WO2024140934A1 - 一种连接基药物偶联物的制备方法及其中间体 - Google Patents
一种连接基药物偶联物的制备方法及其中间体 Download PDFInfo
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- A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
- A61K47/68—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
- A61K47/6801—Drug-antibody or immunoglobulin conjugates defined by the pharmacologically or therapeutically active agent
- A61K47/6803—Drugs conjugated to an antibody or immunoglobulin, e.g. cisplatin-antibody conjugates
- A61K47/68037—Drugs conjugated to an antibody or immunoglobulin, e.g. cisplatin-antibody conjugates the drug being a camptothecin [CPT] or derivatives
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- A61K47/51—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent
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- A61K47/6889—Conjugates wherein the antibody being the modifying agent and wherein the linker, binder or spacer confers particular properties to the conjugates, e.g. peptidic enzyme-labile linkers or acid-labile linkers, providing for an acid-labile immuno conjugate wherein the drug may be released from its antibody conjugated part in an acidic, e.g. tumoural or environment
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- C07C317/28—Sulfones; Sulfoxides having sulfone or sulfoxide groups and nitrogen atoms, not being part of nitro or nitroso groups, bound to the same carbon skeleton with sulfone or sulfoxide groups bound to acyclic carbon atoms of the carbon skeleton
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- C07D498/18—Bridged systems
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- C07K5/00—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof
- C07K5/02—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof containing at least one abnormal peptide link
- C07K5/021—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof containing at least one abnormal peptide link containing the structure -NH-(X)n-C(=0)-, n being 5 or 6; for n > 6, classification in C07K5/06 - C07K5/10, according to the moiety having normal peptide bonds
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- C—CHEMISTRY; METALLURGY
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- C07K—PEPTIDES
- C07K5/00—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof
- C07K5/04—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof containing only normal peptide links
- C07K5/06—Dipeptides
- C07K5/06008—Dipeptides with the first amino acid being neutral
- C07K5/06017—Dipeptides with the first amino acid being neutral and aliphatic
- C07K5/06034—Dipeptides with the first amino acid being neutral and aliphatic the side chain containing 2 to 4 carbon atoms
- C07K5/06052—Val-amino acid
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
Definitions
- the invention belongs to the field of drug synthesis, and specifically relates to a preparation method of a linker-drug conjugate and an intermediate thereof.
- the raw material 2-2 and the carboxylic acid intermediate 2-2a generated by removing the tert-butyl group are unstable to acids and bases, and there is a certain risk of decomposition during the deprotection and purification process.
- Compound 2-2a is not purified, and the crude product is used directly for the next reaction, which will cause obvious impurities in the crude product 2-3.
- the polarity of this impurity is close to that of the product, making purification difficult, thereby affecting the product quality of LE14.
- the total yield of preparing LE14 using compound 4-1 as the starting material and Dxd-a therein as the payload source is 7.3% (4-1 ⁇ Dxd-a ⁇ LE14); the total yield of preparing LE14 using compound 4-1 as the starting material and Dxd-b therein as the payload source is 12.9% (4-1 ⁇ Dxd-b ⁇ LE14).
- the synthesis method for preparing Dxd-b according to route 4-b includes: reacting isotecan or its mesylate with 4-methoxytriphenylmethane chloride in the presence of trimethylsilyl chloride and N,N-diisopropylethylamine to prepare an amino-protected intermediate compound 17, reacting compound 17 with tert-butyldiphenylsilyl chloride under alkaline conditions to obtain tert-butyldiphenylsilylated intermediate 16b, removing the amino protection of intermediate 16b under the action of triethylsilane to obtain intermediate 15b, further reacting with hydroxyacetic acid to obtain compound Dxd-b.
- the total yield of Dxd-b prepared using isotecan as the starting material is 48.2% (isotecan ⁇ Dxd-b; hereinafter referred to as the yield of route 4-b).
- the synthesis method of route 5 comprises the following steps: compound 5-1 is reacted with p-nitrophenyl chloroformate to obtain compound 5-2, the obtained compound is then reacted with the corresponding amine to obtain compound 5-3, deprotected to obtain compound 5-4, further reacted with amino acid active ester to obtain 5-5, deprotected to obtain 5-6, then reacted with an acyl azide reagent to obtain compound 5-7, then hydroxymethylated to obtain compound 5-8, then reacted with a DXd derivative to obtain compound 5-9, then the azide group in 5-9 was reduced to obtain compound 5-10, then connected with a maleimide linker to obtain 5-11, and finally the hydroxyl protecting group was removed to obtain the final product LE14.
