Patent Application
20240059676
The present invention relates to thyroid hormone receptor β selective agonists. More specifically, the present invention relates to a compound of formula (I) as a thyroid hormone receptor β subtype agonist, a pharmaceutical composition thereof, and use thereof in preparation of medicines for treating related diseases.
Thyroid hormone (TH) is produced by the thyroid gland and secreted into the circulatory system (hypothalamus/pituitary/thyroid system) in two different forms: 3,5,3′,5′-tetraiodo-L-thyronine (T4) and 3,5,3′-triiodo-L-thyronine (T3). Although T4 is the predominant form secreted by the thyroid, T3 is the more physiologically active form. T4 is converted to T3 by tissue-specific deiodinases, which are present in all tissues but mainly in the liver and kidney. The biological activity of thyroid hormones is mediated by thyroid hormone receptors (THRs). THRs are encoded by different gene expressions a and f3 located on human chromosomes 17 and 3, respectively, and different protein isoforms are genenrated through selective splicing of the primary transcripts, with each gene producing two isoforms, namely THRα1, THRα2, THRβ1, THRβ2. THRβ1 and THRβ2 result from differential expression in promoters, and the two isoforms differ only at the amino terminus. THRα1 and THRα2 result from differential splicing of pre-mRNA, differing mainly at the carboxyl terminus. Among them, THRα1, THRβ1 and THRβ2 can bind thyroid hormone. It has been shown that the thyroid hormone receptor isoforms can differ in their contribution to specific physiological responses. THRβ1 plays an important role in regulating the actions of thyrotropin and thyroid hormones in liver. THRβ2 plays a major role in the regulation of thyroid stimulating hormone. Thyroid hormones have the effect of lowering serum low-density lipoprotein (LDL). Hyperthyroidism is associated with low total serum cholesterol, because thyroid hormones promote hepatic LDL receptor expression and stimulate the metabolism of cholesterol to bile acids. Hypothyroidism is associated with hypercholesterolemia, and the thyroid hormone replacement therapy is known to lower total cholesterol. Thyroid hormones also reduce the risk of atherosclerosis and other cardiovascular diseases. The incidence of atherosclerotic vascular disease is directly related to the LDL cholesterol level. Thyroid hormones have beneficial effects in obese patients by reducing body weight and improving obesity-related co-morbidities by increasing metabolic rate, oxygen consumption and heat release, and may also have beneficial effects on glycemic control in obese patients with type 2 diabete.
The development of thyroid analogs that avoid the adverse effects of hyperthyroidism and hypothyroidism while maintaining the beneficial effects of thyroid hormones will open new avenues for the treatment of patients with metabolic diseases such as obesity, hyperlipidemia, hypercholesterolemia, diabetes; and other diseases and conditions such as hepatic steatosis and nonalcoholic steatohepatitis (NASH), atherosclerosis, cardiovascular diseases, hypothyroidism, thyroid cancer, thyroid diseases, and related conditions and diseases.
MGL-3196 is the first-in-class orally administered small molecule selective agonist of the hepatic thyroid hormone receptor beta subtype (THR-β). Preclinical toxicology and Phase 1 data indicated that, as a potential treatment for nonalcoholic steatohepatitis (NASH) and dyslipidemia, MGL-3196 could significantly reduce LDL cholesterol, triglycerides, and lipoproteins (Journal of Hepatology, 2018, vol. 68, S37-S64), making it an ideal drug candidate to lower cardiovascular risk in NASH patients anddyslipidemia patients on moderate statin doses or intolerant to statins (European Heart Journal, Volume 39, Issue suppl_1, August 2018, ehy566.P5387). Phase 2 clinical data showed that adverse events (AEs) were generally mild (85%) and moderate (15%), and 3 severe AEs occurred and were considered unrelated to the treatment (Journal of Hepatology, 2018, vol.68, S37-S64).
Although MGL-3196 as a THR-β agonist can effectively treat a variety of diseases, it is still a challenging work to find new compounds that have the beneficial effects of thyroid hormones without adverse effects and have good oral bioavailability and druggability. Therefore, there is still a need in the art to develop THR-β selective agonists with better specificity/ pharmacodynamic/ pharmacokinetic properties, and the present invention provides such compounds.
It is an object of the present invention to provide a compound of formula (I), its pharmaceutically acceptable salts, stereoisomers, enantiomers, diastereomers, atropisomers, racemates, polymorphs, solvates or isotopically labeled compounds (including deuterium substituted compounds).
It is another object of the present invention to provide a method for preparing the compound.
It is another object of the present invention to provide a pharmaceutical composition comprising the compound.
It is another object of the present invention to provide use of the compound in preparation of a medicine.
According to one aspect of the present invention, provided is a compound of formula (I), or a pharmaceutically acceptable salt, stereoisomer, enantiomer, diastereomer, atropisomer, racemate, polymorph, solvate or isotopically labeled compound thereof:
wherein
ring A is selected from the group consisting of
ring B is selected from the group consisting of
R0 is selected from the group consisting of hydrogen and C1-10 alkyl;
R1 is selected from the group consisting of hydrogen, substituted or unsubstituted C1-10 alkyl, substituted or unsubstituted C3-10 cycloalkyl, substituted or unsubstituted 3-10 membered heterocycloalkyl, substituted or unsubstituted C6-10 aryl and substituted or unsubstituted 5-10 membered heteroaryl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl, ═O, C1-6 alkoxy, C1-6 alkyl, C3-10 cycloalkyl, C6-10 aryl, halogenated C6-10 aryl, C1-10 alkyl C6-10 aryl, C1-10 alkoxy C6-10 aryl, 5-10 membered heteroaryl, C1-10 alkyl 5-10 membered heteroaryl, halogenated 5-10 membered heteroaryl, 3-10 membered heterocycloalkyl and —NR10R11;
R2, R3 and Y are each independently selected from the group consisting of hydrogen, halogen, substituted or unsubstituted C1-6 alkyl, substituted or unsubstituted C3-6 cycloalkyl, and substituted or unsubstituted C1-6 alkoxy, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl, C1-6 alkyl and C1-6 alkoxy;
R4 is selected from the group consisting of hydrogen, cyano, —NR10R11, substituted or unsubstituted C1-6 alkyl, substituted or unsubstituted C3-6 cycloalkyl and substituted or unsubstituted C2-8 alkynyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl, cyano and C1-6 alkoxy;
R5 is selected from the group consisting of hydrogen, substituted or unsubstituted C1-6 alkyl and substituted or unsubstituted C3-6 cycloalkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
R6 is selected from the group consisting of hydrogen and substituted or unsubstituted C1-6 alkyl, wherein the substituents for the “substituted” are selected from the group 10 consisting of halogen, hydroxyl and C1-6 alkoxy;
L is absent, or —NR10C(O)— or —NR10CR11R11—;
each R10 is independently selected from the group consisting of hydrogen and substituted or unsubstituted C1-3 alkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-3 alkoxy;
each R 11 is independently selected from the group consisting of hydrogen and substituted or unsubstituted C1-6 alkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
X1 and X2 are each independently selected from the group consisting of N and CR12, wherein R12 is selected from the group consisting of hydrogen, halogen, cyano, —NRbc, —C(═O)Ra, —C(═O)ORb, —C(═O)NRbRc, substituted or unsubstituted C1-4 alkyl, substituted or unsubstituted C3-6 cycloalkyl, substituted or unsubstituted C6-10 aryl and substituted or unsubstituted 5-10 membered heteroaryl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
X3 and X4 are each independently selected from the group consisting of N and CR13, wherein R13 is selected from the group consisting of hydrogen, halogen, cyano, hydroxyl, —ORa, —NRbRc, —C(═O)Ra, —C(═O)ORb, —C(═O)NRbRc, substituted or unsubstituted C1-4 alkyl and substituted or unsubstituted C3-6 cycloalkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
each Ra is independently C1-6 alkyl, C3-10 cycloalkyl or 3-10 membered heterocycloalkyl, wherein the alkyl, cycloalkyl and heterocycloalkyl are independently and optionally substituted by one or more substituents selected from the group consisting of halogen, hydroxyl, amino and C1-6 alkyl;
each Rb and Rc is independently hydrogen, C1-6 alkyl, C3-10 cycloalkyl or 3-10 membered heterocycloalkyl, wherein the alkyl, cycloalkyl and heterocycloalkyl are independently and optionally substituted by one or more substituents selected from the group consisting of halogen, hydroxyl, amino and C1-6 alkyl;
or Rb and Rc, together with the nitrogen atom to which they are connected, form a 3-10 membered heterocycloalkyl, wherein the heterocycloalkyl is optionally substituted by one or more substituents selected from the group consisting of halogen, hydroxyl, amino and C1-6 alkyl;
n is independently 1, 2 or 3 at each occurrence.
According to another aspect of the invention, provided is a method for preparing the compound of the present invention, wherein the method is one of the following schemes:
The compound of formula I-a is dissolved in a polar solvent, added with a base to react with the compound of formula I-b to obtain the compound of formula I-c. The base under the condition includes inorganic bases (sodium carbonate, potassium carbonate, cesium carbonate, lithium hydroxide, sodium hydroxide or potassium hydroxide, etc.) and organic bases (triethylamine, N,N-diisopropylethylamine or pyridine, etc.), and is preferably potassium carbonate. The polar solvent under the condition includes N,N-dimethylacetamide, N,N-dimethylformamide, dimethyl sulfoxide or acetonitrile, etc., and is preferably N,N-dimethylformamide.
The compound of formula I-c is reacted with a reducing agent to obtain the compound of formula I-d. The reducing agent under the condition includes iron powder, sulfide, stannous chloride or zinc powder etc., and is preferably stannous chloride.
The compound of formula I-d is reacted with a nitrite in an acidic acetonitrile solution, added with the compound of formula I-e to react further and cyclize at a high temperature to obtain the compound of formula I-S1. The acid under the condition is an organic acid, including carboxyl or sulfonic acid, etc., and is preferably acetic acid. The nitrite under the condition includes isoamyl nitrite or tert-butyl nitrite, etc., and is preferably tert-butyl nitrite, and ring A, Y, R2, R3 and R4 are as defined herein. Or
The compound of formula I-d is reacted with a nitrite under an acidic condition to 5 generate a diazonium salt, and added with a halide anion to obtain the compound of formula I-f; the obtained compound of formula I-f is coupled with the intermediate of formula I-g under the catalysis of a transition metal compound to obtain the compound of formula I-S1. The acid under the condition is an organic acid, including carboxyl or sulfonic acid, etc., and preferably acetic acid. The nitrite under the condition includes isoamyl nitrite or tert-butyl nitrite, etc., and is preferably tert-butyl nitrite, X is a halogen, and ring A, Y, R2, R3 and R4 are as defined herein. Or
The compound of formula II-a is added with a condensing agent under a basic condition, and subjected to a condensation reaction with the compound of formula I-d to form an amide bond to obtain the compound of formula H. The base under the condition includes organic bases such as triethylamine or N,N-diisopropylethylamine, and the condensing agent under the condition includes carbodiimide-type, phosphonium-type or urea-cation-type condensing agents, etc. Ring A, Y, R2 and R3 are as defined herein. or
The compound of formula I-d is reacted with the acyl chloride of formula II-b under a basic condition to form an amide bond to obtain the compound of formula H. The base under the condition includes organic bases such as triethylamine or N,N-diisopropylethylamine, and is preferably triethylamine. Ring A, Y, R2 and R3 are as defined herein. or
The compound of formula III-a is subjected to a substitution reaction with the compound of formula I-a under a basic condition to obtain the compound of formula III-b, which is then deprotected to remove the methyl ether on the oxygen according to conventional conditions, and subjected further to a substitution reaction with a halogenated hydrocarbon substituted by a Ri group under a basic condition to obtain the intermediate of formula III-d. The base under the condition includes inorganic bases such as potassium carbonate, cesium carbonate, and sodium hydroxide, and organic bases such as triethylamine or N,N-diisopropylethylamine, the reaction temperature is 50-150° C., and the reaction can be carried out under heating or microwave conditions. The organic solvent includes but not limited to dioxane, DMF, DMSO, tetrahydrofuran, NMP, etc. R1, R2, R3, X1, X2, X3 and X4 are as defined herein.
