WO2023165438A1 - 三环类衍生物及其制备方法和用途 - Google Patents

三环类衍生物及其制备方法和用途 Download PDF

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WO2023165438A1
WO2023165438A1 PCT/CN2023/078415 CN2023078415W WO2023165438A1 WO 2023165438 A1 WO2023165438 A1 WO 2023165438A1 CN 2023078415 W CN2023078415 W CN 2023078415W WO 2023165438 A1 WO2023165438 A1 WO 2023165438A1
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group
nitro
alkyl
aryl
dihydro
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PCT/CN2023/078415
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English (en)
French (fr)
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郭阳辉
张恒
廖伟伟
陈友喜
叶成
徐代旺
徐肖杰
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浙江海正药业股份有限公司
上海昂睿医药技术有限公司
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Publication of WO2023165438A1 publication Critical patent/WO2023165438A1/zh

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/495Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • A61K31/505Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
    • A61K31/519Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim ortho- or peri-condensed with heterocyclic rings
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/535Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one oxygen as the ring hetero atoms, e.g. 1,2-oxazines
    • A61K31/53751,4-Oxazines, e.g. morpholine
    • A61K31/53831,4-Oxazines, e.g. morpholine ortho- or peri-condensed with heterocyclic ring systems
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00Antineoplastic agents
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D471/00Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
    • C07D471/02Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
    • C07D471/04Ortho-condensed systems
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D487/00Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/02Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
    • C07D487/04Ortho-condensed systems
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D491/00Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
    • C07D491/02Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains two hetero rings
    • C07D491/10Spiro-condensed systems
    • C07D491/107Spiro-condensed systems with only one oxygen atom as ring hetero atom in the oxygen-containing ring
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D498/00Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
    • C07D498/02Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
    • C07D498/04Ortho-condensed systems

Definitions

  • the present invention relates to a substituted tricyclic derivative, a preparation method thereof, a pharmaceutical composition containing the derivative and its use as a therapeutic agent, especially as an SOS1 inhibitor.
  • RAS genes are widely found in various eukaryotic organisms such as mammals, fruit flies, fungi, nematodes and yeasts, and have important physiological functions in various life systems.
  • the mammalian RAS gene family has three members, namely H- RAS, K-RAS and N-RAS, each RAS gene has a similar structure, and all of them are composed of four exons, which are distributed on the DNA with a total length of about 30 kb.
  • Their encoded products are monomeric globular proteins with a relative molecular mass of 21kDa.
  • the activation and inactivation state of RAS protein has a significant impact on the life processes such as cell growth, differentiation, proliferation and apoptosis.
  • This protein is a membrane-bound guanine nucleotide-binding protein with weak GTPase activity and regulates RAS through GTPase-activating proteins (GAPs) and guanine nucleotide exchange factors (GEFs) in normal physiological activities
  • GAPs GTPase-activating proteins
  • GEFs guanine nucleotide exchange factors
  • the active state when the RAS protein combines with GTP to form RAS-GTP, it is the active state, and the GTPase activating protein can dephosphorylate RAS-GTP into RAS-GDP, and then inactivate it; the inactivated RAS-GDP is in the guanine Under the action of nucleotide exchange factors, it is transformed into active RAS-GTP, thereby activating a series of downstream pathways such as RAF/MER/ERK and PI3K/AKT/mTOR.
  • the RAS gene is also closely related to various human diseases, especially in cancer.
  • RAS is a frequently mutated oncogene, and the KRAS subtype gene mutation accounts for 86% of the total number of RAS gene mutations, and about 90% of pancreatic cancers. 30%-40% of colon cancer and 15-20% of lung cancer have different degrees of KRAS gene mutation.
  • this target has always been the focus of drug research and development workers. Since the announcement of the clinical results of AMG-510, which directly acts on the KRAS-G12C target, research on KRAS inhibitors has set off a wave of upsurge at home and abroad.
  • SOS Seon of sevenless homolog
  • hSOS1 and hSOS2 SOS homologues
  • hSOS1 and hSOS2 SOS homologues
  • hSOS1 and hSOS2 SOS homologues
  • hSOS1 and hSOS2 SOS homologues
  • the hSOS1 protein is 150kDa in size and is a multi-structural protein domain consisting of 1333 amino acids, including an N-terminal protein domain (HD), multiple homology domains, a helical linker (HL), a RAS exchange sequence (REM) and a rich Proline C-terminal domain.
  • HD N-terminal protein domain
  • HL helical linker
  • REM RAS exchange sequence
  • RAS protein on hSOS1 There are two binding sites for RAS protein on hSOS1, namely the catalytic site and the allosteric site.
  • the catalytic site binds to the RAS protein on the RAS-GDP complex to promote the exchange of guanine nucleotides.
  • the RAS protein on the RAS-GTP complex further enhances the catalytic effect, and then participates in and activates the signal transduction of RAS family proteins.
  • the present invention provides a substituted tricyclic compound represented by general formula (I) or its stereoisomers, tautomers or pharmaceutically acceptable salts thereof:
  • Ring A is selected from C 6 -C 10 aryl, 5-10 membered heteroaryl, 5-8 membered heterocyclic group or 9-10 membered bicyclic heterocyclic group;
  • Ring B is selected from a 4-11 membered heterocyclic ring, a C 6 -C 10 aromatic ring or a 5-10 membered aromatic heterocyclic ring;
  • X is selected from N or CR a ; X is preferably CR a ;
  • R is selected from a hydrogen atom, an alkyl group, a halogen or a cycloalkyl group
  • R 6 , R 7 and R 8 are each independently selected from a hydrogen atom, alkyl, amino, cycloalkyl, heterocyclyl, aryl or heteroaryl, wherein the alkyl, cycloalkyl, heterocyclyl , aryl or heteroaryl are optionally further replaced by one or more selected from hydroxyl, halogen, nitro, amino, cyano, alkyl, alkoxy, cycloalkyl, heterocyclyl, aryl, heteroaryl , carboxyl or carboxylate substituents;
  • each r is independently selected from 0, 1 or 2;
  • n is selected from 1, 2, 3 or 4;
  • n is selected from 1, 2, 3 or 4.
  • a compound represented by general formula (I) or its stereoisomer, tautomer or pharmaceutically acceptable salt thereof is a compound represented by general formula (II) or its Stereoisomers, tautomers or pharmaceutically acceptable salts thereof:
  • ring B, R 1 , R 2 , m and n are as defined in general formula (I).
  • a compound represented by general formula (I) or (II) or its stereoisomer, tautomer or pharmaceutically acceptable salt thereof wherein R is selected from C 1 - C 4 Alkyl, halogen, C 1- C 4 haloalkyl or amino; preferably trifluoromethyl, difluoromethyl, amino or fluorine atom.
  • R 3 is selected from C 1- C 4 alkyl, preferably methyl.
  • a compound represented by general formula (I) or (II) or its stereoisomer, tautomer or pharmaceutically acceptable salt thereof wherein ring B is selected from 5-6 membered Heterocyclic ring or 5-6 membered aromatic heterocyclic ring; ring B is preferably the following structure:
  • the compound described in general formula (I) is selected from:
  • the present invention provides a pharmaceutical composition, which contains an effective dose of the compound described in general formula (I) or (II) or its stereoisomer, tautomer or its equivalent A pharmaceutically acceptable salt, and a pharmaceutically acceptable carrier, excipient or their combination.
  • the present invention provides a compound described in general formula (I) or (II) or its stereoisomer, tautomer or pharmaceutically acceptable salt thereof, or its pharmaceutical composition in the preparation of SOS1 inhibitor use.
  • the present invention also provides a compound described in general formula (I) or (II) or its stereoisomers, tautomers or pharmaceutically acceptable salts thereof, or its pharmaceutical composition in the preparation and treatment of SOS1-mediated
  • the diseases mediated by SOS1 are preferably RAS family protein signaling pathway-dependent cancers, cancers caused by SOS1 mutations, or hereditary diseases caused by SOS1 mutations; wherein the The disease mediated by SOS1 is preferably lung cancer, pancreatic cancer, colon cancer, bladder cancer, prostate cancer, cholangiocarcinoma, gastric cancer, diffuse large B-cell lymphoma, neurofibroma, Noonan syndrome, cardiofacial skin syndrome , Type I hereditary gingival fibroma, embryonal rhabdomyosarcoma, Sertoli cell testicular tumor or cutaneous granulosa cell tumor.
  • the present invention further provides a compound described in general formula (I) or (II) or its stereoisomer, tautomer or pharmaceutically acceptable salt thereof, or its pharmaceutical composition in the preparation of therapeutic RAS family protein Use in medicine for cancers related to signal transduction pathway dependence, cancers caused by SOS1 mutations, or hereditary diseases caused by SOS1 mutations.
  • the present invention provides a kind of compound described in general formula (I) or (II) or its stereoisomer, tautomer or its pharmaceutically acceptable salt, or its pharmaceutical composition in the preparation treatment lung cancer, pancreatic cancer , colon cancer, bladder cancer, prostate cancer, cholangiocarcinoma, gastric cancer, diffuse large B-cell lymphoma, neurofibroma, Noonan syndrome, cardiofacial skin syndrome, hereditary gingival fibroma type I, embryonal rhabdomyosarcoma , Sertoli cell testicular tumor or cutaneous granulosa cell tumor for use in medicine.
  • Alkyl when used as a group or a part of a group refers to a C 1 -C 20 straight chain or branched aliphatic hydrocarbon group. It is preferably C 1 -C 10 alkyl, more preferably C 1 -C 6 alkyl.
  • alkyl groups include, but are not limited to, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, sec-butyl, n-pentyl, 1,1-di Methylpropyl, 1,2-dimethylpropyl, 2,2-dimethylpropyl, 1-ethylpropyl, 2-methylbutyl, 3-methylbutyl, n-hexyl, 1 -Ethyl-2-methylpropyl, 1,1,2-trimethylpropyl, 1,1-dimethylbutyl, 1,2-dimethylbutyl, 2,2-dimethyl Butyl, 1,3-dimethylbutyl, 2-ethylbutyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 2,3-dimethylbutyl wait.
  • Alkyl groups can be substituted or unsubstituted.
  • Cycloalkyl refers to saturated or partially saturated monocyclic, fused, bridged and spiro carbocyclic rings. It is preferably a C 3 -C 12 cycloalkyl group, more preferably a C 3 -C 8 cycloalkyl group, and most preferably a C 3 -C 6 cycloalkyl group.
  • Examples of monocyclic cycloalkyls include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclohexyl, cyclohexenyl, cyclohexadienyl, cycloheptyl, cycloheptyl Alkenyl, cyclooctyl, etc., preferably cyclopropyl, cyclohexenyl. Cycloalkyl groups can be substituted or unsubstituted.
  • “Spirocycloalkyl” refers to a polycyclic group with 5 to 18 members, two or more ring structures, and a single carbon atom shared between the single rings (called a spiro atom).
  • the ring may contain 1 or An aromatic system with multiple double bonds but none of the rings has fully conjugated ⁇ electrons. Preferably it is 6 to 14 yuan, more preferably 7 to 10 yuan.
  • the spiro cycloalkyl group can be divided into single spiro, double spiro or polyspiro cycloalkyl, preferably single spiro and double spiro cycloalkyl, preferably 4-membered/5-membered, 4-membered Yuan/6 yuan, 5 yuan/5 yuan or 5 yuan/6 yuan.
  • spirocycloalkyl include, but are not limited to: spiro[4.5]decyl, spiro[4.4]nonyl, spiro[3.5]nonyl, spiro[2.4]heptyl.
  • “Fused cycloalkyl” refers to a 5 to 18-membered, full-carbon polycyclic group containing two or more ring structures sharing a pair of carbon atoms with each other, and one or more rings may contain one or more double bonds, Aromatic systems where none of the rings have fully conjugated pi-electrons, preferably 6 to 12, more preferably 7 to 10 membered. According to the number of rings, it can be divided into bicyclic, tricyclic, tetracyclic or polycyclic condensed cycloalkyl groups, preferably bicyclic or tricyclic, more preferably 5-membered/5-membered or 5-membered/6-membered bicycloalkyl groups.
  • fused cycloalkyl include, but are not limited to: bicyclo[3.1.0]hexyl, bicyclo[3.2.0]hept-1-enyl, bicyclo[3.2.0]heptyl, Decalinyl or tetrahydrophenanthrenyl.
  • “Bridged cycloalkyl” refers to a 5- to 18-membered, full-carbon polycyclic group that contains two or more ring structures and shares two carbon atoms that are not directly connected to each other.
  • One or more rings may contain one or more Aromatic systems with multiple double bonds but none of the rings having fully conjugated pi electrons are preferably 6 to 12 membered, more preferably 7 to 10 membered. According to the number of rings, it can be divided into bicyclic, tricyclic, tetracyclic or polycyclic bridged cycloalkyl groups, preferably bicyclic, tricyclic or tetracyclic, more preferably bicyclic or tricyclic.
  • bridged cycloalkyl include, but are not limited to: (1s,4s)-bicyclo[2.2.1]heptyl, bicyclo[3.2.1]octyl, (1s,5s)-bis Cyclo[3.3.1]nonyl, bicyclo[2.2.2]octyl, (1r,5r)-bicyclo[3.3.2]decyl.
  • Alkenyl means an alkyl group as defined above consisting of at least two carbon atoms and at least one carbon-carbon double bond, representative examples include but are not limited to ethenyl, 1-propenyl, 2-propenyl, 1-, 2- or 3-butenyl, etc. Alkenyl groups can be optionally substituted or unsubstituted.
  • Heterocyclyl “heterocyclic” or “heterocyclic” are used interchangeably in this application and all refer to non-aromatic heterocyclic groups in which one or more atoms forming the ring are heteroatoms, such as oxygen, Nitrogen, sulfur atoms, etc., including monocyclic, polycyclic, condensed, bridged and spiro rings. It preferably has a 5 to 7 membered monocyclic ring or a 7 to 10 membered bicyclic or tricyclic ring, which may contain 1, 2 or 3 atoms selected from nitrogen, oxygen and/or sulfur.
  • Examples of “monocyclic heterocyclyl” include, but are not limited to, morpholinyl, oxetanyl, thiomorpholinyl, tetrahydrofuranyl, tetrahydropyranyl, 1,1-dioxo-thiomorpholinyl, Linyl, piperidinyl, 2-oxo-piperidinyl, pyrrolidinyl, 2-oxo-pyrrolidinyl, piperazin-2-onyl, piperazinyl, hexahydropyrimidinyl,
  • Monocyclic heterocyclyl groups may be substituted or unsubstituted.
  • “Spiroheterocyclic group” refers to a polycyclic group with 5 to 18 members, two or more ring structures, and one atom shared between the single rings.
  • the ring may contain one or more double bonds, but Aromatic systems in which none of the rings have fully conjugated ⁇ -electrons, in which one or more ring atoms are selected from nitrogen, oxygen or heteroatoms of S(O) n (where n is selected from 0, 1 or 2), and the remaining ring atoms for carbon.
  • it is 6 to 14 yuan, more preferably 7 to 10 yuan.
  • spirocycloalkyl groups can be classified into single spiroheterocyclyl, double spiroheterocyclyl or polyspiroheterocyclyl, preferably single spiroheterocyclyl and double spiroheterocyclyl. More preferably, it is a 4-membered/4-membered, 4-membered/5-membered, 4-membered/6-membered, 5-membered/5-membered or 5-membered/6-membered monospiro heterocyclic group.
  • spiroheterocyclyl include, but are not limited to: 1,7-dioxaspiro[4.5]decyl, 2-oxa-7-azaspiro[4.4]nonyl, 7-oxaspiro[4.4]nonyl, Spiro[3.5]nonyl, 5-oxaspiro[2.4]heptyl,
  • a spiroheterocyclyl can be substituted or unsubstituted.
  • “Fused heterocyclic group” refers to a polycyclic group containing two or more ring structures that share a pair of atoms with each other, one or more rings may contain one or more double bonds, but none of the rings has complete conjugation
  • An aromatic system of ⁇ electrons wherein one or more ring atoms are selected from nitrogen, oxygen or S(O) n (wherein n is selected from 0, 1 or 2) heteroatoms, and the remaining ring atoms are carbon.
  • it is 6 to 14 yuan, more preferably 7 to 10 yuan.
  • bicyclic, tricyclic, tetracyclic or polycyclic fused heterocyclic groups preferably bicyclic or tricyclic, more preferably 5-membered/5-membered or 5-membered/6-membered bicyclic fused heterocyclic groups.
  • fused heterocyclyl include, but are not limited to: octahydropyrrolo[3,4-c]pyrrolyl, octahydro-1H-isoindolyl, 3-azabicyclo[3.1. 0]hexyl, octahydrobenzo[b][1,4]dioxine.
  • “Bridged heterocyclic group” refers to a polycyclic group with 5 to 14 members, 5 to 18 members, containing two or more ring structures, sharing two atoms that are not directly connected to each other, and one or more rings can be Contains one or more double bonds, but does not have a ring Aromatic systems with fully conjugated ⁇ -electrons, wherein one or more ring atoms are selected from nitrogen, oxygen or heteroatoms of S(O) n (where n is selected from 0, 1 or 2), and the remaining ring atoms are carbon. Preferably it is 6 to 14 yuan, more preferably 7 to 10 yuan.
  • bridged heterocyclyl include, but are not limited to: 2-azabicyclo[2.2.1]heptyl, 2-azabicyclo[2.2.2]octyl, 2-azabicyclo[2.2.2]octyl, cyclo[3.3.2]decyl,
  • Bridged heterocyclyl groups can be substituted or unsubstituted.
  • Aryl means a carbocyclic aromatic system containing one or two rings, wherein the rings may be joined together in a fused fashion.
  • aryl includes monocyclic or bicyclic aryl groups, such as phenyl, naphthyl, tetrahydronaphthyl aromatic groups. Preferred aryl groups are C 6 -C 10 aryl groups, more preferred aryl groups are phenyl and naphthyl, most preferably phenyl.
  • Aryl groups can be substituted or unsubstituted.
  • Heteroaryl refers to an aromatic 5 to 6 membered monocyclic ring or 8 to 10 membered bicyclic ring, which may contain 1 to 4 atoms selected from nitrogen, oxygen and/or sulfur.
  • heteroaryl include, but are not limited to, furyl, pyridyl, 2-oxo-1,2-dihydropyridyl, pyridazinyl, pyrimidinyl, pyrazinyl, thienyl, isoxazolyl , oxazolyl, oxadiazolyl, imidazolyl, pyrrolyl, pyrazolyl, triazolyl, tetrazolyl, thiazolyl, isothiazolyl, 1,2,3-thiadiazolyl, benzo Dioxolyl, benzothienyl, benzimidazolyl, indolyl, isoindolyl, 1,3-dioxo-isoin
  • Heteroaryl groups can be substituted or unsubstituted.
  • Alkoxy refers to a group of (alkyl-O-). Wherein, alkyl refers to relevant definitions herein. C 1 -C 6 alkoxy is preferred. Examples include, but are not limited to: methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, tert-butoxy, and the like.
  • C 1 -C 6 hydroxyalkyl refers to hydroxy substituted C 1 -C 6 alkyl.
  • C 1 -C 3 halogen-containing alkyl group refers to a halogen-substituted C 1 -C 3 alkyl group.
  • C 1 -C 6 halogen-containing alkyl group refers to a halogen-substituted C 1 -C 6 alkyl group.
  • Haldroxy means an -OH group.
  • Halogen refers to fluorine, chlorine, bromine and iodine.
  • Amino refers to -NH2 .
  • Cyano refers to -CN.
  • Niro refers to -NO2 .
  • Benzyl means -CH2 -phenyl.
  • DMSO dimethylsulfoxide
  • BOP refers to benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate.
  • DBU refers to 1,8-diazabicyclo[5.4.0]undec-7-ene.
  • DCC dicyclohexylcarbodiimide
  • EDCI refers to 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide.
  • PdCl 2 (dppf) refers to [1,1'-bis(diphenylphosphino)ferrocene]palladium dichloride.
  • Pd(PPh 3 ) 2 Cl 2 refers to bis(triphenylphosphine)palladium dichloride.
  • Pd(dba) 3 refers to tris(dibenzylideneacetone)dipalladium.
  • XantPhos refers to 4,5-bisdiphenylphosphine-9,9-dimethylxanthene.
  • HATU refers to 2-(7-azabenzotriazole)-N,N,N',N'-tetramethyluronium hexafluorophosphate.
  • 9-BBN refers to 9-boronbicyclo[3.3.1]nonane.
  • Carter condensing agent refers to benzotriazol-1-oxytris(dimethylamino)phosphonium hexafluorophosphate.
  • leaving group an atom or functional group that is separated from a larger molecule in a chemical reaction, is a term used in nucleophilic substitution reactions and elimination reactions.
  • the reactant attacked by the nucleophile is called the substrate, and the atom or atomic group that breaks off with a pair of electrons from the substrate molecule is called the leaving group.
  • Groups that are easy to accept electrons and have strong ability to bear negative charges are good leaving groups. The smaller the pKa of the conjugate acid of the leaving group, the easier it is for the leaving group to detach from other molecules.
  • Common leaving groups include, but are not limited to, halogens, methanesulfonyl, -OTs, or -OH.
  • Substituted means that one or more hydrogen atoms in a group, preferably up to 5, more preferably 1 to 3 hydrogen atoms are independently substituted by the corresponding number of substituents. It goes without saying that substituents are only in their possible chemical positions and that a person skilled in the art can determine (by experiment or theory) possible or impossible substitutions without undue effort. For example, an amino or hydroxyl group with free hydrogen may be unstable when bonded to a carbon atom with an unsaturated (eg, ethylenic) bond.
  • substitution or “substituted” in this specification, unless otherwise specified, means that a group can be substituted by one or more substituents.
  • “Pharmaceutically acceptable salt” refers to certain salts of the above compounds that can maintain their original biological activity and are suitable for medical use.
  • the pharmaceutically acceptable salt of the compound represented by the general formula (I) may be a metal salt or an amine salt with a suitable acid.
  • “Pharmaceutical composition” means a mixture containing one or more compounds described herein, or a physiologically acceptable salt or prodrug thereof, and other chemical components, as well as other components such as physiologically acceptable carriers and excipients. Forming agent.
  • the purpose of the pharmaceutical composition is to promote the administration to the organism, facilitate the absorption of the active ingredient and thus exert biological activity.
  • the present invention provides a preparation method of a compound of general formula (I) or its stereoisomer, tautomer or pharmaceutically acceptable salt thereof, said method comprising:
  • General formula (IA) compound and (IB) compound under the condition of condensing agent be preferably Carter condensing agent, BOP condensing agent, DCC condensing agent, EDCI condensing agent and HATU condensing agent, generation condensation reaction obtains general formula (I) compound ;
  • R 1 contains a nitro group, it can be further reduced to an amino group;
  • Ring A, ring B, X, R 1 , R 2 , m and n are as defined in general formula (I).
  • the present invention provides a preparation method of a compound of general formula (II) or its stereoisomers, tautomers or pharmaceutically acceptable salts thereof, the method comprising:
  • Ring B, R 1 , R 2 , m and n are as defined in general formula (II).
  • the mass spectrum is measured by LC/MS instrument, and the ionization method can be ESI or APCI.
  • the thin-layer chromatography silica gel plate uses Yantai Huanghai HSGF254 or Qingdao GF254 silica gel plate.
  • the specification of the silica gel plate used in thin-layer chromatography (TLC) is 0.15mm-0.2mm, and the specification of thin-layer chromatography separation and purification products is 0.4mm. ⁇ 0.5mm.
  • CD 3 OD deuterated methanol.
  • the nitrogen atmosphere means that the reaction bottle is connected to a nitrogen balloon with a volume of about 1 L.
  • the solution in the reaction refers to an aqueous solution.
  • the volume ratio of the solvent varies according to the polarity of the compound, and can also be adjusted by adding a small amount of acidic or basic reagents, such as acetic acid or Triethylamine etc.
  • Benzo[d][1,3]dioxazole-5-carbonitrile 2a (500mg, 3.40mmol) was dissolved in acetic acid (5mL), fuming nitric acid (7.20g, 114.3mmol) was added slowly, and reacted overnight at room temperature. After the reaction was complete, ethyl acetate (20 mL) and water (20 mL) were added, The aqueous phase was extracted with ethyl acetate (10mL ⁇ 2), the organic phases were combined, dried over anhydrous sodium sulfate, and concentrated under reduced pressure to obtain 6-nitrobenzo[d][1,3]dioxazole-5-carbonitrile 2b (306 mg), 46.9% yield.
  • 6-nitrobenzo[d][1,3]dioxazole-5-carboxamide 2c 130 mg, 619 ⁇ mol
  • ethyl acetate 0.5 mL
  • palladium carbon 10%, 75.1 mg
  • the hydrogen gas was replaced, and the reaction was carried out at room temperature for 3 hours.
  • 6-aminobenzo[d][1,3]dioxazole-5-carboxamide 2d 101 mg was obtained with a yield of 90.6%.
  • 6-methyl-[1,3]dioxazol[4,5-g]quinazolin-8(7H)-one 2e 60 mg, 294 ⁇ mol
  • (R)-1-(3- (Difluoromethyl)-2-fluorophenyl)ethane-1-amine 1e 83.4 mg, 441 ⁇ mol
  • Carter condensate 169 mg, 382 ⁇ mol
  • DBU 67.10 mg, 440.78 ⁇ mol
  • 3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylic acid methyl ester 3b 400mg, 1.93mmol was dissolved in acetic acid (10mL) , slowly added fuming nitric acid (12.2g, 193mmol, 8.45mL) dropwise, and stirred at room temperature for 16 hours.
  • 6-nitro-2-oxo-1,2,3,4-tetrahydroquinolin-7-yl trifluoromethanesulfonate 7c 400mg, 1.18mmol
  • zinc cyanide 165.66mg, 1.41mmol
  • tetrakis(triphenylphosphine)palladium 203.78 mg, 176.35 ⁇ mol
  • 6-nitro-2-oxo-1,2,3,4-tetrahydroquinoline-7-carbonitrile 7d (100mg, 460.45 ⁇ mol), iodomethane (130.71mg, 920.89 ⁇ mol) and potassium carbonate (127.28mg , 920.89 ⁇ mol) were successively added into acetonitrile (1 mL), and the stirring reaction was continued for 24 hours at room temperature.
  • 6-Ethyl-4-hydroxyl-2-methyl-6H-[1,4]oxazin[3,2-g]quinazolin-7(8H)-one 8g (100mg, 385.71 ⁇ mol), Carter Condensing agent (221.77 mg, 501.43 ⁇ mol), DBU (176.16 mg, 1.16 mmol, 173.04 ⁇ L) and (R)-1-(3-(difluoromethyl)-2-fluorophenyl)ethane-1-amine 1e (72.97 mg, 385.71 ⁇ mol) was sequentially added to N,N-dimethylformamide (0.8 mL), and the reaction was stirred at room temperature for 16 hours.
  • Methyl 1-methyl-5-nitro-1H-benzo[d]imidazole-6-carboxylate 14c 70 mg, 297.62 ⁇ mol
  • 10% palladium on carbon catalyst 31.67 mg, 297.62 ⁇ mol
  • the stirring reaction was continued for 3 hours at room temperature.
  • the filtrate was concentrated under reduced pressure to obtain the crude product 5-amino-1-methyl-1H-benzo[d]imidazole-6-carboxylic acid methyl ester 14d, which was directly used in the next reaction.
  • 1,6-Dimethyl-1H-imidazo[4,5-g]quinazolin-8-ol 14e 60 mg, 280.08 ⁇ mol
  • (R)-1-(3-(difluoromethyl) -2-Fluorophenyl)ethane-1-amine 1e 94.80mg, 420.12 ⁇ mol
  • Carter's condensing agent 185.81mg, 420.12 ⁇ mol
  • DBU 127.92mg, 840.25 ⁇ mol, 118.44 ⁇ L
  • 6-nitro-2-oxo-1,2,3,4-tetrahydroquinoline-7-carbonitrile 7d 72mg, 331.52 ⁇ mol
  • N-bromosuccinimide 76.71mg, 430.98 ⁇ mol
  • azobisisobutyronitrile 8.17 mg, 49.73 ⁇ mol
  • 6-nitro-2-oxo-1,2-dihydroquinoline-7-carbonitrile 15a 55 mg, 255.62 ⁇ mol
  • iodomethane 72.56 mg, 511.24 ⁇ mol, 31.83 ⁇ L
  • potassium carbonate 70.66 mg, 511.24 ⁇ mol
  • 6-Amino-1-methyl-2-oxo-1,2-dihydroquinoline-7-carboxamide 15d 25 mg, 115.09 ⁇ mol
  • triethyl orthoacetate 56.01 mg, 345.27 ⁇ mol
  • acetic acid 13.82mg, 230.18 ⁇ mol
  • methyl 3,4-dihydroxybenzoate 16a 500mg, 2.97mmol
  • phosphorus pentoxide 633.38mg, 4.46mmol
  • acetone 345.41mg, 5.95mmol, 437.22 ⁇ L
  • Methyl 2,2-dimethylbenzo[d][1,3]dioxazole-5-carboxylate 16b (20 mg, 96.06 ⁇ mol, 17.01 ⁇ L) and concentrated nitric acid (605.28 mg, 9.61 mmol, 420.33 ⁇ L ) were sequentially added to acetic acid (500.00 ⁇ L), and stirred at room temperature overnight.
  • Methyl 2,2-dimethyl-6-nitrobenzo[d][1,3]dioxazole-5-carboxylate 16c (500mg, 1.97mmol) and 10% palladium on carbon catalyst (2.10mg, 19.75 ⁇ mol) was sequentially added to ethyl acetate (2 mL), the hydrogen was replaced three times, and the reaction was stirred at room temperature for 3 hours. After the reaction was complete, filter and concentrate to obtain the crude product 6-amino-2,2-dimethylbenzo[d][1,3]dioxazole-5-carboxylic acid methyl ester 16d (420mg), yield 95.28% .
  • 6-Amino-2,2-dimethylbenzo[d][1,3]dioxazole-5-carboxylic acid methyl ester 16d (440mg, 1.97mmol) and 4M hydrogen chloride in 1,4-dioxahexa
  • the ring solution 25 mL was sequentially added to acetonitrile (13 mL), heated to 100° C. and refluxed for 16 hours.
  • Test example 1 the test that the compound of the present invention blocks the combination of SOS1 and KRAS G12C protein
  • the following method is used to determine the ability of the compound of the present invention to block the interaction between SOS1 and KRAS G12C protein under in vitro conditions.
  • This method uses the KRAS-G12C/SOS1BINDING ASSAY KITS kit (Cat. No. 63ADK000CB16PEG) from Cisbio.
  • Kit instructions for detailed experimental operations, please refer to the kit instructions.
  • the experimental procedure is briefly described as follows: use diluent buffer (Product No. 62DLBDDF) to prepare Tag1-SOS1 and Tag2-KRAS-G12C proteins at a working solution concentration of 5X for later use.
  • the test compound was dissolved in DMSO to prepare a 10 mM stock solution, and then diluted with diluent buffer for use.
  • Table 1 IC 50 data of compounds of the present invention blocking the interaction between SOS1 and KRAS G12C protein
  • Test example 2 mouse pharmacokinetic research of compound of the present invention
  • mice male, 20-24 g, were purchased from Weitong Lihua Experimental Animal Technology Co., Ltd.
  • mice 18 BALB/c mice, intravenous injection group (9 mice/group) and oral gavage group (9 mice/group) of the compound to be tested, intravenous injection administration and oral gavage administration respectively after fasting overnight, administration Eat after 4 hours.
  • LC-MS/MS was used to determine the content of the compound to be tested in mouse plasma after intravenous injection and intragastric administration of the compound.
  • mice pharmacokinetic parameters of the compounds of the present invention are shown in the table below.
  • Compound Example 3 of the present invention has good pharmacokinetic absorption, high bioavailability, and good pharmacokinetic properties.

