1H, brs); ESI-MS: m/z calcd for C22H23F3N4O3S: 480.1; found [M+H]+: N/A.
A solution of compound (ZDR043) (500 mg, 0.93 mmol), di-tert-butyl dicarbonate (212 mg, 1.11 mmol) and triethylamine (391 μL, 2.79 mmol) in dimethylformamide (12 mL) was stirred at room temperature for 18 h. The mixture was then diluted with dichloromethane (50 mL), washed with aqueous sodium hydrogen sulfate (50 mL, 1 M) and the separated organic layer dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (dichloromethane/methanol, 10:1) afforded compound (ZDR227) as a yellow oil (400 mg, 0.74 mmol, 79%). 1H NMR (400 MHz, CDCl3) δ 1.52 (9H, s), 3.95-4.07 (2H, m), 4.71-4.78 (2H, m), 7.39-7.49 (3H, m), 7.61-7.64 (2H, m), 7.82-7.87 (1H, m), 8.01-8.10 (3H, m), 9.23 (1H, brs).
A solution of compound (ZDR246) (100 mg, 0.15 mmol) and N,N-dimethylethylenediamine (49 μL, 0.45 mmol) in dichloromethane (5 mL) was stirred at room temperature for 18 h. The mixture was then diluted with dichloromethane (50 mL), water (25 mL) added and the pH adjusted to pH 6-7 using aqueous phosphate buffer solution (0.5 M, pH 7). The separated organic layer was dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (dichloromethane/methanol, 20:1→10:1→5:1) afforded compound (ZDR234) as a pale yellow solid (28 mg, 0.04 mmol, 26%). 1H NMR (400 MHz, d6-acetone) δ 1.32 (4.5H, s), 1.50 (4.5H, s), 2.19 (6H, s), 2.37 (2H, brs), 3.30 (2H, brs), 3.96-4.06 (2H, m), 4.77-4.80 (2H, m), 7.15-7.24 (1H, m), 7.51 (1H, t, J=7.6 Hz), 7.55-7.59 (1H, m), 7.64 (1H, d, J=8.0 Hz), 7.83-7.91 (3H, m), 8.18-8.21 (2H, m), 8.28 (1H, brs).
A solution of compound (ZDR227) (750 mg, 1.39 mmol), N-hydroxysuccinimide (191 mg, 1.66 mmol) and N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (318 mg, 1.66 mmol) in dichloromethane-dimethylformamide (20 mL, 10:1 v/v) was stirred at room temperature for 18 h. The mixture was then diluted with dichloromethane (50 mL), water (25 mL) added and the pH adjusted to pH 6-7 using aqueous phosphate buffer solution (0.5 M, pH 7). The separated organic layer was dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR246) as a yellow oil (630 mg, 1.0 mmol, 71%). 1H NMR (400 MHz, CDCl3) δ 1.30 (4.5H, s) 1.51 (4.5H, s), 3.46 (4H, s), 4.30-4.43 (2H, m), 4.69-4.78 (2H, m), 7.39-7.48 (4H, m), 7.61 (2H, d, J=7.9 Hz), 7.84-7.86 (1H, m), 8.02-8.08 (2H, m), 9.29 (1H, brs).
A similar procedure to that described for the preparation of compound (ZDR234) was followed using compound (ZDR246) (100 mg, 0.15 mmol) and 1-(2-aminoethyl)piperidine (64 μL, 0.45 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→10:1→45:1) afforded compound (ZDR247) as a colourless solid (49 mg, 0.07 mmol, 46%). 1H NMR (400 MHz, CDCl3) δ 1.37 (4.5H, s), 1.52 (4.5H, s), 1.45 (2H, brs), 1.60 (4H, brs), 2.44 (4H, brs), 2.48 (2H, brs), 3.39 (2H, brq, J=5.4 Hz), 3.89-3.98 (2H, m), 4.71-4.77 (2H, m), 6.91-7.09 (1H, m), 7.39-7.52 (3H, m), 7.65 (2H, d, J=8.4 Hz), 7.83 (1H, brs), 8.04-8.09 (3H, m).
A solution of compound (ZDR019) (500 mg, 1.31 mmol) and potassium permanganate (350 mg, 2.22 mmol) in acetone (10 mL) was stirred at room temperature for 4 h. The mixture was then diluted with dichloromethane (30 mL) and washed with aqueous sodium hydrogen sulfate (30 mL, 1 M). The separated organic layer was dried over anhydrous magnesium sulfate, filtered and the filtrate concentrated in vacuo. Purification by flash chromatography (dichloromethane/methanol, 100:1→420:1) afforded compound (ZDR251) as an off-white solid (280 mg, 0.70 mmol, 53%). 1H NMR (300 MHz, d6-DMSO) δ 7.61 (1H, t, J=7.9 Hz), 7.68 (1H, dd, J=7.9 and 1.5 Hz), 7.74 (2H, d, J=8.5 Hz), 7.92 (1H, dd, J=7.9 and 1.5 Hz), 8.09 (2H, d, J=8.5 Hz), 8.19 (1H, d, J=8.5 Hz), 8.44 (1H, d, J=8.5 Hz).
A similar procedure to that described for the preparation of compound (ZDR234) was followed using compound (ZDR246) (100 mg, 0.15 mmol) and methylamine (0.5 mL, 1.0 mmol, 2 M in tetrahydrofuran) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→10:1) afforded compound (ZDR253) as a colourless solid (58 mg, 0.10 mmol, 66%). 1H NMR (400 MHz, CDCl3) δ 1.37 (4.5H, s), 1.52 (4.5H, s), 2.81-2.82 (3H, m), 3.91-3.95 (2H, m), 4.72-4.78 (2H, m), 6.24-6.37 (1H, m), 7.39-7.50 (3H, m), 7.66 (2H, d, J=8.5 Hz), 7.83 (1H, brs), 8.02-8.06 (2H, m), 8.10 (1H, d, J=8.5 Hz), 9.16 (1H, brs).
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 4-chlorosulfonyl-piperidine-1-carboxylic acid tert-butyl ester (139 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) In dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→10:1) afforded compound (ZDR256) as a yellow oil (60 mg, 0.13 mmol, 29%). 1H NMR (400 MHz, CDCl3) δ 1.40 (9H, s), 1.81 (2H, qd, J=12.5 and 4.5 Hz), 2.07-2.11 (2H, m), 2.31 (6H, s), 2.56 (2H, brs), 3.14 (1H, tt, J=11.9 and 3.7 Hz), 3.74 (2H, s), 4.14 (2H, brs), 7.47 (1H, d, J=7.6 Hz), 7.53 (1H, dd, J=8.2 and 1.2 Hz), 7.66 (1H, d, J=8.5 Hz), 8.36 (1H, dd, J=7.6 and 1.2 Hz), 8.15 (1H, d, J=8.5 Hz), 8.93 (1H, brs).