Then, according to the method of Scheme 1, III-d is reduced to obtain the key intermediate of formula III-e, which is then reacted with a nitrite, and further reacted with the compound of formula I-e and cyclized to obtain the compound of formula III-f.
According to another aspect of the present invention, provided is a pharmaceutical composition comprising a therapeutically effective amount of one or more selected from the group consisting of the above compound and the pharmaceutically acceptable salt, stereoisomer, enantiomer, diastereoisomer, atropisomer, racemate, polymorph, solvate and isotopically labeled compound (including deuterium substituted compound) thereof, and optionally a pharmaceutically acceptable excipient.
According to another aspect of the present invention, provided is use of the compound, or the pharmaceutically acceptable salt, stereoisomer, enantiomer, diastereoisomer, atropisomer, racemate, polymorph, solvate or isotopically labeled compound (including deuterium substituted compound) thereof, or the composition in preparation of a medicine for treatment of a metabolic-related disease.
According to another aspect of the present invention, provided is a method for treating a metabolic-related disease, comprising administering to a subject an effective amount of one or more selected from the group consisting of the above compound and the pharmaceutically acceptable salt, stereoisomer, enantiomer, diastereomer, atropisomer, racemate, polymorph, solvate and isotopically labeled compound (including deuterium substituted compound) thereof, or a pharmaceutical composition comprising one or more selected from the group consisting of the above compounds and the pharmaceutically acceptable salt, stereoisomer, enantiomer, diastereomer, atropisomer, racemate, polymorph, solvate and isotopically labeled compound (including deuterium substituted compound) thereof as an active ingredient.
The present disclosure effectively develops a THR-β selective agonist with better specificity and pharmacodynamics and pharmacokinetic properties, which shows the potential to treat various diseases.
In order to enable one skilled in the art to understand the characteristics and effects of the present invention, the terms and words mentioned in the description and claims are generally described and defined below. Unless otherwise specified, all technical and scientific terms used herein have the usual meanings understood by those skilled in the art for the present invention. In case of conflict, the definitions in this specification shall prevail.
As used herein, the terms “comprises”, “includes”, “has”, “contains” or any other similar terms are open-ended transitional phrases intended to cover non-exclusive inclusions. For example, a composition or article containing a plurality of elements is not limited to only those elements listed herein, but may also include other elements not specifically listed but which are generally inherent in the composition or article. Otherwise, unless expressly stated to the contrary, the word “or” means an inclusive “or” and not an exclusive “or”. For example, the condition “A or B” is satisfied by any of the following: A is true (or exists) and B is false (or does not exist), A is false (or does not exist) and B is true (or exists), both A and B are true (or exist). In addition, the interpretation of the terms “comprises”, “includes”, “has”, “contains” herein should be deemed to have been specifically disclosed and also cover closed or semi-closed transitional phrases such as “consists of” and “essentially consists of”.
Herein, all features or conditions defined in the form of numerical ranges or percentage ranges are for the sake of brevity and convenience only. Accordingly, the description of numerical ranges or percentage ranges should be considered to encompass and specifically disclose all possible subranges and individual numerical values, especially integer values, within such ranges. For example, a range of “1 to 8” should be deemed to have specifically disclosed all subranges such as 1 to 7, 2 to 8, 2 to 6, 3 to 6, 4 to 8, 3 to 8, etc., specifically subranges defined by all integer values, and should be deemed to have specifically disclosed individual values such as 1, 2, 3, 4, 5, 6, 7, 8 etc. within the specifically disclosed ranges. Unless otherwise indicated, the foregoing method of interpretation is applicable to all content throughout the present invention, whether broad or not.
Where a quantity or other value or parameter is expressed in the form of a range, a preferred range, or a series of upper and lower limits, it is to be understood that all ranges consisting of any upper or preferred value of that range and lower limit or preferred value of that range have been specifically disclosed, whether or not those ranges are separately disclosed. Further, whenever a numerical range is referred to herein, unless otherwise indicated, such range shall include its endpoints and all integers and fractions within the range.
Herein, under the premise that the object of the invention can be achieved, the numerical value should be understood as having the precision of the effective digit of the numerical value. For example, the number 40.0 should be understood to cover the range from 39.50 to 40.49.
Herein, for the condition of using Markush group or optional terms to describe the features or examples of the present invention, one skilled in the art should understand that the subgroups of all elements or any individual elements in the Markush group or option list may also be used to describe the invention. For example, if X is described as “selected from the group consisting of X1, X2 and X3”, it also means that claim of X being X1 and claim of X being X1 and/or X2 has been fully described. Furthermore, for the condition of using Markush group or optional terms to describe the features or examples of the present invention, one skilled in the art should understand that any combinations of the subgroups of all elements or any individual elements in the Markush group or option list may also be used to describe the invention. Accordingly, for example, if X is described as “selected from the group consisting of X1, X2 and X3”, and Y is described as “selected from the group consisting of Y1, Y2 and Y3”, it also means that claim of X being X1 or X2 or X3 and Y being Y1 or Y2 or Y3 has been fully described.
The following detailed embodiments are merely exemplary in nature and not intended to limit the invention and its uses. Furthermore, the present disclosure is not bound by any theory presented in the above prior art or summary, or the following detailed embodiments or examples.
According to one embodiment of the present invention, provided is a compound represented by formula (I), or a pharmaceutically acceptable salt, stereoisomer, enantiomer, diastereomer, atropisomer, racemate, polymorph, solvate or isotopically labeled compound thereof:
ring B is selected from the group consisting of
R0 is selected from the group consisting of hydrogen, and C1-10 alkyl;
R1 is selected from the group consisting of hydrogen, substituted or unsubstituted C1-10 alkyl, substituted or unsubstituted C3-10 cycloalkyl, substituted or unsubstituted 3-10 membered heterocycloalkyl, substituted or unsubstituted C6-10 aryl and substituted or unsubstituted 5-10 membered heteroaryl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl, ═O, C1-6 alkoxy, C1-6 alkyl, C3-10 cycloalkyl, C6-10 aryl, halogenated C6-10 aryl, C1-10 alkyl C6-10 aryl, C1-10 alkoxy C6-10 aryl, 5-10 membered heteroaryl, C1-10 alkyl 5-10 membered heteroaryl, halogenated 5-10 membered heteroaryl, 3-10 membered heterocycloalkyl and -NR1° R11 ;
R2, R3 and Y are each independently selected from the group consisting of hydrogen, halogen, substituted or unsubstituted C1-6 alkyl, substituted or unsubstituted C3-6 cycloalkyl, substituted or unsubstituted C1-6 alkoxy, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl, C1-6 alkyl and C1-6 alkoxy;
R4 is selected from the group consisting of hydrogen, cyano, —NR10R11, substituted or unsubstituted C1-6 alkyl, substituted or unsubstituted C3-6 cycloalkyl and substituted or unsubstituted C2-8 alkynyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl, cyano and C1-6 alkoxy;
R5 is selected from the group consisting of hydrogen, substituted or unsubstituted C1-6 alkyl and substituted or unsubstituted C3-6 cycloalkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
R6 is selected from the group consisting of hydrogen and substituted or unsubstituted C1-6 alkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
L is absent, or —NR10C(O)— or —NR10CR11R11—;
each R10 is independently selected from the group consisting of hydrogen and substituted or unsubstituted C1-3 alkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-3 alkoxy;
each R11 is independently selected from the group consisting of hydrogen and substituted or unsubstituted C1-6 alkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
X1 and X2 are each independently selected from the group consisting of N and CR12, wherein R12 is selected from the group consisting of hydrogen, halogen, cyano, —NRbRc, —C(═O)Ra, —C(═O))ORb, —C(═O)NRbRc, substituted or unsubstituted C1-4 alkyl, substituted or unsubstituted C3-6 cycloalkyl, substituted or unsubstituted C6-10 aryl and substituted or unsubstituted 5-10 membered heteroaryl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
X3 and X4 are each independently selected from the group consisting of N and CR13, wherein R13 is selected from the group consisting of hydrogen, halogen, cyano, hydroxyl, —ORa, —NRbRc, —C(═O)Ra, —C(═O)0Rb, —C(═O)NRb Rc, substituted or unsubstituted C1-4 alkyl and substituted or unsubstituted C3-6 cycloalkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
each Ra is independently C1-6 alkyl, C3-10 cycloalkyl or 3-10 membered heterocycloalkyl, wherein the alkyl, cycloalkyl and heterocycloalkyl are independently and optionally substituted by one or more substituents selected from the group consisting of halogen, hydroxyl, amino and C1-6 alkyl;
each Rb and Rc is independently hydrogen, C1-6 alkyl, C3-10 cycloalkyl or 3-10 membered heterocycloalkyl, wherein the alkyl, cycloalkyl and heterocycloalkyl are independently and optionally substituted by one or more substituents selected from the group consisting of halogen, hydroxyl, amino and C1-6 alkyl;
or Rb and Rc, together with the nitrogen atom to which they are connected, form a 3-10 membered heterocycloalkyl, wherein the heterocycloalkyl is optionally substituted by one or more substituents selected from the group consisting of halogen, hydroxyl, amino and C1-6 alkyl;
n is independently 1, 2 or 3 at each occurrence.
According to one embodiment of the present disclosure, the compound of formula (I) is selected from the group consisting of the compounds represented by formula (Ia) or (Ib):
wherein
R0 is hydrogen;
R1 is selected from the group consisting of hydrogen, substituted or unsubstituted C1-6 alkyl, substituted or unsubstituted C3-6 cycloalkyl and substituted or unsubstituted C3-8 heterocycloalkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, a hydroxyl, =0, and C1-6 alkoxy;
R2 and R3 are each independently selected from the group consisting of halogen, substituted or unsubstituted C1-6 alkyl and substituted or unsubstituted C3-6 cycloalkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl, C1-4 alkyl and C14 alkoxy;
n is independently 1 or 2 at each occurrence;
X1 and X2 are each independently selected from the group consisting of N and CR12, wherein R12 is selected from the group consisting of hydrogen, halogen, cyano, substituted or unsubstituted C1-4 alkyl, substituted or unsubstituted C3-6 cycloalkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
X3 and X4 are each independently selected from the group consisting of N and CR13, wherein R13 is selected from the group consisting of hydrogen, substituted or unsubstituted C1-4 alkyl and substituted or unsubstituted C3-6 cycloalkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
R5 and B ring are as defined above.
