JP2003055377A - Method for producing 2-amino-6-cyclopropylamino-9h- purine - Google Patents

Method for producing 2-amino-6-cyclopropylamino-9h- purine

Info

Publication number
JP2003055377A
JP2003055377A JP2001247064A JP2001247064A JP2003055377A JP 2003055377 A JP2003055377 A JP 2003055377A JP 2001247064 A JP2001247064 A JP 2001247064A JP 2001247064 A JP2001247064 A JP 2001247064A JP 2003055377 A JP2003055377 A JP 2003055377A
Authority
JP
Japan
Prior art keywords
amino
purine
cyclopropylamino
acid
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2001247064A
Other languages
Japanese (ja)
Inventor
Hidetake Umetani
豪毅 梅谷
Tomoyuki Ando
知行 安藤
Junya Fujiwara
純也 藤原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Chemicals Inc
Original Assignee
Mitsui Chemicals Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsui Chemicals Inc filed Critical Mitsui Chemicals Inc
Priority to JP2001247064A priority Critical patent/JP2003055377A/en
Publication of JP2003055377A publication Critical patent/JP2003055377A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide a method for simply obtaining 2-amino-6- cyclopropylamino-9H-purine from a reactional mixture of 2-amino-6-chloropurine with cyclopropylamine in high yield. SOLUTION: An acid is added to the reactional mixture of the 2-amino-6- chloropurine with the cyclopropylamine to thereby form a sparingly soluble salt of the 2-amino-6-cyclopropylamino-9H-purine. The resultant sparingly soluble salt is then specifically crystallized. Thereby, the isolation yield of the reactional product is improved as compared with that of a conventional method and the load on purification after the reaction is remarkably reduced. As a result, the method is suitable as an industrial method for production.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、2−アミノ−6−
シクロプロピルアミノ−9H−プリンの製造及び塩の交
換に関する。
TECHNICAL FIELD The present invention relates to 2-amino-6-
It relates to the production of cyclopropylamino-9H-purine and the exchange of salts.

【0002】[0002]

【従来の技術】抗ウィルス作用を有するAbacavi
r等に挙げられるように、2−アミノ−6−シクロプロ
ピルアミノ−9H−プリンは、核酸誘導体の塩基部分と
して重要である。しかしながら、その製造例は少ない。
Abacavi having antiviral activity
As mentioned in r etc., 2-amino-6-cyclopropylamino-9H-purine is important as a base moiety of a nucleic acid derivative. However, there are few manufacturing examples.

【0003】従来の技術は、2−アミノ−6−クロロプ
リンとシクロプロピルアミンを反応させて2−アミノ−
6−シクロプロピルアミノ−9H−プリンを生成させる
が、その単離法が異なる。それらを例示すると、(1)
未反応の原料を除去した後に、シリカゲルカラムクロマ
トグラフィーを行い、再結晶を3回行う方法(米国特許
第5420115号公報)、(2)炭酸カリウムで中和
した後に、析出物を濾過し、濾液を64時間減圧乾燥
し、その後、再結晶を行う方法(WO992443
1)、等が挙げられる。しかしながら、いずれの方法も
単離収率が11〜23%と低く、実用的な方法ではな
い。
In the prior art, 2-amino-6-chloropurine is reacted with cyclopropylamine to give 2-amino-
6-Cyclopropylamino-9H-purine is produced, but the isolation method is different. For example, (1)
After removing unreacted raw materials, silica gel column chromatography is performed, and recrystallization is performed three times (US Pat. No. 5,420,115), (2) After neutralization with potassium carbonate, the precipitate is filtered and the filtrate is obtained. Is dried under reduced pressure for 64 hours, and then recrystallized (WO992443)
1), and the like. However, none of the methods is practical because the isolation yield is as low as 11 to 23%.

【0004】単離収率が低い原因として、反応後に生成
するシクロプロピルアミンの塩酸塩を除去することが困
難であることが挙げられる。通常、シクロプロピルアミ
ンの塩酸塩のような低級アミンの塩酸塩は、反応液を水
で洗浄することによって、容易に除去できる。しかしな
がら、この場合2−アミノ−6−シクロプロピルアミノ
−9H−プリンも水に易溶であるために、反応液の水洗
浄では反応生成物の大幅な損失を招くため、その方法は
採用できないと考えられる。以上のような理由から、上
記(1)(2)の方法においては実際に水が使用されて
おらず、有機溶媒のみでの煩雑な精製が行われている。
The reason for the low isolation yield is that it is difficult to remove the cyclopropylamine hydrochloride formed after the reaction. Usually, a lower amine hydrochloride such as cyclopropylamine hydrochloride can be easily removed by washing the reaction solution with water. However, in this case, since 2-amino-6-cyclopropylamino-9H-purine is also easily soluble in water, washing the reaction solution with water causes a large loss of the reaction product, so that the method cannot be adopted. Conceivable. For the above reasons, water is not actually used in the above methods (1) and (2), and complicated purification is performed only with an organic solvent.