Abstract

本发明涉及一种取代的三环类衍生物、其制备方法及含有该衍生物的药物组合物在医药上的应用。具体而言,本发明涉及一种通式(I)所示的取代的三环类衍生物、其制备方法及其可药用的盐,以及它们作为治疗剂,特别是SOS1抑制剂的用途,其中通式(I)中的各取代基的定义与说明书中的定义相同。

Description

三环类衍生物及其制备方法和用途 技术领域
本发明涉及一种取代的三环类衍生物、其制备方法及含有该衍生物的药物组合物以及其作为治疗剂特别是作为SOS1抑制剂的用途。
背景技术
RAS基因广泛存在于各种真核生物如哺乳类、果蝇、真菌、线虫及酵母中,在各种生命体系中具有重要的生理功能,哺乳动物的RAS基因家族有三个成员,分别是H-RAS、K-RAS和N-RAS,各种RAS基因具有相似的结构,均由四个外显子组成,分布于全长约30kb的DNA上。它们的编码产物为相对分子质量21kDa的单体球状蛋白质。RAS蛋白的激活和非激活状态对细胞生长、分化、增殖和凋亡等生命进程有着重大的影响。该蛋白是一种膜结合的鸟嘌呤核苷酸结合蛋白,具有弱的GTP酶活性,在正常生理活动中,通过GTP酶活化蛋白(GAPs)和鸟嘌呤核苷酸交换因子(GEFs)调节RAS的活性状态,当RAS蛋白与GTP结合形成RAS-GTP时为激活状态,GTP酶活化蛋白可以使RAS-GTP去磷酸化转变成RAS-GDP,进而失活;失活的RAS-GDP在鸟嘌呤核苷酸交换因子作用下又转变成有活性的RAS-GTP,从而激活RAF/MER/ERK和PI3K/AKT/mTOR等一系列下游通路。
RAS基因同时也与人类的各种疾病密切相关,尤其在癌症方面,RAS是经常出现突变的致癌基因,其中KRAS亚型基因突变占到RAS基因突变总数的86%,约90%的胰腺癌,30%-40%的结肠癌、15-20%的肺癌中均出现不同程度的KRAS基因突变。鉴于KRAS基因突变的普遍性,该靶点一直是药物研发工作者关注的方向。从直接作用于KRAS-G12C靶点的AMG-510临床结果的公布开始,KRAS抑制剂的研究在国内外掀起一股热潮。
SOS(Son of sevenless homolog)蛋白最初是在果蝇研究中被发现,是由SOS基因编码的鸟苷释放蛋白。人类有2种SOS同源体,hSOS1和hSOS2,二者都是鸟嘌呤核苷酸交换因子家族的成员,具有70%的同源性,尽管它们在结构和序列上高度相似,但各自的生理功能存在一定差异。hSOS1蛋白大小为150kDa,是由1333个氨基酸组成的多结构蛋白域,包含N端蛋白结构域(HD)、多个同源结构域、螺旋接头(HL)、RAS交换序列(REM)和富含脯氨酸的C端结构域。hSOS1上有2个与RAS蛋白的结合位点,分别是催化位点和变构位点,催化位点结合RAS-GDP复合物上的RAS蛋白促进鸟嘌呤核苷酸交换,变构位点结 合RAS-GTP复合物上的RAS蛋白进一步增强催化作用,进而参与并激活RAS家族蛋白的信号转导。有研究表明,对SOS1的抑制不仅能够对野生型KRAS细胞中的RAS-RAF-MEK-ERK通路产生完全抑制,在突变的KRAS细胞系中,也能导致磷酸-ERK的活性降低50%。因此,对SOS1的抑制也能够降低RAS的活性,从而治疗由RAS基因突变或RAS蛋白过度激活导致的各种癌症,包括胰腺癌、结直肠癌、非小细胞肺癌等。
市场上还未有选择性地针对于SOS1的药物上市,但已经公布了一系列相关专利,其中包括BI公司的WO2018115380A1,WO2019122129A1,Bayer公司的WO2019201848A1,Revolution公司的WO2020180768A1,WO2020180770A1等,目前处于临床试验阶段的药物为BI-1701963。但这些对于抗肿瘤研究是远远不够的,仍有必要研究和开发新的选择性SOS1激酶抑制剂,来解决未满足的医疗需求。
发明内容
针对上述的技术问题,本发明提供一种通式(I)所示的一种取代的三环类化合物或其立体异构体、互变异构体或其可药用的盐:
其中:
环A选自C6-C10芳基、5-10元杂芳基、5-8元杂环基或9-10元双环杂环基;
环B选自4-11元杂环、C6-C10芳环或5-10元芳杂环;
R1相同或不同,各自独立地选自氢原子、烷基、卤素、硝基、氰基、环烷基、杂环基、芳基、杂芳基、=O、-OR3、-C(O)R3、-C(O)OR3、-NHC(O)R3、-NHC(O)OR3、-NR4R5、-C(O)NR4R5、-CH2NHC(O)OR3、-CH2NR4R5或-S(O)rR3,其中所述的烷基、环烷基、杂环基、芳基或杂芳基任选进一步被一个或多个烷基、卤素、硝基、氰基、环烷基、杂环基、芳基、杂芳基、=O、-OR3、-C(O)R3、-C(O)OR3、-NHC(O)R3、-NHC(O)OR3、-NR4R5、-C(O)NR4R5、-CH2NHC(O)OR3、-CH2NR4R5或-S(O)rR3的取代基所取;
R2相同或不同,各自独立地选自氢原子、烷基、烯基、卤素、硝基、氰基、环烷基、杂环基、芳基、杂芳基、=O、-OR3、-C(O)R3、-C(O)OR3、-NHC(O)R3、-NHC(O)OR3、-NR4R5、-C(O)NR4R5、-CH2NHC(O)OR3、-CH2NR4R5或-S(O)rR3,其中所述的烷基、烯基、环烷基、杂环基、芳基或杂芳基任选进一步被一个或多个烷基、卤素、硝基、氰基、环烷基、杂环基、芳基、杂芳基、=O、-OR3、-C(O)R3、-C(O)OR3、-NHC(O)R3、-NHC(O)OR3、-NR4R5、-C(O)NR4R5、-CH2NHC(O)OR3、-CH2NR4R5或-S(O)rR3的取代基所取;
X选自N或CRa;X优选为CRa
Ra选自氢原子、烷基、卤素或环烷基;
R3各自独立地选自氢原子、烷基、环烷基、杂环基、芳基或杂芳基,其中所述的烷基、环烷基、杂环基、芳基或杂芳基任选进一步被一个或多个选自氘原子、羟基、卤素、硝基、氰基、烷基、烷氧基、卤代烷基、卤代烷氧基、环烷基、杂环基、芳基、杂芳基、=O、-C(O)R6、-C(O)OR6、-OC(O)R6、-NR7R8、-C(O)NR7R8、-SO2NR7R8或-NR7C(O)R8的取代基所取代;
R4和R5各自独立地选自氢原子、羟基、卤素、烷基、烷氧基、环烷基、杂环基、芳基或杂芳基,其中所述的烷基、烷氧基、环烷基、杂环基、芳基或杂芳基任选进一步被一个或多个选自羟基、卤素、硝基、氰基、烷基、烷氧基、卤代烷基、卤代烷氧基、羟基烷基、环烷基、杂环基、芳基、杂芳基、=O、-C(O)R6、-C(O)OR6、-OC(O)R6、-NR7R8、-C(O)NR7R8、-SO2NR7R8或-NR7C(O)R8的取代基所取代;
或者,R4和R5与它们相连接的原子一起形成一个4~8元杂环基,其中4~8元杂环基内含有一个或多个N、O或S(O)r,并且所述的4~8元杂环基任选进一步被一个或多个选自羟基、卤素、硝基、氰基、烷基、烷氧基、卤代烷基、卤代烷氧基、羟基烷基、环烷基、杂环基、芳基、杂芳基、=O、-C(O)R6、-C(O)OR6、-OC(O)R6、-NR7R8、-C(O)NR7R8、-SO2NR7R8或-NR7C(O)R8的取代基所取代;
R6、R7和R8各自独立地选自氢原子、烷基、氨基、环烷基、杂环基、芳基或杂芳基,其中所述的烷基、环烷基、杂环基、芳基或杂芳基任选进一步被一个或多个选自羟基、卤素、硝基、氨基、氰基、烷基、烷氧基、环烷基、杂环基、芳基、杂芳基、羧基或羧酸酯基的取代基所取代;
r各自独立地选自0、1或2;
m选自1、2、3或4;
n选自1、2、3或4。
本发明的优选方案,一种通式(I)所示的化合物或其立体异构体、互变异构体或其可药用的盐,其为通式(II)所示的化合物或其立体异构体、互变异构体或其可药用的盐:
其中:环B、R1、R2、m和n的定义如通式(I)中所述。
本发明的优选方案,一种通式(I)或(II)所示的化合物或其立体异构体、互变异构体或其可药用的盐,其中R1选自C1-C4烷基、卤素、C1-C4卤代烷基或氨基;优选为三氟甲基、二氟甲基、氨基或氟原子。
本发明的优选方案,一种通式(I)或(II)所示的化合物或其立体异构体、互变异构体或其可药用的盐,其中R2选自卤素、C1-C4烷基、C1-C4烯基、C1-C4卤代烷基、C5-C6芳基、-C(O)R3或=O;其中所述烷基优选为甲基、乙基、丙基或异丙基;其中所述烯基优选为烯丙基;其中所述芳基优选为苯基;
R3选自C1-C4烷基,优选为甲基。
本发明的优选方案,一种通式(I)或(II)所示的化合物或其立体异构体、互变异构体或其可药用的盐,其中环B选自5-6元杂环或5-6元芳杂环;环B优选为以下结构:
本发明的优选方案,一种通式(I)或(II)所示的化合物或其立体异构体、互变异构体或其 可药用的盐,其中选自以下具体结构:
在本发明的优选方案中,通式(I)所述的化合物选自:


或其立体异构体、互变异构体或其可药用的盐。
注:如果在画出的结构和给出的该结构的名称之间有差异,则画出的结构将给予更大的权 重。
更进一步,本发明提供一种药物组合物,所述的药物组合物含有有效剂量的通式(I)或(II)所述的化合物或其立体异构体、互变异构体或其可药用的盐,及可药用的载体、赋形剂或它们的组合。
本发明提供一种通式(I)或(II)所述的化合物或其立体异构体、互变异构体或其可药用的盐,或其药物组合物在制备SOS1抑制剂中的用途。
本发明还提供一种通式(I)或(II)所述的化合物或其立体异构体、互变异构体或其可药用的盐,或其药物组合物在制备治疗由SOS1介导的疾病的药物中的用途,其中所述的由SOS1介导的疾病优选为RAS家族蛋白信号传导通路依赖性相关的癌症、SOS1突变导致的癌症或SOS1突变导致的遗传性疾病;其中所述的由SOS1介导的疾病优选为肺癌、胰腺癌、结肠癌、膀胱癌、前列腺癌、胆管癌、胃癌、弥漫性大B细胞淋巴瘤、神经纤维瘤、努南综合征、心面皮肤综合征、Ⅰ型遗传性齿龈纤维瘤、胚胎性横纹肌肉瘤、塞尔托利细胞睾丸瘤或皮肤颗粒细胞瘤。
本发明进一步提供一种通式(I)或(II)所述的化合物或其立体异构体、互变异构体或其可药用的盐,或其药物组合物在制备治疗RAS家族蛋白信号传导通路依赖性相关的癌症、SOS1突变导致的癌症或SOS1突变导致的遗传性疾病的药物中的用途。
本发明提供一种通式(I)或(II)所述的化合物或其立体异构体、互变异构体或其可药用的盐,或其药物组合物在制备治疗肺癌、胰腺癌、结肠癌、膀胱癌、前列腺癌、胆管癌、胃癌、弥漫性大B细胞淋巴瘤、神经纤维瘤、努南综合征、心面皮肤综合征、Ⅰ型遗传性齿龈纤维瘤、胚胎性横纹肌肉瘤、塞尔托利细胞睾丸瘤或皮肤颗粒细胞瘤的药物中的用途。
发明的详细说明
除非有相反陈述,否则本发明在说明书和权利要求书中所使用的部分术语定义如下:
“烷基”当作一基团或一基团的一部分时是指包括C1-C20直链或者带有支链的脂肪烃基团。优选为C1-C10烷基,更优选为C1-C6烷基。烷基基团的实施例包括但不限于甲基、乙基、正丙基、异丙基、正丁基、异丁基、叔丁基、仲丁基、正戊基、1,1-二甲基丙基、1,2-二甲基丙基、2,2-二甲基丙基、1-乙基丙基、2-甲基丁基、3-甲基丁基、正己基、1-乙基-2-甲基丙基、1,1,2-三甲基丙基、1,1-二甲基丁基、1,2-二甲基丁基、2,2-二甲基丁基、1,3-二甲基丁基、2-乙基丁基、2-甲基戊基、3-甲基戊基、4-甲基戊基、2,3-二甲基丁基等。烷基可以是取代或未取代的。
“环烷基”是指饱和或部分饱和的单环、稠环、桥环和螺环的碳环。优选为C3-C12环烷基,更优选为C3-C8环烷基,最优选为C3-C6环烷基。单环环烷基的实施例包括但不限于环丙基、环丁基、环戊基、环戊烯基、环己基、环己烯基、环己二烯基、环庚基、环庚三烯基、环辛基等,优选环丙基、环己烯基。环烷基可以是取代或未取代的。
“螺环烷基”指5至18元,两个或两个以上环状结构,且单环之间彼此共用一个碳原子(称螺原子)的多环基团,环内可以含有1个或多个双键,但没有一个环具有完全共轭的π电子的芳香系统。优选为6至14元,更优选为7至10元。根据环与环之间共用螺原子的数目将螺环烷基分为单螺、双螺或多螺环烷基,优选为单螺和双螺环烷基,优选为4元/5元、4元/6元、5元/5元或5元/6元。“螺环烷基”的非限制性实施例包括但不限于:螺[4.5]癸基、螺[4.4]壬基、螺[3.5]壬基、螺[2.4]庚基。
“稠环烷基”指5至18元,含有两个或两个以上环状结构彼此共用一对碳原子的全碳多环基团,一个或多个环可以含有一个或多个双键,但没有一个环具有完全共轭的π电子的芳香系统,优选为6至12元,更优选为7至10元。根据组成环的数目可以分为双环、三环、四环或多环稠环烷基,优选为双环或三环,更优选为5元/5元或5元/6元双环烷基。“稠环烷基”的非限制性实施例包括但不限于:二环[3.1.0]己基、二环[3.2.0]庚-1-烯基、二环[3.2.0]庚基、十氢化萘基或十四氢菲基。
“桥环烷基”指5至18元,含有两个或两个以上环状结构,彼此共用两个不直接相连接碳原子的全碳多环基团,一个或多个环可以含有一个或多个双键,但没有一个环具有完全共轭的π电子的芳香系统,优选为6至12元,更优选为7至10元。根据组成环的数目可以分为双环、三环、四环或多环桥环烷基,优选为双环、三环或四环,更优选为双环或三环。“桥环烷基”的非限制性实施例包括但不限于:(1s,4s)-二环[2.2.1]庚基、二环[3.2.1]辛基、(1s,5s)-二环[3.3.1]壬基、二环[2.2.2]辛基、(1r,5r)-二环[3.3.2]癸基。
“烯基”指由至少两个碳原子和至少一个碳-碳双键组成的如上定义的烷基,代表性实例包括但不限于乙烯基、1-丙烯基、2-丙烯基、1-,2-或3-丁烯基等。烯基可以是任选取代的或未取代的。
“杂环基”、“杂环”或“杂环的”在本申请中可交换使用,都是指非芳香性杂环基,其中一个或多个成环的原子是杂原子,如氧、氮、硫原子等,包括单环、多环、稠环、桥环和螺环。优选具有5至7元单环或7至10元双环或三环,其可以包含1,2或3个选自氮、氧和/或硫中的原子。
“单环杂环基”的实例包括但不限于吗啉基、氧杂环丁烷基、硫代吗啉基、四氢呋喃基、四氢吡喃基、1,1-二氧代-硫代吗啉基、哌啶基、2-氧代-哌啶基、吡咯烷基、2-氧代-吡咯烷基、哌嗪-2-酮基、哌嗪基、六氢嘧啶基、
单环杂环基可以是取代或未取代的。
“螺杂环基”指5至18元,两个或两个以上环状结构,且单环之间彼此共用一个原子的多环基团,环内可以含有1个或多个双键,但没有一个环具有完全共轭的π电子的芳香系统,其中一个或多个环原子选自氮、氧或S(O)n(其中n选自0、1或2)的杂原子,其余环原子为碳。优选为6至14元,更优选为7至10元。根据环与环之间共用螺原子的数目将螺环烷基分为单螺杂环基、双螺杂环基或多螺杂环基,优选为单螺杂环基和双螺杂环基。更优选为4元/4元、4元/5元、4元/6元、5元/5元或5元/6元单螺杂环基。“螺杂环基”的非限制性实施例包括但不限于:1,7-二氧杂螺[4.5]癸基、2-氧杂-7-氮杂螺[4.4]壬基、7-氧杂螺[3.5]壬基、5-氧杂螺[2.4]庚基、
螺杂环基可以是取代或未取代的。
“稠杂环基”指含有两个或两个以上环状结构彼此共用一对原子的多环基团,一个或多个环可以含有一个或多个双键,但没有一个环具有完全共轭的π电子的芳香系统,其中一个或多个环原子选自氮、氧或S(O)n(其中n选自0、1或2)的杂原子,其余环原子为碳。优选为6至14元,更优选为7至10元。根据组成环的数目可以分为双环、三环、四环或多环稠杂环基,优选为双环或三环,更优选为5元/5元或5元/6元双环稠杂环基。“稠杂环基”的非限制性实施例包括但不限于:八氢吡咯并[3,4-c]吡咯基、八氢-1H-异吲哚基,3-氮杂二环[3.1.0]己基,八氢苯并[b][1,4]二噁英(dioxine)。
“桥杂环基”指5至14元,5至18元,含有两个或两个以上环状结构,彼此共用两个不直接相连接的原子的多环基团,一个或多个环可以含有一个或多个双键,但没有一个环 具有完全共轭的π电子的芳香系统,其中一个或多个环原子选自氮、氧或S(O)n(其中n选自0、1或2)的杂原子,其余环原子为碳。优选为6至14元,更优选为7至10元。根据组成环的数目可以分为双环、三环、四环或多环桥杂环基,优选为双环、三环或四环,更优选为双环或三环。“桥杂环基”的非限制性实施例包括但不限于:2-氮杂二环[2.2.1]庚基,2-氮杂二环[2.2.2]辛基、2-氮杂二环[3.3.2]癸基、
桥杂环基可以是取代或未取代的。
“芳基”是指含有一个或者两个环的碳环芳香系统,其中所述环可以以稠合的方式连接在一起。术语“芳基”包括单环或双环的芳基,比如苯基、萘基、四氢萘基的芳香基团。优选芳基为C6-C10芳基,更优选芳基为苯基和萘基,最优选为苯基。芳基可以是取代或未取代的。
“杂芳基”是指芳香族5至6元单环或8至10元双环,其可以包含1至4个选自氮、氧和/或硫中的原子。“杂芳基”的实施例包括但不限于呋喃基,吡啶基,2-氧代-1,2-二氢吡啶基,哒嗪基,嘧啶基,吡嗪基,噻吩基,异噁唑基,噁唑基,噁二唑基,咪唑基,吡咯基,吡唑基,三唑基,四氮唑基,噻唑基,异噻唑基,1,2,3-噻二唑基,苯并间二氧杂环戊烯基,苯并噻吩基、苯并咪唑基,吲哚基,异吲哚基,1,3-二氧代-异吲哚基,喹啉基,吲唑基,苯并异噻唑基,苯并噁唑基、苯并异噁唑基、吡啶酮基、