According to one embodiment of the present disclosure, the compound of formula (I) is selected from the group consisting of the compounds represented by formula (Ic):
wherein
R2 and R3 are each independently selected from the group consisting of halogen, substituted or unsubstituted C1-6 alkyl and substituted or unsubstituted C3-6 cycloalkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl, C1-4 alkyl and Ci4 alkoxy;
X1 and X2 are each independently selected from the group consisting of N and CR12, wherein R12 is selected from the group consisting of hydrogen, halogen, cyano, substituted or unsubstituted C1-4 alkyl, substituted or unsubstituted C3-6 cycloalkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
X3 and X4 are each independently selected from the group consisting of N and CR13, wherein R13 is selected from the group consisting of hydrogen, substituted or unsubstituted C1-4 alkyl and substituted or unsubstituted C3-6 cycloalkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
R1 and B ring are as defined above.
According to one embodiment of the present disclosure, the compound of formula (I) is selected from the group consisting of the compounds represented by formula (Id):
wherein
R2 and R3 are each independently selected from the group consisting of halogen;
L is —NHC(O)— or —NHCHR11—; wherein R11 is selected from the group consisting of hydrogen and substituted or unsubstituted C1-6 alkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
X1 and X2 are each independently selected from the group consisting of N and CR12, wherein R12 is selected from the group consisting of hydrogen, halogen, cyano, substituted or unsubstituted Ci4 alkyl, substituted or unsubstituted C3-6 cycloalkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
R1 is as defined above.
According to one embodiment of the present disclosure, the compound of formula (I) is selected from the group consisting of the compounds represented by formula (Ie):
wherein
R2 and R3 are each independently selected from the group consisting of halogen;
X1 and X2 are each independently selected from the group consisting of N and CR12, wherein R12 is selected from the group consisting of hydrogen, halogen, cyano, substituted or unsubstituted C1-4 alkyl, substituted or unsubstituted C3-6 cycloalkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
R1 and R4 are as defined above.
According to one embodiment of the present disclosure, the compound of formula (I) is selected from the group consisting of the compounds represented by formula (If):
wherein
R2 and R3 are each independently selected from the group consisting of halogen;
X1 and X2 are each independently selected from the group consisting of N and CR12, wherein R12 is selected from the group consisting of hydrogen, halogen, cyano, substituted or unsubstituted C1-4 alkyl, substituted or unsubstituted C3-6 cycloalkyl, wherein the substituents for the “substituted” are selected from the group consisting of halogen, hydroxyl and C1-6 alkoxy;
R1 and R6 are as defined above.
In the present invention, the heteroatom in the heterocycloalkyl and the heteroaryl is one or more selected from the group consisting of O, N and S, and the sulfur atom is optionally oxidized to form a sulfoxide group and a sulfone group.
According to one embodiment of the present disclosure, the compound of formula I is selected from the group consisting of:
According to one embodiment of the present disclosure, provided is a pharmaceutical composition, comprising one or more selected from the group consisting of the above compound, and the pharmaceutically acceptable salt, stereoisomer, enantiomer, diastereoisomer, atropisomer, racemate, polymorph, solvate and isotopically labeled compound thereof, and optionally a pharmaceutically acceptable excipient.
According to one embodiment of the present disclosure, provided is use of the above compound, or the pharmaceutically acceptable salt, stereoisomer, enantiomer, diastereoisomer, atropisomer, racemate, polymorph, solvate or isotopically labeled compound thereof, or the above composition in preparation of a medicine for treatment of a metabolic-related disease.
According to one embodiment of the present disclosure, provided is a method for treating a metabolic-related disease, comprising administering to a subject an effective amount of one or more selected from the group consisting of the above compound, and the pharmaceutically acceptable salt, stereoisomer, enantiomer, diastereomer, atropisomer, racemate, polymorph, solvate or isotopically labeled compound thereof, or the above pharmaceutical composition.
According to one embodiment of the present disclosure, the metabolic-related disease is selected from the group consisting of obesity, hyperlipidemia, hypercholesterolemia, diabetes, and non-alcoholic steatohepatitis (NASH), hepatic steatosis, atherosclerosis, thyroid function hypothyroidism and thyroid cancer.
According to an embodiment of the present disclosure, the metabolic-related disease is selected from the group consisting of: non-alcoholic steatohepatitis (NASH), hypothyroidism and thyroid cancer.
In the following examples, the optimal reaction conditions and reaction time for each individual step can be changed according to the specific reactants used and the substituents present in all reactants. Unless otherwise specified, the solvent, temperature, and other reaction conditions can be easily selected by those skilled in the art. The specific steps are provided in the section of synthetic examples. The reaction can be further processed in a conventional manner, for example, by removing the solvent from the residue and further purifying according to methods generally known in the art such as, but not limited to, crystallization, distillation, extraction, grinding, and chromatography. Unless otherwise specified, starting materials and reactants are commercially available or can be prepared by those skilled in the art from commercially available materials using methods described in chemical literature.
Routine tests, including proper adjustment of the reaction conditions, the reactants and sequence of the synthetic route, the protection of any chemical functional group which may not be compatible with the reaction conditions, and the deprotection at an appropriate point in the reaction sequence of the method, are all included within the scope of the invention. Appropriate protecting groups and methods for protecting and deprotecting different substituents using such appropriate protecting groups are well known to those skilled in the art; examples of which are found in T. Greene and P. Wuts, Protecting Groups in Chemical Synthesis (third edition), John Wiley & Sons, NY (1999), which is incorporated herein by reference in its entirety. The synthesis of the compounds of the present invention can be achieved by methods similar to those described in the synthetic schemes described above and in the specific examples.
If the starting material is not commercially available, it can be prepared by steps selected from the group consisting of standard organic chemistry techniques, techniques similar to the synthesis of known structural analogs, or techniques similar to the steps described in the above scheme or synthesis example section. When an optically active form of the compounds of the present invention are required, they can be obtained by performing one of the steps described herein using optically active starting materials (for example, prepared by asymmetric induction of an appropriate reaction step), or can be obtained by resolving the mixture of stereoisomers of compounds or intermediates by using standard procedures (for example, chromatographic separation, recrystallization or enzymatic resolution).
Similarly, when pure geometric isomers of the compounds of the present invention are required, they can be obtained by performing one of the steps described above using pure geometric isomers as starting materials, or can be obtained by resolving the mixture of geometric isomers of compounds or intermediates by using standard procedures, such as chromatographic separation.
The following examples are for illustrative purposes, and they are only used to explain the technical solutions of the present invention, and it is not intended to limit the present invention to these examples.
The First Step: Preparation of 1b
To a solution of 5-methoxy-1H-indole (1a, 1.47 g, 10 mmol) in N,N-dimethylformamide (20 mL), 1,3-dichloro-2-fluoro-5-nitrobenzene (2.5 g, 12 mmol), potassium carbonate (2 g, 15 mmol) were added sequencely. After the addition, the reaction solution was raised to 100° C. and stirred overnight. The reaction was stopped, and the reaction solution was cooled to room temperature naturally, added with saturated saline (100 mL), and extracted three times with ethyl acetate. The organic phases were combined, washed with saturated brine, and concentrated to dryness under reduced pressure to obtain 1b (3 g), which was directly used in the next reaction. LC-MS [M+H]+: 338.
The Second Step: Preparation of 1c
To a solution of 1b (1 g, 2.98 mmol) in ethanol (20 mL), stannous chloride dihydrate (3.4 g, 14.9 mmol) was added. After the addition, the reaction solution was raised to 80° C. and stirred for 6 hours. After the reaction was stopped, the reaction solution was cooled to room temperature naturally, concentrated to dryness under a reduced pressure, and added with ethyl acetate (200 mL) to dissolve. The organic phase was washed with an aqueous sodium hydroxide solution (2M) three times, concentrated, and then subjected to column chromatography to obtain 1c (750 mg). 1H NMR (400 MHz, CDCl3) δ 7.16 (s, 1H), 7.05 (d, J=3.2 Hz, 1H), 6.90-6.82 (m, 2H), 6.74 (s, 2H), 6.62 (d, J=3.2 Hz, 1H), 3.96 (s, 214), 3.87 (s, 3H); LC-MS [M+H]+: 307.
The Third Step: Preparation of ZB-H-01
Tert-butyl nitrite (202 mg, 1.9 mmol) was dissolved in acetic acid (3 ml). This solution was slowly added to a solution of 1c (500 mg, 1.63 mmol) in acetic acid (20 ml) and acetonitrile (10 mL) at 0° C., kept at 0° C. and stirred for 30 minutes, added dropwise with an acetonitrile solution of N-cyanoacetylurethane (1d, 330 mg, 2.1 mmol), and stirred for 3 hours after the dropwise addition. After the reaction was stopped, the reaction solution was added to a saturated aqueous sodium bicarbonate solution (150 ml), and a red solid was filtered out, washed with water and petroleum ether, and dried. N,N-dimethylacetamide (5 ml) and potassium acetate (1.9 mmol) were added to the obtained solid, heated to 120° C. and stirred for 6 hours, cooled to room temperature, added with 50 ml of water, and extracted with ethyl acetate three times. The organic phases were combined, washed with saturated brine, concentrated to dryness under reduced pressure, separated and purified by column chromatography to obtain ZB-H-01 (520 mg). LC-MS [M+H]+: 428.
The Fourth Step: Preparation of ZB-H-02
bZB-H-01 (30 mg) was dissolved in 20 mL of DCM and purged with argon three times, slowly added with a solution (2M, 0.7 mL) of boron tribromide in dichloromethane at −78° C., and then gradually raised to −10° C. After TLC monitoring showed the raw material point disappearred, 10 mL of a saturated sodium bicarbonate aqueous solution was added, stirred and warmed to room temperature. The reaction solution was allowed to stand for phase separation. The dichloromethane layer was separated, and extracted three times with ethyl acetate. The organic phases were combined, dried, concentrated to dryness under reduced pressure, separated and purified by thin layer chromatography (DCM:MeOH =8:1) to obtain ZB-H-02 (18 mg). 1NMR (400 MHz, DMSO-d6) δ 8.89 (s, 1H), 7.89 (s, 2H), 7.36 (d, J=3.2 Hz, 1H), 6.96 (s, 114), 6.75 (d, J=8.7 Hz, 1H), 6.65 (d, J=8.7 Hz, 1H), 6.55 (d, J=3.2 Hz, 1H); LC-MS [M+H]+: 414.
The target product ZB-H-07 was finally prepared by using the synthetic route of Example 1, wherein the raw material 1a in the first step was replaced by 2a, and the remaining steps and conditions were carried out as described in Example 1. 1NMR (400 MHz, DMSO-d6) δ 9.41 (s, 1H), 8.25 (s, 1H), 7.92 (s, 2H), 7.20-7.05 (m, 2H), 7.03-6.93 (m, 1H); LC-MS [M+H]+: 415.
The target product ZB-H-08 was finally prepared by using the synthetic route of Example 1, wherein the raw material 1a in the first step was replaced by 3a, and the remaining steps and conditions were carried out as described in Example 1. 1H NMR (400 MHz, DMSO-d6) δ 13.30 (s, 1H), 9.30 (s, 1H), 7.79 (s, 2H), 7.45 (d, J=8.6 Hz, 1H), 6.72 (s, 1H), 6.61 (d, J=7.3 Hz, 1H), 4.26 (t, J=8.4 Hz, 2H), 3.18 (t, J=8.4 Hz, 2H); LC-MS [M+H]+: 416.