【0005】[0005]

【発明が解決しようとする課題】本発明の課題は、過剰
のシクロプロピルアミンを除去し、2−アミノ−6−シ
クロプロピルアミノ−9H−プリン及びその塩酸塩を、
簡便かつ高収率で得る製造法を提供することである。
An object of the present invention is to remove excess cyclopropylamine and to remove 2-amino-6-cyclopropylamino-9H-purine and its hydrochloride salt.
It is an object of the present invention to provide a simple and high-yield production method.

【0006】[0006]

【課題を解決する手段】この課題を克服すべく鋭意検討
した結果、2−アミノ−6−クロロプリンとシクロプロ
ピルアミンの反応混合物に水を加えた後に、メタンスル
ホン酸や塩酸のような酸を加えると、2−アミノ−6−
シクロプロピルアミノ−9H−プリンの難水溶性塩が形
成して、該難水溶性塩のみが特異的に晶析できることを
見出した。さらに、メタンスルホン酸を使用した場合に
は、シクロプロピルアミン以外にも、2−アミノ−6−
クロロプリン(原料)も水に容易に溶ける塩になる。そ
のために、原料が残存してしまうような場合でも、容易
に精製できる。こうした方法は操作が簡便であり、単離
収率高いため、工業的製造法として適している。
[Means for Solving the Problems] As a result of extensive studies to overcome this problem, after adding water to a reaction mixture of 2-amino-6-chloropurine and cyclopropylamine, an acid such as methanesulfonic acid or hydrochloric acid was added. When added, 2-amino-6-
It was found that a sparingly water-soluble salt of cyclopropylamino-9H-purine is formed and only the sparingly water-soluble salt can be specifically crystallized. Furthermore, when methanesulfonic acid is used, 2-amino-6-
Chloropurine (raw material) also becomes a salt that dissolves easily in water. Therefore, even if the raw material remains, it can be easily purified. Such a method is suitable as an industrial production method because the operation is simple and the isolation yield is high.

【0007】すなわち、本発明は以下のとおりである。 [1]2−アミノ−6−クロロプリンとシクロプロピル
アミンを反応させて2−アミノ−6−シクロプロピルア
ミノ−9H−プリンを生成させた反応混合物に、酸を添
加することにより2−アミノ−6−シクロプロピルアミ
ノ−9H−プリンの難溶性塩を溶媒中で形成させ、該難
溶性塩を特異的に晶析させる方法。 [2]酸が塩酸、リン酸またはメタンスルホン酸である
[1]に記載の方法。 [3]酸がメタンスルホン酸である[2]に記載の方
法。 [4]晶析する際の溶媒が水もしくは水を含有する均一
溶媒である[1]〜[3]の何れか一項に記載の方法。 [5]2−アミノ−6−シクロプロピルアミノ−9H−
プリンの難水溶性塩。 [6]2−アミノ−6−シクロプロピルアミノ−9H−
プリンの1メタンスルホン酸塩またはその溶媒和物。 [7]2−アミノ−6−シクロプロピルアミノ−9H−
プリンの2塩酸塩またはその溶媒和物。 [8]2−アミノ−6−シクロプロピルアミノ−9H−
プリンの塩を、酸を添加した溶媒中で他の塩に交換する
方法。 [9]2−アミノ−6−シクロプロピルアミノ−9H−
プリンの1メタンスルホン酸塩またはその溶媒和物を塩
酸を添加した溶媒中で塩を交換し、2−アミノ−6−シ
クロプロピルアミノ−9H−プリンの2塩酸塩またはそ
の溶媒和物を得る[8]記載の方法。
That is, the present invention is as follows. [1] 2-Amino-6-chloropurine and cyclopropylamine are reacted to produce 2-amino-6-cyclopropylamino-9H-purine. A method of forming a sparingly soluble salt of 6-cyclopropylamino-9H-purine in a solvent and specifically crystallizing the sparingly soluble salt. [2] The method according to [1], wherein the acid is hydrochloric acid, phosphoric acid or methanesulfonic acid. [3] The method according to [2], wherein the acid is methanesulfonic acid. [4] The method according to any one of [1] to [3], wherein the solvent used for crystallization is water or a homogeneous solvent containing water. [5] 2-Amino-6-cyclopropylamino-9H-
A poorly water-soluble salt of purine. [6] 2-amino-6-cyclopropylamino-9H-
Purine monomethanesulfonate or a solvate thereof. [7] 2-Amino-6-cyclopropylamino-9H-
Purine dihydrochloride or a solvate thereof. [8] 2-Amino-6-cyclopropylamino-9H-
A method of exchanging a salt of purine for another salt in a solvent added with an acid. [9] 2-amino-6-cyclopropylamino-9H-
Purine monomethanesulfonate or a solvate thereof is subjected to salt exchange in a solvent to which hydrochloric acid is added to obtain 2-amino-6-cyclopropylamino-9H-purine dihydrochloride or a solvate thereof [ 8] The method described.