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 4-(thiomethyl)benzenesulfonyl chloride (109 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 100:1→20:1) afforded compound (ZDR257) as a yellow solid (142 mg, 0.36 mmol, 81%). 1H NMR (400 MHz, CDCl3) δ 2.29 (6H, s), 2.40 (3H, s), 3.70 (2H, s), 7.09-7.12 (2H, m), 7.38-7.46 (2H, m), 7.58 (1H, d, J=8.5 Hz), 7.75-7.80 (3H, m), 8.06 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C19H21N3O2S2: 387.1; found [M+H]+: 388.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), 6-methoxypyridine-3-sulfonyl chloride (101 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 100:1→20:1) afforded compound (ZDR258) as a yellow solid (28 mg, 0.08 mmol, 18%). 1H NMR (400 MHz, CDCl3) δ 2.29 (6H, s), 3.70 (2H, s), 3.87 (3H, s), 6.60 (1H, d, J=8.8 Hz), 7.40-7.49 (2H, m), 7.59 (1H, d, J=8.5 Hz), 7.82 (1H, dd, J=7.5 and 1.6 Hz), 7.93-7.96 (1H, m), 8.07 (1H, d, J=8.5 Hz), 8.67 (1H, d, J=2.5 Hz); ESI-MS: m/z calcd for C18H20N4O3S: 372.1; found [M+H]+: 373.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (90 mg, 0.44 mmol), propene-1-sulfonyl chloride (68 mg, 0.49 mmol) and triethylamine (68 μL, 0.49 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 100:1→20:1) afforded compound (ZDR259) as a yellow oil (55 mg, 0.18 mmol, 40%). 1H NMR (400 MHz, CDCl3) δ 2.32 (6H, s), 3.73 (2H, s), 3.84 (2H, d, J=7.3 Hz), 5.03-5.07 (1H, m), 5.25-5.27 (1H, m), 5.81-5.91 (1H, m), 7.45-7.54 (2H, m), 7.67 (1H, d, J=8.5 Hz), 7.87 (1H, dd, J=7.5 and 1.6 Hz), 8.14 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C15H19N3O2S: 305.1; found [M+H]+: 306.1.
A solution of compound (ZDR246) (100 mg, 0.15 mmol) and 3-(dimethylamino)-1-propylamine (56 μL, 0.45 mmol) in dichloromethane (5 mL) was stirred at room temperature for 18 h. Trifluoroacetic acid (5 mL) was added and the solution was stirred at room temperature for a further 3 h, and the solvent then removed in vacuo. Purification by RP-HLPC (30% to 90% A/B gradient over 60 min, where A=water+0.1% trifluoroacetic acid and B=acetonitrile+0.1% trifluoroacetic acid) afforded compound (ZDR261) as a white solid (40 mg, 0.05 mmol, 33%). 1H NMR (400 MHz, d6-acetone) δ 2.11 (2H, quin, J=7.0 Hz), 2.96 (6H, s), 3.38 (2H, t, J=7.0 Hz), 3.52 (2H, t, J=7.0 Hz), 4.24 (2H, s), 4.85 (2H, s), 7.52 (1H, t, J=8.0 Hz), 7.56 (1H, d, J=8.4 Hz), 7.63 (1H, dd, J=8.4 and 1.2 Hz), 7.81 (2H, d, J=8.3 Hz), 7.91 (1H, dd, J=7.8 and 1.2 Hz), 8.23 (2H, d, J=8.3 Hz), 8.29 (1H, d, J=8.4 Hz), 8.81 (1H, brs), 10.06 (1H, brs), 11.21 (1H, brs); ESI-MS: m/z calcd for C24H29F3N5O3S: 523.2; found [M+Na]+: 546.1.
A similar procedure to that described for the preparation of compound (ZDR261) was followed using compound (ZDR246) (100 mg, 0.15 mmol) and N-(3-aminopropyl)piperidine (71 μL, 0.45 mmol) in dichloromethane (5 mL), with the subsequent addition of trifluoroacetic acid (5 mL). Purification by RP-HLPC (30% to 90% A/B gradient over 60 min, where A=water+0.1% trifluoroacetic acid and B=acetonitrile+0.1% trifluoroacetic acid) afforded compound (ZDR262) as a white solid (45 mg, 0.06 mmol, 40%). 1H NMR (400 MHz, d6-acetone) δ 1.45-1.52 (1H, m), 1.78-1.81 (1H, m), 1.85-1.91 (4H, m), 2.12 (2H, quin, J=7.2 Hz), 2.92-2.99 (2H, m), 3.31 (2H, t, J=7.2 Hz), 3.47-3.51 (2H, m), 3.58-3.62 (2H, m), 4.19 (2H, s), 4.84 (2H, s), 7.56 (1H, t, J=8.1 Hz), 7.61 (1H, d, J=8.5 Hz), 7.68 (1H, dd, J=8.1 and 1.2 Hz), 7.82 (2H, d, J=8.3 Hz), 7.95 (1H, dd, J=7.6 and 1.2 Hz), 8.24 (2H, d, J=8.3 Hz), 8.36 (1H, d, J=8.5 Hz), 8.67 (1H, brs), 10.04 (1H, brs), 10.83 (1H, brs); ESI-MS: m/z calcd for C27H32F3N5O3S: 563.2; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR124) was followed using compound (ZDR256) (50 mg, 0.11 mmol) and trifluoroacetic acid-dichloromethane (3 mL, 50% v/v) to afford compound (ZDR263) as a pale yellow oil (60 mg, 0.11 mmol, quant.), which was used without further purification. 1H NMR (400 MHz, d6-acetone) δ 2.22-2.29 (2H, m), 2.39-2.43 (2H, m), 2.78-2.90 (1H, m), 3.23 (2H, s), 3.25 (6H, s), 3.69-3.75 (2H, m), 5.00 (2H, s), 7.53 (1H, t, J=8.0 Hz), 7.69-7.71 (2H, m), 7.85 (1H, d, J=7.5 Hz), 8.48 (1H, d, J=8.4 Hz), 8.67 (1H, brs), 9.42 (1H, s); ESI-MS: m/z calcd for C17H24N4O2S: 348.2; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR234) was followed using compound (ZDR246) (100 mg, 0.15 mmol) and saturated methanolic ammonia (3 mL) in dichloromethane (3 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1→10:1) afforded compound (ZDR264) as a pale yellow solid (21 mg, 0.04 mmol, 26%). 1H NMR (400 MHz, CDCl3) δ 1.25 (4.5H, s), 1.52 (4.5H, s), 3.93-4.04 (2H, m), 4.74-4.78 (2H, m), 6.21-6.27 (1H, m), 6.92 (2H, brs), 7.31-7.33 (1H, m), 7.41 (1H, t, J=7.9 Hz), 7.46 (1H, d, J=7.5 Hz), 7.65 (2H, d, J=8.4 Hz), 7.80 (1H, d, J=7.5 Hz), 8.08 (2H, d, J=8.4 Hz), 8.17-8.19 (1H, m), 9.45 (1H, brs).
A similar procedure to that described for the preparation of compound (ZDR234) was followed using compound (ZDR246) (100 mg, 0.15 mmol) and tris(hydroxymethyl)aminomethane (54 mg, 0.45 mmol) in dichloromethane/dimethylformamide (5 mL, 9:1 v/v). The resulting residue was then taken up in trifluoroacetic acid-dichloromethane (3 mL, 50% v/v) and the mixture stirred at room temperature for 3 h, and the solvent removed in vacuo. Purification by RP-HLPC (30% to 90% A/B gradient over 60 min, where A=water+0.1% trifluoroacetic acid and B=acetonitrile+0.1% trifluoroacetic acid) afforded compound (ZDR265) as a white solid (15 mg, 0.02 mmol, 13%, over 2 steps). 1H NMR (400 MHz, d6-acetone) δ 3.82 (6H, s), 4.23 (2H, s), 4.84 (2H, s), 7.59 (1H, t, J=8.0 Hz), 7.64 (1H, d, J=8.5 Hz), 7.72 (1H, dd, J=8.4 and 1.4 Hz), 7.82 (2H, d, J=8.2 Hz), 7.98 (1H, dd, J=7.7 and 1.3 Hz), 8.22 (2H, d, J=8.2 Hz), 8.41 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C23H25F3N4O6S: 542.1; found [M+H]+: 543.2.