The target product ZB-H-09 was finally prepared by using the synthetic route of Example 1, wherein the raw material 1a in the first step was replaced by 4a, and the remaining steps and conditions were carried out as described in Example 1. 1NMR (400 MHz, DMSO-d6) δ 8.92 (s, 114), 7.89 (s, 2H), 7.27 (d, J=3.2 Hz, 1H), 6.98 (s, 1H), 6.61 (s, 1H), 6.51 (d, J=3.2 Hz, 1H), 3.26-3.21 (m, 1H), 1.12 (d, J=6.9 Hz, 6H); LC-MS [M+H]+: 456.
The target product ZB-H-11 was finally prepared by using the synthetic route of Example 1, wherein the raw material 1a in the first step was replaced by 5a, and the remaining steps and conditions were carried out as described in Example 1. 1H NMR (400 MHz, DMSO-d6) δ 8.56 (s, 1H), 7.98 (s, 2H), 7.63 (d, J=8.7 Hz, 1H), 6.87 (d, J=8.7 Hz, 1H), 6.50 (s, 1H); LC-MS [M+H]+: 415.
The target product ZB-H-15 was finally prepared by using the synthetic route of Example 1, wherein the raw material 1a in the first step was replaced by 6a, and the remaining steps and conditions were carried out as described in Example 1H NMR (400 MHz, DMSO-d6) δ 13.34 (s, 1H), 8.89 (s, 1H), 7.87 (s, 2H), 7.27 (d, J=3.2 Hz, 1H), 6.98 (s, 1H), 6.65 (s, 1H), 6.52 (d, J=3.1 Hz, 1H), 2.15 (s, 3H); LC-MS [M+H]+: 428.
The target product ZB-H-16 was finally prepared by using the synthetic route of Example 1, wherein the raw material 1a in the first step was replaced by 7a, and the remaining steps and conditions were carried out as described in Example 1H NMR (400 MHz, DMSO-d6) δ 9.44 (s, 1H), 8.18 (s, 1H), 7.92 (s, 2H), 7.11 (s, 1H), 6.98 (s, 1H), 2.21 (s, 3H); LC-MS [M+H]+: 429.
The target product ZB-H-17 was finally prepared by using the synthetic route of Example 1, wherein the raw material 1a in the first step was replaced by 8a, and the remaining steps and conditions were carried out as described in Example 1H NMR (400 MHz, DMSO-d6) δ 13.28 (s, 1H), 8.66 (s, 1H), 7.36 (d, J=3.3 Hz, 1H), 6.71 (d, J=8.6 Hz, 1H), 6.63 (d, J=3.3 Hz, 1H), 6.58 (d, J=8.6 Hz, 1H), 2.32 (s, 3H); LC-MS: [M+H]+: 428.
The target product ZB-H-18 was finally prepared by using the synthetic route of Example 1, wherein the raw material 1a in the first step was replaced by 9a, and the remaining steps and conditions were carried out as described in Example 1. 1H NMR (400 MHz, DMSO-d6) δ 13.37 (s, 1H), 9.12 (s, 1H), 8.36 (s, 1H), 7.92 (s, 2H), 7.02 (d, J=8.8 Hz, 1H), 6.91 (d, J=8.8 Hz, 1H), 2.40 (s, 3H); LC-MS [M+H]+: 429.
The target product ZB-H-19 was finally prepared by using the synthetic route of Example 1, wherein the raw material 1a in the first step was replaced by 10a, and the remaining steps and conditions were carried out as described in Example 1. 1 11 NMR (400 MHz, DMSO-d6) δ 8.92 (s, 1H), 7.86 (s, 2H), 7.14 (s, 1H), 6.88 (s, 1H), 6.71 (d, J=8.7 Hz, 1H), 6.65 (d, J=8.7 Hz, 1H), 2.24 (s, 3H); LC-MS [M+H]+: 428.
The target product ZB-H-22 and ZB-H-23 was finally prepared by using the synthetic route of Example 1, wherein the raw material 1a in the first step was replaced by 11a, and the remaining steps and conditions were carried out as described in Example 1.
ZB-H-22: 1H NMR (400 MHz, DMSO-d6) δ 11.71 (s, 1H), 7.89 (s, 2H), 7.41 (d, J=3.1 Hz, 1H), 7.30 (d, J=9.5 Hz, 1H), 6.28 (d, J=3.0 Hz, 1H), 6.06 (d, J=9.4 Hz, 1H); LC-MS [M+H]+: 415.
ZB-H-23: LC-MS [M+H]+: 429.
The target product ZB-H-24 was finally prepared by using the synthetic route of Example 1, wherein the raw material 1a in the first step was replaced by 12a, and the remaining steps and conditions were carried out as described in Example 1. 1H NMR (400 MHz, DMSO-d6) δ 8.90 (s, 1H), 7.86 (s, 2H), 7.11 (s, 1H), 6.96 (d, J=2.1 Hz, 1H), 6.71 (d, J=8.7 Hz, 1H), 6.63 (d, J=8.7 Hz, 1H), 3.15-3.02 (m, 1H), 1.31 (d, J=6.8 Hz, 6H); LC-MS [M+H]+: 456.
The target product ZB-H-31 was finally prepared by using the synthetic route of Example 1, wherein the raw material 1a in the first step was replaced by 13a, and the remaining steps and conditions were carried out as described in Example 1. 1H NMR (400 MHz, DMSO-d6) δ 13.35 (s, 1H), 9.38 (s, 1H), 7.86 (s, 2H), 7.81 (s, 1H), 7.58 (d, J=3.6 Hz, 1H), 7.41 (s, 1H), 6.61 (d, J=3.6 Hz, 1H); LC-MS: [M+H]+: 415.
The First Step: Preparation of Intermediate 14b
The intermediate 14b was prepared by using the synthetic route of the first step of Example 1, except that the raw material 1a was replaced by 11a. LC-MS [M+H]+: 339.
The Second Step: Preparation of Intermediate 14c
14b (337 mg, 1 mmol) was dissolved in anhydrous acetonitrile (10 mL), stirred under the protection of argon, added with sodium iodide (750 mg, 5 mmol) and trimethylchlorosilane (0.6 mL, 5 mmol) respectively, and refluxed. After TLC monitoring showed the raw material point disappeared, the reaction solution was cooled to room temperature, continued stirring and quenched with methanol (5 mL), concentrated to dryness under reduced pressure, and separated and purified by column chromatography to obtain 14c (249 mg). 1H NMR (400 MHz, DMSO-d6) δ 11.70 (s, 1H), 8.61 (s, 2H), 7.40 (d, J=3.2 Hz, 1H), 7.29 (d, J=9.5 Hz, 1H), 6.32 (d, J=3.1 Hz, 1H), 6.09 (d, J=9.5 Hz, 1H); LC-MS [M+H]+: 325.
The Third Step: Preparation of Intermediate 14d
14c (323 mg, 1 mmol) was dissolved in 1,4-dioxane (5 mL) and put into a microwave reaction tube, added with methyl iodide (3 mmol) and cesium carbonate (3 mmol) respectively, and microwaved (150° C., 12 hours). After the reaction was finished, the reaction solution was concentrated to dryness under reduced pressure, and purified by column chromatography to obtain 14d (288 mg). LC-MS: [M+H]+: 338.
The Fourth Step: Preparation of 14e
To a solution of 14d (1 g, 2.98 mmol) in ethanol (20 mL), stannous chloride dihydrate (3.4 g, 14.9 mmol) was added. After the addition, the reaction solution was raised to 80° C. and stirred for 6 hours. After the reaction was stopped, the reaction solution was cooled to
room temperature naturally, concentrated to dryness under reduced pressure, added with ethyl acetate (200 mL) to dissolve. The organic phase was washed with sodium hydroxide aqueous solution (2M) three times, concentrated, and subjected to column chromatography to obtain 14e. LC-MS [M+H]+: 308.
15e was prepared by using the synthetic route of Example 14, except that the raw material iodomethane in the third step was replaced by iodoisopropane. LC-MS: [M+H]+: 336.
Step 1: To a solution of ethyl cyanoformate (16a, 9 g, 106 mmol) in ethanol (100 mL) and water (80 ml), hydroxylamine hydrochloride (11 g, 159 mmol) and sodium carbonate (11 g, 106 mmol) were added. The mixture was stirred at room temperature for 2 hours. The organic solvent was removed in vacuum, and the aqueous layer was extracted with dichloromethane (8×100 mL). The combined organic layers were dried over MgSO4, filtered and concentrated to obtain 16b (5.7 g) as a white solid. LC-MS [M+H]+: 133.
The second step: N,N′ -carbonyldiimidazole (9.4 g, 58 mmol) and 1,8-diazabicycloundec-7-ene (8.7 g, 58 mmol) were added to a solution of 16b (5.7 g, 48 mmol) in 1,4-dioxane (50 mL) and stirred at 80° C. for 2 hours. The reaction solution was quenched with HCl, concentrated and extracted with dichloromethane (8×100 mL). The combined organic layers were concentrated and purified by column chromatography (DCM:EA=8:1) to give 16c (3 g) as a yellow oil. 1H NMR (400 MHz, DMSO-d6) δ 13.41 (s, 1H), 4.37 (q, J=7.1 Hz, 2H), 1.30 (t, J=7.1 Hz, 3H); LC-MS [M−H]−: 157.
The third step: Lithium hydroxide (0.5 g, 20.8 mmol) was added to a mixed solution of 16c (3 g, 20.8 mmol) in tetrahydrofuran (30 mL) and water (30 mL), and stirred at room temperature for 3 hours. The mixture was washed with ethyl acetate (2×20 mL), acidified to pH=3 with 1M HCl, concentrated, and extracted with ethyl acetate (8×20 mL). The organic phase was dried, and concentrated to dryness under reduced pressure to obtain 16d (2 g) as a white solid. LC-MS [M−H]−: 129.
Step 4: 16d (2 g, 15.4 mmol) was dissolved in anhydrous tetrahydrofuran, added with a drop of N,N-dimethylformamide, stirred at 0° C., added dropwise with oxalyl chloride (1.3 mL, 15.4 mmol), warmed to room temperature, kept stirring for 30 minutes, and concentrated to dryness under reduced pressure to obtain 16e (1.8 g).
The target ZB-H-25 was prepared by using the synthetic route of the third step in Example 1, except that 1c in the third step was replaced by 14e. 1H NMR (400 MHz, DMSO-d6) δ 7.90 (s, 2H), 7.51 (d, J=3.2 Hz, 1H), 7.32 (d, J=9.4 Hz, 1H), 6.61 (d, J=3.0 Hz, 1H), 6.15 (d, J=9.4 Hz, 1H), 3.55 (s, 3H); LC-MS: [M+H]+: 429.
The target ZB-H-26 was prepared by using the synthetic route of the third step in Example 1, except that 1c in the third step was replaced by 15e. 1H NMR (400 MHz, DMSO-d6) δ 13.35 (s, 1H), 7.89 (s, 2H), 7.50 (d, J=3.2 Hz, 1H), 7.27 (d, J=9.4 Hz, 1H), 6.76 (d, J=3.2 Hz, 1H), 6.12 (d, J=9.4 Hz, 1H), 5.47-5.06 (m, 1H), 1.51 (d, J=7.0 Hz, 6H); LC-MS [M+H]+: 458.