杂芳基可以是取代或未取代的。
“烷氧基”是指(烷基-O-)的基团。其中,烷基见本文有关定义。C1-C6的烷氧基为优先选择。其实例包括,但不限于:甲氧基、乙氧基、正丙氧基、异丙氧基、正丁氧基、异丁氧基、叔丁氧基等。
“C1-C6羟基烷基”指羟基取代的C1-C6烷基。
“C1-C3含卤烷基”指卤素取代的C1-C3烷基。
“C1-C6含卤烷基”指卤素取代的C1-C6烷基。
“羟基”指-OH基团。
“卤素”是指氟、氯、溴和碘。
“氨基”指-NH2
“氰基”指-CN。
“硝基”指-NO2
“苄基”指-CH2-苯基。
“DMSO”指二甲基亚砜。
“BOP”指苯并三氮唑-1-基氧基三(二甲氨基)磷鎓六氟磷酸盐。
“DBU”指1,8-二氮双环[5.4.0]十一-7-烯。
“DCC”指二环己基碳二亚胺。
“EDCI”指1-(3-二甲基氨基丙基)-3-乙基碳二亚胺。
“PdCl2(dppf)”指[1,1'-双(二苯基膦基)二茂铁]二氯化钯。
“RuPhos-Pd-G3”指甲磺酸(2-二环己基膦基-2',6'-二异丙氧基-1,1'-联苯基)(2-氨基-1,1'-联苯-2-基)钯(II)。
“Pd(PPh3)2Cl2”指双(三苯基膦)二氯化钯。
“Pd(dba)3”指三(二亚苄基丙酮)二钯。
“XantPhos”指4,5-双二苯基膦-9,9-二甲基氧杂蒽。
“HATU”指2-(7-氮杂苯并三氮唑)-N,N,N',N'-四甲基脲六氟磷酸酯。
“9-BBN”指9-硼双环[3.3.1]壬烷。
“卡特缩合剂”指六氟磷酸苯并三唑-1-氧基三(二甲氨基)磷。
“离去基团(leaving group)”,或称离去基,在化学反应中从一较大分子中脱离的原子或官能基,是亲核取代反应与消除反应中应用的术语。在亲核取代反应中,被亲核试剂进攻的反应物称为底物(substrate),而从底物分子中带着一对电子断裂出去的原子或原子团称为离去基团。易接受电子、承受负电荷能力强的基团是好的离去基团。当离去基团共轭酸的pKa越小,离去基团越容易从其他分子中脱离。原因是因为当其共轭酸的pKa越小,相应离去基团不需和其他原子结合,以阴离子(或电中性离去基团)的形式存在的趋势也就增强。常见的离去基团包括但不限于卤素、甲磺酰基、-OTs或-OH。
“取代的”指基团中的一个或多个氢原子,优选为最多5个,更优选为1~3个氢原子彼此独立地被相应数目的取代基取代。不言而喻,取代基仅处在它们的可能的化学位置,本领域技术人员能够在不付出过多努力的情况下确定(通过实验或理论)可能或不可能的取代。例如,具有游离氢的氨基或羟基与具有不饱和(如烯属)键的碳原子结合时可能是不稳定的。
本说明书所述的“取代”或“取代的”,如无特别指出,均是指基团可被一个或多个取代基所取代。
“可药用的盐”是指上述化合物能保持原有生物活性并且适合于医药用途的某些盐类。通式(I)所表示的化合物的可药用的盐可以为金属盐、与合适的酸形成的胺盐。
“药物组合物”表示含有一种或多种本文所述化合物或其生理学上可药用的盐或前体药物与其他化学组分的混合物,以及其他组分例如生理学可药用的载体和赋形剂。药物组合物的目的是促进对生物体的给药,利于活性成分的吸收进而发挥生物活性。
本发明化合物的合成方法
为了完成本发明的目的,本发明采用如下技术方案:
本发明提供了一种通式(I)化合物或其立体异构体、互变异构体或其可药用的盐的制备方法,所述方法包括:
通式(IA)化合物与(IB)化合物在缩合剂的条件下,优选为卡特缩合剂、BOP缩合剂、DCC缩合剂、EDCI缩合剂和HATU缩合剂,发生缩合反应得到通式(I)化合物;当R1含有硝基时,可以进一步还原成氨基;
环A、环B、X、R1、R2、m和n的定义如通式(I)中所述。
本发明提供了一种通式(II)化合物或其立体异构体、互变异构体或其可药用的盐的制备方法,所述方法包括:
通式(IIA)化合物与(IIB)化合物在缩合剂的条件下,优选为卡特缩合剂、BOP缩合剂、DCC缩合剂、EDCI缩合剂或HATU缩合剂,发生缩合反应,得到通式(II)化合物;当R1含有硝基时,可以进一步还原成氨基;
环B、R1、R2、m和n的定义如通式(II)中所述。
具体实施方式
以下结合实施例用于进一步描述本发明,但这些实施例并非限制着本发明的范围。
实施例
实施例给出了式(I)所表示的代表性化合物的制备及相关结构鉴定数据。必须说明,下述实施例是用于说明本发明而不是对本发明的限制。1H NMR图谱是用Bruker仪器 (400MHz)测定而得,化学位移用ppm表示。使用四甲基硅烷内标准(0.00ppm)。1H NMR的表示方法:s=单峰,d=双重峰,t=三重峰,m=多重峰,br=变宽的,dd=双重峰的双重峰,dt=三重峰的双重峰。若提供偶合常数时,其单位为Hz。
质谱是用LC/MS仪测定得到,离子化方式可为ESI或APCI。
薄层层析硅胶板使用烟台黄海HSGF254或青岛GF254硅胶板,薄层色谱法(TLC)使用的硅胶板采用的规格是0.15mm~0.2mm,薄层层析分离纯化产品采用的规格是0.4mm~0.5mm。
柱层析一般使用烟台黄海硅胶200~300目硅胶为载体。
在下列实例中,除非另有指明,所有温度为摄氏温度,除非另有指明,各种起始原料和试剂来自市售或者是根据已知的方法合成,市售原料和试剂均不经进一步纯化直接使用,除非另有指明,市售厂家包括但不限于上海皓鸿生物医药科技有限公司,上海韶远试剂有限公司,上海毕得医药科技有限公司,萨恩化学技术(上海)有限公司和上海凌凯医药科技有限公司等。
CD3OD:氘代甲醇。
CDCl3:氘代氯仿。
DMSO-d6:氘代二甲基亚砜。
氮气氛是指反应瓶连接一个约1L容积的氮气气球。
实施例中无特殊说明,反应中的溶液是指水溶液。
对化合物进行纯化,采用硅胶柱层析洗脱剂体系和薄层色谱法;其中溶剂的体积比根据化合物的极性不同而不同,也可以加入少量的酸性或碱性试剂进行调节,如醋酸或三乙胺等。
实施例1
(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-2-甲基-7,8-二氢-[1,4]二噁英[2,3-g]喹唑啉-4-胺
(R)-N-(1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)-2-methyl-7,8-dihydro-[1,4]dioxino[2,3-g]quinazolin-4-amine

第一步
7-氨基-2,3-二氢苯并[b][1,4]二噁英-6-甲酸甲酯
methyl 7-amino-2,3-dihydrobenzo[b][1,4]dioxine-6-carboxylate
将7-硝基-2,3-二氢苯并[b][1,4]二噁英-6-甲酸甲酯1a(1.0g,4.18mmol)溶于甲醇(6mL)中,加入铁粉(2.33g,41.8mmol),加热至回流。反应完全后,冷却至室温。过滤,浓缩,加入水(10mL),用乙酸乙酯萃取(50mL×3),合并有机相,用饱和食盐水洗涤(30mL×2),无水硫酸钠干燥,过滤,减压浓缩,得到7-氨基-2,3-二氢苯并[b][1,4]二噁英-6-甲酸甲酯1b(0.809g),产率92.5%。
MS m/z(ESI):210.0[M+H]+
第二步
2-甲基-7,8-二氢-[1,4]二噁英[2,3-g]喹唑啉-4(3H)-酮
2-methyl-7,8-dihydro-[1,4]dioxino[2,3-g]quinazolin-4(3H)-one
将7-氨基-2,3-二氢苯并[b][1,4]二噁英-6-甲酸甲酯1b(200mg,956μmol)溶于乙腈(0.5mL),加入甲烷磺酸(598mg,6.22mmol),加热至100℃,反应72小时。反应完全后,减压浓缩,加入水(2mL),用1M氢氧化钠水溶液调节pH=9,析出固体,过滤,干燥得2-甲基-7,8-二氢-[1,4]二噁英[2,3-g]喹唑啉-4(3H)-酮1c(120mg),产率57.6%。
MS m/z(ESI):219.0[M+H]+
第三步
4-氯-2-甲基-7,8-二氢-[1,4]二噁英[2,3-g]喹唑啉
4-chloro-2-methyl-7,8-dihydro-[1,4]dioxino[2,3-g]quinazoline
将2-甲基-7,8-二氢-[1,4]二噁英[2,3-g]喹唑啉-4(3H)-酮1c(50mg,229.14μmol)溶于1,2-二氯乙烷(1mL),依次加入三乙胺(92.8mg,917μmol)和三氯氧磷(105mg,687μmol),加热至90℃,反应4小时。降至室温,加入乙酸乙酯(20mL)和水(20mL),有机相用水洗涤(20mL),无水硫酸钠干燥,过滤,减压浓缩,得到4-氯-2-甲基-7,8-二氢-[1,4]二噁英[2,3-g]喹唑啉1d(52mg),产率95.9%。
MS m/z(ESI):236.9[M+H]+
第四步
(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-2-甲基-7,8-二氢-[1,4]二噁英[2,3-g]喹唑啉-4-胺
(R)-N-(1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)-2-methyl-7,8-dihydro-[1,4]dioxino[2,3-g]quinazolin-4-amine
将4-氯-2-甲基-7,8-二氢-[1,4]二噁英[2,3-g]喹唑啉1d(50mg,211μmol)溶于N,N-二甲基甲酰胺(1mL),加入(R)-1-(3-(二氟甲基)-2-氟苯基)乙烷-1-胺1e(47.9mg,253μmol,根据专利WO 2019122129自制而得)和碳酸钾(29.2mg,211μmol),加热至100℃,搅拌过夜。反应完全后,减压浓缩,制备分离(色谱柱:AKZONOBEL Kromasil,250×21.2mm,5μm,流动相A:0.05%三氟乙酸水溶液,流动相B:乙腈;20mL/min),得到(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-2-甲基-7,8-二氢-[1,4]二噁英[2,3-g]喹唑啉-4-胺1(25.9mg),产率30.8%。MS m/z(ESI):389.9[M+1]+
1H NMR(400MHz,DMSO-d6)δ9.72(s,1H),8.21(s,1H),7.72(t,J=7.5Hz,1H),7.56(t,J=7.1Hz,1H),7.35(t,J=8.0Hz,1H),7.23(t,J=54.4Hz,1H),7.12(d,J=3.6Hz,1H),5.87-5.94(m,1H),4.36-4.51(m,4H),2.52(s,3H),1.66(d,J=7.0Hz,3H).
实施例2
(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-6-甲基-[1,3]二噁唑[4,5-g]喹唑啉-8-胺
(R)-N-(1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)-6-methyl-[1,3]dioxolo[4,5-g]quinazolin-8-amine
第一步
6-硝基苯并[d][1,3]二噁唑-5-腈
6-nitrobenzo[d][1,3]dioxole-5-carbonitrile
将苯并[d][1,3]二噁唑-5-腈2a(500mg,3.40mmol)溶于乙酸(5mL),缓慢加入发烟硝酸(7.20g,114.3mmol),室温下反应过夜。反应完全后,加入乙酸乙酯(20mL)和水(20mL), 水相用乙酸乙酯萃取(10mL×2),合并有机相,用无水硫酸钠干燥,减压浓缩,得到6-硝基苯并[d][1,3]二噁唑-5-腈2b(306mg),产率46.9%。
MS m/z(ESI):192.9[M+H]+
第二步
6-硝基苯并[d][1,3]二噁唑-5-甲酰胺
6-nitrobenzo[d][1,3]dioxole-5-carboxamide
将6-硝基苯并[d][1,3]二噁唑-5-腈2b(287mg,1.49mmol)溶于二甲亚砜(3mL),加入氢氧化钾(168mg,3.00mmol),缓慢滴加双氧水(30%,2mL),滴加完毕后升至室温,搅拌反应30分钟。向反应液中加入水(30mL),析出白色固体,过滤,用水洗涤滤饼后真空干燥,得到6-硝基苯并[d][1,3]二噁唑-5-甲酰胺2c(297mg),产率94.6%。
MS m/z(ESI):211.0[M+H]+
第三步
6-氨基苯并[d][1,3]二噁唑-5-甲酰胺
6-aminobenzo[d][1,3]dioxole-5-carboxamide
将6-硝基苯并[d][1,3]二噁唑-5-甲酰胺2c(130mg,619μmol)溶解于乙酸乙酯(0.5mL),加入钯碳(10%,75.1mg),置换氢气,在室温下反应3小时。过滤,减压浓缩,得到6-氨基苯并[d][1,3]二噁唑-5-甲酰胺2d(101mg),产率90.6%。
MS m/z(ESI):180.9[M+H]+
第四步
6-甲基-[1,3]二噁唑[4,5-g]喹唑啉-8(7H)-酮
6-methyl-[1,3]dioxolo[4,5-g]quinazolin-8(7H)-one
将6-氨基苯并[d][1,3]二噁唑-5-甲酰胺2d(50mg,278μmol)和三乙氧基甲烷(123mg,833μmol)溶解于乙醇(1mL),加热至80℃,反应过夜。浓缩得到6-甲基-[1,3]二噁唑[4,5-g]喹唑啉-8(7H)-酮2e(50mg),产率88.2%。
MS m/z(ESI):205.0[M+H]+
第五步
(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-6-甲基-[1,3]二噁唑[4,5-g]喹唑啉-8-胺
(R)-N-(1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)-6-methyl-[1,3]dioxolo[4,5-g]quinazolin-8-amine
室温下,将6-甲基-[1,3]二噁唑[4,5-g]喹唑啉-8(7H)-酮2e(60mg,294μmol)、(R)-1-(3-(二氟甲基)-2-氟苯基)乙烷-1-胺1e(83.4mg,441μmol)、卡特缩合剂(169mg,382μmol)和DBU(67.10mg,440.78μmol)溶解于乙腈(2mL)中,室温搅拌反应过夜。反应完全后,减压浓缩,得到的残留物经制备液相分离纯化(色谱柱:AKZONOBEL Kromasil,250×21.2mm,5μm,流动相A:0.05%三氟乙酸水溶液,流动相B:乙腈;20mL/min),得到(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-6-甲基-[1,3]二噁唑[4,5-g]喹唑啉-8-胺2(1.3mg),产率1.2%。
MS m/z(ESI):375.9[M+H]+
1H NMR(400MHz,DMSO-d6)δ7.99(d,J=7.4Hz,1H),7.87(s,1H),7.65(t,J=7.5Hz,1H),7.48(t,J=7.2Hz,1H),7.27(t,J=7.8Hz,1H),7.22(s,J=54.4Hz,1H),6.99(s,1H),6.16(d,J=6.6Hz,2H),5.72-5.79(m,1H),2.29(s,3H),1.57(d,J=7.1Hz,3H).
实施例3
(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2,6-二甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮
(R)-4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-2,6-dimethyl-6H-[1,4]oxazino[3,2-g]quinazolin-7(8H)-one
第一步
3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯
methyl 3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylate
将3-氨基-4-羟基苯甲酸甲酯3a(1g,5.98mmol)和N-苄基-N,N-二乙基乙基氯化铵(5.45g,23.9mmol)溶解于氯仿(30mL),加入碳酸氢钠(4.02g,47.9mmol),冰水浴冷却,滴加2-氯乙酰氯(810.78mg,7.18mmol),滴加完全后,升温至100℃,反应16小时。减压浓缩,加入水(30mL),析出固体,过滤,干燥,得到3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯3b(1.20g),产率96.8%。
MS m/z(ESI):208.1[M+H]+
第二步
7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯
methyl 7-nitro-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylate
冰浴下,将3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯3b(400mg,1.93mmol)溶解于醋酸(10mL),缓慢滴加发烟硝酸(12.2g,193mmol,8.45mL),室温下搅拌16小时。加入乙酸乙酯(30mL)和水(30mL),水相用乙酸乙酯(30mL×3)萃取,合并有机相,用无水硫酸钠干燥,减压浓缩,得到7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯3c(162mg),产率33.3%。
MS m/z(ESI):252.9[M+H]+
第三步
4-甲基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯
methyl 4-methyl-7-nitro-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylate
将7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯3c(1g,3.97mmol)溶解于N,N-二甲基甲酰胺(2mL)中,加入碳酸钾(548mg,3.97mmol),加入碘甲烷(28.1g,198mmol),室温反应过夜。加入乙酸乙酯(30mL)和水(30mL),水相用乙酸乙酯萃取(30mL×3),合并有机相,用无水硫酸钠干燥,减压浓缩,得到4-甲基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯3d(1.04g),产率98.7%。
MS m/z(ESI):266.9[M+H]+
第四步
4-甲基-7-氨基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯
methyl 7-amino-4-methyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylate
将4-甲基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯3d(1.04g,3.91mmol)、铁粉(2.19g,39.1mmol)、氯化铵(1.05g,19.57mmol)和水(2mL)、甲醇(6mL)混合,加热至90℃,反应16小时。过滤,浓缩,加入乙酸乙酯(20mL),过滤,干燥,减压浓缩,得到4-甲基-7-氨基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯3e(880mg),产率95.2%。
MS m/z(ESI):236.9[M+H]+
第五步
2,6-二甲基-3,6-二氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4,7(8H)-二酮
2,6-dimethyl-3,6-dihydro-4H-[1,4]oxazino[3,2-g]quinazoline-4,7(8H)-dione
将4-甲基-7-氨基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯3e(500mg,2.12mmol)和甲烷磺酸(1.32g,13.8mmol)溶解于乙腈(15mL),密封后加热至100℃,反应72小时。反应结束后,减压浓缩,得到的残留物用硅胶柱层析进一步分离纯化(洗脱剂:A体系),得到2,6-二甲基-3,6-二氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4,7(8H)-二酮3f(213mg),产率41.0%。MS m/z(ESI):245.9[M+H]+
第六步
(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2,6-二甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)- 酮
(R)-4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-2,6-dimethyl-6H-[1,4]oxazino[3,2-g]quinazolin-7(8H)-one
将2,6-二甲基-3,6-二氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4,7(8H)-二酮3f(50mg,204μmol)、(R)-1-(3-(二氟甲基)-2-氟苯基)乙烷-1-胺1e(57.9mg,306μmol)、六氟磷酸苯并三唑-1-氧基三(二甲氨基)磷(117mg,265μmol)和1,8-二氮杂双环[5.4.0]十一碳-7-烯(46.6mg,306μmol)与乙腈(1mL)混合,室温下搅拌48小时。反应完全后,减压浓缩,制备液相分离(色谱柱:AKZONOBEL Kromasil,250×21.2mm,5μm,流动相A:0.05%三氟乙酸水溶液,流动相B:乙腈;20mL/min),得到(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2,6-二甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮3(1.5mg),产率1.78%。
MS m/z(ESI):416.7[M+H]+
1H NMR(400MHz,DMSO-d6)δ10.00(d,J=7.1Hz,1H),8.18(s,1H),7.75(t,J=7.6Hz,1H),7.58(t,J=7.2Hz,1H),7.37(t,J=7.6Hz,1H),7.24(t,J=54.0Hz,1H),7.20(s,1H),5.95(m,1H),4.93(s,2H),3.44(s,3H),2.54(s,3H),1.71(d,J=7.0Hz,3H).
实施例4
(R)-6-烯丙基-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2-甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮
(R)-6-allyl-4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-2-methyl-6H-[1,4]oxazino[3,2-g]quinazolin-7(8H)-one
第一步
4-烯丙基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯
methyl 4-allyl-7-nitro-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylate
将7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯3c(1g,3.97mmol)溶解于N,N-二甲基甲酰胺(2mL),加入碳酸钾(548mg,3.97mmol),加入3-氯丙-1-烯(607mg,7.93mmol7),室温搅拌过夜。加入乙酸乙酯(30mL)和水(30mL),分液,水相用乙酸乙酯萃取(30mL×3)。合并有机相,用无水硫酸钠干燥,减压浓缩,得到4-烯丙基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯4a(1.11g),产率96.0%。
MS m/z(ESI):292.9[M+H]+
第二步
4-烯丙基-7-氨基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯
methyl 4-allyl-7-amino-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxylate
将4-烯丙基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯4a(1.11g,3.80mmol)、铁粉(2.12g,38.0mmol)、氯化铵(1.02g,19.0mmol)和水(2mL)、甲醇(6mL)混合,加热至90℃,反应16小时。过滤,浓缩,加入乙酸乙酯(20mL),过滤,干燥,减压浓缩,得到4-烯丙基-7-氨基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯4b(901mg),产率90.5%。
MS m/z(ESI):263.1[M+H]+
第三步
6-烯丙基-2-甲基-3,6-二氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4,7(8H)-二酮
6-allyl-2-methyl-3,6-dihydro-4H-[1,4]oxazino[3,2-g]quinazoline-4,7(8H)-dione
将4-烯丙基-7-氨基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-甲酸甲酯4b(500mg,1.91mmol)和甲烷磺酸(1.19g,12.4mmol)溶解于乙腈(15mL),密封后加热至100℃,反应72小时。反应结束后,减压浓缩,得到的残留物用硅胶柱层析进一步分离纯化(洗脱剂:A体系),得到6-烯丙基-2-甲基-3,6-二氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4,7(8H)-二酮4c(234mg),产率45.3%。
MS m/z(ESI):271.9[M+H]+
第四步
(R)-6-烯丙基-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2-甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮
(R)-6-allyl-4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-2-methyl-6H-[1,4]oxazino[3,2-g]quinazolin-7(8H)-one
将6-烯丙基-2-甲基-3,6-二氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4,7(8H)-二酮4c(50mg,184μmol)、(R)-1-(3-(二氟甲基)-2-氟苯基)乙烷-1-胺1e(52.3mg,276μmol)、六氟磷酸苯并三唑-1-氧基三(二甲氨基)磷(106mg,240μmol)与乙腈(1mL)混合,加入1,8-二氮杂双环[5.4.0]十一碳-7-烯(42.1mg,276μmol),室温下搅拌过夜。反应完全后,减压浓缩,制备液相分离(色谱柱:AKZONOBEL Kromasil,250×21.2mm,5μm,流动相A:0.05%三氟乙酸水溶液,流 动相B:乙腈;20mL/min),得到(R)-6-烯丙基-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2-甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮4(2mg),产率:2.46%;同时,得到副产物4d(1.17mg)。
4
MS m/z(ESI):442.9[M+H]+
1H NMR(400MHz,DMSO-d6)δ8.27(d,J=7.3Hz,1H),7.94(s,1H),7.63(t,J=7.5Hz,1H),7.49(t,J=7.1Hz,1H),7.29(t,J=7.7Hz,1H),7.23(t,J=54.4Hz,1H),7.11(s,1H),5.92(ddt,J=15.7,10.1,5.0Hz,1H),5.76-5.83(m,1H),5.21(dd,J=20.2,13.8Hz,2H),4.82(s,2H),4.76(dd,J=8.4,5.1Hz,2H),2.30(s,3H),1.62(d,J=7.2Hz,3H).
4d
MS m/z(ESI):424.0[M+H]+
实施例5
(R)-4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-2-methyl-6H-[1,4]oxazino[3,2-g]quinazolin-7(8H)-one
(R)-4-((1-(3-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2-甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮
在氮气保护下,将(R)-6-烯丙基-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2-甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮4(40mg,90.41μmol)、三氯化铑(662.18μg,3.16μmol)和高碘酸钠(38.68mg,180.82μmol)溶于水(2mL)中,加热至100℃回流反应6小时。反应完全后,反应液通过制备液相色谱分离纯化(色谱柱:AKZONOBEL Kromasil,250×21.2mm,5μm,流动相A:0.05%三氟乙酸水溶液,流动相B:乙腈),得到(R)-4-((1-(3-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2-甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮5(1.66mg,4.13μmol),产率4.56%。
MS m/z(ESI):402.9[M+H]+
实施例6
(R)-4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-2-methyl-6-propyl-6H- [1,4]oxazino[3,2-g]quinazolin-7(8H)-one
(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2-甲基-6-丙基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮
将(R)-6-烯丙基-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2-甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮4(10mg,22.60μmol)、四三苯基膦钯(1.31mg,1.13μmol)、甲酸(2.08mg,45.20μmol)和三乙胺(5.72mg,56.51μmol)溶于1,4-二氧六环(1mL)中,室温下搅拌反应过夜。反应完全后,减压浓缩,得到的残留物用制备液相色谱分离纯化(色谱柱:AKZONOBEL Kromasil,250×21.2mm,5μm,流动相A:0.05%三氟乙酸水溶液,流动相B:乙腈),得到(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2-甲基-6-丙基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮6(1mg,2.25μmol),产率9.95%。
MS m/z(ESI):444.9[M+H]+
实施例7
(R)-4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-2,6-dimethyl-8,9-dihydropyrido[2,3-g]quinazolin-7(6H)-one
(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2,6-二甲基-8,9-二氢吡啶并[2,3-g]喹唑啉-7(6H)-酮