A similar procedure to that described for the preparation of compound (ZDR124) was followed using compound (ZDR264) (20 mg, 0.03 mmol) and trifluoroacetic acid-dichloromethane (3 mL, 50% v/v) to afford compound (ZDR266) as a yellow oil (16 mg, 0.03 mmol, quant.), which was used without further purification. 1H NMR (400 MHz, d6-acetone) δ 4.29 (2H, s), 4.93 (2H, s), 7.31 (1H, brs), 7.56 (1H, t, J=8.0 Hz), 7.64 (1H, d, J=8.4 Hz), 7.70 (1H, d, J=8.2 Hz), 7.81 (2H, d, J=8.2 Hz), 7.97-7.99 (1H, m), 8.22 (2H, d, J=8.2 Hz), 8.40 (1H, d, J=8.4 Hz), 9.83 (1H, s); ESI-MS: m/z calcd for C19H17F3N4O3S: 438.1; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR234) was followed using compound (ZDR246) (100 mg, 0.15 mmol), hydroxylamine hydrochloride (31 mg, 0.45 mmol) and potassium carbonate (70 mg, 0.45 mmol) in aqueous tetrahydrofuran (5 mL, 1:1 v/v). The resulting residue was then taken up in trifluoroacetic acid-dichloromethane (3 mL, 50% v/v) and the mixture stirred at room temperature for 3 h, and the solvent removed in vacuo. Purification by RP-HLPC (30% to 90% A/B gradient over 60 min, where A=water+0.1% trifluoroacetic acid and B=acetonitrile+0.1% trifluoroacetic acid) afforded compound (ZDR267) as a white solid (20 mg, 0.03 mmol, 20%). 1H NMR (300 MHz, d6-acetone) δ 4.32 (2H, s), 4.92 (2H, s), 7.56 (1H, t, J=8.0 Hz), 7.62 (1H, d, J=8.5 Hz), 7.68 (1H, dd, J=8.4 and 1.1 Hz), 7.74-7.76 (2H, m), 7.95 (1H, dd, J=7.6 and 1.3 Hz), 8.17-8.20 (2H, m), 8.36 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C19H17F3N4O4S: 454.4; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR124) was followed using compound (ZDR234) (28 mg, 0.04 mmol) and trifluoroacetic acid-dichloromethane (3 mL, 50% v/v) to afford compound (ZDR268) as a pale yellow solid (28 mg, 0.04 mmol, quant.), which was used without further purification. 1H NMR (400 MHz, d6-acetone) δ 3.15 (6H, s), 3.60-3.62 (2H, m), 3.94-3.97 (2H, m), 4.28 (2H, s), 4.93 (2H, s), 7.59 (1H, t, J=8.0 Hz), 7.64 (1H, d, J=8.5 Hz), 7.72 (1H, d, J=8.3 Hz), 7.82 (2H, d, J=8.2 Hz), 7.97-7.99 (1H, m), 8.22 (2H, d, J=8.2 Hz), 8.42 (1H, d, J=8.5 Hz), 8.62 (1H, t, J=5.6 Hz), 9.65 (1H, brs); ESI-MS: m/z calcd for C23H26F3N5O3S: 509.2; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR124) was followed using compound (ZDR247) (49 mg, 0.07 mmol) and trifluoroacetic acid-dichloromethane (3 mL, 50% v/v) to afford compound (ZDR269) as a pale yellow oil (52 mg, 0.07 mmol, quant.), which was used without further purification. 1H NMR (400 MHz, d6-acetone) δ 1.50-1.59 (1H, m), 1.77-1.81 (1H, m), 1.90-1.96 (4H, m), 3.07-3.12 (2H, m), 3.52-3.54 (2H, m), 3.93-3.95 (4H, m), 4.28 (2H, s), 4.92 (2H, s), 7.57 (1H, t, J=8.0 Hz), 7.63 (1H, d, J=8.5 Hz), 7.71 (1H, d, J=8.2 Hz), 7.82 (2H, d, J=8.2 Hz), 7.99 (1H, d, J=7.7 Hz), 8.22 (2H, d, J=8.2 Hz), 8.41 (1H, d, J=8.5 Hz), 8.67 (1H, brt, J=5.6 Hz), 8.89 (1H, brs), 9.99 (1H, s); ESI-MS: m/z calcd for C26H30F3N5O3S: 549.2; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR124) was followed using compound (ZDR253) (58 mg, 0.10 mmol) and trifluoroacetic acid-dichloromethane (3 mL, 50% v/v) to afford compound (ZDR270) as a beige solid (55 mg, 0.10 mmol, quant.), which was used without further purification. 1H NMR (400 MHz, d6-acetone) δ 2.87 (3H, s), 4.26-4.36 (2H, m), 4.92-4.96 (2H, m), 7.56 (1H, t, J=8.0 Hz), 7.41 (1H, d, J=8.4 Hz), 7.67 (1H, d, J=8.0 Hz), 7.80 (2H, d, J=8.2 Hz), 7.95 (1H, d, J=7.4 Hz), 8.21 (2H, d, J=8.2 Hz), 8.37 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C20H19F3N4O3S: 452.1; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (95 mg, 0.47 mmol), 4-bromobenzenesulfonyl chloride (133 mg, 0.52 mmol) and triethylamine (73 μL, 0.52 mmol) In dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR305) as a pale yellow solid (160 mg, 0.38 mmol, 80%). 1H NMR (400 MHz, CDCl3) δ 2.27 (6H, s), 3.68 (2H, s), 7.37-7.46 (4H, m), 7.58 (1H, d, J=8.4 Hz), 7.71 (2H, d, J=8.5 Hz), 7.79 (1H, d, J=7.4 Hz), 8.04 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C18H18BrN3O2S: 419.0; found [M+H]+: 420.0.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (95 mg, 0.47 mmol), 4-(difluoromethoxy)benzenesulfonyl chloride (126 mg, 0.52 mmol) and triethylamine (73 μL, 0.52 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR306) as a yellow solid (178 mg, 0.44 mmol, 92%). 1H NMR (400 MHz, CDCl3) δ 2.27 (6H, s), 3.69 (2H, s), 6.46 (1H, t, J=72.7 Hz), 7.00 (2H, d, J=8.8 Hz), 7.37-7.46 (2H, m), 7.56 (1H, d, J=8.5 Hz), 7.79 (1H, dd, J=7.4 and 1.4 Hz), 7.85-7.89 (2H, m), 8.04 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C19H19F2N3O3S: 407.1; found [M+H]+: 408.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (95 mg, 0.47 mmol), 4-tert-butylbenzenesulfonyl chloride (121 mg, 0.52 mmol) and triethylamine (73 μL, 0.52 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR307) as a white solid (173 mg, 0.44 mmol, 92%). 1H NMR (400 MHz, CDCl3) δ 1.20 (9H, s), 2.28 (6H, s), 3.70 (2H, s), 7.31-7.34 (2H, m), 7.36-7.42 (2H, m), 7.57 (1H, d, J=8.5 Hz), 7.79-7.82 (3H, m), 8.03 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C22H27N3O2S: 397.2; found [M+H]+: 398.2.