15e (63 mg, 0.19 mmol) was dissolved in anhydrous tetrahydrofuran (2 mL), added with triethylamine (0.6 mL, 0.9 mmol), stirred and cooled to 0° C., added dropwise with a solution of the intermediate 16e (125 mg, 0.9 mmol) in anhydrous tetrahydrofuran (2 mL), warmed to room temperature, stirred for 30 minutes, concentrated to dryness under reduced pressure, separated and purified by column chromatography to obtain ZB-H-32 (48 mg). 1H NMR (400 MHz, DMSO-d6) δ 13.49 (s, 1H), 11.52 (s, 1H), 8.12 (s, 2H), 7.41 (d, J=3.2 Hz, 1H), 7.17 (d, J=9.3 Hz, 1H), 6.70 (d, J=3.3 Hz, 1H), 6.10 (d, J=9.4 Hz, 1H), 5.40-5.17 (m, 1H), 1.50 (d, J=7.0 Hz, 6H); LC-MS [M+H]+: 449.
The First Step: Preparation of 20d
14c (323 mg, 1 mmol) was dissolved in toluene (5 mL) and put into a microwave reaction tube, added with cyclopropylboronic acid (3 mmol), copper acetate (1 mmol), pyridine (5 mmol) and sodium bis(trimethylsilyl)amide (1 mmol) respectively, blown in oxygen, and microwaved (120° C., 3 hours). After the reaction was completed, the reaction solution was concentrated to dryness under reduced pressure, and purified by column chromatography to obtain 20d (300 mg).
The Second Step: Preparation of 20e
20e was prepared by using the synthetic route of the second step in Example 1, except that the raw material lb was replaced by 20d. LC-MS [M+H]+: 334.
21e was prepared by using the synthetic route of Example 14, except that the raw material iodomethane in the third step was replaced by iodocyclohexane. LC-MS [M+H]+: 376.
22e was prepared by using the synthetic route of Example 14, except that the raw material iodomethane in the third step was replaced by 4-bromotetrahydropyran. LC-MS [M+H]+: 378.
23e was prepared by using the synthetic route of Example 14, except that the raw material iodomethane in the third step was replaced by 4-bromotetrahydrothiopyran. LC-MS [M+H]+: 394.
24e was prepared by using the synthetic route of Example 14, except that the raw material iodomethane in the third step was replaced by 4-bromotetrahydro-21-1-thiopyran-1,1-dioxide. LC-MS: [M+H]+: 426.
25e was prepared by using the synthetic route of Example 14, except that the raw material iodomethane in the third step was replaced by tert-butyl 4-iodopiperidine-1-carboxylate. LC-MS [M+H]+: 477.
26e was prepared by using the synthetic route of Example 14, except that the raw material iodomethane in the third step was replaced by iodocyclopentane. LC-MS [M+H]+: 362.
27e was prepared by using the synthetic route of Example 14, except that the raw material iodomethane in the third step was replaced by iodocyclobutane. LC-MS [M+H]+: 348.
The target ZB-H-33 was prepared by using the synthetic route of the third step in Example 1, except that the raw material 1c in the third step was replaced by 20e. 1H NMR (400 MHz, DMSO-d6) δ 13.35 (s, 1H), 7.89 (s, 2H), 7.48 (d, J=3.2 Hz, 1H), 7.29 (d, J=9.5 Hz, 1H), 6.61 (d, J=3.2 Hz, 1H), 6.08 (d, J=9.5 Hz, 1H), 3.05 (tt, J=7.2, 4.1 Hz, 1H), 1.21-1.11 (m, 2H), 0.91-0.82 (m, 2H); LC-MS [M+H]+: 456.
The target ZB-H-34 was prepared by using the synthetic route of the Example 19, except that 15e was replaced by 20e. 1H NMR (400 MHz, DMSO-d6) δ 13.57 (s, 1H), 11.51 (s, 1H), 8.12 (s, 2H), 7.39 (d, J=3.1 Hz, 1H), 7.19 (d, J=9.5 Hz, 1H), 6.56 (d, J=3.1 Hz, 1H), 6.07 (d, J=9.4 Hz, 1H), 3.03 (tt, J=7.1, 4.0 Hz, 1H), 1.21-1.12 (m, 2H), 0.91-0.83 (m, 2H); LC-MS [M+H]+: 447.
The target ZB-H-38 was prepared by using the synthetic route of the third step in Example 1, except that the raw material 1c in the third step was replaced by 21e. 1H NMR (400 MHz, DMSO-d6) δ 13.34 (s, 1H), 7.89 (s, 2H), 7.49 (d, J=3.2 Hz, 1H), 7.25 (d, J=9.4 Hz, 1H), 6.80 (d, J=3.0 Hz, 1H), 6.13 (d, J=9.4 Hz, 1H), 2.41-2.28 (m, 1H), 1.95-1.09 (m, 10H); LC-MS [M+H]+: 498.
The target ZB-H-44 was prepared by using the synthetic route of the third step in Example 1, except that the raw material 1c in the third step was replaced by 26e. LC-MS [M+H]+: 484.
The target ZB-H-42 was prepared by using the synthetic route of the third step in Example 1, except that the raw material 1c in the third step was replaced by 27e. LC-MS [M+H]+: 470.
The target ZB-H-46 was prepared by using the synthetic route of the third step in Example 1, except that the raw material 1c in the third step was replaced by 22e. LC-MS [M+H]+: 500.
The target ZB-H-48 was prepared by using the synthetic route of the third step in Example 1, except that the raw material 1c in the third step was replaced by 23e. LC-MS [M+H]+: 516.
The target ZB-H-49 was prepared by using the synthetic route of the third step in Example 1, except that the raw material 1c in the third step was replaced by 24e. LC-MS [M+H]+: 548.
The target ZB-H-50 was prepared by using the synthetic route of the third step and the fourth step in Example 1, except that the raw material 1c in the third step was replaced by 25e, and the Boc protecting group was further removed. LC-MS [M+H]+: 499.
The First Step: Preparation Of Intermediate 37a
To a solution of 15e (1 mmol) in acetonitrile (4 mL), 2-bromoacetonitrile (3.66 mmol, 243 μL), NaI (219 mg, 1.46 mmol) and K2CO3 (202 mg, 1.46 mmol) were added. The mixture was then sealed in a tube and stirred at 100° C. for 16 hours. LCMS showed complete consumption of the starting material. The suspension was filtered through a pad of celite, and the filter cake was washed with ethyl acetate. The combined washings were concentrated to dryness, separated and purified by column chromatography to obtain 37a. LC-MS [M+H]+: 374.
The Second Step: Preparation of Intermediate 37b
To a solution of 37a (571.9 mmol) in tetrahydrofuran (3 mL), di-tert-butyl dicarbonate (374 mg, 1.72 mmol) and DMAP (70 mg, 571.85 mmol) were added, and the mixture was stirred at 40° C. for 3 hours. LCMS showed complete consumption of the starting material and the desired MS was detected. The mixture was partitioned between ethyl acetate and water, and the aqueous layer was extracted with ethyl acetate. The combined organic phases were washed with brine, dried over anhydrous sodium sulfate, filtered and concentrated in vacuum to obtain a residue, which was separated and purified by column chromatography to obtain 37b. LC-MS [M+H]+: 474.
The Third Step: Preparation of Intermediate 37c
To a solution of 37b (534.9 mmol) in DMF (3 mL), hydroxylamine hydrochloride (297 mg, 4.28 mmol) and NaOAc (351 mg, 4.28 mmol) were added. The mixture was stirred at 80° C. for 1 hour. LCMS showed complete consumption of the starting material. The reaction mixture was concentrated under reduced pressure to remove DMF. The residue was partitioned between ethyl acetate and water, and the aqueous layer was extracted with ethyl acetate. The combined organic layers were washed with brine, dried over anhydrous Na2SO4, filtered and concentrated in vacuum to obtain 37c, which was directly used in the next step without further purification. LC-MS [M+H]+: 507.
The Fourth Step: Preparation of Intermediate 37d
To a solution of 37c (520 mmol) in tetrahydrofuran (3 mL), DSC (173 mg) and TEA (105 mg, 1.04 mmol) were added. The mixture was stirred at 60° C. for 16 hours. LCMS showed complete consumption of the starting material and the desired MS was detected. The mixture was partitioned between ethyl acetate and water, and the aqueous layer was extracted with ethyl acetate. The combined organic layers were washed with brine, dried over anhydrous sodium sulfate, filtered and concentrated in vacuum to obtain a residue, which was separated and purified by column chromatography to obtain 37d. LC-MS [M+H]+: 533.
The Fifth Step: Preparation of ZB-H-52
37d (323.0 mmol) was put in hydrogen chloride/ethyl acetate (2 mL) and stirred at 25° C. for 2 hours. LCMS showed complete consumption of the starting material and the desired MS was detected. The mixture was diluted with water (0.5 mL), and the pH was adjusted to 8 with aqueous NaHCO3. The mixture was extracted with ethyl acetate. The combined organic layers was washed with brine, dried over anhydrous sodium sulfate, filtered and concentrated in vacuum to give a residue. The crude product was purified by preparative HPLC column to obtain the titled ZB-H-52. LC-MS [M+H]+: 433.
The First Step: Preparation of Intermediate 38a
15e (1 mmol) was dissolved in acetonitrile (5 mmol), added with cuprous iodide (2 mmol), and dropwise added with tert-butyl nitrite (2 mmol) under ice-water bath, stirred overnight at room temperature, rotarily evaporated to remove the solvent, and separated and purified by column chromatography to obtain 38a. LC-MS: [M+H]+: 398.
The Second Step: Preparation of Intermediate 38b
38a (1 mmol) was dissolved in dry 1,4-dioxane, added with diboron pinacol ester (2 mmol), potassium acetate (3 mmol) and [1,1′-bis(diphenylphosphino)ferrocene]palladium dichloride (0.05 mmol), reacted overnight at 80° C., rotarily evaporated to remove the solvent, and separated and purified by column chromatography to obtain 38b. LC-MS: [M+H]+: 447.
The Third Step: Preparation of ZB-H-53
38b (1 mmol) and 5-bromo-6-azauracil (38c, 1 mmol) were dissolved in 1,4-dioxane (5 mL), added with 2M aqueous sodium carbonate solution (2.5 mL), and added with [1,1′-bis (diphenylphosphino)ferrocene]palladium dichloride (0.1 mmol) under argon protection, refluxed at 110° C. for 3 hours under the protection of argon, cooled to room temperature, added with 50 ml of water, and extracted with ethyl acetate three times. The organic phases were combined, washed with saturated brine, concentrated to dryness under reduced pressure, separated and purified by column chromatography to obtain ZB-H-53. LC-MS [M+H]+: 432; 1H NMR (400 MHz, DMSO-d6) δ 12.82 (s, 1H), 12.32 (s, 1H), 8.15 (s, 2H), 7.46 (d, J=3.2 Hz, 1H), 7.18 (d, J=9.4 Hz, 1H), 6.73 (d, J=3.2 Hz, 1H), 6.11 (d, J=9.4 Hz, 1H), 5.51-5.00 (m, 1H), 1.51 (d, J=7.0 Hz, 6H)
ZB-H-54 was prepared by using the synthetic route of the third step in Example 38, except that the raw material 38c in the third step was replaced by 39a. LC-MS [M+H]+: 498. 1H NMR (400 MHz, DMSO-d6) δ 12.52 (s, 1H), 8.20 (s, 2H), 7.46 (d, J=3.2 Hz, 1H), 7.19 (d, J=9.4 Hz, 1H), 6.74 (d, J=3.1 Hz, 1H), 6.11 (d, J=9.4 Hz, 1H), 5.47-5.00 (m, 1H), 3.60 (s, 3H), 1.51 (d, J=7.0 Hz, 6H).