【0008】[0008]

【発明の実施の形態】以下に本発明をさらに詳細に説明
する。2−アミノ−6−シクロプロピルアミノ−9H−
プリンの反応は、米国特許第5420115号公報やW
O9924431に例示されているように、2−アミノ
−6−クロロプリンとシクロプロピルアミンをメタノー
ル等のアルコール中、還流下で行うことができる。反応
式(1)[化1]
BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail below. 2-Amino-6-cyclopropylamino-9H-
Purine reactions are described in US Pat. No. 5,420,115 and W.
2-Amino-6-chloropurine and cyclopropylamine can be carried out in an alcohol such as methanol under reflux, as exemplified in O9924431. Reaction formula (1) [Chemical formula 1]

【0009】[0009]

【化1】 [Chemical 1]

【0010】反応終了後、反応溶媒を留去しなくてもよ
いが、容積効率等の観点から留去することが望ましい。
After the completion of the reaction, the reaction solvent does not have to be distilled off, but it is desirable to distill it off from the viewpoint of volumetric efficiency.

【0011】晶析する際の溶媒は、2−アミノ−6−シ
クロプロピルアミノ−9H−プリンとシクロプロピルア
ミンの各塩に溶解度差があれば、特に限定されることは
ないが、水もしくは水を含有する均一溶媒が好ましい。
The solvent for the crystallization is not particularly limited as long as there is a difference in solubility between the salts of 2-amino-6-cyclopropylamino-9H-purine and cyclopropylamine, but it is not limited to water or water. A homogeneous solvent containing is preferred.

【0012】水を含有する均一溶媒とは、1〜2種から
なる溶媒と水の混合溶媒であり、分離することがないも
のをさす。具体例としては、メタノールと水、エタノー
ルと水、イソプロパノールと水、アセトニトリルと水、
テトラヒドロフランと水、ジメチルホルムアミドと水、
ジメチルスルホキシドと水等が挙げられるが、これらに
限定されるものではない。溶媒和物とは、使用される溶
媒、もしくは空気中や溶媒中に含有される水分が、2−
アミノ−6−シクロプロピルアミノ−9H−プリンの塩
と溶媒和を形成する場合を示す。その溶媒の数は1〜2
である。
The water-containing homogeneous solvent means a mixed solvent of 1 to 2 kinds of solvent and water, which does not separate. As specific examples, methanol and water, ethanol and water, isopropanol and water, acetonitrile and water,
Tetrahydrofuran and water, dimethylformamide and water,
Examples thereof include, but are not limited to, dimethyl sulfoxide and water. The solvate means that the solvent used, or the water content in the air or the solvent is 2-
The case of forming a solvate with a salt of amino-6-cyclopropylamino-9H-purine is shown. The number of the solvent is 1-2
Is.

【0013】晶析に使用される酸は、無機酸と有機酸の
何れでももよく、特に限定されることはない。無機酸の
具体例は、塩酸、臭化水素酸、硝酸、硫酸、リン酸等で
あり、好ましくは、塩酸、リン酸である。有機酸の具体
例は、酢酸、トリフルオロ酢酸、シュウ酸、フマル酸、
フタル酸、安息香酸、メタンスルホン酸、トリフルオロ
メタンスルホン酸、トルエンスルホン酸等であり、メタ
ンスルホン酸が好ましい。
The acid used for crystallization may be either an inorganic acid or an organic acid and is not particularly limited. Specific examples of the inorganic acid include hydrochloric acid, hydrobromic acid, nitric acid, sulfuric acid, phosphoric acid and the like, and hydrochloric acid and phosphoric acid are preferable. Specific examples of the organic acid include acetic acid, trifluoroacetic acid, oxalic acid, fumaric acid,
Phthalic acid, benzoic acid, methanesulfonic acid, trifluoromethanesulfonic acid, toluenesulfonic acid and the like, and methanesulfonic acid is preferable.