- the synthetic method for preparing Dxd-b' according to route 5-b includes: reacting isotecan or its mesylate with 4-methoxytriphenylmethane chloride in the presence of trimethylsilyl chloride and N,N-diisopropylethylamine to prepare an amino-protected intermediate compound 17, reacting compound 17 with tert-butyldiphenylsilyl chloride under alkaline conditions to obtain tert-butyldiphenylsilylated intermediate 16b, removing the amino protection of intermediate 16b under the action of triethylsilane to obtain intermediate 15b, further reacting with 2-bromoacetic acid to obtain compound Dxd-b'.
- the total yield of preparing Dxd-b' using isotecan as the starting material is 44.5% (isotecan ⁇ Dxd-b', hereinafter referred to as the yield of route 5-b).
- TMS trimethylsilyl
- TBS tert-butyldimethylsilyl
- the present invention mainly solves the above technical problems through the following technical solutions.
- the present invention provides a method for preparing a compound of formula I, comprising the following steps: subjecting an intermediate compound of formula II to an amide condensation reaction with a compound of formula III or its mesylate in the presence of a condensing agent, a base and a solvent to obtain the compound of formula A compound of formula I;
- the reaction conditions can be conventional conditions of this type of reaction in the art.
- the following scheme is preferred:
- the reaction materials are the compound of formula II, the compound of formula III or its mesylate, the condensing agent, the base and the solvent.
- the amide condensation reaction further comprises the following specific steps: dissolving the compound of formula II in a solvent, adding the condensing agent, and immediately or after a period of reaction, adding the compound of formula III or its mesylate and a base.
- the reaction in the method for preparing the compound of formula I, is protected from light throughout the entire process.
- the molar ratio of the condensing agent to the compound of formula II can be 1-3, preferably 1-1.5, and more preferably 1.5.
- the molar ratio of the base to the compound of formula II can be 1-10, preferably 1-6, more preferably 1-3, and most preferably 1.5.
- the solvent in the method for preparing the compound of formula I, can be one of N,N-dimethylformamide, dimethyl sulfoxide, tetrahydrofuran and 1,4-dioxane, or a mixture of any two or more thereof, preferably N,N-dimethylformamide.
- the preparation method of the compound of formula I may further include a preparation method of the compound of formula II, which may include the following steps: in a solvent, subjecting the compound of formula IV to a deprotection reaction in the presence of a deprotecting agent to obtain a compound of formula II;
- the C 1 ⁇ C 6 alkyl substituted by -Si(C 1 ⁇ C 6 ) 3 can be trimethylsilylethyl or tert-butyldimethylsilylethyl; preferably, the C 1 ⁇ C 6 alkyl substituted by -Si(C 1 ⁇ C 6 ) 3 is trimethylsilylethyl.
- the deprotecting agent can be a fluorine reagent
- the fluorine reagent can be tetrabutylammonium fluoride, tetramethylammonium fluoride, tetrabutylammonium fluoride/acetic acid, pyridine hydrogen fluoride complex, tert-butylammonium fluoride, tert-butylammonium fluoride/acetic acid, tetraethylammonium fluoride, or commercially available tetramethylammonium fluoride/tetrahydrofuran solution, tetraethylammonium fluoride/tetrahydrofuran solution, tetrabutylammonium fluoride/tetrahydrofuran solution, or one or more of silicon tetrafluoride, potassium fluoride, sodium fluoride, lithium fluoride and cesium fluoride, preferably 1M tetrafluoride, potassium fluoride, sodium fluoride
- the temperature of the etherification reaction can be 0°C-80°C, preferably 40°C-70°C, and most preferably 60°C.
- the etherification reaction time can be 3-24 hours, preferably 3-12 hours, and more preferably 4-8 hours.
- the molar ratio of the paraformaldehyde to the compound of formula VII can be 1-10, preferably 1-5, further preferably 1.3-3.0, and most preferably 1.3.
- the molar ratio of trimethylsilyl chloride to the compound of formula VII can be 1-5, preferably 2-4, more preferably 2-3, and most preferably 2.5.