The target ZB-H-39 was prepared by using the synthetic route of Example 19, except that 15e was replaced by 21e. LC-MS [M+H]+: 488.
The target ZB-H-43 was prepared by using the synthetic route of Example 19, except that the raw material 15e was replaced by 27e. LC-MS [M+H]+: 460.
The target ZB-H-45 was prepared by using the synthetic route of Example 19, except that 15e was replaced by 26e. LC-MS [M+H]+: 474. 1H NMR (400 MHz, DMSO-d6) δ 13.35 (s, 1H), 7.89 (s, 2H), 7.50 (d, J=3.2 Hz, 1H), 7.27 (d, J=9.4 Hz, 1H), 6.62 (d, J=3.2 Hz, 1H), 6.12 (d, J=9.4 Hz, 1H), 5.45-5.04 (m, 1H), 2.27-2.11 (m, 2H), 2.04-1.82 (m, 4H), 1.75-1.60 (m, 2H).
The target ZB-H-47 was prepared by using the synthetic route of Example 19, except that 15e was replaced by 22e. LC-MS [M+H]+: 490. 1H NMR (400 MHz, DMSO-d6) δ 13.34 (s, 1H), 7.89 (s, 2H), 7.50 (d, J=3.2 Hz, 1H), 7.28 (d, J=9.4 Hz, 1H), 6.76 (d, J=3.2 Hz, 1H), 6.14 (d, J=9.4 Hz, 1H), 5.22-4.90 (m, 1H), 4.11-3.88 (m, 2H), 3.56-3.51 (m, 2H), 2.76-2.57 (m, 2H), 1.65-1.54 (m, 2H).
The target ZB-H-49 was prepared by using the synthetic route of Example 19, except that 15e was replaced by 23e. LC-MS [M+11]+: 506.
The target ZB-H-51 was prepared by using the synthetic route of Example 19, except that 15e was replaced by 25e, and the Boc protecting group was further removed. LC-MS [M+11]+: 489.
The target ZB-H-56 was prepared by using the synthetic route of Example 19, except that 15e was replaced by 24e. LC-MS [M+H]+: 538.
The target 47b was prepared by using the synthetic route of Example 20, wherein the cyclopropylboronic acid in the first step was replaced by phenylboronic acid, and the remaining steps and conditions were carried out as described in Example 20. LC-MS: [M+H]+: 371.
The target ZB-H-57 was prepared by using the synthetic route of the third step in Example 1, except that the raw material 1c in the third step was replaced by 47b. LC-MS: [M+H]+: 492.
The target ZB-H-58 was prepared by using the synthetic route of Example 19, except that 15e was replaced by 47b. LC-MS [M+H]+: 483.
The target 50e was prepared by using the synthetic route of Example 14, wherein the raw material lla in the first step was replaced by 50a, the raw material iodomethane in the third step was replaced by iodoisopropane, and the remaining steps and conditions were carried out as described in Example 14. LC-MS [M+H]+: 338.
The target ZB-H-35 was prepared by using the synthetic route of the third step in Example 1, except that the raw material 1c in the third step was replaced by 50e. 1H NMR (400 MHz, DMSO-d6) δ 13.38 (s, 1H), 8.42 (s, 1H), 7.93 (s, 2H), 7.64 (d, J=9.6 Hz, 1H), 6.48 (d, J=9.6 Hz, 1H), 5.42-5.13 (m, 1H), 1.51 (d, J=7.0 Hz, 6H); LC-MS [M+H]+: 459.
The target ZB-H-36 was prepared by using the synthetic route of Example 19, except that 15e was replaced by 50e. LC-MS [M+H]+: 450.
ZB-H-59 was prepared by using the synthetic route of Example 38, except that the raw material 38c in the third step was replaced by 53a. LC-MS [M+H]+: 475.
The First Step: Preparation of 54a
50c (500 mg, 1.54 mmol) was dissolved in 1,4-dioxane (10 mL) and put in a microwave reaction tube, added with benzyl bromide (800 mg, 4.63 mmol) and potassium carbonate (640 mg, 4.63 mmol) respectively, and microwaved at 150° C. for 12 hours. After the reaction was finished, the reaction solution was concentrated to dryness under reduced pressure, and purified by column chromatography to obtain 54a (1.2 g). 1NMR (600 MHz, Chloroform-d) δ 8.38 (s, 2H), 7.78 (d, J=1.0 Hz, 1H), 7.42-7.38 (m, 2H), 7.38-7.34 (m, 2H), 7.33-7.29 (m, 1H), 7.18 (dd, J=9.6, 0.9 Hz, 1H), 6.73 (d, J=9.6 Hz, 1H), 5.37 (s, 2H). LC-MS: [M+H]+: 416.
The Second Step: Preparation of 54b
To a solution of 54a (1 g, 2.41 mmol) in ethanol (20 mL), stannous chloride dihydrate (2.7 g, 12.0 mmol) was added. After the addition was completed, the reaction solution was raised to 80° C. and stirred for 6 hours. After the reaction was stopped, the reaction solution was cooled to room temperature naturally, concentrated to dryness under reduced pressure, and added with ethyl acetate (200 mL) to dissolve. The organic phase was washed with sodium hydroxide aqueous solution (2 M) three times, concentrated, and then subjected to column chromatography to obtain 54b, which was directly used in the next step.
The Third Step: Preparation of 54c
Tert-butyl nitrite (53 mg, 0.514 mmol) was dissolved in acetic acid (1 ml). This solution was slowly added to a solution of 54b (180 mg, 0.47 mmol) in acetic acid (10 ml) and acetonitrile (10 mL) at 0° C., stirred at 0° C. for 30 minutes, added dropwise with an acetonitrile solution of N-cyanoacetylurethane (80 mg, 0.514 mmol), and stirred for 3 hours after the dropwise addition. After the reaction was complete, the reaction solution was added to saturated aqueous sodium bicarbonate solution (70 ml), and a red solid was filtered out, washed with water and petroleum ether, and dried. The product was directly used in the next step. 1H NMR (400 MHz, DMSO-d6) δ 12.26 (s, 1H), 11.02 (s, 1H), 8.20 (s, 1H), 8.12 (s, 2H), 7.59 (d, J=9.6 Hz, 1H), 7.43 (d, J=7.2 Hz, 2H), 7.36 (t, J=7.5 Hz, 2H), 7.33-7.24 (m, 1H), 6.59 (d, J=9.6 Hz, 1H), 5.32 (s, 2H), 4.21 (q, J=7.1 Hz, 2H), 1.27 (t, J=7.1 Hz, 3H).LC-MS [M+H]+: 553.
The Fourth Step: Preparation of ZB-H-76
To the solid of 54c (1.0 mmol), N,N-dimethylacetamide (5 mL) and potassium acetate (2.0 mmol) was added, heat to 120° C. and stirred for 6 hours. After the reaction was completed, the reaction mixture was directly subjected to preparative chromatography to purify to obtain ZB-H-76. 1H NMR (400 MHz, Methanol-d4) δ 8.07 (d, J=0.9 Hz, 1H), 7.97 (s, 2H), 7.61 (dd, J=9.6, 0.9 Hz, 1H), 7.47-7.32 (m, 5H), 6.74 (d, J=9.5 Hz, 1H), 5.47 (s, 2H). LC-MS [M+H]+: 507.
15 ZB-H-60 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with methyl iodide (MeI). LC-MS [M+H]+: 431.
ZB-H-61 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with ethyl iodide. LC-MS [M+H]+: 445.
ZB-H-62 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with iodocyclobutane. LC-MS [M+H]+: 472.
ZB-H-63 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with iodocyclopentane. LC-MS [M+H]+: 485.
ZB-H-64 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 1-Boc-3-iodopyrrolidine, and the Boc protecting group was further removed. LC-MS [M+H]+: 485.
ZB-H-65 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with iodocyclohexane. LC-MS [M+H]+: 499.
ZB-H-66 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 4-iodotetrahydropyran. LC-MS [M+H]+: 501.
ZB-H-67 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with tetrahydro-4-iodo-2H-thiopyran. LC-MS [M+H]+: 517.
ZB-H-67 (1.0 mmol) was dissolved in dichloromethane (5 mL), added dropwise with a solution of m-chloroperoxybenzoic acid (0.9 mmol) in dichloromethane (5 mL) under ice bath, reacted under the ice bath for 30 minutes, quenched with saturated sodium bicarbonate solution after the reaction was completed, and extracted with dichloromethane three times. The organic phases were combined, rotarily evaporated to dryness, and purified by column chromatography to obtain ZB-H-68. LC-MS [M+H]+: 533.
ZB-H-67 (1.0 mmol) was dissolved in dichloromethane (5 mL), added dropwise with a solution of m-chloroperoxybenzoic acid (2.0 mmol) in dichloromethane (5 mL) under ice bath, reacted under the ice bath for 30 minutes, quenched with saturated sodium bicarbonate solution after the reaction was completed, and extracted with dichloromethane three times. The organic phases were combined, rotarily evaporated to dryness, and purified by column chromatography to obtain ZB-H-69. LC-MS [M+H]+: 549.
ZB-H-70 was prepared by referring to the synthetic route of Example 47 and Example 54. LC-MS [M+H]+: 593.
The First Step: Preparation of 66a
50c (200 mg, 0.615 mmol) was dissolved in 1,4-dioxane (10 mL) and put in a microwave reaction tube, added with bromomethylcyclopropane (250 mg, 1.845 mmol) and potassium carbonate (170 mg, 1.231 mmol) respectively, and microwaved at 150° C. for 12 hours. After the reaction was finished, the reaction solution was concentrated to dryness under reduced pressure, and purified by column chromatography to obtain 66a. 1H NMR (400 MHz, Chloroform-d) δ 8.37 (s, 2H), 7.88 (s, 1H), 7.16 (d, J=9.6 Hz, 1H), 6.67 (d, J=9.6 Hz, 1H), 4.04 (d, J=7.1 Hz, 2H), 2.02 (m, 1H), 1.30-1.15 (m, 4H). LC-MS: [M+H]+: 379.