第一步
7-hydroxy-6-nitro-3,4-dihydroquinolin-2(1H)-one
7-羟基-6-硝基-3,4-二氢喹啉-2(1H)-酮
将浓硝酸(712.90mg,7.35mmol,65%purity)缓慢地滴加入7-羟基-3,4-二氢喹啉-2(1H)-酮7a(1.0g,6.13mmol)的乙酸(15mL)溶液中,室温条件下持续搅拌反应30分钟。反应完全后,冰浴下,缓慢加入水(50mL),搅拌,析出黄色固体,过滤,干燥,得到7-羟基-6-硝基-3,4-二氢喹啉-2(1H)-酮7b(600mg,2.88mmol),产率47.03%。
MS m/z(ESI):209.1[M+1]+
第二步
6-nitro-2-oxo-1,2,3,4-tetrahydroquinolin-7-yl trifluoromethanesulfonate
6-硝基-2-氧代-1,2,3,4-四氢喹啉-7-基三氟甲磺酸酯
将7-羟基-6-硝基-3,4-二氢喹啉-2(1H)-酮7b(500mg,2.40mmol)和吡啶(417.97mg,5.28mmol,425.68μL)依次加入到二氯甲烷(10mL)中,搅拌10分钟,冰浴下,将三氟甲磺酸酐(813.20mg,2.88mmol,484.91μL)缓慢滴加入反应液中,室温条件下持续搅拌反应12小时。加入二氯甲烷(55mL)和水(20mL),萃取,分液,水相用二氯甲烷萃取2次,合并有机相,减压浓缩,得到的残留物用硅胶柱层析(洗脱剂:B体系)分离纯化,得到6-硝基-2-氧代-1,2,3,4-四氢喹啉-7-基三氟甲磺酸酯7c(590mg,1.73mmol),产率72.20%。
MS m/z(ESI):340.8[M+1]+
第三步
6-nitro-2-oxo-1,2,3,4-tetrahydroquinoline-7-carbonitrile
6-硝基-2-氧代-1,2,3,4-四氢喹啉-7-腈
将6-硝基-2-氧代-1,2,3,4-四氢喹啉-7-基三氟甲磺酸酯7c(400mg,1.18mmol)、氰化锌(165.66mg,1.41mmol)和四(三苯基膦)钯(203.78mg,176.35μmol)依次加入到N,N-二甲基甲酰胺(8mL)中,置换氩气3次,加热至110℃持续搅拌反应24小时。向体系中加入乙酸乙酯(50mL)和水(25mL),萃取,分液,水相用乙酸乙酯萃取2次,合并有机相,以饱和氯化钠溶液(30mL×2)洗涤,以无水硫酸钠干燥,过滤,减压浓缩,得到的残留物用硅胶柱 层析(洗脱剂:B体系)分离纯化,得到6-硝基-2-氧代-1,2,3,4-四氢喹啉-7-腈7d(220mg,1.01mmol),产率86.16%。
MS m/z(ESI):218.0[M+1]+
第四步
1-methyl-6-nitro-2-oxo-1,2,3,4-tetrahydroquinoline-7-carbonitrile
1-甲基-6-硝基-2-氧代-1,2,3,4-四氢喹啉-7-腈
将6-硝基-2-氧代-1,2,3,4-四氢喹啉-7-腈7d(100mg,460.45μmol)、碘甲烷(130.71mg,920.89μmol)和碳酸钾(127.28mg,920.89μmol)依次加入到乙腈(1mL)中,室温条件下持续搅拌反应24小时。反应完全后直接减压浓缩,得到的残余物用硅胶柱层析(洗脱剂:A体系)分离纯化,得到1-甲基-6-硝基-2-氧代-1,2,3,4-四氢喹啉-7-腈7e(58mg,250.86μmol),产率54.48%。
MS m/z(ESI):231.9[M+1]+
第五步
1-methyl-6-nitro-2-oxo-1,2,3,4-tetrahydroquinoline-7-carboxamide
1-甲基-6-硝基-2-氧代-1,2,3,4-四氢喹啉-7-羧酰胺
将1-甲基-6-硝基-2-氧代-1,2,3,4-四氢喹啉-7-腈7e(50mg,216.26μmol)溶于甲醇(1mL)中,加入5M氢氧化钠溶液(1mL),缓慢滴加双氧水(0.5mL),室温条件下搅拌反应30分钟。加入1M稀盐酸中和至中性,乙酸乙酯(30mL×2)萃取,合并有机相,以饱和氯化钠溶液(30mL×2)洗涤,无水硫酸钠干燥,过滤,减压浓缩,得到粗品1-甲基-6-硝基-2-氧代-1,2,3,4-四氢喹啉-7-羧酰胺7f(45mg,180.56μmol),直接用于下一步反应。
MS m/z(ESI):250.1[M+1]+
第六步
6-amino-1-methyl-2-oxo-1,2,3,4-tetrahydroquinoline-7-carboxamide
6-氨基-1-甲基-2-氧代-1,2,3,4-四氢喹啉-7-羧酰胺
将1-甲基-6-硝基-2-氧代-1,2,3,4-四氢喹啉-7-羧酰胺7f(45mg,180.56μmol)和10%钯炭催化剂(3.84mg)依次加入到甲醇(1mL)中,置换氢气3次,室温条件下持续搅拌反应2小时。过滤,减压浓缩,得到粗品6-氨基-1-甲基-2-氧代-1,2,3,4-四氢喹啉-7-羧酰胺7g(35mg,159.64μmol),产率88.41%。
MS m/z(ESI):220.0[M+1]+
第七步
2,6-dimethyl-3,6,8,9-tetrahydropyrido[2,3-g]quinazoline-4,7-dione
2,6-二甲基-3,6,8,9-四氢吡啶并[2,3-g]喹唑啉-4,7-二酮
将6-氨基-1-甲基-2-氧代-1,2,3,4-四氢喹啉-7-羧酰胺7g(35mg,159.64μmol)、原乙酸三乙酯(77.70mg,478.93μmol)和乙酸(19.17mg,319.29μmol)依次加入到乙醇(2mL)中,加热至110℃持续搅拌反应6小时。减压浓缩,向所得残余物加入乙酸乙酯(30mL)和水(15 mL),萃取,分液,水相用乙酸乙酯萃取,合并有机相,用饱和氯化钠溶液(30mL×2)洗涤,以无水硫酸钠干燥,过滤,减压浓缩,得到粗品2,6-二甲基-3,6,8,9-四氢吡啶并[2,3-g]喹唑啉-4,7-二酮7h(38mg,156.21μmol),产率97.85%。
MS m/z(ESI):244.1[M+1]+
第八步
(R)-4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-2,6-dimethyl-8,9-dihydropyrido[2,3-g]quinazolin-7(6H)-one
(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2,6-二甲基-8,9-二氢吡啶并[2,3-g]喹唑啉-7(6H)-酮
将2,6-二甲基-3,6,8,9-四氢吡啶并[2,3-g]喹唑啉-4,7-二酮7h(38mg,156.21μmol)、(R)-1-(3-(二氟甲基)-2-氟苯基)乙烷-1-胺1e(70.49mg,312.42μmol)、卡特缩合剂(89.82mg,203.07μmol)和DBU(35.67mg,234.32μmol)依次加入到N,N-二甲基甲酰胺(1mL)中,室温条件下持续搅拌反应12小时。反应完全后加入乙酸乙酯(30mL)和水(10mL),萃取,分液,水相用乙酸乙酯萃取2次,合并有机相,以饱和氯化钠溶液(20mL×2)洗涤,以无水硫酸钠干燥,过滤,减压浓缩,得到的残余物经制备液相色谱分离纯化(色谱柱:AKZONOBEL Kromasil,250×21.2mm,5μm,流动相A:0.05%三氟乙酸水溶液,流动相B:乙腈),得到(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2,6-二甲基-8,9-二氢吡啶并[2,3-g]喹唑啉-7(6H)-酮7(5.3mg,12.75μmol),产率8.16%。
MS m/z(ESI):414.8[M+1]+
实施例8
(R)-4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-6-ethyl-2-methyl-6H-[1,4]oxazino[3,2-g]quinazolin-7(8H)-one
(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-6-乙基-2-甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮

第一步
3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonitrile
3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈
0℃下,向3-氨基-4-羟基苄腈8a(1g,7.46mmol)和碳酸氢钠(1.25g,14.91mmol)的四氢呋喃(10mL)溶液中缓慢滴加2-氯乙酰氯(1.26g,11.18mmol,889.45μL),升温到70℃反应16小时。反应完全后,减压浓缩,所得残留物用硅胶柱层析分离纯化(洗脱液:B体系),得到3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈8b(1.2g,6.89mmol),产率92.42%。
MS m/z(ESI):175.0[M+H]+
第二步
7-nitro-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonitrile
7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈
室温下,向3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈8b(600mg,3.45mmol)的乙酸(8mL)溶液中缓慢滴加发烟硝酸(21.70g,344.52mmol,15.07mL),室温搅拌反应过夜。反应完全后,加入乙酸乙酯(30mL)和水(30mL),萃取,分液,水相用乙酸乙酯(30mL×3)萃取,合并有机相,用无水硫酸钠干燥,过滤,减压浓缩,得到粗品7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈8c(540mg,2.46mmol),产率71.52%。
MS m/z(ESI):220.0[M+H]+
第三步
4-ethyl-7-nitro-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonitrile
4-乙基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈
将7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈8c(250mg,1.14mmol)、碘乙烷(1.78g,11.41mmol,912.37μL)和碳酸钾(315.33mg,2.28mmol)依次加入到N,N-二甲基甲酰胺(1mL)中,室温搅拌反应过夜。反应完全后,加入乙酸乙酯(30mL)和水(30mL),萃取,分液,水相用乙酸乙酯萃取(30mL×3),合并有机相,用无水硫酸钠干燥,过滤,减压浓缩,得到4-乙基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈8d(240mg,970.85μmol),产率85.11%。
MS m/z(ESI):248.1[M+H]+
第四步
4-ethyl-7-nitro-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxamide
4-乙基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺
将4-乙基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈8d(230mg,930.40μmol)和氢氧化钾(104.40mg,1.86mmol)依次加入二甲亚砜(2mL)中,缓慢滴加双氧水(2mL),室温下搅拌反应过夜。反应完全后,加入水(6mL),过滤,将滤饼真空干燥,得到4-乙基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺8e(120mg),产率24.31%。
MS m/z(ESI):266.0[M+H]+
第五步
7-amino-4-ethyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxamide
7-氨基-4-乙基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺
在氮气保护下,向4-乙基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺8e(120mg,452μmol)的乙酸乙酯(1.0mL)溶液中,加入10%钯炭催化剂(10mg),置换氢气三次,室温搅拌反应3小时。反应完全后,过滤,减压浓缩,得到7-氨基-4-乙基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺8f(80mg),产率75.3%。
MS m/z(ESI):235.9[M+H]+
第六步
6-ethyl-4-hydroxy-2-methyl-6H-[1,4]oxazino[3,2-g]quinazolin-7(8H)-one
6-乙基-4-羟基-2-甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮
将7-氨基-4-乙基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺8f(80mg,340.08μmol)、乙酸(40.84mg,680.16μmol,38.90μL)和原乙酸三乙酯(165.51mg,1.02mmol,195.25μL)依次加入到乙醇(1.97mL)中,加热至110℃回流反应16小时。反应完全后,抽滤,真空干燥,得到6-乙基-4-羟基-2-甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮8g(88mg),产率99.81%
LCMS:260.0[M+H]+
第七步
(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-6-乙基-2-甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮
将6-乙基-4-羟基-2-甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮8g(100mg,385.71μmol)、卡特缩合剂(221.77mg,501.43μmol)、DBU(176.16mg,1.16mmol,173.04μL)和(R)-1-(3-(二氟甲基)-2-氟苯基)乙烷-1-胺1e(72.97mg,385.71μmol)依次加入到N,N-二甲基甲酰胺(0.8mL)中,室温下搅拌反应16小时。反应完全后,浓缩,经制备液相色谱分离纯化(色谱柱:AKZONOBEL Kromasil,250×21.2mm,5μm,流动相A:0.05%三氟乙酸水溶液,流动相B:乙腈),得到(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-6-乙基-2-甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮8(6mg),产率3.61%。
LCMS:431.1[M+H]+
1H NMR(400MHz,DMSO-d6)δ8.56(d,J=7.2Hz,1H),8.11(s,1H),7.74(t,J=7.5Hz,1H),7.54(t,J=7.1Hz,1H),7.32(dd,J=15.5,7.9Hz,1H),7.14(s,1H),5.86(m,1H),4.80(s,2H), 4.29-4.12(m,J=7.2Hz,2H),2.59(s,3H),1.69(d,J=7.1Hz,3H),1.29(t,J=7.1Hz,3H).
实施例9
(R)-1-(4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-2-methyl-7,8-dihydro-6H-[1,4]oxazino[3,2-g]quinazolin-6-yl)ethan-1-one
(R)-1-(4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2-甲基-7,8-二氢-6H-[1,4]噁嗪[3,2-g]喹唑啉-6-基)乙-1-酮
第一步
4-acetyl-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonitrile
4-乙酰基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈
将3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈9a(200mg,1.25mmol)加入到乙酸酐(1.5mL)中,室温条件下持续搅拌反应4小时。反应完全后,减压浓缩,得到粗品标题产物9b,直接用于下一步反应。
MS m/z(ESI):203.1[M+1]+
第二步
4-acetyl-7-nitro-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonitrile
4-乙酰基-7-硝基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈
将4-乙酰基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈9b(250mg,1.24mmol)加入到乙酸(1.5mL)中,室温条件下将浓硝酸(299.62mg,3.09mmol,214.02μL)缓慢滴加入反应体系中,剧烈放热,持续搅拌反应2小时。加水搅拌,析出固体,过滤,将滤液减压浓缩,得到固体4-乙酰基-7-硝基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈9c(220mg,889.94μmol),产率71.98%。
MS m/z(ESI):248.1[M+1]+
第三步
7-nitro-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonitrile
7-硝基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈
将4-乙酰基-7-硝基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈9c(177mg,716.00μmol)加入到5M氢氧化钠溶液(1mL)和甲醇(2mL)的混合溶液中,滴加双氧水(0.5mL),室温条件下持续搅拌反应2小时。反应完全后加入乙酸乙酯(30mL)和水(10mL),萃取,分液,水相用乙酸乙酯萃取,合并有机相,以饱和氯化钠溶液(30mL×2)洗涤,无水硫酸钠干燥,过滤,减压浓缩,得到7-硝基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈9d(100mg,487.40μmol),产率68.07%。
MS m/z(ESI):206.1[M+1]+
第四步
7-nitro-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxamide
7-硝基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺
将7-硝基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈9d(100mg,487.40μmol)加入到5M氢氧化钠溶液(1mL)和二甲亚砜(1.5mL)的混合溶剂中,滴加双氧水(0.8mL),室温条件下持续搅拌反应30分钟。反应完全后,加入乙酸乙酯(30mL)和水(10mL),分液,水相用乙酸乙酯萃取,合并有机相,依次以饱和氯化钠溶液(30mL×2)洗涤,无水硫酸钠干燥,过滤,减压浓缩,得到粗品7-硝基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺9e(80mg,358.45μmol),产率73.54%。
MS m/z(ESI):223.9[M+H]+
第五步
4-acetyl-7-nitro-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxamide
4-乙酰基-7-硝基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺
将7-硝基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺9e(100mg,448.06μmol)加入到乙酸酐(1mL)和三乙胺(1mL)的混合溶液中,室温条件下持续搅拌反应12小时。加入乙酸乙酯(30mL)和水(15mL),萃取,分液,水相用乙酸乙酯萃取,合并有机相,以饱和氯化钠溶液(30mL×2)洗涤,无水硫酸钠干燥,过滤,减压浓缩,得到粗品4-乙酰基-7-硝基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺9f(100mg,377.04μmol),产率84.15%。
MS m/z(ESI):266.0[M+1]+
第六步
4-acetyl-7-amino-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxamide
4-乙酰基-7-氨基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺
将4-乙酰基-7-硝基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺9f(100mg,377.04μmol)和10%钯炭催化剂(40.12mg,377.04μmol)依次加入到乙酸乙酯(2mL)中,置换氢气3次,室温条件下持续搅拌反应2小时。过滤,将滤液减压浓缩,得到粗品4-乙酰基-7-氨基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺9g(80mg,340.08μmol),产率90.20%。
MS m/z(ESI):236.0[M+1]+
第七步
6-acetyl-2-methyl-3,6,7,8-tetrahydro-4H-[1,4]oxazino[3,2-g]quinazolin-4-one
6-乙酰基-2-甲基-3,6,7,8-四氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4-酮
将4-乙酰基-7-氨基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺9g(100mg,425.10μmol)、原乙酸三乙酯(206.89mg,1.28mmol)和乙酸(51.05mg,850.20μmol)依次加入到乙醇(5mL)中,加热至110℃持续搅拌反应6小时。减压浓缩,加入乙酸乙酯(30mL)和水(15mL),萃取,分液,水相用乙酸乙酯萃取,合并有机相,以饱和氯化钠溶液(30mL×2)洗涤,无水硫酸钠干燥,过滤,减压浓缩,得到的残留物用薄层色谱(展开剂:A体系)分离纯化,得到6-乙酰基-2-甲基-3,6,7,8-四氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4-酮9h(21mg,81.00μmol),产率19.05%。
MS m/z(ESI):260.0[M+1]+
第八步
(R)-1-(4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-2-methyl-7,8-dihydro-6H-[1,4]oxazino[3,2-g]quinazolin-6-yl)ethan-1-one
(R)-1-(4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2-甲基-7,8-二氢-6H-[1,4]噁嗪[3,2-g]喹唑啉-6-基)乙-1-酮
将6-乙酰基-2-甲基-3,6,7,8-四氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4-酮9h(20mg,77.14μmol)、(R)-1-(3-(二氟甲基)-2-氟苯基)乙烷-1-胺1e(34.81mg,154.29μmol)、卡特缩合剂(44.35mg,100.29μmol)和DBU(35.23mg,231.43μmol)依次加入到DMF(2mL)中,室温条件下持续搅拌反应12小时。加入乙酸乙酯(30mL)和水(10mL),萃取,分液,水相用乙酸乙酯萃取2次,合并有机相,以饱和氯化钠溶液(20mL×2)洗涤,以无水硫酸钠干燥,过滤,减压浓缩,得到的残余物经制备液相色液相谱分离纯化(色谱柱:AKZONOBEL Kromasil,250×21.2mm,5μm,流动相A:0.05%三氟乙酸水溶液,流动相B:乙腈;20mL/min),得到(R)-1-(4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2-甲基-7,8-二氢-6H-[1,4]噁嗪[3,2-g]喹唑啉-6-基)乙-1-酮9(1.9mg,4.33μmol),产率5.61%。
MS m/z(ESI):431.0[M+1]+
实施例10
(R)-4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-2,6,8,8-tetramethyl-6H-[1,4]oxazino[3,2-g]quinazolin-7(8H)-one
(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2,6,8,8-四甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮
第一步
2-bromo-N-(5-cyano-2-hydroxyphenyl)-2-methylpropanamide
2-溴-N-(5-氰基-2-羟基苯基)-2-甲基丙酰胺
冰浴下,将3-氨基-4-羟基苄腈8a(1g,7.46mmol)和碳酸氢钠(1.25g,14.91mmol)依次加入到乙酸乙酯(5mL)和水(5mL)的混合溶剂中,滴加2-甲基-2-溴丙酰溴(2.57g,11.18mmol),并继续搅拌反应过夜。反应完全后,加入乙酸乙酯(30mL)和水(30mL),萃取,分液,水相用乙酸乙酯萃取(30mL×3),合并有机相,有机相用无水硫酸钠干燥,过滤,减压浓缩,得到粗品2-溴-N-(5-氰基-2-羟基苯基)-2-甲基丙酰胺10b(2g),产率94.75%
MS m/z(ESI):283.0[M+H]+
第二步
2,2-dimethyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonitrile
2,2-二甲基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈
将2-溴-N-(5-氰基-2-羟基苯基)-2-甲基丙酰胺10b(2g,7.06mmol)和碳酸钾(1.46g,10.60mmol)依次加入DMF(2mL)中,加热至45℃搅拌反应16小时。反应完全后,加入乙酸乙酯(20mL)和水(20mL),萃取,分液,有机相用水(20mL)洗涤,无水硫酸钠干燥,过滤,减压浓缩,得到粗品2,2-二甲基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈10c(1.2g),产率84.01%。
MS m/z(ESI):203.0[M+H]+
第三步
2,2-dimethyl-7-nitro-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonitrile
2,2-二甲基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈
室温下,将2,2-二甲基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈10c(700mg,3.46mmol)和浓硝酸(21.81g,346.18mmol,15.15mL)依次加入到醋酸(5mL)溶液中,搅拌反应过夜。反应完全后,加水搅拌,析出固体,过滤,将滤液减压浓缩,得到粗品2,2-二甲基-7- 硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈10d(850mg),产率99.33%。
MS m/z(ESI):248.1[M+H]+
第四步
2,2,4-trimethyl-7-nitro-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonitrile
2,2,4-三甲基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈
将2,2-二甲基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈10d(400mg,1.62mmol)、碳酸钾(894.51mg,6.47mmol)和碘甲烷(2.30g,16.18mmol,1.01mL)依次加入到乙腈(2.0mL)中,在室温下搅拌反应16小时。反应完全后,抽滤,滤液减压浓缩,得到粗品2,2,4-三甲基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈10e(400mg),产率94.63%。MS m/z(ESI):262.1[M+H]+
第五步
2,2,4-trimethyl-7-nitro-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxamide
2,2,4-三甲基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺
将2,2,4-三甲基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈10e(350mg,1.34mmol)、氢氧化钾(150.34mg,2.68mmol)和双氧水(0.5mL)依次加入到二甲亚砜(0.5mL)中,室温搅拌反应0.5小时。反应完全后,过滤,加入水(10mL),用乙酸乙酯萃取(50mL×3),合并有机相,用饱和食盐水洗涤(30mL×2),无水硫酸钠干燥,过滤,减压浓缩,得到粗品2,2,4-三甲基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺10f(300mg),产率80.18%。
MS m/z(ESI):262.9[M-NH2]+
第六步
7-amino-2,2,4-trimethyl-3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxamide
7-氨基-2,2,4-三甲基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺
将2,2,4-三甲基-7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺10f(50mg,179.05μmol)和10%钯炭催化剂(217.47μg,1.79μmol)依次加入到乙酸乙酯(1mL)中,置换氢气三次,在室温下搅拌反应3小时。反应完全后,过滤,减压浓缩,得到粗品7-氨基-2,2,4-三甲基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺10g(40mg),产率89.62%。
MS m/z(ESI):250.1[M+H]+
第七步
2,6,8,8-tetramethyl-3,6-dihydro-4H-[1,4]oxazino[3,2-g]quinazoline-4,7(8H)-dione
2,6,8,8-四甲基-3,6-二氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4,7(8H)-二酮
将7-氨基-2,2,4-三甲基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺10g(50mg,200.59μmol)、原乙酸三乙酯(97.62mg,601.77μmol,115.16μL)和乙酸(24.09mg,401.18μmol,22.94μL)依次加入到乙醇(1mL)中,加热至110℃回流反应16小时。反应完全后,减压浓缩,得到的残留物用硅胶柱层析进一步分离纯化(洗脱剂:B体系),得到2,6,8,8-四甲基-3,6- 二氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4,7(8H)-二酮10h(50mg),产率91.21%。
MS m/z(ESI):274.0[M+H]+
第八步
(R)-4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-2,6,8,8-tetramethyl-6H-[1,4]oxazino[3,2-g]quinazolin-7(8H)-one
(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2,6,8,8-四甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮
将2,6,8,8-四甲基-3,6-二氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4,7(8H)-二酮10h(50mg,182.96μmol)、DBU(83.56mg,548.87μmol,82.08μL)、卡特缩合剂(105.19mg,237.85μmol)和(R)-1-(3-(二氟甲基)-2-氟苯基)乙烷-1-胺1e(69.22mg,365.92μmol)依次加入到DMF(917.91μL)中,室温下搅拌反应过夜。反应完全后,浓缩,得到的残留物用制备液相色谱分离纯化(色谱柱:AKZONOBEL Kromasil,250×21.2mm,5μm,流动相A:0.05%三氟乙酸水溶液,流动相B:乙腈),得到(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2,6,8,8-四甲基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮10(15mg),产率18.45%。
MS m/z(ESI):445.0[M+H]+
1H NMR(400MHz,DMSO-d6)δ8.44(d,J=7.3Hz,1H),8.06(s,1H),7.75(t,J=7.5Hz,1H),7.56(t,J=7.2Hz,1H),7.36(t,J=7.7Hz,1H),7.30(s,1H),7.13(s,1H),5.88(m,1H),3.52(s,3H),2.56(s,3H),2.37(s,3H),1.68(d,J=7.1Hz,3H),1.53(s,3H).
实施例11
(R)-N-(1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)-2,6-dimethyl-7,8-dihydro-6H-[1,4]oxazino[3,2-g]quinazolin-4-amine
(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-2,6-二甲基-7,8-二氢-6H-[1,4]噁嗪[3,2-g]喹唑啉-4-胺