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (95 mg, 0.47 mmol), 3-chlorosulfonyl-benzoic acid methyl ester (122 mg, 0.52 mmol) and triethylamine (73 μL, 0.52 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR308) as an orange oil (122 mg, 0.31 mmol, 64%). 1H NMR (400 MHz, CDCl3) δ 2.25 (6H, s), 3.67 (2H, s), 3.84 (3H, s), 7.34-7.42 (3H, m), 7.53 (1H, d, J=8.4 Hz), 7.79 (1H, d, J=7.0 Hz), 7.99-8.01 (3H, m), 8.53 (1H, s); ESI-MS: m/z calcd for C20H21N3O4S: 399.1; found [M+H]+: 400.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (95 mg, 0.47 mmol), 3-bromobenzenesulfonyl chloride (133 mg, 0.52 mmol) and triethylamine (73 μL, 0.52 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR309) as a yellow solid (160 mg, 0.38 mmol, 80%). 1H NMR (400 MHz, CDCl3) δ 2.28 (6H, s), 3.70 (2H, s), 7.14 (1H, t, J=7.9 Hz), 7.38-7.49 (3H, m), 7.56 (1H, d, J=8.4 Hz), 7.75 (1H, d, J=7.9 Hz), 7.80 (1H, dd, J=7.5 and 1.2 Hz), 8.03-8.05 (2H, m); ESI-MS: m/z calcd for C18H18BrN3O2S: 419.0; found [M+H]+: 420.0.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (88 mg, 0.44 mmol), 3-methylsulfonylbenzenesulfonyl chloride (122 mg, 0.48 mmol) and triethylamine (67 μL, 0.48 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR310) as a pale yellow foam (137 mg, 0.33 mmol, 75%). 1H NMR (400 MHz, CDCl3) δ 2.30 (6H, s), 2.92 (3H, s), 3.72 (2H, s), 7.42-7.59 (4H, m), 7.85 (1H, dd, J=7.4 and 1.1 Hz), 7.96 (1H, d, J=7.9 Hz), 8.06 (1H, d, J=8.4 Hz), 8.13 (1H, d, J=8.4 Hz), 8.43 (1H, s); ESI-MS: m/z calcd for C19H21N3O4S2: 419.1; found [M+H]+: 420.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (130 mg, 0.65 mmol), 3-acetylbenzenesulfonyl chloride (155 mg, 0.71 mmol) and triethylamine (99 μL, 0.71 mmol) In dichloromethane (6 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR311) as a brown oil (201 mg, 0.52 mmol, 81%). 1H NMR (400 MHz, CDCl3) δ 2.27 (6H, s), 2.50 (3H, s), 3.69 (2H, s), 7.39-7.47 (3H, m), 7.56 (1H, d, J=8.5 Hz), 7.84 (1H, dd, J=7.5 and 1.5 Hz), 7.96-7.99 (1H, m), 8.03-8.07 (2H, m), 8.41 (1H, t, J=1.7 Hz); ESI-MS: m/z calcd for C20H21N3O3S: 383.1; found [M+H]+: 384.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (88 mg, 0.44 mmol), 3-fluorobenzenesulfonyl chloride (94 mg, 0.48 mmol) and triethylamine (67 μL, 0.48 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR312) as brown solid (138 mg, 0.38 mmol, 88%). 1H NMR (400 MHz, CDCl3) δ 2.30 (6H, s), 3.72 (2H, s), 7.08-7.13 (1H, m), 7.27-7.33 (1H, m), 7.40-7.49 (2H, m), 7.58-7.62 (2H, m), 7.65-7.67 (1H, m), 7.82 (1H, dd, J=7.5 and 1.5 Hz), 8.07 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C18H18FN3O2S: 359.1; found [M+H]+: 360.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (88 mg, 0.44 mmol), 3-nitrobenzenesulfonyl chloride (107 mg, 0.48 mmol) and triethylamine (67 μL, 0.48 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR313) as a red/orange oil (67 mg, 0.17 mmol, 40%). 1H NMR (400 MHz, CDCl3) δ 2.29 (6H, s), 3.72 (2H, s), 7.41-7.59 (4H, m), 7.85 (1H, dd, J=7.5 and 1.2 Hz), 8.06 (1H, d, J=8.5 Hz), 8.18 (1H, m), 8.24 (1H, m), 8.74 (1H, t, J=1.9 Hz); ESI-MS: m/z calcd for C18H18N4O4S: 386.1; found [M+H]+: 387.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (88 mg, 0.44 mmol), 3-methoxybenzene sulfonyl chloride (99 mg, 0.48 mmol) and triethylamine (67 μL, 0.48 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR314) as a pale brown solid (139 mg, 0.37 mmol, 86%). 1H NMR (400 MHz, CDCl3) δ 2.29 (6H, s), 3.70 (2H, s), 3.70 (3H, s), 6.91-6.94 (1H, m), 7.22 (1H, t, J=8.0 Hz), 7.37-7.47 (4H, m), 7.59 (1H, d, J=8.5 Hz), 7.82 (1H, dd, J=7.5 and 1.5 Hz), 8.06 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C19H21N3O3S: 371.1; found [M+H]+: 372.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (88 mg, 0.44 mmol), 3-toluenesulfonyl chloride (92 mg, 0.48 mmol) and triethylamine (67 μL, 0.48 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR315) as a pale yellow solid (124 mg, 0.35 mmol, 80%). 1H NMR (400 MHz, CDCl3) δ 2.28 (3H, s), 2.35 (6H, s), 3.79 (2H, s), 7.19-7.22 (2H, m), 7.39-7.46 (2H, m), 7.59 (1H, d, J=8.5 Hz), 7.67-7.72 (2H, m), 7.79 (1H, dd, J=7.0 and 1.5 Hz), 8.07 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C19H21N3O2S: 355.1; found [M+H]+: 356.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.50 mmol), 3,3,3-trifluoropropane-1-sulfonyl chloride (69 μL, 0.55 mmol) and triethylamine (76 μL, 0.55 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR316) as an orange solid (144 mg, 0.40 mmol, 80%). 1H NMR (400 MHz, CDCl3) δ 2.34 (6H, s), 2.65-2.77 (2H, m), 3.27-3.31 (2H, m), 3.78 (2H, s), 7.51 (1H, t, J=7.9 Hz), 7.59-7.61 (1H, m), 7.68 (1H, d, J=8.4 Hz), 7.85 (1H, dd, J=7.5 and 1.0 Hz), 8.18 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C18H18F3N3O2S: 361.1; found [M+H]+: 362.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.50 mmol), phenylmethanesulfonyl chloride (104 mg, 0.55 mmol) and triethylamine (76 μL, 0.55 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR317) as a brown oil (44 mg, 0.12 mmol, 25%). 1H NMR (400 MHz, CDCl3) δ 2.29 (6H, s), 3.63 (2H, s), 4.41 (2H, s), 7.07-7.09 (2H, m), 7.12-7.16 (2H, m), 7.23-7.26 (1H, m), 7.46 (1H, t, J=7.8 Hz), 7.52 (1H, dd, J=8.0 and 1.5 Hz), 7.66 (1H, d, J=8.4 Hz), 7.81 (1H, dd, J=7.5 and 1.5 Hz), 8.14 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C19H21N3O2S: 355.1; found [M+H]+: 356.