The Second Step: Preparation of 66b
To a solution of 66a (80 mg, 0.212 mmol) in ethanol (10 mL), stannous chloride dihydrate (238 mg, 1.058 mmol) was added. After the addition was completed, the reaction solution was raised to 80° C. and stirred for 6 hours. After the reaction was stopped, the reaction solution was cooled to room temperature naturally, concentrated to dryness under reduced pressure, and added with ethyl acetate (10 mL) to dissolve. The organic phase was washed with sodium hydroxide aqueous solution (2M, 10 mL) three times and concentrated, and then subjected to column chromatography to obtain 66b, which was directly used in the next step. 1H NMR (400 MHz, Methanol-d4) δ 8.01 (s, 1H), 7.39 (d, J=9.5 Hz, 1H), 6.74 (s, 2H), 6.58 (d, J=9.5 Hz, 1H), 4.07 (d, J=7.1 Hz, 2H), 1.95 (m, 1H), 0.57-0.46 (m, 4H).
LC-MS [M+H]+: 350.
The Third Step: Preparation of 66c
Tert-butyl nitrite (16.2 mg, 0.1573 mmol) was dissolved in acetic acid (2 mL). This solution was slowly added to a solution of 66b (50 mg, 0.143 mmol) in acetic acid (2 ml) and acetonitrile (2 mL) at 0° C., stirred at 0° C. for 30 minutes, added dropwise with a solution of N-cyanoacetylurethane (25 mg, 01573 mmol) in acetonitrile (2 mL), and stirred for 3 hours after the dropwise addition. After the reaction was complete, the reaction solution was added to a saturated aqueous sodium bicarbonate solution (20 mL), and a red solid was filtered out, washed with water (10 mL) and petroleum ether (10 mL), and dried. The product was directly used in the next step. 1H NMR (400 MHz, DMSO-d6) δ 12.28 (s, 1H), 11.02 (s, 1H), 8.25 (d, J=0.9 Hz, 1H), 8.13 (s, 2H), 7.54 (dd, J=9.6, 0.9 Hz, 1H), 6.51 (d, J=9.6 Hz, 1H), 4.21 (q, J=7.1 Hz, 2H), 3.99 (d, J=7.1 Hz, 2H), 1.27 (t, J=7.1 Hz, 3H), 1.23 (m, 1H), 0.52-0.44 (m, 4H). LC-MS [M+H]+: 517.
The Fourth Step: Preparation of ZB-H-71
To the solid of 66c (81 mg, 0.1571 mmol), N,N-dimethylacetamide (5 mL) and potassium acetate (17 mg, 0.1716 mmol) was added, heat to 120° C. and stirred for 6 hours. After the reaction was completed, the reaction mixture was directly subjected to preparative chromatography to purify to obtain the ZB-H-71. 1H NMR (400 MHz, Methanol-d4) δ 8.19 (d, J=0.9 Hz, 1H), 7.96 (s, 2H), 7.56 (dd, J=9.6, 0.9 Hz, 1H), 6.66 (d, J=9.5 Hz, 1H), 4.14 (d, J=7.1 Hz, 2H), 1.48-1.36 (m, 1H), 0.64-0.49 (m, 4H). LC-MS [M+H]+: 471.
ZB-H-72 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with (iodomethyl)cyclobutane. LC-MS [M+H]+: 485.
ZB-H-73 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with (iodomethyl)cyclopentane. LC-MS [M+H]+: 489.
The First Step: Synthesis of 69a
69a was prepared by referring to the first step of the synthetic route of Example 54, except that 50c was replaced with 14c. 1H NMR (400 MHz, Chloroform-d) δ 8.38 (s, 2H), 7.40-7.27 (m, 5H), 7.03 (dd, J=9.6, 0.8 Hz, 1H), 6.92 (d, J=3.3 Hz, 1H), 6.49 (d, J=9.5 Hz, 1H), 6.37 (dd, J=3.3, 0.8 Hz, 1H), 5.41 (s, 2H).LC-MS [M+H]+: 415.
The Second Step: Synthesis of 69b
69b was obtained by referring to the second step of the synthetic route of Example 54. 1H NMR (400 MHz, DMSO-d6) δ 7.42-7.37 (m, 2H), 7.33 (t, J=7.4 Hz, 2H), 7.28-7.22 (m, 2H), 7.18 (d, J=9.4 Hz, 1H), 6.75 (s, 2H), 6.46 (d, J=3.2 Hz, 1H), 6.18 (d, J=9.4 Hz, 1H), 6.08 (s, 2H), 5.28 (s, 2H).LC-MS [M+H]+: 385.
The Third Step: Synthesis of 69c
69c was obtained by referring to the third step of the synthetic route of Example 54. LC-MS [M+H]+: 552.
The Fourth Step: Synthesis of ZB-H-74
ZB-H-74 was obtained by referring to the fourth step of the synthetic route of Example 54. 1H NMR (400 MHz, Methanol-d4) δ 7.92 (s, 2H), 7.40-7.28 (m, 7H), 6.56 (dd, J=3.3, 0.8 Hz, 1H), 6.45 (d, J=9.4 Hz, 1H), 5.48 (s, 2H). LC-MS [M+H]+:506.
The First Step: Synthesis of 70a
50c (500 mg, 1.54 mmol) was dissolved in toluene (20 mL), added with potassium cyclopropyltrifluoroborate (4.62 mmol), copper acetate (0.385 mmol), potassium carbonate (3.08 mmol), 1,10-phenanthroline (0.1925 mmol) and water (2 mL) respectively, purged with oxygen three times, and reacted at 80° C. overnight. After the reaction was completed, the reaction solution was concentrated to dryness under reduced pressure, and purified by column chromatography to obtain 70a. 1H NMR (400 MHz, Chloroform-d) δ 8.42 (s, 2H), 8.07 (d, J=0.9 Hz, 1H), 7.14 (dd, J=9.7, 0.9 Hz, 1H), 6.62 (d, J=9.6 Hz, 1H), 3.20 (tt, J=7.3, 4.0 Hz, 1H), 1.37-1.30 (m, 2H), 1.14-1.08 (m, 2H). LC-MS [M+H]+: 366.
The Second Step: Synthesis of 70b
70b was obtained by referring to the second step of the synthetic route of Example 54. 1H NMR (600 MHz, DMSO-d6) δ 8.00 (d, J=0.9 Hz, 1H), 7.38 (dd, J=9.5, 0.9 Hz, 1H), 6.76 (s, 2H), 6.38 (d, J=9.5 Hz, 1H), 6.27-6.03 (br.s, 2H), 3.10 (tt, J=7.3, 4.0 Hz, 1H), 1.16 (td, J=7.4, 5.6 Hz, 2H), 0.93-0.87 (m, 2H).LC-MS [M+H]+: 336.
The Third Step: Synthesis of 70c
70c was obtained by referring to the third step of the synthetic route of Example 54. 1H NMR (400 MHz, DMSO-d6) δ 12.27 (s, 1H), 11.00 (s, 1H), 8.12 (s, J=1.9 Hz, 2H), 8.10 (m, 1H), 7.49 (d, J=9.6 Hz, 1H), 6.43 (d, J=9.6 Hz, 1H), 4.21 (q, J=7.1 Hz, 2H), 3.12 (tt, J=7.2, 3.9 Hz, 1H), 1.27 (t, J=7.1 Hz, 3H), 1.23-1.13 (m, 2H), 0.94-0.86 (m, 2H).LC-MS [M+H]+: 503.
The Fourth Step: Synthesis of ZB-H-75
ZB-H-75 was obtained by referring to the fourth step of the synthetic route of Example 54. 1H NMR (500 MHz, DMSO-d6) δ 8.18 (d, J=0.9 Hz, 1H), 7.93 (s, 2H), 7.63 (d, J=9.6 Hz, 1H), 6.44 (d, J=9.6 Hz, 1H), 3.13 (td, J=7.1, 3.7 Hz, 1H), 1.18 (td, J=7.4, 5.6 Hz, 2H), 0.95-0.88 (m, 2H).LC-MS [M+H]+: 457.
The First Step: Preparation of 71a
50c (200 mg, 0.615 mmol) was dissolved in 1,4-dioxane (10 mL) and put in a microwave reaction tube, added with 4-fluorobenzyl bromide (233 mg, 1.231 mmol) and potassium carbonate (170 mg, 1.231 mmol) respectively, and microwaved at 150° C. for 12 hours. After the reaction was finished, the reaction solution was concentrated to dryness under reduced pressure, and purified by column chromatography to obtain 71a. 1H NMR (400 MHz, Methanol-d4) δ 6.98 (s, 2H), 6.57 (d, J=0.9 Hz, 1H), 6.04 (dd, J=9.5, 0.9 Hz, 114), 5.92-5.86 (m, 214), 5.57-5.49 (m, 214), 5.14 (d, J=9.5 Hz, 1H), 3.85 (s, 2H). LC-MS: [M+H]+: 434.
The Second Step: Preparation of 77b
To a solution of 77a (92 mg, 0.212 mmol) in ethanol (10 mL), stannous chloride dihydrate (238 mg, 1.058 mmol) was added. After the addition was completed, the reaction solution was raised to 80° C. and stirred for 6 hours. After the reaction was stopped, the reaction solution was cooled to room temperature naturally, concentrated to dryness under reduced pressure, and added with ethyl acetate (10 mL) to dissolve. The organic phase was washed with sodium hydroxide aqueous solution (2M, 10 mL) three times, concentrated, and then subjected to column chromatography to obtain 71b, which was directly used in the next step. LC-MS [M+H]+: 404.
The Third Step: Preparation of 71c
Tert-butyl nitrite (16.2 mg, 0.1573 mmol) was dissolved in acetic acid (2 mL). This solution was slowly added to a solution of 71b (58 mg, 0.143 mmol) in acetic acid (2 ml) and acetonitrile (2 mL) at 0° C., stirred at 0° C. for 30 minutes, added dropwise with a solution of N-cyanoacetylurethane (25 mg, 01573 mmol) in acetonitrile (2 mL), and stirred for 3 hours after the dropwise addition. After the reaction was complete, the reaction solution was added to a saturated aqueous sodium bicarbonate solution (20 mL), and a red solid was filtered out, washed with water (10 mL) and petroleum ether (10 mL), and dried. The product was directly used in the next step. 1H NMR (400 MHz, DMSO-d6) δ 12.27 (s, 1H), 11.01 (s, 1H), 8.25 (d, J=0.9 Hz, 1H), 8.12 (s, 2H), 7.59 (d, J=9.6 Hz, 1H), 7.56-7.47 (m, 2H), 7.23-7.16 (m, 2H), 6.58 (d, J=9.6 Hz, 1H), 5.30 (s, 2H), 4.21 (q, J=7.1 Hz, 2H), 1.27 (t, J=7.1 Hz, 3H). LC-MS [M+H]+: 571.
The Fourth Step: Preparation of ZB-H-77
To the solid of 71c (89 mg, 0.157 mmol), N,N-dimethylacetamide (5 mL) and potassium acetate (17 mg, 0.1716 mmol) was added, heat to 120° C. and stirred for 6 hours. After the reaction was completed, the reaction solution was directly subjected to preparative chromatography to purify to obtain ZB-H-77. 1H NMR (400 MHz, DMSO-d6) δ 13.36 (s, 1H), 8.32 (s, 1H), 7.93 (s, 2H), 7.74 (d, J=9.6 Hz, 1H), 7.56-7.47 (m, 2H), 7.20 (m, 2H), 6.59 (d, J=9.6 Hz, 1H), 5.31 (s, 2H). LC-MS [M+H]+: 525.
ZB-H-78 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 3-fluorobenzyl bromide. LC-MS [M+H]+: 525.