第一步
4-methyl-7-nitro-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxamide
4-甲基-7-硝基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺
将7-硝基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺9e(100mg,448.06μmol)、碳酸钾(123.85mg,896.12μmol)和碘甲烷(190.79mg,1.34mmol)依次加入到DMF(1mL)中,室温条件下持续搅拌反应12小时。反应完全后,加入乙酸乙酯(30mL)和水(15mL),萃取,分液,水相用乙酸乙酯萃取,合并有机相,以饱和氯化钠溶液(30mL×2)洗涤,无水硫酸钠干燥,过滤,减压浓缩,得到粗品4-甲基-7-硝基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺11a(100mg,421.56μmol),产率94.09%。
MS m/z(ESI):238.1[M+1]+
第二步
7-amino-4-methyl-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxamide
7-氨基-4-甲基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺
将4-甲基-7-硝基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺11a(110mg,463.72μmol)和10%钯炭催化剂(49.35mg,463.72μmol)依次加入到乙酸乙酯(3mL)中,置换氢气3次,室温条件下持续搅拌反应2小时。过滤,将滤液减压浓缩,得到粗品7-氨基-4-甲基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺11b(88mg,424.65μmol),产率91.57%。
MS m/z(ESI):208.1[M+1]+
第三步
2,6-dimethyl-3,6,7,8-tetrahydro-4H-[1,4]oxazino[3,2-g]quinazolin-4-one
2,6-二甲基-3,6,7,8-四氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4-酮
将7-氨基-4-甲基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺11b(88mg,424.65μmol)、原乙酸三乙酯(206.67mg,1.27mmol)和乙酸(51.00mg,849.30μmol)依次加入到乙醇(3mL)中,加热至110℃持续搅拌反应6小时。减压浓缩,加入乙酸乙酯(30mL)和水(15mL),萃取,分液,水相用乙酸乙酯萃取,合并有机相,以饱和氯化钠溶液(30mL×2)洗涤,无水硫酸钠干燥,过滤,减压浓缩,得到的残留物用薄层色谱分离纯化(展开剂:A体系),得到2,6-二甲基-3,6,7,8-四氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4-酮11c(90mg,389.19μmol),产率91.65%。MS m/z(ESI):232.0[M+1]+
第四步
(R)-N-(1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)-2,6-dimethyl-7,8-dihydro-6H-[1,4]oxazino[3,2-g]quinazolin-4-amine
(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-2,6-二甲基-7,8-二氢-6H-[1,4]噁嗪[3,2-g]喹唑啉-4-胺
将2,6-二甲基-3,6,7,8-四氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4-酮11c(90mg,389.19μmol)、(R)-1-(3-(二氟甲基)-2-氟苯基)乙烷-1-胺1e(175.63mg,778.38μmol)、卡特缩合剂(223.77mg,505.95μmol)和DBU(177.75mg,1.17mmol,164.58μL)依次加入到DMF(3mL)中,室温条件下持续搅拌反应12小时。加入乙酸乙酯(30mL)和水(10mL),萃取,分液,水相用乙酸乙酯萃取,合并有机相,以饱和氯化钠溶液(20mL×2)洗涤,减压浓缩,得到的残余物经制备液相色谱分离纯化(色谱柱:AKZONOBEL Kromasil,250×21.2mm,5μm,流动相A:0.05%三氟乙酸水溶液,流动相B:乙腈),得到(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-2,6-二甲基-7,8-二氢-6H-[1,4]噁嗪[3,2-g]喹唑啉-4-胺11(8.0mg,17.89μmol),产率4.60%。
MS m/z(ESI):403.0[M+1]+
实施例12
(R)-N-(1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)-2,7,7-trimethyl-7,8-dihydro-[1,4]dioxino[2,3-g]quinazolin-4-amine
(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-2,7,7-三甲基-7,8-二氢-[1,4]二噁英[2,3-g]喹唑啉-4-胺
第一步
3-hydroxy-4-((2-methylallyl)oxy)benzonitrile
3-羟基-4-((2-甲基烯丙基)氧基)苄腈
将3,4-二羟基苄腈12a(2g,14.80mmol)、2-甲基-3-溴-1-丙烯(2.4g,17.76mmol)和碳酸锂(1.31g,17.76mmol)依次加入到DMF(5mL)中,加热至55℃搅拌反应16小时。反应完 全后,减压浓缩,得到的残留物用硅胶柱层析分离纯化(洗脱剂:A体系),得到3-羟基-4-((2-甲基烯丙基)氧基)苄腈12b(1.3g),产率46.42%。
MS m/z(ESI):190.0[M+H]+
第二步
3,3-dimethyl-2,3-dihydrobenzo[b][1,4]dioxine-6-carbonitrile
3,3-二甲基-2,3-二氢苯并[b][1,4]二噁英-6-腈
将3-羟基-4-((2-甲基烯丙基)氧基)苄腈12b(760mg,4.02mmol)加入到甲酸(10mL)中,加热至100℃搅拌反应过夜。反应完全后,减压浓缩,得到的残留物用硅胶柱层析(洗脱剂:A体系)分离纯化,得到3,3-二甲基-2,3-二氢苯并[b][1,4]二噁英-6-腈12c(275.8mg),产率36.29%。
MS m/z(ESI):190.1[M+H]+
第三步
3,3-dimethyl-7-nitro-2,3-dihydrobenzo[b][1,4]dioxine-6-carbonitrile
3,3-二甲基-7-硝基-2,3-二氢苯并[b][1,4]二噁英-6-腈
将3,3-二甲基-2,3-二氢苯并[b][1,4]二噁英-6-腈12c(276mg,1.46mmol)和发烟硝酸(9.19g,145.87mmol,6.38mL)依次加入到乙酸(2mL)中,室温下搅拌反应过夜。反应完全后,加入水(5mL),过滤,将滤饼真空干燥,得到3,3-二甲基-7-硝基-2,3-二氢苯并[b][1,4]二噁英-6-腈12d(300mg),产率87.81%。
MS m/z(ESI):235.1[M+H]+
第四步
3,3-dimethyl-7-nitro-2,3-dihydrobenzo[b][1,4]dioxine-6-carboxamide
3,3-二甲基-7-硝基-2,3-二氢苯并[b][1,4]二噁英-6-羧酰胺
将3,3-二甲基-7-硝基-2,3-二氢苯并[b][1,4]二噁英-6-腈12d(250mg,1.07mmol)、氢氧化钾(119.78mg,2.13mmol)和双氧水(2mL)依次加入到二甲亚砜(2mL)中,室温搅拌反应0.5小时。反应完全后,加入乙酸乙酯(20mL)和水(20mL),萃取,分液,有机相用水洗涤(20mL),无水硫酸钠干燥,过滤,减压浓缩,得到粗品3,3-二甲基-7-硝基-2,3-二氢苯并[b][1,4]二噁英-6-羧酰胺12e(200mg),产率74.29%.
MS m/z(ESI):253.1[M+H]+
第五步
7-amino-3,3-dimethyl-2,3-dihydrobenzo[b][1,4]dioxine-6-carboxamide
7-氨基-3,3-二甲基-2,3-二氢苯并[b][1,4]二噁英-6-羧酰胺
将3,3-二甲基-7-硝基-2,3-二氢苯并[b][1,4]二噁英-6-羧酰胺12e(100mg,396.47μmol)和10%钯炭催化剂(421.93μg,3.96μmol)依次加入到乙酸乙酯(1mL)中,置换氢气三次,室温搅拌反应3小时。反应完全后,过滤,将滤液减压浓缩,得到粗品7-氨基-3,3-二甲基-2,3- 二氢苯并[b][1,4]二噁英-6-羧酰胺12f(80mg),产率90.79%。
MS m/z(ESI):223.0[M+H]+
第六步
2,7,7-trimethyl-7,8-dihydro-[1,4]dioxino[2,3-g]quinazolin-4(3H)-one
2,7,7-三甲基-7,8-二氢-[1,4]二噁英[2,3-g]喹唑啉-4(3H)-酮
将7-氨基-3,3-二甲基-2,3-二氢苯并[b][1,4]二噁英-6-羧酰胺12f(80mg,359.97μmol)、原乙酸三乙酯(175.19mg,1.08mmol,206.67μL)和乙酸(43.23mg,719.94μmol,41.18μL)依次加入到乙醇(1mL)中,加热至110℃回流反应16小时。反应完全后,减压浓缩,得到的残留物用硅胶柱层析分离纯化(洗脱剂:B体系),得到2,7,7-三甲基-7,8-二氢-[1,4]二噁英[2,3-g]喹唑啉-4(3H)-酮12g(44.5mg),产率50.20%。
MS m/z(ESI):247.0[M+H]+
第七步
(R)-N-(1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)-2,7,7-trimethyl-7,8-dihydro-[1,4]dioxino[2,3-g]quinazolin-4-amine
(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-2,7,7-三甲基-7,8-二氢-[1,4]二噁英[2,3-g]喹唑啉-4-胺
将2,7,7-三甲基-7,8-二氢-[1,4]二噁英[2,3-g]喹唑啉-4(3H)-酮12g(44.5mg,180.70μmol)、DBU(82.53mg,542.11μmol,81.07μL)、(R)-1-(3-(二氟甲基)-2-氟苯基)乙烷-1-胺1e(68.37mg,361umol)和卡特缩合剂(103.90mg,234.91μmol)依次加入到DMF(918.94μL)中,加热至50℃搅拌反应过夜。反应完全后,减压浓缩,得到的残留物经制备液相色谱纯分离化(色谱柱:AKZONOBEL Kromasil,250×21.2mm,5μm,流动相A:0.05%三氟乙酸水溶液,流动相B:乙腈),得到(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-2,7,7-三甲基-7,8-二氢-[1,4]二噁英[2,3-g]喹唑啉-4-胺12(15mg),产率19.89%。
MS m/z(ESI):418.2[M+1]+
1H NMR(400MHz,DMSO-d6)δ9.57(d,J=44.1Hz,1H),8.20(d,J=19.3Hz,1H),7.72(s,1H),7.57(d,J=7.4Hz,1H),7.33(d,J=8.2Hz,1H),7.15(s,1H),5.89(m,1H),5.26-4.90(m,1H),4.18(d,J=20.5Hz,2H),2.54(s,3H),1.64(t,J=6.5Hz,3H),1.36(d,J=10.5Hz,6H).
实施例13
(R)-4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-2-methyl-6-phenyl-6H-[1,4]oxazino[3,2-g]quinazolin-7(8H)-one
(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2-甲基-6-苯基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮
第一步
7-nitro-3-oxo-4-phenyl-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carbonitrile
7-硝基-3-氧代-4-苯基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈
将7-硝基-3-氧代-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈8c(300mg,1.37mmol)、苯硼酸(333.82mg,2.74mmol)、三乙胺(415.55mg,4.11mmol,570.82μL)和醋酸铜(372.96mg,2.05mmol)依次加入到四氢呋喃(2mL)中,加热至60℃搅拌反应4小时。反应完全后,减压浓缩,得到的残留物用硅胶柱层析(洗脱剂:A体系)分离纯化,得到7-硝基-3-氧代-4-苯基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈13a(75mg),产率18.56%。
MS m/z(ESI):296.1[M+H]+
第二步
7-nitro-3-oxo-4-phenyl-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxamide
7-硝基-3-氧代-4-苯基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺
将7-硝基-3-氧代-4-苯基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-腈13a(75mg,254.02μmol)、氢氧化钾(28.50mg,508.05μmol)和双氧水(0.5mL)依次加入到二甲亚砜(1mL)中,室温下搅拌反应半小时。反应完全后,加入乙酸乙酯(20mL)和水(20mL),萃取,分液,有机相用水洗涤(20mL),无水硫酸钠干燥,过滤,减压浓缩,得到粗品7-硝基-3-氧代-4-苯基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺13b(70mg),产率87.97%。
MS m/z(ESI):314.0[M+H]+
第三步
7-amino-3-oxo-4-phenyl-3,4-dihydro-2H-benzo[b][1,4]oxazine-6-carboxamide
7-氨基-3-氧代-4-苯基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺
将7-硝基-3-氧代-4-苯基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺13b(70mg,223.45μmol)和10%钯炭催化剂(237.80μg,2.23μmol)依次加入到乙酸乙酯(1mL)中,置换氢气3次,室温搅拌反应4小时。反应完全后,过滤,减压浓缩,得粗品7-氨基-3-氧代-4-苯基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺13c(60mg),产率94.79%。
MS m/z(ESI):283.9[M+H]+
第四步
2-methyl-6-phenyl-3,6-dihydro-4H-[1,4]oxazino[3,2-g]quinazoline-4,7(8H)-dione
2-甲基-6-苯基-3,6-二氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4,7(8H)-二酮
将7-氨基-3-氧代-4-苯基-3,4-二氢-2H-苯并[b][1,4]噁嗪-6-羧酰胺13c(60mg,211.80μmol)、原乙酸三乙酯(206.16mg,1.27mmol,243.20μL)和乙酸(50.88mg,847.21μmol,48.45μL)依次加入到乙醇(2mL)中,加热至110℃回流反应16小时。反应完全后,减压浓缩,得到的残留物用硅胶柱层析(洗脱剂:B体系)分离纯化,得到2-甲基-6-苯基-3,6-二氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4,7(8H)-二酮13d(48mg),产率73.75%。
MS m/z(ESI):307.9[M+H]+
第五步
(R)-4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-2-methyl-6-phenyl-6H-[1,4]oxazino[3,2-g]quinazolin-7(8H)-one
(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2-甲基-6-苯基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮
将2-甲基-6-苯基-3,6-二氢-4H-[1,4]噁嗪[3,2-g]喹唑啉-4,7(8H)-二酮13d(48mg,156.20μmol)、(R)-1-(3-(二氟甲基)-2-氟苯基)乙烷-1-胺1e(59.10mg,312.40μmol)、DBU(71.34mg,468.59μmol,70.63μL)和卡特缩合剂(103.62mg,234.30μmol)依次加入到DMF(0.5mL)中,加热至70℃反应16小时。反应完全后,减压浓缩,得到的残留物经制备液相色谱分离纯化(色谱柱:AKZONOBEL Kromasil,250×21.2mm,5μm,流动相A:0.05%三氟乙酸水溶液,流动相B:乙腈),得到(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2-甲基-6-苯基-6H-[1,4]噁嗪[3,2-g]喹唑啉-7(8H)-酮13(15mg),产率20.07%。
MS m/z(ESI):479.0[M+H]+
实施例14
(R)-N-(1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)-1,6-dimethyl-1H-imidazo[4,5-g]quinazolin-8-amine