- the solvent in the method for preparing the compound of formula VI, can be one of N,N-dimethylformamide, dimethyl sulfoxide, tetrahydrofuran and 1,4-dioxane, or a mixture of any two or more thereof, preferably tetrahydrofuran or 1,4-dioxane, and more preferably 1,4-dioxane.
- the substitution reaction is carried out under the protection of an inert gas, such as in a nitrogen or helium environment.
- the progress of the substitution reaction can be monitored by conventional testing methods in the art (such as TLC, GC, HPLC or NMR, etc.), and the end point of the reaction is generally when the compound of formula VII is no longer detected (using methanol derivatization).
- the substitution reaction time may be 3-24 hours, preferably 6-18 hours, and more preferably 8-16 hours.
- the present invention also provides a method for preparing a compound of formula VIII, characterized in that it comprises the following steps: performing a reduction reaction on a compound of formula I and a reducing agent in a solvent and in the presence of an acid buffer to obtain a compound of formula VIII;
- the molar ratio of the reducing agent to the compound of formula I can be 1.0-3.0, preferably 1.2-1.8, and more preferably 1.5.
- the volume mass ratio of the acid buffer to the compound of formula I can be 2-10 mL/g, preferably 5-10 mL/g; further preferably 7-8 mL/g, and most preferably 7.7 mL/g.
- the solvent is an ether solvent, such as one of tetrahydrofuran, diethyl ether, 1,4-dioxane, anisole, and methyl tert-butyl ether, or a mixture of any two or more thereof, more preferably tetrahydrofuran.
- the temperature of the reduction reaction may be The temperature is preferably 0°C-20°C, preferably 0°C-10°C.
- the progress of the reaction can be monitored by conventional testing methods in the art (such as TLC, GC, HPLC or NMR, etc.), and the end point of the reaction is generally when the compound of formula I is no longer detected.
- the reaction time can be 0.5-5 hours, preferably 0.5-2.5 hours, and more preferably 0.5-1.0 hour.
- a post-treatment step may be further included: extracting the reaction solution, concentrating the organic phase to obtain a crude compound of formula VIII, or directly concentrating the reaction solution to obtain a crude compound of formula VIII; preferably, the crude compound of formula VIII is purified by silica gel column chromatography to obtain a product compound of formula VIII; more preferably, the eluent used for the silica gel column chromatography is a mixed solvent of dichloromethane and methanol, and the volume ratio of dichloromethane to methanol can be (100-1):1, preferably (10-1):1.
- the present invention also provides a method for preparing compound LE14, comprising the following steps: coupling the compound of formula VIII and 6-(maleimido)hexanoic acid succinimidyl ester in a solvent to obtain the compound LE14, i.e., linker-drug conjugate LE14.
- the reaction materials are the compound of formula VIII, the 6-(maleimido)hexanoic acid succinimidyl ester and the solvent.
- the molar ratio of 6-(maleimido)hexanoic acid succinimide ester to the compound of formula VIII can be 1-5, preferably 1-3, further preferably 1.2-2.0, and most preferably 2.0.
- the solvent in the method for preparing compound LE14, may be an amide solvent.
- the solvent is preferably a chlorinated alkane solvent, wherein the chlorinated alkane solvent is preferably one of dichloromethane, 1,2-dichloroethane and chloroform or a mixture of any two or more thereof, and further preferably dichloromethane.
- the reaction temperature is 0°C-45°C, preferably 25°C-40°C, further preferably 30°C-35°C, and most preferably 35°C.
- the reaction time can be 3-24 hours, preferably 3-10 hours, and more preferably 3-6 hours.
- a post-treatment step may be further included: concentrating the reaction solution to obtain a crude compound LE14; preferably, the crude compound LE14 is purified by silica gel column chromatography to obtain a compound LE14 product; more preferably, the eluent used for the silica gel column chromatography is a mixed solvent of dichloromethane and methanol, and the volume ratio of dichloromethane to methanol can be (100-1):1, preferably (10-1):1.
- the compound of formula VIII in the method for preparing compound LE14, can be prepared by any of the methods for preparing the compound of formula VIII above.
- R is a C 1 -C 6 alkyl group substituted with -Si(C 1 -C 6 ) 3 .