ZB-H-79 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 4-methylbenzyl bromide. LC-MS [M+H]+: 521.
ZB-H-80e was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 4-methoxybenzyl bromide. LC-MS [M+H]+: 537.
The First Step: Synthesis of 75a
75a was obtained by referring to the first step of the synthetic route of Example 54, except that the benzyl bromide was replaced with (bromomethyl)cyclohexane. 1H NMR (600 MHz, Chloroform-d) δ 8.36 (s, 2H), 7.82 (s, 1H), 7.13 (d, J=9.6 Hz, 1H), 6.62 (d, J=9.6 Hz, 114), 3.95 (d, J=7.4 Hz, 2H), 1.97 (dqt, J=10.6, 6.9, 3.2 Hz, 1H), 1.78-1.60 (m, 5H), 1.24-1.11 (m, 5H).LC-MS [M+H]+: 422.
The Second Step: Synthesis of 75b
75b was obtained by referring to the second step of the synthetic route of Example 54. 1H NMR (400 MHz, Methanol-d4) δ 7.88 (s, 1H), 7.36 (d, J=9.6 Hz, 1H), 6.78 (s, 2H), 6.63 (d, J=9.6 Hz, 1H), 4.03 (d, J=7.3 Hz, 2H), 2.00 (m, 1H), 1.73 (m, 5H), 1.24 (m, 5H). LC-MS [M+H]+: 392.
The Third Step: Synthesis of 75c
75c was obtained by referring to the third step of the synthetic route of Example 54. 1H NMR (600 MHz, DMSO-d6) δ 12.26 (s, 1H), 11.01 (s, 1H), 8.21 (s, 1H), 8.13 (s, 2H), 7.52 (d, J=9.6 Hz, 1H), 6.49 (d, J=9.6 Hz, 1H), 4.21 (q, J=7.1 Hz, 2H), 3.93 (d, J=7.3 Hz, 2H), 1.90 (m, 1H), 1.71-1.57 (m, 5H), 1.27 (t, J=7.1 Hz, 3H), 1.14 (m, 5H). LC-MS [M+H]+: 559.
The Fourth Step: Synthesis of ZB-H-81
ZB-H-81 was obtained by referring to the fourth step of the synthetic route of Example 54. 1H NMR (600 MHz, DMSO-d6) δ 13.35 (s, 1H), 8.28 (s, 1H), 7.93 (s, 2H), 7.67 (d, J=9.5 Hz, 1H), 6.51 (d, J=9.5 Hz, 1H), 3.94 (d, J=7.3 Hz, 2H), 1.90 (dtt, J=12.9, 8.9, 4.6 Hz, 1H), 1.71-1.58 (m, 5H), 1.19-1.07 (m, 5H).LC-MS [M+H] +:513.
ZB-H-82 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 4-bromomethyltetrahydropyran. LC-MS [M+H]+: 515.
ZB-H-83 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 4-(bromomethyp-tetrahydro-2H-thiopyran. LC-MS [M+H]+: 531.
ZB-H-83 (1.0 mmol) was dissolved in dichloromethane (5 mL), added dropwise with a solution of m-chloroperoxybenzoic acid (2.0 mmol) in dichloromethane (5 mL) under an ice bath, reacted in the ice bath for 30 minutes, quenched with saturated sodium bicarbonate solution after the reaction was completed, and extracted with dichloromethane three times. The organic phases were combined, rotarily evaporated to dryness, and purified by column chromatography to obtain ZB-H-84. LC-MS [M+H]+: 563.
ZB-H-85 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 4-(bromomethyl)-pyridine. LC-MS [M+H]+: 508.
ZB-H-86 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 3-bromomethylthiophene. LC-MS [M+H]+: 513.
ZB-H-87 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 2-bromomethylthiophene. LC-MS [M+H]+: 513.
ZB-H-88 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 2-bromomethylfuran. LC-MS [M+H]+: 497.
ZB-H-89 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 3-(bromomethyl)-5-methylisoxazole. LC-MS [M+H]+: 512.
ZB-H-90 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 4-(bromomethyl)-pyridine, and 50c was replaced with 14c. LC-MS [M+H]+: 507.
ZB-H-91 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 3-bromomethylthiophene, and 50c was replaced with 14c. LC-MS [M+H]+: 512.
ZB-H-92 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 2-bromomethylthiophene, and 50c was replaced with 14c. LC-MS [M+H]+: 512.
ZB-H-93 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 2-bromomethylfuran, and 50c was replaced with 14c. LC-MS [M+H]+: 496.
ZB-H-94 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 3-(bromomethyl)-5-methylisoxazole, and 50c was replaced with 14c. LC-MS [M+H]+: 511.
The First Step: Synthesis of 89a
89a was obtained by referring to the first step of the synthetic route of Example 54, except that the benzyl bromide was replaced with 1-iodo-2-methylpropane. 1H NMR (600 MHz, Chloroform-d) δ 8.37 (s, 2H), 7.82 (s, 1H), 7.14 (d, J=9.6 Hz, 1H), 6.63 (d, J=9.6 Hz, 1H), 3.95 (d, J=7.6 Hz, 2H), 1.28-1.15 (m, 1H), 1.00 (d, J=6.7 Hz, 6H).LC-MS [M+H]+: 382.
The Second Step: Synthesis of 89b
89b was obtained by referring to the second step of the synthetic route of Example 54. 1H NMR (400 MHz, Methanol-d4) δ 8.02 (s, 1H), 7.42 (d, J=9.5, 1H), 6.78 (s, 2H), 6.61 (d, J=9.5 Hz, 1H), 4.03 (d, J=7.6 Hz, 2H), 2.31 (m, 1H), 0.99 (d, J=6.7 Hz, 6H).LC-MS [M+H]+: 352.
The Third Step: Synthesis of 89c
89c was obtained by referring to the third step of the synthetic route of Example 54. 1H NMR (600 MHz, DMSO-d6) δ 8.22 (s, 1H), 8.12 (s, 2H), 7.53 (d, J=9.6 Hz, 1H), 6.50 (d, J=9.6 Hz, 1H), 4.21 (q, J=7.1 Hz, 2H), 3.92 (d, J=7.5 Hz, 2H), 2.28-2.16 (m, 1H), 1.27 (t, J=7.1 Hz, 3H), 0.92 (d, J=6.7 Hz, 6H).LC-MS [M+H]+: 519.
The Fourth Step: Synthesis of ZB-H-95
ZB-H-95 was obtained by referring to the fourth step of the synthetic route of Example 54. 1H NMR (600 MHz, DMSO-d6) δ 13.35 (s, 1H), 8.29 (d, J=1.0 Hz, 1H), 7.93 (s, 2H), 7.68 (d, J=9.6 Hz, 1H), 6.51 (d, J=9.6 Hz, 1H), 3.93 (d, J=7.5 Hz, 2H), 2.21 (m, 1H), 0.93 (d, J=6.7 Hz, 6H).LC-MS [M+H]+:473.
ZB-H-96 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 4-chlorobenzyl bromide. LC-MS [M+H]+: 541.
ZB-H-97 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 3 -chlorobenzyl bromide. LC-MS [M+H]+: 541.
ZB-H-98 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 2-chlorobenzyl bromide. LC-MS [M+H]+: 541.
ZB-H-99 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 2-fluorobenzyl bromide. LC-MS [M+H]+: 525.
ZB-H-100 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 2,4-difluorobenzyl bromide. LC-MS [M+H]+: 543.
ZB-H-101 was prepared by referring to the synthetic route of Example 54, except that the benzyl bromide in the first step of Example 54 was replaced with 4-(trifluoromethyl)benzyl bromide. LC-MS [M+H]+: 575.
Huh7 cells were cultured in a DMEM medium supplemented with 10% FBS. The cells were inoculated into a 10 cm cell culture dish, proliferated to about 90% confluency, and co-transfected by using a liposome (Lipofectamine 2000) with human THRa eukaryotic expression plasmid or human THRβ eukaryotic expression plasmid, as well as reporter gene plasmid PGL4.26-DR4-Luc containing THR response sequence driver. The operation steps were carried out according to the instructions of Lipofectamine 2000. The next day after transfection, the cells were inoculated with a phenol red-free DMEM (supplemented with 5% activated carbon-treated FBS) into a 96-well cell culture plate at a seeding density of 20,000 cells per well and a volume of 135 μL per well. The cells adhered to wall 6 hours after the inoculation. Compounds dissolved in DMSO were diluted in phenol red-free DMEM (supplemented with 5% activated carbon-treated FBS) to be 20 to 10 times of the final concentration, and added to the cell wells at 15 μL per well, that is, the compounds were diluted 10 times again to reach the final concentration. Triiodothyronine T3 (100 nM) was set as a positive control, and 0.5% DMSO was set as a blank control. After the compounds were added, the cells were cultured at 37° C. in a 5% CO2 incubator overnight (16 hours). After incubation, the culture medium was discarded, and each well was added with 35 μL of serum-free and phenol red-free DMEM and 35 μL of Steady-Glo, shaked for 10 minutes in the dark, and the chemiluminescence value of the sample was detected.
The agonistic activity of the compound was calculated as follows: % effect=(compound−blank control)/(positive control−blank control)×100%. The EC50 of the compound was obtained by fitting the agonistic activity of the compound and the logarithmic value of the compound concentration with GraphPad Prism. The lower the EC50 value, the better the activity.
The EC50 values of agonistic activities of compounds on THRa and THRβ were firstly corrected by the EC50 values of agonistic activities of T3 on THRa and THRβ in the same experiment, and then the multiple, that is, receptor selectivity were calculated based on the obtained values. The specific calculation method is as follows: Selectivity=(EC50 of compound on THRα/EC50 of T3 on THRα)/(EC50 of compound on THRβ/EC50 of T3 on THRβ). The higher the value, the higher the selectivity of the compound on the THRβ receptor.
The positive control is Resmetirom (MGL-3196) , which is a highly selective THR-β agonist (Reference: J. Med Chem. 2014, 57(10): 3912-3923.
Experimental results showed that some compounds of the present disclosure (such as ZB-H-02, ZB-H-17, ZB-H-18, ZB-H-25, ZB-H-26, ZB-H-33, ZB-H-38, ZB-H-74, ZB-H-75, ZB-H-76, ZB-H-81, ZB-H-95, etc.) have significantly higher activity or selectivity than the positive control, and most other compounds have activity or selectivity comparable to the positive control (MGL-3196).
ICR mice were used as test animals to test the changes in serum cholesterol level after intragastric administration of the compound to the mice. ICR mice (male, 7-8 weeks old) were randomly divided into groups according to body weight. The solvent control group was given 0.25% CMC-Na by intragastric administration, and the compound group was given the corresponding compounds to be tested with single administration, respectively. Mice were fasted overnight on the day of administration. 24 h after administration, blood was taken and serum was collected. Cholesterol level in mouse serum was measured with a total cholesterol assay kit (Zhejiang Dongou Diagnostic Products Co., Ltd.). The percentage of reduction in serum cholesterol level of mice in each group was calculated with the solvent control group as 100%.
The experimental results obtained 24 hours after the administration showed that the compounds of the present disclosure have a certain in vivo medicinal effects in animals.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202011478971.9 | Dec 2020 | CN | national |
| 202111482622.9 | Dec 2021 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2021/136993 | 12/10/2021 | WO |