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (170 mg, 0.84 mmol), 2-propanesulfonyl chloride (104 μL, 0.93 mmol) and triethylamine (130 μL, 0.93 mmol) in dichloromethane (8 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR318) as a dark brown solid (206 mg, 0.67 mmol, 79%). 1H NMR (400 MHz, CDCl3) δ 1.26-1.28 (6H, m), 2.74 (6H, s), 3.34-3.35 (1H, m), 4.24 (2H, s), 6.98-7.01 (1H, m), 7.14-7.18 (1H, m), 7.33-7.43 (2H, m), 8.11-8.15 (1H, m); ESI-MS: m/z calcd for C15H21N3O2S: 307.1; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.50 mmol), methyl 3-chlorosulfonylthiophene-2-carboxylate (132 mg, 0.55 mmol) and triethylamine (76 μL, 0.55 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR319) as an orange solid (78 mg, 0.19 mmol, 39%). 1H NMR (400 MHz, CDCl3) δ 2.30 (6H, s), 3.73 (2H, s), 3.97 (3H, s), 7.35-7.45 (3H, m), 7.57-7.62 (2H, m), 7.87 (1H, dd, J=7.8 and 1.5 Hz), 8.05 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C18H19N3O4S2: 405.1; found [M+H]+: 406.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.50 mmol), 4-(trifluoromethyl)benzylsulfonyl chloride (141 mg, 0.55 mmol) and triethylamine (76 μL, 0.55 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR320) as a pale brown oil (163 mg, 0.38 mmol, 77%). 1H NMR (400 MHz, CDCl3) δ 2.28 (6H, s), 3.61 (2H, s), 4.45 (2H, s), 7.19 (2H, d, J=8.1 Hz), 7.37 (2H, d, J=8.1 Hz), 7.42-7.54 (2H, m), 7.65 (1H, d, J=8.4 Hz), 7.82 (1H, dd, J=7.6 and 1.6 Hz), 8.14 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C20H20F3N3O2S: 423.1; found [M+H]+: 424.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.50 mmol), 1-butane sulfonyl chloride (71 μL, 0.55 mmol) and triethylamine (76 μL, 0.55 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR321) as an orange oil (100 mg, 0.31 mmol, 63%). 1H NMR (400 MHz, CDCl3) δ 0.78 (3H, t, J=7.4 Hz), 1.26-1.35 (2H, m), 1.74-1.82 (2H, m), 2.31 (6H, s), 3.08-3.12 (2H, m), 3.73 (2H, s), 7.43-7.52 (2H, m), 7.66 (1H, d, J=8.4 Hz), 7.82 (1H, dd, J=7.5 and 1.5 Hz), 8.13 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C16H23N3O2S: 321.2; found [M+H]+: 322.2.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.50 mmol), 2-chloropyridine-5-sulfonyl chloride (116 mg, 0.55 mmol) and triethylamine (76 μL, 0.55 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR322) as a yellow solid (90 mg, 0.24 mmol, 48%). 1H NMR (400 MHz, CDCl3) δ 2.28 (6H, s), 3.69 (2H, s), 7.26-7.28 (1H, m), 7.44 (1H, t, J=7.9 Hz), 7.52 (1H, dd, J=7.9 and 1.5 Hz), 7.58 (1H, d, J=8.5 Hz), 7.85 (1H, dd, J=7.5 and 0.9 Hz), 8.04-8.09 (2H, m), 8.82-8.83 (1H, m); ESI-MS: m/z calcd for C17H17ClN4O2S: 376.1; found [M+H]+: 377.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.50 mmol), cyclopropanesulfonyl chloride (56 μL, 0.55 mmol) and triethylamine (76 μL, 0.55 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR323) as a brown solid (41 mg, 0.13 mmol, 27%). 1H NMR (400 MHz, CDCl3) δ 0.83-0.89 (2H, m), 1.25-1.29 (2H, m), 2.33 (6H, s), 2.49-2.56 (1H, m), 3.75 (2H, s), 7.45-7.54 (2H, m), 7.66 (1H, d, J=8.5 Hz), 7.88 (1H, dd, J=7.5 and 1.5 Hz), 8.14 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C15H19N3O2S: 305.1; found [M+H]+: 306.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (95 mg, 0.47 mmol), 4-formylbenzene-1-sulfonyl chloride (106 mg, 0.52 mmol) and triethylamine (72 μL, 0.52 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR324) as a yellow oil (70 mg, 0.19 mmol, 40%). 1H NMR (400 MHz, CDCl3) δ 2.28 (6H, s), 3.70 (2H, s), 7.39-7.48 (2H, m), 7.56 (1H, d, J=8.4 Hz), 7.80-7.85 (3H, m), 8.03-8.06 (3H, m), 9.94 (1H, s); ESI-MS: m/z calcd for C19H19N3O3S: 369.1; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (95 mg, 0.47 mmol), 5-chlorothiophene-2-sulfonyl chloride (69 μL, 0.52 mmol) and triethylamine (72 μL, 0.52 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR326) as a yellow solid (38 mg, 0.10 mmol, 21%). 1H NMR (400 MHz, CDCl3) δ 2.29 (6H, s), 3.71 (2H, s), 6.70 (1H, d, J=4.0 Hz), 7.34 (1H, d, J=4.0 Hz), 7.45-7.54 (2H, m), 7.62 (1H, d, J=8.4 Hz), 7.86 (1H, dd, J=7.5 and 1.3 Hz), 8.10 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C16H16ClN3O2S2: 381.0; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (95 mg, 0.47 mmol), 3-acetamidobenzene-1-sulfonyl chloride (121 mg, 0.52 mmol) and triethylamine (72 μL, 0.52 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR327) as a yellow solid (31 mg, 0.08 mmol, 16%). 1H NMR (400 MHz, CDCl3) δ 2.12 (3H, s), 2.28 (6H, s), 3.71 (2H, s), 7.22-7.30 (1H, m), 7.37-7.41 (1H, m), 7.43-7.46 (1H, m), 7.50 (1H, d, J=8.4 Hz), 7.54 (1H, d, J=7.9 Hz), 7.83 (1H, dd, J=7.5 Hz and 1.5 Hz), 7.96 (1H, s), 7.99-8.01 (1H, m), 8.04 (1H, d, J=8.4 Hz), 8.10 (1H, br s); ESI-MS: m/z calcd for C20H22N4O3S: 398.1; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (95 mg, 0.47 mmol), pyridine-3-sulfonyl chloride (63 μL, 0.52 mmol) and triethylamine (72 μL, 0.52 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR328) as a yellow solid (123 mg, 0.36 mmol, 76%). 