CN104876931B - A kind of preparation method of (S)-5-fluoro-3-phenyl-2-[1-(9H-purine-6-amino)-propyl group]-3H-quinazoline-4-one - Google Patents

A kind of preparation method of (S)-5-fluoro-3-phenyl-2-[1-(9H-purine-6-amino)-propyl group]-3H-quinazoline-4-one Download PDF

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CN104876931B
CN104876931B CN201410070320.4A CN201410070320A CN104876931B CN 104876931 B CN104876931 B CN 104876931B CN 201410070320 A CN201410070320 A CN 201410070320A CN 104876931 B CN104876931 B CN 104876931B
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CN104876931A (en
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董岩岩
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Shandong Xuan Pharmaceutical Technology Co Ltd
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Shandong Xuan Pharmaceutical Technology Co Ltd
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Abstract

The formula of the present invention relates to relates to the method that one prepares (S) 5 fluorine 3 phenyl 2 [1 (9H purine 6 amino) propyl group] 3H quinazoline 4 ketone, the method prepares gained by three-step reaction, reactions steps is simple, yield is high, optical purity is high, can be with volume production.

Description

A kind of preparation method of (S)-5-fluoro-3-phenyl-2-[1-(9H-purine-6-amino)-propyl group]-3H-quinazoline-4-one
1, technical field
The present invention relates to one and prepare the new side of (S)-5-fluoro-3-phenyl-2-[1-(9H-purine-6-amino)-propyl group]-3H-quinazoline-4-one Method.
2, background technology
Its chemistry of Idelalisib entitled (S)-5-fluoro-3-phenyl-2-[1-(9H-purine-6-amino)-propyl group]-3H-quinazoline-4-one, be by Gilead Sciences(Gilid Science Co.) the high selectivity researched and developed is administered orally PI3K δ inhibitor, can be used for treating chronic lymphatic Chronic myeloid leukemia, non-Hodgkin lymphoma.
The white blood of chronic lymphocytic (CLL) is sick as a kind of progress cancer the most slowly, is that U.S.'s Equations of The Second Kind is most commonly seen Leukemia, the accumulation of too much eukocyte may cause the mortality complication including severe infections.At present, this disease The sick scheme that a gamma therapy is the one or more chemotherapeutics of rituximab combination.Most patient's original chemical immunity are controlled Can recur after treatment, the patient of about 20% is intractable.Idelalisib is the best to the curative effect of CLL, sees statistically significant in advance Effect, is expected to become the new chronic leukemia therapy not comprising chemotherapy regimen, and this Therapeutic Method is not only simple effective, Er Qieyou It is oral medication in it, therefore can improve the overall quality of life of patient.As height selective PI3K inhibitor, Idelalisib Safety good compared with other other PI3K inhibitor.
In current prior art, to the preparation such as WO2005/113554 of Idelalisib just describes about The preparation method of Idelalisib, but the step comparison step of preparation is long, and preparation method is comparatively laborious, and yield is relatively low, and And optical purity is relatively low.
3, summary of the invention
It is an object of the invention to provide a kind of new preparation (S)-5-fluoro-3-phenyl-2-[1-(9H-purine-6-amino)-propyl group]-3H-quinoline azoles The method of quinoline-4-ketone, concrete technical scheme is as follows:
The preparation method of a kind of (S)-5-fluoro-3-phenyl-2-[1-(9H-purine-6-amino)-propyl group]-3H-quinazoline-4-one, its feature exists In, comprise the following steps:
A 2-amino-6-fluobenzoic acid and N-tertbutyloxycarbonyl-C4H9NO2 are joined in pyridine by (), add tricresyl phosphite Phenyl ester, in 40-70 DEG C of oil bath, stirring reaction 8-15 hour, adds aniline, stirring reaction 5-10 hour in 80-140 DEG C of oil bath, Concentrating under reduced pressure, filtrate adds acetic acid ethyl dissolution, respectively with water and saturated sodium-chloride washing, is dried, obtains 1-(5-fluoro-4-carbonyl-3- Phenyl-3,4-dihydroquinazoline-2-base) propyl group-(S)-t-butylcarbamate crude product;
B step a products therefrom is added in dichloromethane by (), add trifluoroacetic acid, be stirred at room temperature 6-10 hour under ice bath, thin Analysing monitoring layer by layer, under ice bath, dropping ammonia adjusts pH to be 8-12, and dichloromethane extracts 1-5 time, is dried, and concentrates, and adds acetic acid Ethyl ester recrystallization, filters, and dries, obtains (S)-2-(1-aminophenyl)-5-fluoro-3-phenylquinazoline-4 (3H)-one;