- C 1 -C 6 alkyl refers to a saturated straight or branched chain alkyl group containing 1-6, especially 1-4 carbon atoms, such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, etc., especially methyl or ethyl.
- the reagents and raw materials used in the present invention are commercially available or homemade.
- the use of the purified intermediate II for condensation reaction can greatly improve the purity of the intermediate I and reduce the generation of impurities.
- Continuing the subsequent synthesis steps can also significantly improve the purity of the final product LE14, and the maximum single impurity in the final product LE14 is reduced to less than 0.1%;
- the compound of formula IVb (5.0 g, 7.62 mmol) was dissolved in 50.0 mL of DMF, and potassium fluoride (0.67 g, 11.42 mmol) was added at room temperature to form a mixed solution.
- the reaction was heated to 60°C under nitrogen protection and reacted under this condition for 5.0 to 8.0 hours.
- the compound of formula IVb (5.0 g, 7.62 mmol) was dissolved in tetrahydrofuran (50.0 mL), and a 1.0 M tetrabutylammonium fluoride tetrahydrofuran solution (11.5 mL, 11.43 mmol) was added at room temperature, and the temperature was slowly raised to 40°C under nitrogen protection, and the reaction was carried out under this condition for 8.0 h.
- the carboxylic acid intermediate compound II can withstand the conditions of removing the protecting group according to method 1 in step 3, and can also stably exist under the crude compound II obtained by removing the protecting group according to method 1 in step 3 and conventional column chromatography conditions.
- the crude compound II is purified by conventional column chromatography to obtain a carboxylic acid intermediate II with high purity and low impurity content, thereby avoiding the introduction of impurities into subsequent reaction steps, thereby improving the purity of the final product of compound LE14 while reducing the maximum single impurity, and obtaining a final product of compound LE14 with a purity higher than 99.5% and a maximum single impurity content lower than 0.1%.