【0014】晶析に使用される酸の当量は、1当量以上
あれば特に限定されることはない。晶析する温度に関し
ては、−10℃から溶媒の沸点であり、好ましくは、0
℃から50℃である。
The equivalent of the acid used for crystallization is not particularly limited as long as it is 1 equivalent or more. The temperature for crystallization is from -10 ° C to the boiling point of the solvent, preferably 0.
The temperature is from 50 to 50 ° C.

【0015】塩交換は、2−アミノ−6−シクロプロピ
ルアミノ−9H−プリン塩を溶媒に懸濁または均一の状
態で、所望の酸を過剰に加えて行うことができる。
The salt exchange can be carried out by adding the desired acid in excess while the 2-amino-6-cyclopropylamino-9H-purine salt is suspended or homogeneous in the solvent.

【0016】塩交換に使用される溶媒は特に限定されな
いが、メタノール、エタノール、イソプロパノール等の
アルコール系溶媒や、テトラヒドロフラン、ジエチルエ
ーテル、イソプロピルエーテル等のエーテル系溶媒を使
用することができる。
The solvent used for salt exchange is not particularly limited, but an alcohol solvent such as methanol, ethanol or isopropanol, or an ether solvent such as tetrahydrofuran, diethyl ether or isopropyl ether can be used.

【0017】塩交換の温度は特に限定されないが、−1
0℃から溶媒の沸点であり、好ましくは、0℃から50
℃である。
The salt exchange temperature is not particularly limited, but -1
From 0 ° C to the boiling point of the solvent, preferably from 0 ° C to 50
℃.

【0018】塩の交換に使用される酸は上記の晶析に使
用される酸と同じものが例示でき、塩酸が好ましい。使
用される酸の当量は、1当量以上あれば特に限定される
ことはない。2−アミノ−6−シクロプロピルアミノ−
9H−プリンの各塩は、再結晶を行うことができるが必
ずしも必要ではない。
As the acid used for salt exchange, the same acids as those used for the above crystallization can be exemplified, and hydrochloric acid is preferable. The equivalent of the acid used is not particularly limited as long as it is 1 equivalent or more. 2-amino-6-cyclopropylamino-
Each salt of 9H-purine can be, but need not be, recrystallized.

【0019】[0019]

【実施例】以下に実施例により、本発明を更に詳細に示
すが、本発明はこれらに限定されるものではない。 [実施例1] 2−アミノ−6−シクロプロピル−9H−プリンの1メ
タンスルホン酸塩の合成 メタノール15mlに2−アミノ−6−クロロプリン
5.12g(以下(I)と称する)、シクロプロピルア
ミン12.55ml(以下(II)と称する)を加え
て、還流下で14時間反応した。室温まで冷却し、減圧
下で濃縮を行った。これに水50mlを加えて氷冷し、
メタンスルホン酸3.92mlを加えた。同温で1時間
攪拌した後に、析出物を濾取した。50℃で乾燥すると
表題の化合物が8.32g(収率96%)で得られた。 元素分析 計算値(C8106・CH3SO3H) C:37.76% H:4.93% N:29.35% S:11.20% 実測値 C:37.73% H:4.95% N:29.51% S:10.8 %
The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto. [Example 1] Synthesis of monomethanesulfonate of 2-amino-6-cyclopropyl-9H-purine 5.12 g of 2-amino-6-chloropurine (hereinafter referred to as (I)) in 15 ml of methanol, cyclopropyl 12.55 ml of amine (hereinafter referred to as (II)) was added, and the mixture was reacted under reflux for 14 hours. It cooled to room temperature and concentrated under reduced pressure. Add 50 ml of water and chill with ice,
3.92 ml of methanesulfonic acid was added. After stirring at the same temperature for 1 hour, the precipitate was collected by filtration. After drying at 50 ° C., 8.32 g (yield 96%) of the title compound was obtained. Analysis Calculated (C 8 H 10 N 6 · CH3SO3H) C: 37.76% H: 4.93% N: 29.35% S: 11.20% Found C: 37.73% H: 4. 95% N: 29.51% S: 10.8%