C step b products therefrom is added in the tert-butyl alcohol by (), add triethylamine and 6-chloropurine, and nitrogen is protected, 80-120 DEG C of oil Refluxing 8-15 hour in bath, after completion of the reaction, concentrate, add methylene chloride dissolving, washing, is spin-dried for, and adds ethyl alcohol recrystallization and obtains (S)-5-fluoro-3-phenyl-2-[1-(9H-purine-6-amino)-propyl group]-3H-quinazoline-4-one.
The oil bath temperature adding triphenyl phosphite reaction in described step a is 55 DEG C, and mixing time is 12 hours.
The oil bath temperature of the reaction adding aniline in described step a is 110 DEG C, and mixing time is 7 hours.
Described step a washes with water 3 times, wash 1 time with saturated sodium-chloride.
It is stirred at room temperature 8 hours in described step b.
Dripping ammonia in described step b adjusts pH to be 10.
In described step b, dichloromethane extracts 3 times.
In described step c, oil bath temperature is 100 DEG C, and return time is 12 hours.
The invention have the advantages that
1) present invention reaction is prepared by three-step reaction, and reactions steps is few;
2) reaction condition of the present invention is gentle, it is easy to operates and controls;
3) yield of the reactions steps of the present invention is higher;
4) the reaction products obtained therefrom optical purity of the present invention is high, is not susceptible to racemization, and EE value is more than 99%;
5) production technology of the present invention can realize industrialization, can carry out hundred feather weight productions.
4, detailed description of the invention
The detailed description of the invention of form by the following examples, is described in further detail the foregoing of the present invention.But no This should being interpreted as, the scope of the above-mentioned theme of the present invention is only limitted to following example.
The preparation of embodiment 1 (S)-5-fluoro-3-phenyl-2-[1-(9H-purine-6-amino)-propyl group]-3H-quinazoline-4-one
The synthesis of 1.1-(5-fluoro-4-carbonyl-3-phenyl-3,4-dihydroquinazoline-2-base) propyl group-(S)-t-butylcarbamate
By the 2-amino i.e. SM1(310g of-6-fluobenzoic acid, 2mol) and N-tertbutyloxycarbonyl-C4H9NO2 (446.6g, 2.2mol) join in 15L pyridine, be eventually adding triphenyl phosphite (744g, 2.4mol), stir in 55 DEG C of oil baths 12 hours, after completion of the reaction, in reactant liquor, add aniline (223.2g, 2.4mol), in 110 DEG C of oil baths, stir 7 little Time, after HPLC monitoring is without raw material, concentrating under reduced pressure, add acetic acid ethyl dissolution, wash 3 times with water, saturated sodium-chloride is washed once, It is dried, is evaporated to obtain 0.9kg crude product.
2. the synthesis of (S)-2-(1-aminophenyl)-5-fluoro-3-phenylquinazoline-4 (3H)-one
By upper step gained 1-(5-fluoro-4-carbonyl-3-phenyl-3,4-dihydroquinazoline-2-base) propyl group-(S)-t-butylcarbamate (0.9kg) join in 1L dichloromethane, add trifluoroacetic acid (TFA) (1.1kg, 1.02mol) under ice bath, be stirred at room temperature 8 hours, after thin layer chromatography monitoring is without raw material, concentrating under reduced pressure, under ice bath, dropping ammonia adjusted pH to 10, dichloromethane extraction 3 Secondary, it is dried, concentrates, obtain grease, add 1 liter of re-crystallizing in ethyl acetate, obtain white solid, filter, 417 grams of drying, Two step yields amount to: 70.2%
3. the synthesis of (S)-5-fluoro-3-phenyl-2-[1-(9H-purine-6-amino)-propyl group]-3H-quinazoline-4-one
By upper step gained (S)-5-fluoro-3-phenyl-2-[1-(9H-purine-6-amino)-propyl group]-3H-quinazoline-4-one (297g, 1.0mol) Join in the 4.0L tert-butyl alcohol, be subsequently adding triethylamine (202g, 2.0mol) and 6-chloropurine (SM4) (309g, 2mol). Nitrogen is protected, and refluxes 12 hours in 100 DEG C of oil baths, and HPLC monitors, and after completion of the reaction, concentrates, and add methylene chloride dissolving, Washing, is spin-dried for, and ethyl alcohol recrystallization obtains white solid 285g, productivity 68.7%.
1H NMR (400MHz, 25 DEG C, DMSO-d6):
12.94 (broad s, 1H), 8.12-8.17 (m, 2H), 7.75-7.80 (m, 2H), 7.43-7.62 (m, 6H), 7.24-7.28 (m, 1H), 4.65 (broad s, 1H), 1.88-1.89 (m, 2H), 0.73 (t, J=7.3Hz, 3H).