- Phase B was 10% methanol acetonitrile solution
- the detection wavelength was 254 nm
- the instrument was Agilent 187260
- the chromatographic column was Agilent Advance Bio Peptide Map, 3.5 ⁇ m, 2.1 ⁇ 250 mm
- the flow rate was 1.0 mL/min.
- the gradient settings are shown in Table 2.
- the total yield of the route is calculated using isoprotecan as the starting material, and the results show that it is much lower than that of the route of the present invention. Therefore, in Route 4 and Route 5, the utilization rate of the expensive material isoprotecan is low, resulting in high production costs, which are not suitable for large-scale industrial production.
- the synthetic route of the present invention can not only provide a high-purity LE14 compound, but also significantly reduce the production cost by improving the utilization rate of exotecan, and is more suitable for large-scale industrial production.
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Abstract
Description
Claims (10)
- 一种式I化合物的制备方法,其特征在于,其包括如下步骤:将式II化合物与式III化合物或其甲磺酸盐在缩合剂、碱以及溶剂存在下进行酰胺缩合反应得到式I化合物;
- 如权利要求1所述的制备方法,其特征在于,所述的制备方法满足下述条件中的一种或多种:(1)所述的式I化合物制备方法中,所述的酰胺缩合反应还包括如下具体步骤:所述的式II化合物溶于溶剂,加入所述的缩合剂,立刻或反应一段时间后加入所述的式III化合物或其甲磺酸盐和所述的碱;(2)所述的式I化合物制备方法中,所述的缩合反应全程避光处理;(3)所述的式I化合物制备方法中,所述的式III化合物与所述的式II化合物的摩尔比值为0.8-1.5,优选为0.9-1.2,进一步优选为0.9-1.0;(4)所述的式I化合物的制备方法中,所述的缩合剂为氯化4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基吗啉、氰代磷酸二乙酯、叠氮磷酸二苯酯、1-乙基-(3-二甲基氨基丙基)碳酰二亚胺盐酸盐、1-羟基苯并三唑、2-(7-氮杂苯并三氮唑)-N,N,N',N'-四甲基脲六氟磷酸酯、苯并三氮唑-N,N,N',N'-四甲基脲六氟磷酸酯、6-氯苯并三氮唑-1,1,3,3-四甲基脲六氟磷酸酯、2-(1H-苯并三偶氮L-1-基)-1,1,3,3-四甲基脲四氟硼酸酯、2-琥珀酰亚胺基-1,1,3,3-四甲基脲四氟硼酸酯和2-(5-降冰片烯-2,3-二甲酰亚胺基)-1,1,3,3-四甲基脲四氟硼酸季铵盐中的一种或其中任意两种或两种以上的混合,优选地,所述的缩合剂为氯化4-(4,6-二甲氧基-1,3,5-三嗪-2-基)-4-甲基吗啉;(5)所述的式I化合物的制备方法中,所述的缩合剂与所述的式II化合物的摩尔比值为1-3,优选为1-1.5;(6)所述的式I化合物的制备方法中,所述的碱为有机碱、无机碱或其混合,优选为有机碱;其中,所述的有机碱优选为N,N-二异丙基乙胺、三乙胺和吡啶中的一种或其中任意两种或两种以上的混合,进一步优选为N,N-二异丙基乙胺;所述的无机碱优选为碱金属氢氧化物、碱金属碳酸盐和碱金属磷酸盐中的一种或其中任意两种或两种以上的混合,进一步优选为碳酸氢钠、碳酸钠、碳酸钾、碳酸铯、氢氧化钠和氢氧化钾中的一种或其中任意两种或两种以上的混合;(7)所述的式I化合物的制备方法中,所述的碱与所述的式II化合物的摩尔比值为1-10,优选为1-6,进一步优选为1-3,最优选为1.5;(8)所述的式I化合物的制备方法中,所述的溶剂为N,N-二甲基甲酰胺、二甲基亚砜、四氢呋喃和1,4-二氧六环中的一种或其中任意两种或两种以上的混合,优选为N,N-二甲基甲酰胺;(9)所述的式I化合物的制备方法中,所述的缩合反应的温度为20℃-50℃,优选为20℃-30℃;(10)所述的式I化合物的制备方法中,所述缩合反应在惰性气体保护下进行,例如在氮气或氦气环境中进行;(11)所述的式I化合物的制备方法中,所述缩合反应的反应完成后,还进一步包括如下后处理步骤:将有机相浓缩后得到式I化合物粗品;优选地,将式I化合物粗品进行硅胶柱层析纯化得到式I化合物产品,更优选地,所述的硅胶柱层析的洗脱剂为氯仿和甲醇的混合溶剂,所述的氯仿和甲醇的体积比为(100-10):1,进一步优选为10:1。