1H NMR (400 MHz, CDCl3) δ 2.28 (6H, s), 3.70 (2H, s), 7.24-7.27 (1H, m), 7.41-7.45 (1H, m), 7.48-7.50 (1H, m), 7.59 (1H, d, J=8.4 Hz), 7.85 (1H, dd, J=7.5 and 1.2 Hz), 8.06 (1H, d, J=8.4 Hz), 8.12-8.15 (1H, m), 8.61 (1H, dd, J=5.0 and 1.5 Hz), 9.06-9.07 (1H, m); ESI-MS: m/z calcd for C17H18N4O2S: 342.1; found [M+H]+: 343.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (84 mg, 0.42 mmol), 4-(trifluoromethylsulfanyl)benzenesulfonyl chloride (127 mg, 0.46 mmol) and triethylamine (64 μL, 0.46 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR330) as an orange solid (140 mg, 0.32 mmol, 76%). 1H NMR (400 MHz, CDCl3) δ 2.29 (6H, s), 3.69 (2H, s), 7.41-7.50 (2H, m), 7.58-7.60 (3H, m), 7.83 (1H, dd, J=7.5 and 1.7 Hz), 7.90 (2H, d, J=8.4 Hz), 8.06 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C19H18F3N3O2S2: 441.1; found [M+H]+: 442.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (84 mg, 0.42 mmol), 3-carbamoylbenzene-1-sulfonyl chloride (101 mg, 0.46 mmol) and triethylamine (64 μL, 0.46 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR331) as a yellow solid (123 mg, 0.32 mmol, 77%). 1H NMR (400 MHz, CDCl3) δ 2.26 (6H, s), 3.70 (2H, s), 6.26 (1H, br s), 6.98 (1H, br s), 7.33-7.48 (4H, m), 7.80 (1H, dd, J=7.5 and 1.6 Hz), 7.94 (2H, t, J=6.8 Hz), 8.01 (1H, d, J=8.4 Hz), 8.44 (1H, s); ESI-MS: m/z calcd for C19H20N4O3S: 384.1; found [M+H]+: 385.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (84 mg, 0.42 mmol), methyl N-[4-(chlorosulfonyl)phenyl]carbamate (115 mg, 0.46 mmol) and triethylamine (64 μL, 0.46 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR332) as a brown oil (153 mg, 0.37 mmol, 88%). 1H NMR (400 MHz, CDCl3) δ 2.27 (6H, s), 3.67 (3H, s), 3.69 (2H, s), 7.32-7.42 (4H, m), 7.53 (1H, d, J=8.5 Hz), 7.74-7.77 (3H, m), 8.01 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C20H21N4O4S: 414.1; found [M+H]+: 415.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (113 mg, 0.56 mmol), tert-butyl[4-(chlorosulfonyl)phenyl]carbamate (180 mg, 0.62 mmol) and triethylamine (86 μL, 0.62 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR333) as a white foam (209 mg, 0.46 mmol, 82%). 1H NMR (400 MHz, CDCl3) δ 1.46 (9H, s), 2.29 (6H, s), 3.71 (2H, s), 6.58 (1H, br s), 7.30-7.33 (2H, m), 7.36-7.44 (2H, m), 7.58 (1H, d, J=8.5 Hz), 7.76-7.81 (3H, m), 8.05 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C23H28N4O4S: 456.2; found [M+H]+: 457.2.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.50 mmol), 2,4-dichlorobenzenesulfonyl chloride (134 mg, 0.55 mmol) and triethylamine (76 μL, 0.55 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR335) as a pale yellow solid (156 mg, 0.38 mmol, 77%). 1H NMR (400 MHz, CDCl3) δ 2.32 (6H, s), 3.74 (2H, s), 7.27 (1H, dd, J=8.5 and 2.0 Hz), 7.32 (1H, d, J=2.0 Hz), 7.35 (1H, d, J=7.8 Hz), 7.42 (1H, dd, J=8.4 and 1.1 Hz), 7.64 (1H, d, J=8.5 Hz), 7.71 (1H, dd, J=7.6 and 1.3 Hz), 8.06 (1H, d, J=8.4 Hz), 8.10 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C18H17Cl2N3O2S: 409.0; found [M+H]+: 410.0.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.50 mmol), 2,3-dichlorobenzenesulfonyl chloride (134 mg, 0.55 mmol) and triethylamine (76 μL, 0.55 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR336) as a tan solid (169 mg, 0.41 mmol, 83%). 1H NMR (400 MHz, CDCl3) δ 2.32 (6H, s), 3.75 (2H, s), 7.24 (1H, t, J=7.9 Hz), 7.33 (1H, t, J=7.9 Hz), 7.41 (1H, d, J=7.9 Hz), 7.50 (1H, dd, J=7.9 and 1.1 Hz), 7.63 (1H, d, J=8.4 Hz), 7.73 (1H, d, J=7.6 Hz), 8.05 (1H, d, J=8.4 Hz), 8.10 (1H, dd, J=7.9 and 1.3 Hz); ESI-MS: m/z calcd for C18H17Cl2N3O2S: 409.0; found [M+H]+: 410.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.50 mmol), 2,4,5-trifluorobenzenesulfonyl chloride (76 μL, 0.55 mmol) and triethylamine (76 μL, 0.55 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR337) as a pale yellow solid (190 mg, 0.48 mmol, 97%). 1H NMR (400 MHz, CDCl3) δ 2.32 (6H, s), 3.75 (2H, s), 6.85-6.92 (1H, m), 7.40 (1H, t, J=8.0 Hz), 7.49 (1H, dd, J=8.4 and 1.2 Hz), 7.63 (1H, d, J=8.5 Hz), 7.76 (1H, dd, J=7.6 and 1.1 Hz), 7.81 (1H, td, J=8.8 and 6.4 Hz), 8.09 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C18H16F3N3O2S: 395.1; found [M+H]+: 396.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.50 mmol), 3,4-difluorobenzenesulfonyl chloride (73 μL, 0.55 mmol) and triethylamine (76 μL, 0.55 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR338) as a pale orange solid (180 mg, 0.48 mmol, 96%). 1H NMR (400 MHz, CDCl3) δ 2.30 (6H, s), 3.72 (2H, s), 7.06-7.12 (1H, m), 7.41-7.44 (1H, m), 7.49 (1H, dd, J=8.4 and 1.3 Hz), 7.57 (1H, d, J=8.5 Hz), 7.63-7.67 (1H, m), 7.73-7.78 (1H, m), 7.82 (1H, dd, J=7.5 and 1.3 Hz), 8.07 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C18H17F2N3O2S: 377.1; found [M+H]+: 378.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.50 mmol), isoquinoline-5-sulfonylchloride hydrochloride (144 mg, 0.55 mmol) and triethylamine (152 μL, 1.09 mmol) In dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR339) as a pale yellow solid (88 mg, 0.22 mmol, 44%). 1H NMR (400 MHz, CDCl3) δ 2.25 (6H, s), 3.62 (2H, s), 7.32-7.39 (2H, m), 7.50 (1H, d, J=8.4 Hz), 7.55 (1H, t, J=7.8 Hz), 7.74 (1H, dd, J=7.5 and 1.6 Hz), 7.97 (1H, d, J=8.4 Hz), 8.03-8.05 (1H, m), 8.47 (1H, dd, J=7.5 and 1.6 Hz), 8.61-8.67 (2H, m), 9.20 (1H, d, J=0.7 Hz); ESI-MS: m/z calcd for C21H20N4O2S: 392.1; found [M+H]+: 393.