(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-1,6-二甲基-1H-咪唑并[4,5-g]喹唑啉-8-胺
第一步
methyl 5-nitro-1H-benzo[d]imidazole-6-carboxylate
5-硝基-1H-苯并[d]咪唑-6-羧酸甲酯
冰浴条件下,将1H-苯并[d]咪唑-6-羧酸甲酯14a(1.0g,5.68mmol)加入到发烟硝酸(10mL)中,将浓硫酸(10mL)缓慢加入反应体系中搅拌20分钟,加热至90℃反应3小时。将反应液缓慢倒入冰水(150mL)中搅拌,析出固体,过滤,使用少量水洗涤固体,烘干,得到5-硝基-1H-苯并[d]咪唑-6-羧酸甲酯14b(1.1g,4.97mmol),产率87.62%。
MS m/z(ESI):221.9[M+1]+
第二步
methyl 1-methyl-5-nitro-1H-benzo[d]imidazole-6-carboxylate
1-甲基-5-硝基-1H-苯并[d]咪唑-6-羧酸甲酯
将5-硝基-1H-苯并[d]咪唑-6-羧酸甲酯14b(1.0g,4.52mmol)和氢化钠(235.20mg,5.43mmol,60%purity)依次加入到四氢呋喃(20mL)中,搅拌10分钟,加入碘甲烷(1.28g,9.04mmol,562.96μL),室温条件下持续搅拌反应12小时。在反应液中加入乙酸乙酯(30mL)和水(10mL)淬灭反应,分液,水相以乙酸乙酯(30mL)萃取2次,合并有机相,以饱和氯化钠溶液(30mL×2)洗涤,无水硫酸钠干燥,过滤,减压浓缩,得到的残留物用薄层色谱分离纯化(展开剂:A体系),得到1-甲基-5-硝基-1H-苯并[d]咪唑-6-羧酸甲酯14c(1.0g,4.25mmol),产率94.04%。
MS m/z(ESI):235.9[M+1]+
第三步
methyl 5-amino-1-methyl-1H-benzo[d]imidazole-6-carboxylate
5-氨基-1-甲基-1H-苯并[d]咪唑-6-羧酸甲酯
将1-甲基-5-硝基-1H-苯并[d]咪唑-6-羧酸甲酯14c(70mg,297.62μmol)和10%钯炭催化剂(31.67mg,297.62μmol)依次加入到甲醇(5mL)中,置换氢气3次,室温条件下持续搅拌反应3小时。过滤,将滤液减压浓缩,得到粗品5-氨基-1-甲基-1H-苯并[d]咪唑-6-羧酸甲酯14d,直接用于下一步反应。
MS m/z(ESI):206.1[M+1]+
第四步
1,6-dimethyl-1H-imidazo[4,5-g]quinazolin-8-ol
1,6-二甲基-1H-咪唑并[4,5-g]喹唑啉-8-醇
将5-氨基-1-甲基-1H-苯并[d]咪唑-6-羧酸甲酯14d(60mg,292.38μmol)加入到乙腈(2mL)和2M氯化氢的1,4-二氧六环(3mL)溶液中,加热至100℃持续搅拌反应12小时。减压浓缩,加入乙酸乙酯(30mL)溶解,有机相再用饱和碳酸氢钠水溶液洗涤,无水硫酸钠干燥,过滤,减压浓缩,得到1,6-二甲基-1H-咪唑并[4,5-g]喹唑啉-8-醇14e(60mg,280.08μmol),产率95.79%。
MS m/z(ESI):215.1[M+1]+
第五步
(R)-N-(1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)-1,6-dimethyl-1H-imidazo[4,5-g]quinazolin-8-amine
(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-1,6-二甲基-1H-咪唑并[4,5-g]喹唑啉-8-胺
将1,6-二甲基-1H-咪唑并[4,5-g]喹唑啉-8-醇14e(60mg,280.08μmol)、(R)-1-(3-(二氟甲基)-2-氟苯基)乙烷-1-胺1e(94.80mg,420.12μmol)、卡特缩合剂(185.81mg,420.12μmol)和DBU(127.92mg,840.25μmol,118.44μL)依次加入到DMF(3mL)中,加热至60℃持续搅拌反应1小时。加入乙酸乙酯(30mL)和水(15mL),萃取,分液,水相用乙酸乙酯萃取2次,合并有机相,以饱和氯化钠溶液(10mL×2)洗涤,无水硫酸钠干燥,过滤,减压浓缩,得到的残留物经制备液相色谱分离纯化(色谱柱:AKZONOBEL Kromasil,250×21.2mm,5μm,流动相A:0.05%三氟乙酸水溶液,流动相B:乙腈),得到(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-1,6-二甲基-1H-咪唑并[4,5-g]喹唑啉-8-胺14(5.0mg,11.81μmol),产率4.22%。MS m/z(ESI):386.0[M+1]+
实施例15
(R)-4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-2,6-dimethylpyrido[2,3-g]quinazolin-7(6H)-one
(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2,6-二甲基吡啶并[2,3-g]喹唑啉-7(6H)-酮
第一步
6-nitro-2-oxo-1,2-dihydroquinoline-7-carbonitrile
6-硝基-2-氧代-1,2-二氢喹啉-7-腈
将6-硝基-2-氧代-1,2,3,4-四氢喹啉-7-腈7d(72mg,331.52μmol)、N-溴代丁二酰亚胺(76.71mg,430.98μmol)和偶氮二异丁腈(8.17mg,49.73μmol)依次加入到1,2-二氯乙烷(2mL)中,加热至80℃持续搅拌反应10小时。减压浓缩,得到的残留物经硅胶柱层析(洗脱剂:B体系)分离纯化,得到6-硝基-2-氧代-1,2-二氢喹啉-7-腈15a(55mg,255.62μmol),产率77.10%。
MS m/z(ESI):216.1[M+1]+
第二步
1-methyl-6-nitro-2-oxo-1,2-dihydroquinoline-7-carbonitrile
1-甲基-6-硝基-2-氧代-1,2-二氢喹啉-7-腈
将6-硝基-2-氧代-1,2-二氢喹啉-7-腈15a(55mg,255.62μmol)、碘甲烷(72.56mg,511.24μmol,31.83μL)和碳酸钾(70.66mg,511.24μmol)依次加入到N,N-二甲基甲酰胺(1mL)中,室温条件下持续搅拌反应12小时。加入乙酸乙酯(30mL)和水(15mL),萃取,分液,水相用乙酸乙酯萃取,合并有机相,以饱和氯化钠溶液(15mL×2)洗涤,无水硫酸钠干燥,过滤,减压浓缩,得到的残留物用薄层色谱(展开剂:A体系)分离纯化,得到1-甲基-6-硝基-2-氧代-1,2-二氢喹啉-7-腈15b(32mg,139.62μmol),产率54.62%。
MS m/z(ESI):230.0[M+1]+
第三步
1-methyl-6-nitro-2-oxo-1,2-dihydroquinoline-7-carboxamide
1-甲基-6-硝基-2-氧代-1,2-二氢喹啉-7-羧酰胺
将1-甲基-6-硝基-2-氧代-1,2-二氢喹啉-7-腈15b(32mg,139.62μmol)加入到二甲基亚砜(1mL)和5M氢氧化钠溶液(1mL)中,滴加双氧水(0.5mL),室温条件下持续搅拌反应1小时。加入乙酸乙酯(30mL)和水(15mL),萃取,分液,水相用乙酸乙酯萃取,合并有机相,以饱和氯化钠溶液(10mL×2)洗涤,减压浓缩,得到粗品1-甲基-6-硝基-2-氧代-1,2-二氢喹啉-7-羧酰胺15c(30mg,121.36μmol),产率86.92%。
MS m/z(ESI):247.9[M+1]+
第四步
6-amino-1-methyl-2-oxo-1,2-dihydroquinoline-7-carboxamide
6-氨基-1-甲基-2-氧代-1,2-二氢喹啉-7-羧酰胺
将1-甲基-6-硝基-2-氧代-1,2-二氢喹啉-7-羧酰胺15c(30mg,121.36μmol)、10%钯炭催化剂(12.91mg,121.36μmol)加入到甲醇(1mL)中,置换氢气3次,室温条件下持续搅拌反应3小时。过滤,减压浓缩,得到粗品6-氨基-1-甲基-2-氧代-1,2-二氢喹啉-7-羧酰胺15d(25mg,115.09μmol),产率94.84%。
MS m/z(ESI):218.0[M+1]+
第五步
2,6-dimethyl-3,6-dihydropyrido[2,3-g]quinazoline-4,7-dione
2,6-二甲基-3,6-二氢吡啶并[2,3-g]喹唑啉-4,7-二酮
将6-氨基-1-甲基-2-氧代-1,2-二氢喹啉-7-羧酰胺15d(25mg,115.09μmol)、原乙酸三乙酯(56.01mg,345.27μmol)和乙酸(13.82mg,230.18μmol)依次加入到无水乙醇(1mL)中,加热至110℃持续搅拌反应6小时。体系减压浓缩,得到的残留物经硅胶柱层析(洗脱剂:B体系)分离纯化,得到2,6-二甲基-3,6-二氢吡啶并[2,3-g]喹唑啉-4,7-二酮15e(11mg,45.60μmol),产率39.62%。
MS m/z(ESI):242.0[M+1]+
第六步
(R)-4-((1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)amino)-2,6-dimethylpyrido[2,3-g]quinazolin-7(6H)-one
(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2,6-二甲基吡啶并[2,3-g]喹唑啉-7(6H)-酮
将2,6-二甲基-3,6-二氢吡啶并[2,3-g]喹唑啉-4,7-二酮15e(11mg,45.60μmol)、(R)-1-(3-(二氟甲基)-2-氟苯基)乙烷-1-胺1e(15.43mg,68.40μmol)、卡特缩合剂(30.25mg,68.40μmol)和DBU(20.82mg,136.79μmol)依次加入到DMF(0.5mL)中,室温条件下持续搅拌反应12小时。加入乙酸乙酯(30mL)和水(10mL),萃取,分液,水相用乙酸乙酯萃取,合并有机相,以饱和氯化钠溶液(20mL×2)洗涤,减压浓缩,得到的残余物经制备液相色谱分离纯化(色谱柱:AKZONOBEL Kromasil,250×21.2mm,5μm,流动相A:0.05%三氟乙酸水溶液,流动相B:乙腈),得到(R)-4-((1-(3-(二氟甲基)-2-氟苯基)乙基)氨基)-2,6-二甲基吡啶并[2,3-g]喹唑啉-7(6H)-酮15(2.3mg,5.02μmol),产率11.01%。
MS m/z(ESI):413.0[M+1]+
实施例16
(R)-N-(1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)-2,2,6-trimethyl-[1,3]dioxolo[4,5-g]quinazolin-8-amine
(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-2,2,6-三甲基-[1,3]二噁唑[4,5-g]喹唑啉-8-胺
第一步
methyl 2,2-dimethylbenzo[d][1,3]dioxole-5-carboxylate
2,2-二甲基苯并[d][1,3]二噁唑-5-羧酸甲酯
在氮气的保护下,将3,4-二羟基苯甲酸甲酯16a(500mg,2.97mmol)、五氧化二磷(633.38mg,4.46mmol)和丙酮(345.41mg,5.95mmol,437.22μL)依次加入到甲苯(5mL)中,加热至80℃回流反应2小时。反应完全后,用25%的氢氧化钠溶液淬灭反应,加入水(10mL),用乙酸乙酯萃取(50mL×3),合并有机相,用饱和食盐水洗涤(30mL×2),无水硫酸钠干燥,过滤,减压浓缩,得到粗品2,2-二甲基苯并[d][1,3]二噁唑-5-羧酸甲酯16b(580mg),产率93.68%。
MS m/z(ESI):209.1[M+H]+
第二步
methyl 2,2-dimethyl-6-nitrobenzo[d][1,3]dioxole-5-carboxylate
2,2-二甲基-6-硝基苯并[d][1,3]二噁唑-5-羧酸甲酯
将2,2-二甲基苯并[d][1,3]二噁唑-5-羧酸甲酯16b(20mg,96.06μmol,17.01μL)和浓硝酸(605.28mg,9.61mmol,420.33μL)依次加入到乙酸(500.00μL)中,室温搅拌反应过夜。反 应完全后,加入乙酸乙酯(10mL)和水(10mL),萃取,分液,水相用乙酸乙酯萃取(5mL×2),合并有机相,用无水硫酸钠干燥,过滤,减压浓缩,得到粗品2,2-二甲基-6-硝基苯并[d][1,3]二噁唑-5-羧酸甲酯16c(20mg),产率82.23%。
MS m/z(ESI):254.1[M+H]+
第三步
methyl 6-amino-2,2-dimethylbenzo[d][1,3]dioxole-5-carboxylate
6-氨基-2,2-二甲基苯并[d][1,3]二噁唑-5-羧酸甲酯
将2,2-二甲基-6-硝基苯并[d][1,3]二噁唑-5-羧酸甲酯16c(500mg,1.97mmol)和10%钯炭催化剂(2.10mg,19.75μmol)依次加入到乙酸乙酯(2mL)中,置换氢气三次,室温下搅拌反应3小时。反应完全后,过滤,浓缩,得到粗品6-氨基-2,2-二甲基苯并[d][1,3]二噁唑-5-羧酸甲酯16d(420mg),产率95.28%。
MS m/z(ESI):224.1[M+H]+
第四步
2,2,6-trimethyl-[1,3]dioxolo[4,5-g]quinazolin-8(7H)-one
2,2,6-三甲基-[1,3]二噁唑[4,5-g]喹唑啉-8(7H)-酮
将6-氨基-2,2-二甲基苯并[d][1,3]二噁唑-5-羧酸甲酯16d(440mg,1.97mmol)和4M氯化氢的1,4-二氧六环溶液(25mL)依次加入到乙腈(13mL)中,加热至100℃回流反应16小时。反应完全后,浓缩,得到的残留物用硅胶柱层析(洗脱剂:A体系)分离纯化,得到2,2,6-三甲基-[1,3]二噁唑[4,5-g]喹唑啉-8(7H)-酮16e(443.2mg),产率96.82%。
MS m/z(ESI):233.1[M+H]+
第五步
(R)-N-(1-(3-(difluoromethyl)-2-fluorophenyl)ethyl)-2,2,6-trimethyl-[1,3]dioxolo[4,5-g]quinazolin-8-amine
(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-2,2,6-三甲基-[1,3]二噁唑[4,5-g]喹唑啉-8-胺
将2,2,6-三甲基-[1,3]二噁唑[4,5-g]喹唑啉-8(7H)-酮16e(200mg,861.20μmol)、(R)-1-(3-(二氟甲基)-2-氟苯基)乙烷-1-胺1e(325.84mg,1.72mmol)、DBU(393.32mg,2.58mmol,385.60μL)和卡特缩合剂(495.16mg,1.12mmol)依次加入到DMF(5.00mL)中,室温下搅拌反应过夜。反应完全后,得到的残留物经制备液相色谱分离纯化(色谱柱:AKZONOBEL Kromasil,250×21.2mm,5μm,流动相A:0.05%三氟乙酸水溶液,流动相B:乙腈),得到(R)-N-(1-(3-(二氟甲基)-2-氟苯基)乙基)-2,2,6-三甲基-[1,3]二噁唑[4,5-g]喹唑啉-8-胺16(10mg),产率2.88%。
MS m/z(ESI):404.0[M+H]+
生物学评价
测试例1、本发明化合物阻断SOS1与KRAS G12C蛋白结合的测试
以下方法用于测定本发明化合物在体外条件下阻断SOS1与KRAS G12C蛋白相互作用的能力。本方法使用Cisbio公司的KRAS-G12C/SOS1BINDING ASSAY KITS试剂盒(货号63ADK000CB16PEG),详细实验操作可参考试剂盒说明书。
将实验流程简述如下:使用diluent buffer(货号62DLBDDF)配置Tag1-SOS1和Tag2-KRAS-G12C蛋白为5X的工作液浓度备用。受试化合物溶解于DMSO中制备为10mM贮存液,随后使用diluent buffer进行稀释备用。首先向孔中加入2μL受试化合物(反应体系终浓度为10000nM-0.1nM),随后加入4μL Tag1-SOS1 5X的工作液和4μL Tag2-KRAS-G12C 5X的工作液,离心并混匀,静置15分钟;随后加入10μL预混匀的anti-Tag1-Tb3+和anti-Tag2-XL665,室温下孵育2小时;最后使用酶标仪以TF-FRET模式上测定在304nm的激发波长下,各孔发射波长为620nm和665nm的荧光强度,并计算各孔665/620的荧光强度比值。通过与对照组(0.1%DMSO)的荧光强度比值进行比较,计算受试化合物在各浓度下的百分比抑制率,并通过GraphPad Prism 5软件以受试化合物浓度对数值-抑制率进行非线性回归分析,获得化合物的IC50值,见表1。
表1本发明化合物阻断SOS1与KRAS G12C蛋白相互作用的IC50数据
结论:从表1可以看出,本发明化合物对于SOS1与KRAS G12C蛋白相互作用具有较强的阻断作用。
测试例2、本发明化合物的小鼠药代动力学研究
1、实验目的
以BALB/c小鼠为受试动物,采用LC/MS/MS法测定BALB/c小鼠经注射本发明实施例3化合物,测定其不同时刻血浆中的药物浓度,研究本发明化合物在小鼠体内的药代动力学特征。
2、实验方案
2.1实验药品与动物;
实施例3化合物;
BALB/c小鼠,雄性,20-24g,购买于维通利华实验动物技术有限公司。
2.2药物配制
静脉注射组:称取适量待测化合物,加入适量DMAC:30%solutol HS 15(solutol HS15:water=3:7):Saline=10%:10%:80%(v/v/v),配置最终配置浓度为0.2mg/mL溶液;
口服灌胃组:称取适量待测化合物,加入适量DMAC:30%solutol HS 15(solutol HS15:water=3:7):Saline=5%:5%:95%(v/v/v),配置最终配置浓度为1mg/mL溶液;
2.3给药
BALB/c小鼠18只,待测化合物静脉注射组(9只/组)和口服灌胃组(9只/组),禁食过夜后分别静脉注射给药及口服灌胃给药,给药4小时后进食。
3、操作
于给药前和给药后0.083小时、0.25小时、0.5小时、1小时、2小时、4小时、8小时和24小时经眼眶采血100μL,EDTA-K2抗凝。血液样本采集后置于冰上,于30分钟之内离心分离血浆(离心条件:1500g,10分钟)。收集的血浆分析前存放于–40~–20℃。
用LC-MS/MS测定化合物静脉注射和灌胃给药后小鼠血浆中待测化合物含量。
4、药代动力学参数结果
本发明的化合物的小鼠药代动力学参数如下表所示。
备注:N/A表示无相关结果
结论:本发明化合物实施例3药代吸收良好,生物利用度高,具有较好的药代动力学性质。