- 如权利要求2所述的制备方法,其特征在于,所述的式I化合物的制备方法还包括式II化合物的制备方法,其包括如下步骤:在溶剂中,将式IV化合物在脱保护剂的存在下进行脱保护反应得到式II化合物;
其中,R为-Si(C1~C6)3取代的C1~C6烷基;优选地,所述的式I化合物的制备方法还包括式IV化合物的制备方法,其包括如下步骤:将式VI化合物与试剂V在溶剂中、在碱的存在下进行醚化反应得到式Ⅳ化合物;
其中,R为-Si(C1~C6)3取代的C1~C6烷基;进一步优选地,所述的式I化合物的制备方法还包括式VI化合物的制备方法,其包括如下步骤:将式Ⅶ化合物与多聚甲醛和三甲基氯硅烷在溶剂中进行取代反应得到式Ⅵ化合物;
- 如权利要求3所述的制备方法,其特征在于,所述的制备方法满足下述条件中的一种或多种:(1)所述的式II化合物的制备方法中,所述的脱保护反应还包括如下具体步骤:所述的式Ⅳ化合物溶于溶剂,加入所述的脱保护剂后加热开启反应、或者所述的脱保护剂溶于溶剂,加入所述的式Ⅳ化合物后加热开启反应;(2)所述的式II化合物的制备方法中,所述的-Si(C1~C6)3取代的C1~C6烷基为三甲基硅基乙基、叔丁基二甲基硅基乙基;优选地,所述的-Si(C1~C6)3取代的C1~C6烷基为三甲基硅基乙基;(3)所述的式II化合物的制备方法中,所述的脱保护剂为氟试剂,所述的氟试剂为四丁基氟化铵、四甲基氟化铵、四丁基氟化铵/醋酸、吡啶氟化氢络合物、叔丁基氟化铵、叔丁基氟化铵/醋酸、四乙基氟化铵,或者市售的四甲基氟化铵/四氢呋喃溶液、四乙基氟化铵/四氢呋喃溶液、四丁基氟化铵/四氢呋喃溶液,或者四氟化硅、氟化钾、氟化钠、氟化锂和氟化铯中的一种或多种,优选为1M四丁基氟化铵/四氢呋喃溶液或者氟化钾;(4)所述的式II化合物的制备方法中,所述的脱保护剂与所述的式Ⅳ化合物的摩尔比值为1-5,优选为1-3,进一步优选为1.1-2.0,最优选为1.5;(5)所述的式II化合物的制备方法中,所述的溶剂为纯化水、N,N-二甲基甲酰胺、二甲基亚砜、四氢呋喃和1,4-二氧六环中的一种或其中任意两种或两种以上的混合,优选为N,N-二甲基甲酰胺或四氢呋喃,最优选为N,N-二甲基甲酰胺;(6)所述的式II化合物的制备方法中,所述的脱保护反应的温度为20℃-80℃,优选为30℃-70℃,进一步优选为40℃-60℃;(7)所述的式II化合物的制备方法中,所述脱保护反应在惰性气体保护下进行,例如在氮气或氦气环境中进行;(8)所述的式II化合物的制备方法中,反应完成后,进一步包括后处理步骤:将反应液浓缩得到式II化合物粗品;优选地,通过将式II化合物粗品进行硅胶柱层析纯化得到式II化合物产品,更优选地,所述的硅胶柱层析所用的洗脱剂为二氯甲烷和甲醇的混合溶剂,所述的二氯甲烷和甲醇的体积比为(100-1):1,优选为(10-1):1;(9)所述的式Ⅳ化合物的制备方法中,所述的醚化反应还包括如下具体步骤:所述的式Ⅵ化合物溶于溶剂,加入所述的碱后,立刻或反应一段时间后加入式所述的试剂Ⅴ;(10)所述的式Ⅳ化合物的制备方法中,所述的试剂V与所述的式Ⅵ化合物的摩尔比值为1-5,优选为1-3,进一步优选为1.1-1.6,最优选为1.5;(11)所述的式IV化合物的制备方法中,所述的碱为有机碱、无机碱或其混合,优选为有机碱;其中,所述的有机碱优选为叔丁醇钾、三乙胺、4-二甲氨基吡啶、吡啶和潘必啶中的一种或其中任意两种或两种以上的混合,进一步优选为潘必啶;所述的无机碱优选为碱金属氢氧化物、碱金属碳酸盐和碱金属磷酸盐中的一种或其中任意两种或两种以上的混合;(12)所述的式IV化合物的制备方法中,所述的碱与所述的式Ⅵ化合物的摩尔比值为1-5,优选为1.2-4,进一步优选为1.5-3;(13)所述的式IV化合物的制备方法中,所述的溶剂为N,N-二甲基甲酰胺、二甲基亚砜、四氢呋喃和1,4-二氧六环中的一种或其中任意两种或两种以上的混合,优选为四氢呋 