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (100 mg, 0.50 mmol), 8-quinolinesulfonyl chloride (124 mg, 0.55 mmol) and triethylamine (76 μL, 0.55 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR340) as a grey solid (70 mg, 0.17 mmol, 34%). 1H NMR (400 MHz, d6-DMSO) δ 2.30 (6H, s), 3.81 (2H, s), 7.41 (1H, t, J=8.0 Hz), 7.50 (1H, dd, J=8.8 and 1.5 Hz), 7.57 (1H, d, J=8.4 Hz), 7.64-7.72 (2H, m), 7.83 (1H, dd, J=7.5 and 1.7 Hz), 8.20-8.23 (2H, m), 8.42-8.46 (2H, m), 9.14 (1H, dd, J=4.0 and 1.5 Hz); ESI-MS: m/z calcd for C21H20N4O2S: 392.1; found [M+H]+: 393.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), n-butylamine (80 μL, 0.81 mmol) and sodium triacetoxyborohydride (122 mg, 0.58 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→15:1) afforded compound (ZDR401) as a pale yellow solid (76 mg, 0.17 mmol, 66%). 1H NMR (400 MHz, CDCl3) δ 0.90 (3H, t, J=7.4 Hz), 1.31-1.40 (2H, m), 1.68-1.75 (2H, m), 2.89 (2H, t, J=7.6 Hz), 4.29 (2H, s), 7.36-7.45 (3H, m), 7.54 (2H, d, J=8.5 Hz), 7.79 (1H, dd, J=7.5 and 1.5 Hz), 8.02-8.08 (3H, m), 8.93 (2H, brs); ESI-MS: m/z calcd for C21H22F3N3O2S: 437.1; found [M+H]+: 438.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), sec-butylamine (80 μL, 0.79 mmol) and sodium triacetoxyborohydride (120 mg, 0.57 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→15:1) afforded compound (ZDR402) as a pale yellow solid (32 mg, 0.07 mmol, 28%). 1H NMR (400 MHz, CDCl3) δ 0.95 (3H, t, J=7.6 Hz), 1.17 (3H, d, J=6.4 Hz), 1.42-1.53 (1H, m), 1.59-1.71 (1H, m), 2.73-2.81 (1H, m), 4.08-4.18 (2H, m), 5.00 (2H, brs), 7.39-7.43 (1H, m), 7.45-7.48 (2H, m), 7.60 (2H, d, J=8.2 Hz), 7.81 (1H, dd, J=7.5 and 1.5 Hz), 8.03-8.07 (3H, m); ESI-MS: m/z calcd for C21H22F3N3O2S: 437.1; found [M+H]+: 438.2.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), iso-butylamine (80 μL, 0.81 mmol) and sodium triacetoxyborohydride (111 mg, 0.52 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→15:1) afforded compound (ZDR403) as a yellow oil (73 mg, 0.17 mmol, 63%). 1H NMR (400 MHz, CDCl3) δ 0.98 (6H, d, J=6.6 Hz), 1.92 (1H, m), 2.57 (2H, d, J=6.8 Hz), 4.15 (2H, s), 6.21 (2H, brs), 7.40-7.49 (3H, m), 7.59 (2H, d, J=8.4 Hz), 7.82 (1H, dd, J=7.4 and 1.5 Hz), 8.03-8.08 (3H, m); ESI-MS: m/z calcd for C21H22F3N3O2S: 437.1; found [M+H]+: 438.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), cyclopentylamine (80 μL, 0.81 mmol) and sodium triacetoxyborohydride (114 mg, 0.54 mmol) In dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→15:1) afforded compound (ZDR404) as a yellow solid (79 mg, 0.18 mmol, 67%). 1H NMR (400 MHz, CDCl3) δ 1.03-1.68 (8H, m), 2.71-2.77 (1H, m), 4.21 (2H, s), 7.27-7.36 (3H, m), 7.50 (2H, d, J=8.3 Hz), 7.72 (1H, dd, J=6.7 and 1.9 Hz), 7.93 (1H, d, J=8.3 Hz), 8.03 (2H, d, J=8.3 Hz), 8.50 (2H, brs); ESI-MS: m/z calcd for C22H22F3N3O2S: 449.1; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), cyclohexylamine (90 μL, 0.79 mmol) and sodium triacetoxyborohydride (112 mg, 0.53 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→15:1) afforded compound (ZDR405) as a pale yellow solid (15 mg, 0.03 mmol, 12%). 1H NMR (400 MHz, CDCl3) δ 0.83-0.90 (2H, m), 1.48-1.61 (4H, m), 1.70-1.81 (2H, m), 1.87-1.93 (2H, m), 3.20-3.22 (1H, m), 4.11 (2H, s), 7.39-7.48 (3H, m), 7.60 (2H, d, J=8.4 Hz), 7.81 (1H, dd, J=7.5 and 1.5 Hz), 8.02-8.07 (3H, m); ESI-MS: m/z calcd for C23H24F3N3O2S: 463.2; found [M+H]+: N/A.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), cyclohexanemethylamine (110 μL, 0.85 mmol) and sodium triacetoxyborohydride (118 mg, 0.56 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→15:1) afforded compound (ZDR406) as a pale yellow solid (56 mg, 0.12 mmol, 45%). 1H NMR (400 MHz, CDCl3) δ 0.92-1.87 (11H, m), 2.69 (2H, d, J=6.9 Hz), 4.28 (2H, s), 7.38-7.47 (3H, m), 7.58 (2H, d, J=8.5 Hz), 7.81 (1H, dd, J=7.4 and 1.5 Hz), 8.05-8.10 (3H, m), 8.34 (2H, brs); ESI-MS: m/z calcd for C24H26F3N3O2S: 477.2; found [M+H]+: 478.2.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), pyrrolidine (70 μL, 0.84 mmol) and sodium triacetoxyborohydride (115 mg, 0.54 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→15:1) afforded compound (ZDR407) as a tan solid (37 mg, 0.09 mmol, 33%). 1H NMR (400 MHz, CDCl3) δ 1.85-1.89 (4H, m), 2.64-2.69 (4H, m), 3.99 (2H, s), 7.41-7.45 (1H, m), 7.47-7.50 (1H, m), 7.54 (1H, d, J=8.5 Hz), 7.59 (2H, d, J=8.5 Hz), 7.87 (1H, dd, J=7.5 and 1.5 Hz), 8.02 (2H, d, J=8.5 Hz), 8.07 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C21H20F3N3O2S: 435.1; found [M+H]+: 436.1.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), hexamethyleneimine (90 μL, 0.80 mmol) and sodium triacetoxyborohydride (117 mg, 0.55 mmol) in dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→15:1) afforded compound (ZDR408) as a brown solid (105 mg, 0.23 mmol, 86%). 1H NMR (400 MHz, CDCl3) δ 1.64-1.70 (8H, m), 2.71-2.76 (4H, m), 3.96 (2H, s), 7.41 (1H, t, J=7.9 Hz), 7.46-7.49 (1H, m), 7.59 (2H, d, J=8.4 Hz), 7.64 (1H, d, J=8.4 Hz), 7.84 (1H, dd, J=7.5 and 1.0 Hz), 8.01-8.06 (3H, m), 9.52 (1H, brs); ESI-MS: m/z calcd for C23H24F3N3O2S: 463.2; found [M+H]+:464.2.