Claims (8)

1. a preparation method for (S)-5-fluoro-3-phenyl-2-[1-(9H-purine-6-amino)-propyl group]-3H-quinazoline-4-one, its feature exists In, comprise the following steps:
A 2-amino-6-fluobenzoic acid and N-tertbutyloxycarbonyl-C4H9NO2 are joined in pyridine by (), add triphenyl phosphite, In 40-70 DEG C of oil bath, stirring reaction 8-15 hour, adds aniline, and in 80-140 DEG C of oil bath, stirring reaction 5-10 hour, reduces pressure dense Contracting, filtrate adds acetic acid ethyl dissolution, respectively with water and saturated sodium-chloride washing, is dried, obtains 1-(5-fluoro-4-carbonyl-3-phenyl-3,4- Dihydroquinazoline-2-base) propyl group-(S)-t-butylcarbamate crude product;
B step a products therefrom is added in dichloromethane by (), add trifluoroacetic acid, be stirred at room temperature 6-10 hour, thin layer under ice bath Analysis monitoring, under ice bath, dropping ammonia adjusts pH to be 8-12, and dichloromethane extracts 1-5 time, is dried, and concentrates, and adds ethyl acetate Recrystallization, filters, and dries, obtains (S)-2-(1-aminophenyl)-5-fluoro-3-phenylquinazoline-4 (3H)-one;
C step b products therefrom is added in the tert-butyl alcohol by (), add triethylamine and 6-chloropurine, and nitrogen is protected, in 80-120 DEG C of oil bath Refluxing 8-15 hour, after completion of the reaction, concentrate, add methylene chloride dissolving, washing, is spin-dried for, and adds ethyl alcohol recrystallization and obtains (S)-5- Fluoro-3-phenyl-2-[1-(9H-purine-6-amino)-propyl group]-3H-quinazoline-4-one.
Preparation method the most according to claim 1, it is characterised in that add triphenyl phosphite reaction in described step a Oil bath temperature is 55 DEG C, and mixing time is 12 hours.
Preparation method the most according to claim 1, it is characterised in that add the oil bath temperature of the reaction of aniline in described step a Degree is 110 DEG C, and mixing time is 7 hours.
Preparation method the most according to claim 1, it is characterised in that wash with water in described step a 3 times, use saturated chlorination Sodium washes 1 time.
Preparation method the most according to claim 1, it is characterised in that be stirred at room temperature 8 hours in described step b.
Preparation method the most according to claim 1, it is characterised in that drip ammonia in described step b and adjust pH to be 10.
Preparation method the most according to claim 1, it is characterised in that in described step b, dichloromethane extracts 3 times.
Preparation method the most according to claim 1, it is characterised in that in described step c, oil bath temperature is 100 DEG C, during backflow Between be 12 hours.
CN201410070320.4A 2014-02-28 A kind of preparation method of (S)-5-fluoro-3-phenyl-2-[1-(9H-purine-6-amino)-propyl group]-3H-quinazoline-4-one Active CN104876931B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006023381A1 (en) * 2004-08-16 2006-03-02 Taigen Biotechnology Pyrimidinone compounds
CN101006088A (en) * 2004-06-28 2007-07-25 安进Sf公司 Fused pyrimidine derivatives and compositions thereof as CXCR3 receptor modulators, useful in prevention and treatment of inflammatory and immunoregulatory disorders and diseases
CN101031569A (en) * 2004-05-13 2007-09-05 艾科斯有限公司 Quinazolinones as inhibitors of human phosphatidylinositol 3-kinase delta
WO2013082540A1 (en) * 2011-12-02 2013-06-06 Gilead Calistoga Llc Compositions and methods of treating a proliferative disease with a quinazolinone derivative

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101031569A (en) * 2004-05-13 2007-09-05 艾科斯有限公司 Quinazolinones as inhibitors of human phosphatidylinositol 3-kinase delta
CN101006088A (en) * 2004-06-28 2007-07-25 安进Sf公司 Fused pyrimidine derivatives and compositions thereof as CXCR3 receptor modulators, useful in prevention and treatment of inflammatory and immunoregulatory disorders and diseases
WO2006023381A1 (en) * 2004-08-16 2006-03-02 Taigen Biotechnology Pyrimidinone compounds
WO2013082540A1 (en) * 2011-12-02 2013-06-06 Gilead Calistoga Llc Compositions and methods of treating a proliferative disease with a quinazolinone derivative

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