喃或1,4-二氧六环,进一步优选为四氢呋喃;(14)所述的式IV化合物的制备方法中,所述的醚化反应的温度为0℃-80℃,优选为40℃-70℃,最优选60℃;(15)所述的式IV化合物的制备方法中,所述的醚化反应在惰性气体保护下进行,例如在氮气或氦气环境中进行;(16)所述的式IV化合物的制备方法中,反应完成后,进一步包括后处理步骤:将反应液萃取,将有机相浓缩后得到式IV化合物粗品,或者直接将反应液浓缩得到IV化合物粗品;优选地,通过将式IV化合物粗品进行硅胶柱层析纯化得到IV化合物产品;更优选地,所述的硅胶柱层析所用的洗脱剂为正庚烷和乙酸乙酯的混合溶液,所述的正庚烷和乙酸乙酯的体积比为(20-1):1,优选为(10-1):1;(17)所述的式Ⅵ化合物的制备方法中,所述的多聚甲醛与所述的式Ⅶ化合物的摩尔比值为1-10,优选为1-5,进一步优选为1.3-3.0,最优选为1.3;(18)所述的式Ⅵ化合物的制备方法中,所述的三甲基氯硅烷与所述的式Ⅶ化合物的摩尔比值为1-5,优选为2-4,进一步优选为2-3,最优选为2.5;(19)所述的式Ⅵ化合物的制备方法中,所述的溶剂为N,N-二甲基甲酰胺、二甲基亚砜、四氢呋喃和1,4-二氧六环中的一种或其中任意两种或两种以上的混合,优选为四氢呋喃或1,4-二氧六环,进一步优选为1,4-二氧六环;(20)所述的式Ⅵ化合物的制备方法中,所述的取代反应的温度为-10℃-50℃,优选为15℃-35℃,进一步优选为18℃-25℃;(21)所述的式Ⅵ化合物的制备方法中,所述的取代反应在惰性气体保护下进行,例如在氮气或氦气环境中进行;(22)所述的式Ⅵ化合物的制备方法中,反应完成后,进一步包括后处理步骤:将反应液进行固液分离或者不进行固液分离,将有机相浓缩后得到式Ⅵ化合物;优选地,直接将浓缩后得到的式Ⅵ化合物进行后续反应。
- 一种式VIII化合物的制备方法,其特征在于,包括如下步骤:将式Ⅰ化合物和还原剂在溶剂中和酸缓冲液存在下进行还原反应得到式Ⅷ化合物;
其中,所述的式I化合物为如权利要求1-4中任一项所述的制备方法制备得到。 - 如权利要求5所述的制备方法,其特征在于,所述的制备方法满足下述条件中的一种或多种:(1)所述的式VIII化合物的制备方法中,所述的还原剂为三苯基膦、三叔丁基膦或三甲基膦,或三苯基膦/四氢呋喃溶液、三叔丁基膦/四氢呋喃溶液或三甲基膦/四氢呋喃溶液,优选为三甲基膦/四氢呋喃溶液,进一步优选为1M三甲基膦/四氢呋喃溶液;(2)所述的式VIII化合物的制备方法中,所述的酸缓冲液为醋酸钠缓冲液、甲酸钠缓冲液,优选为醋酸钠缓冲液;所述的酸缓冲液的pH优选为4.0-6.0,进一步优选为4.5-5.5,更进一步优选为5.0;(3)所述的式VIII化合物的制备方法中,所述的还原剂与所述的式I化合物的摩尔比值为1.0-3.0,优选为1.2-1.8,进一步优选为1.5;(4)所述的式VIII化合物的制备方法中,所述的酸缓冲液与所述的式I化合物的体积质量比为2-10mL/g,优选为5-10mL/g,进一步优选为7-8mL/g,最优选7.7mL/g;(5)所述的式VIII化合物的制备方法中,所述的溶剂为醚类溶剂,优选为四氢呋喃、乙醚、1,4-二氧六环、苯甲醚、甲基叔丁基醚中的一种或其中任意两种或两种以上的混合,进一步优选为四氢呋喃;(6)所述的式VIII化合物的制备方法中,所述的还原反应的温度为0℃-20℃,优选为0℃-10℃;(7)所述的式VIII化合物的制备方法中,反应完成后,进一步包括后处理步骤:将反应液萃取,有机相浓缩后得到式VIII化合物粗品,或者直接将反应液浓缩得到式VIII化合物粗品;优选地,将式VIII化合物粗品进行硅胶柱层析纯化得到式VIII化合物产品; 更优选地,所述的硅胶柱层析所用的洗脱剂为二氯甲烷和甲醇的混合溶剂,所述的二氯甲烷和甲醇的体积比为(100-1):1,优选为(10-1):1。
- 一种化合物LE14的制备方法,其特征在于,包括如下步骤:将式VIII化合物和6-(马来酰亚胺基)己酸琥珀酰亚胺酯在溶剂中进行偶联反应得到化合物LE14;
其中,所述的式VIII化合物为如权利要求5或6所述的制备方法制备得到。 - 如权利要求7所述的制备方法,其特征在于,所述的制备方法满足下述条件中的一种或多种:(1)所述的化合物LE14的制备方法中,所述的6-(马来酰亚胺基)己酸琥珀酰亚胺酯与式VIII化合物的摩尔比值为1-5,优选为1-3,进一步优选为1.2-2.0;(2)所述的化合物LE14的制备方法中,所述的溶剂为酰胺类溶剂、氯代烷烃类溶剂、醚类溶剂和腈类溶剂中的一种或其中任意两种或两种以上的混合;优选为氯代烷烃类溶剂,其中,所述的氯代烷烃类溶剂优选为二氯甲烷,1,2-二氯乙烷和氯仿中的一种或其中任意两种或两种以上的混合,进一步优选为二氯甲烷;(3)所述的化合物LE14的制备方法中,所述的偶联反应温度为0℃-45℃,优选为25℃-40℃,进一步优选为30℃-35℃;(4)所述的化合物LE14的制备方法中,反应完成后,进一步包括后处理步骤:将反应液浓缩后得到化合物LE14粗品;优选地,通过将化合物LE14粗品进行硅胶柱层析纯化得到化合物LE14产品;更优选地,所述的硅胶柱层析所用的洗脱剂为二氯甲烷和甲醇的混合溶剂,所述的二氯甲烷和甲醇的体积比为(100-1):1,优选为(10-1):1。