Claims (11)

  1. 一种通式(I)所示的化合物或其立体异构体、互变异构体或其可药用的盐:
    其中:
    环A选自C6-C10芳基、5-10元杂芳基、5-8元杂环基或9-10元双环杂环基;
    环B选自4-11元杂环、C6-C10芳环或5-10元芳杂环;
    R1相同或不同,各自独立地选自氢原子、烷基、卤素、硝基、氰基、环烷基、杂环基、芳基、杂芳基、=O、-OR3、-C(O)R3、-C(O)OR3、-NHC(O)R3、-NHC(O)OR3、-NR4R5、-C(O)NR4R5、-CH2NHC(O)OR3、-CH2NR4R5或-S(O)rR3,其中所述的烷基、环烷基、杂环基、芳基或杂芳基任选进一步被一个或多个烷基、卤素、硝基、氰基、环烷基、杂环基、芳基、杂芳基、=O、-OR3、-C(O)R3、-C(O)OR3、-NHC(O)R3、-NHC(O)OR3、-NR4R5、-C(O)NR4R5、-CH2NHC(O)OR3、-CH2NR4R5或-S(O)rR3的取代基所取;
    R2相同或不同,各自独立地选自氢原子、烷基、烯基、卤素、硝基、氰基、环烷基、杂环基、芳基、杂芳基、=O、-OR3、-C(O)R3、-C(O)OR3、-NHC(O)R3、-NHC(O)OR3、-NR4R5、-C(O)NR4R5、-CH2NHC(O)OR3、-CH2NR4R5或-S(O)rR3,其中所述的烷基、烯基、环烷基、杂环基、芳基或杂芳基任选进一步被一个或多个烷基、卤素、硝基、氰基、环烷基、杂环基、芳基、杂芳基、=O、-OR3、-C(O)R3、-C(O)OR3、-NHC(O)R3、-NHC(O)OR3、-NR4R5、-C(O)NR4R5、-CH2NHC(O)OR3、-CH2NR4R5或-S(O)rR3的取代基所取;
    X选自N或CRa;X优选为CRa
    Ra选自氢原子、烷基、卤素或环烷基;
    R3各自独立地选自氢原子、烷基、环烷基、杂环基、芳基或杂芳基,其中所述的烷基、环烷基、杂环基、芳基或杂芳基任选进一步被一个或多个选自氘原子、羟基、卤素、硝基、氰基、烷基、烷氧基、卤代烷基、卤代烷氧基、环烷基、杂环基、芳基、杂芳基、=O、-C(O)R6、-C(O)OR6、-OC(O)R6、-NR7R8、-C(O)NR7R8、-SO2NR7R8或-NR7C(O)R8的取代基所取代;
    R4和R5各自独立地选自氢原子、羟基、卤素、烷基、烷氧基、环烷基、杂环基、芳基或杂芳基,其中所述的烷基、烷氧基、环烷基、杂环基、芳基或杂芳基任选进一步被一个或多个选自羟基、卤素、硝基、氰基、烷基、烷氧基、卤代烷基、 卤代烷氧基、羟基烷基、环烷基、杂环基、芳基、杂芳基、=O、-C(O)R6、-C(O)OR6、-OC(O)R6、-NR7R8、-C(O)NR7R8、-SO2NR7R8或-NR7C(O)R8的取代基所取代;
    或者,R4和R5与它们相连接的原子一起形成一个4~8元杂环基,其中4~8元杂环基内含有一个或多个N、O或S(O)r,并且所述的4~8元杂环基任选进一步被一个或多个选自羟基、卤素、硝基、氰基、烷基、烷氧基、卤代烷基、卤代烷氧基、羟基烷基、环烷基、杂环基、芳基、杂芳基、=O、-C(O)R6、-C(O)OR6、-OC(O)R6、-NR7R8、-C(O)NR7R8、-SO2NR7R8或-NR7C(O)R8的取代基所取代;
    R6、R7和R8各自独立地选自氢原子、烷基、氨基、环烷基、杂环基、芳基或杂芳基,其中所述的烷基、环烷基、杂环基、芳基或杂芳基任选进一步被一个或多个选自羟基、卤素、硝基、氨基、氰基、烷基、烷氧基、环烷基、杂环基、芳基、杂芳基、羧基或羧酸酯基的取代基所取代;
    r各自独立地选自0、1或2;
    m选自1、2、3或4;
    n选自1、2、3或4。
  2. 根据权利要求1所述的通式(I)所示的化合物或其立体异构体、互变异构体或其可药用的盐,其为通式(II)所示的化合物或其立体异构体、互变异构体或其可药用的盐:
    其中:环B、R1、R2、m和n的定义如权利要求1中所述。
  3. 根据权利要求1或2所述的化合物或其立体异构体、互变异构体或其可药用的盐,其中R1选自C1-C4烷基、卤素、C1-C4卤代烷基或氨基;优选为三氟甲基、二氟甲基、氨基或氟原子。
  4. 根据权利要求1或2所述的化合物或其立体异构体、互变异构体或其可药用的盐,其中R2选自卤素、C1-C4烷基、C1-C4烯基、C1-C4卤代烷基、C5-C6芳基、-C(O)R3或=O;其中所述烷基优选为甲基、乙基、丙基或异丙基;其中所述烯基优选为烯丙基;其中所述芳基优选为苯基;
    R3选自C1-C4烷基,优选为甲基。
  5. 根据权利要求1或2所述的化合物或其立体异构体、互变异构体或其可药用的盐,其中环B选自5-6元杂环或5-6元芳杂环;环B优选为以下结构:
  6. 根据权利要求1或2所述的化合物或其立体异构体、互变异构体或其可药用的盐,其中选自以下具体结构:
  7. 根据权利要求1~6中任一项所述的化合物或其立体异构体、互变异构体或其可药用的盐,其中所述的化合物为:

  8. 一种药物组合物,所述的药物组合物含有有效剂量的根据权利要求1~7中任何一项所述的化合物或其立体异构体、互变异构体或其可药用的盐,及可药用的载体、赋形剂或它们的组合物。
  9. 根据权利要求1~7中任何一项所述的化合物或其立体异构体、互变异构体或其可药用的盐,或根据权利要求8所述的药物组合物在制备SOS1抑制剂中的用途。
  10. 根据权利要求1~7中任何一项所述的化合物或其立体异构体、互变异构体或其可药用的盐,或根据权利要求8所述的药物组合物在制备治疗由SOS1介导的疾病的药物中的用途,其中所述的由SOS1介导的疾病优选为RAS家族蛋白信号传导通路依赖性相关的癌症、SOS1突变导致的癌症或SOS1突变导致的遗传性疾病。
  11. 根据权利要求10所述的用途,其中所述的由SOS1介导的疾病选自肺癌、胰腺癌、结肠癌、膀胱癌、前列腺癌、胆管癌、胃癌、弥漫性大B细胞淋巴瘤、神经纤维瘤、努南综合征、心面皮肤综合征、Ⅰ型遗传性齿龈纤维瘤、胚胎性横纹肌肉瘤、塞尔托利细胞睾丸瘤或皮肤颗粒细胞瘤。
PCT/CN2023/078415 2022-03-03 2023-02-27 三环类衍生物及其制备方法和用途 WO2023165438A1 (zh)

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