A similar procedure to that described for the preparation of compound (ZDR022) was followed using compound (ZDR019) (100 mg, 0.26 mmol), dipropylamine (110 μL, 0.80 mmol) and sodium triacetoxyborohydride (121 mg, 0.57 mmol) In dichloromethane (5 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→15:1) afforded compound (ZDR409) as a tan solid (23 mg, 0.05 mmol, 19%). 1H NMR (400 MHz, CDCl3) δ 0.86 (6H, t, J=7.2 Hz), 1.45-1.54 (4H, m), 2.44 (4H, t, J=7.2 Hz), 3.81 (2H, s), 7.39-7.43 (1H, m), 7.46-7.49 (1H, m), 7.60 (2H, d, J=8.5 Hz), 7.68 (1H, d, J=8.5 Hz), 7.82 (1H, dd, J=7.5 and 1.3 Hz), 8.00-8.05 (3H, m); ESI-MS: m/z calcd for C23H26F3N3O2S: 465.2; found [M+H]+: 466.2.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (79 mg, 0.36 mmol), ethenesulfonyl chloride (50 mg, 0.36 mmol) and triethylamine (56 μL, 0.40 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR500) as a yellow oil (58 mg, 0.20 mmol, 55%). 1H NMR (400 MHz, CDCl3) δ 2.32 (6H, s), 3.74 (2H, s), 5.88 (1H, d, J=9.8 Hz), 6.36 (1H, d, J=16.6 Hz), 6.56 (1H, dd, J=16.6 and 9.8 Hz), 7.44 (1H, t, J=7.9 Hz), 7.50 (1H, dd, J=8.4 and 1.4 Hz), 7.65 (1H, d, J=8.4 Hz), 7.72 (1H, dd, J=7.5 and 1.4 Hz), 8.12 (1H, d, J=8.4 Hz); ESI-MS: m/z calcd for C14H17N3O2S: 291.1; found [M+H]+: 292.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (56 mg, 0.25 mmol), (5-methyl-1,2-oxazol-3-yl)methanesulfonyl chloride (50 mg, 0.25 mmol) and triethylamine (39 μL, 0.28 mmol) in dichloromethane (3 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR501) as a pale yellow oil (47 mg, 0.13 mmol, 51%). 1H NMR (400 MHz, CDCl3) δ 2.32 (6H, s), 2.38 (3H, s), 3.70 (2H, s), 4.45 (2H, s), 6.20 (1H, s), 7.45-7.49 (1H, m), 7.55 (1H, d, J=8.0 Hz), 7.65 (1H, d, J=8.5 Hz), 7.86 (1H, d, J=7.5 Hz), 8.14 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C17H20N4O3S: 360.1; found [M+H]+: 361.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (55 mg, 0.27 mmol), oxane-4-sulfonyl chloride (50 mg, 0.27 mmol) and triethylamine (38 μL, 0.30 mmol) in dichloromethane (3 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR502) as a pale yellow oil (31 mg, 0.09 mmol, 33%). 1H NMR (400 MHz, CDCl3) δ 1.97-2.02 (4H, m), 2.32 (6H, s), 3.20-3.21 (3H, m), 3.75 (2H, s), 3.97-4.01 (2H, m), 7.45-7.49 (1H, m), 7.52-7.55 (1H, m), 7.67 (1H, d, J=8.5 Hz), 7.88 (1H, dd, J=7.5 and 1.5 Hz), 8.15 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C17H23N3O3S: 349.1; found [M+H]+: 350.2.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (70 mg, 0.32 mmol), cyclopropylmethanesulfonyl chloride (50 mg, 0.32 mmol) and triethylamine (49 μL, 0.35 mmol) in dichloromethane (3 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR503) as a yellow oil (66 mg, 0.20 mmol, 62%). δ 1H NMR (400 MHz, CDCl3) δ 0.12-0.16 (2H, m), 0.52-0.57 (2H, m), 1.10-1.18 (1H, m), 2.31 (6H, s), 3.08 (2H, d, J=7.1 Hz), 3.74 (2H, s), 7.46 (1H, t, J=7.8 Hz), 7.41 (1H, dd, J=8.4 and 1.5 Hz), 7.67 (1H, d, J=8.4 Hz), 7.86 (1H, dd, J=7.5 and 1.5 Hz), 8.14 (1H, d, J=8.4 Hz), 9.09 (1H, brs); ESI-MS: m/z calcd for C16H21N3O2S: 319.1; found [M+H]+: 320.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (51 mg, 0.25 mmol), oxan-4-ylmethanesulfonyl chloride (50 mg, 0.25 mmol) and triethylamine (36 μL, 0.27 mmol) In dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 50:1→20:1) afforded compound (ZDR504) as a pale yellow oil (60 mg, 0.17 mmol, 68%). 1H NMR (400 MHz, CDCl3) δ 1.30-1.40 (2H, m), 1.76-1.82 (2H, m), 2.24-2.33 (1H, m), 2.33 (6H, s), 3.06 (2H, d, J=6.4 Hz), 3.34-3.38 (2H, m), 3.75 (2H, s), 3.86-3.90 (2H, m), 7.46-7.50 (1H, m), 7.52-7.56 (1H, m), 7.67 (1H, d, J=8.5 Hz), 7.82 (1H, dd, J=7.5 and 1.5 Hz), 8.15 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C18H25N3O3S: 363.2; found [M+H]+: 364.2.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (45 mg, 0.22 mmol), (6-chloropyridin-3-yl)methanesulfonyl chloride (50 mg, 0.22 mmol) and triethylamine (30 μL, 0.24 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR505) as a pale yellow oil (36 mg, 0.09 mmol, 40%). 1H NMR (400 MHz, CDCl3) δ 2.30 (6H, s), 3.65 (2H, s), 4.35 (2H, s), 7.17 (1H, d, J=8.0 Hz), 7.45-7.49 (1H, m), 7.54-7.57 (2H, m), 7.67 (1H, d, J=8.5 Hz), 7.82-7.85 (2H, m), 8.15 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C18H19ClN4O2S: 390.1; found [M+H]+: 391.1.
A similar procedure to that described for the preparation of compound (ZDR018) was followed using compound (ZDR059) (73 mg, 0.36 mmol), prop-2-yne-1-sulfonyl chloride (50 mg, 0.36 mmol) and triethylamine (51 μL, 0.39 mmol) in dichloromethane (4 mL). Purification by flash chromatography (dichloromethane/methanol, 20:1) afforded compound (ZDR506) as an orange oil (17 mg, 0.05 mmol, 13%). 1H NMR (400 MHz, d6-DMSO) δ 2.75 (1H, s), 3.17 (6H, s), 3.76 (2H, s), 4.64 (2H, s), 7.54-7.56 (1H, m), 7.65-7.74 (3H, m), 8.38 (1H, d, J=8.5 Hz); ESI-MS: m/z calcd for C15H17N3O2S: 303.1; found [M+H]+: 304.1.
Antibacterial susceptibility testing was performed in triplicate (biological) by measuring minimum inhibitory concentrations (MICs) by broth microdilution in 96-well flat bottom microtiter plates (ThermoFisher Scientific, New Zealand). S. uberis ATCC 19436, S. aureus ATCC 6538, or E. coli ATCC 10596 cells grown overnight were diluted to an OD600 of approximately 0.025, so that the final concentration of cells in the MIC assay was approximately 5×105 cfu/mL in media as follows: S. uberis; Todd Hewitt Broth (THB), S. aureus; Tryptic Soy Broth (TSB) and Cation Adjusted Muller Hinton Broth (CAMHB), and E. coli; Lysogeny Borth (LB) and CAMHB, before being dispensed into microtiter wells. As required additional sterile Zinc Sulphate (Heptahydrate) was supplemented into the media, so the final concentration was 50 μM. Test compounds were added to starting wells and two-fold serial dilutions were undertaken to generate a range of inhibitor concentrations at a final volume of 200 μl. Media and test compound-free (untreated) controls were included in each microtiter plate in triplicate. After 24 h incubation at 37° C. and 200 rpm, the OD600 of wells were read using a Varioskan Flash plate reader (ThermoFisher Scientific, New Zealand). The MIC was reported as the lowest concentration of the test compound for which no growth occurred, as determined by OD600 readings. The minimum bactericidal concentration (MBC) was determined using the Miles-Misra drop-plate method to measure the viability of cells in response to test compound challenge.
The MIC and MBC data are shown in Tables 1 and 2.
S.
uberis ATCC
S.
aureus ATCC
E.
coli ATCC
S.
uberis ATCC
S.
aureus ATCC
E.
coli ATCC
Although the invention has been described by way of example, it should be appreciated that variations and modifications may be made without departing from the scope of the invention as defined in the claims. Furthermore, where known equivalents exist to specific features, such equivalents are incorporated as if specifically referred in this specification.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/NZ2018/050182 | 12/20/2018 | WO | 00 |
| Number | Date | Country | |
|---|---|---|---|
| 62608141 | Dec 2017 | US |