- 一种式II化合物;
- 一种式II化合物的制备方法,其特征在于,其包括如下步骤:在溶剂中,将式IV化合物在脱保护剂的存在下进行脱保护反应得到式II化合物;反应条件如权利要求4所述;
其中,R的定义如权利要求3或4所述。
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| CN116217655A (zh) * | 2022-12-30 | 2023-06-06 | 上海复旦张江生物医药股份有限公司 | 一种连接基药物偶联物的中间体的制备方法 |
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| CN112237634B (zh) * | 2019-07-19 | 2023-11-28 | 上海复旦张江生物医药股份有限公司 | 抗体药物偶联物、其中间体、制备方法及应用 |
| EP4257153B1 (en) * | 2020-12-04 | 2025-11-12 | Shanghai Fudan-Zhangjiang Bio-Pharmaceutical Co., Ltd. | Antibody-drug conjugate, and intermediate thereof, preparation method therefor, and application thereof |
| JP7564958B2 (ja) * | 2020-12-18 | 2024-10-09 | シャンハイ フダン-チャンジャン バイオ-ファーマシューティカル カンパニー リミテッド | B7-h3を標的とする抗体薬物複合体、その製造方法と使用 |
| CN118271357A (zh) * | 2022-12-30 | 2024-07-02 | 上海复旦张江生物医药股份有限公司 | 一种连接基药物偶联物的中间体的制备方法 |
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| WO2020259258A1 (zh) | 2019-06-28 | 2020-12-30 | 上海复旦张江生物医药股份有限公司 | 一种抗体偶联药物、其中间体、制备方法及应用 |
| CN114642739A (zh) * | 2020-12-18 | 2022-06-21 | 泰州复旦张江药业有限公司 | 一种靶向b7-h3的抗体药物偶联物、其制备方法及应用 |
| WO2022126593A1 (zh) * | 2020-12-18 | 2022-06-23 | 上海复旦张江生物医药股份有限公司 | 一种靶向trop2的抗体药物偶联物、其制备方法及应用 |
| WO2022204947A1 (zh) | 2021-03-30 | 2022-10-06 | 上海复旦张江生物医药股份有限公司 | 一种连接基药物偶联物的制备方法及其中间体 |
| CN115215921A (zh) | 2021-04-21 | 2022-10-21 | 上海复旦张江生物医药股份有限公司 | 一种连接基药物偶联物的制备方法及其中间体 |
| CN115385926A (zh) | 2021-05-24 | 2022-11-25 | 上海复旦张江生物医药股份有限公司 | 一种连接基药物偶联物的制备方法及其中间体 |
| CN116178386A (zh) * | 2022-12-30 | 2023-05-30 | 上海复旦张江生物医药股份有限公司 | 一种连接基药物偶联物的制备方法及其中间体 |
| CN116217654A (zh) * | 2022-12-30 | 2023-06-06 | 上海复旦张江生物医药股份有限公司 | 一种连接基药物偶联物的制备方法及其中间体 |
| CN116217655A (zh) * | 2022-12-30 | 2023-06-06 | 上海复旦张江生物医药股份有限公司 | 一种连接基药物偶联物的中间体的制备方法 |
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Also Published As
| Publication number | Publication date |
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| JP2026501936A (ja) | 2026-01-19 |
| EP4628492A1 (en) | 2025-10-08 |
| CN116178386B (zh) | 2025-09-09 |
| KR20250117840A (ko) | 2025-08-05 |
| CN116178386A (zh) | 2023-05-30 |
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