【0020】[実施例2] 2−アミノ−6−シクロプロピル−9H−プリンの2塩
酸塩0.7水和物の合成 メタノール15mlに(I)5.14g、(II)1
2.60mlを加えて、還流下で14時間反応した。室
温まで冷却し、減圧下で濃縮を行った。氷冷下で2規定
の塩酸水60gを加え、30分間攪拌した後に、析出物
を濾取した。50℃で乾燥すると表題の化合物が5.1
3g(収率61%)で得られた。 元素分析 計算値(C8106・2HCl・0.7H2O) C:34.85% H:4.9 0% N:30.48% Cl:25.71% 実測値 C:34.97% H:4.97% N:30.33% Cl:25. 71%
Example 2 Synthesis of 2-Amino-6-cyclopropyl-9H-purine dihydrochloride 0.7 hydrate (15 ml of methanol) (5.14 g of (I), 1 of (II))
2.60 ml was added and the mixture was reacted under reflux for 14 hours. It cooled to room temperature and concentrated under reduced pressure. 60 g of 2N hydrochloric acid water was added under ice cooling, the mixture was stirred for 30 minutes, and the precipitate was collected by filtration. When dried at 50 ° C., the title compound was 5.1.
Obtained in 3 g (61% yield). Analysis Calculated (C 8 H 10 N 6 · 2HCl · 0.7H2O) C: 34.85% H: 4.9 0% N: 30.48% Cl: 25.71% Found C: 34.97 % H: 4.97% N: 30.33% Cl: 25. 71%

【0021】[実施例3] 塩交換による2−アミノ−6−シクロプロピル−9H−
プリンの2塩酸塩0.5水和物の合成(その1) メタノール15mlに(I)5.12g、(II)1
2.55mlを加えて、還流下で13時間反応した。室
温まで冷却し、減圧下で濃縮を行った。これに水50m
lを加えて、氷冷下でメタンスルホン酸3.92mlを
加えた。同温で1時間攪拌した後に濾取し、濾取した固
体をメタノール15mlで洗浄した。この固体をメタノ
ール10mlに懸濁し、10%塩酸メタノール50ml
を室温で加えた。室温で2時間攪拌し、さらに氷冷で1
時間攪拌した。析出物を濾過し乾燥すると、表題の化合
物が7.70g(94%)得られた。 元素分析 計算値(C8106・2HCl・0.5H2O) C:35.31% H:4.8 2% N:30.88% Cl:26.06% 実測値 C:35.11% H:4.85% N:30.53% Cl:25. 7%
Example 3 2-Amino-6-cyclopropyl-9H-by salt exchange
Synthesis of purine dihydrochloride hemihydrate (Part 1) 5.12 g of (I), (II) 1 in 15 ml of methanol
2.55 ml was added and the mixture was reacted under reflux for 13 hours. It cooled to room temperature and concentrated under reduced pressure. 50m of water on this
1 was added, and 3.92 ml of methanesulfonic acid was added under ice cooling. The mixture was stirred at the same temperature for 1 hour and then collected by filtration, and the filtered solid was washed with 15 ml of methanol. This solid was suspended in 10 ml of methanol and 50 ml of 10% hydrochloric acid methanol.
Was added at room temperature. Stir at room temperature for 2 hours, then ice-cool to 1
Stir for hours. The precipitate was filtered and dried to give 7.70 g (94%) of the title compound. Analysis Calculated (C 8 H 10 N 6 · 2HCl · 0.5H2O) C: 35.31% H: 4.8 2% N: 30.88% Cl: 26.06% Found C: 35.11 % H: 4.85% N: 30.53% Cl: 25. 7%

【0022】[実施例4] 塩交換による2−アミノ−6−シクロプロピル−9H−
プリンの2塩酸塩0.5水和物の合成(その2) メタノール150mlに(I)49.68g、(II)
100.52gを用いて実施例3と同様に行った。表題
の化合物が71.64g(90%)得られた。 元素分析 計算値(C8106・2HCl・0.5H2O) C:35.31% H:4.8 2% N:30.88% Cl:26.06% 実測値 C:35.36% H:4.84% N:30.88% Cl:25. 3%
Example 4 2-Amino-6-cyclopropyl-9H-by salt exchange
Synthesis of purine dihydrochloride hemihydrate (Part 2) 49.68 g of (I), (II) in 150 ml of methanol
The same procedure as in Example 3 was carried out using 100.52 g. 71.64 g (90%) of the title compound was obtained. Analysis Calculated (C 8 H 10 N 6 · 2HCl · 0.5H2O) C: 35.31% H: 4.8 2% N: 30.88% Cl: 26.06% Found C: 35.36 % H: 4.84% N: 30.88% Cl: 25. 3%

【0023】[0023]

【発明の効果】本発明によると、2−アミノ−6−シク
ロプロピルアミノ−9H−プリンを簡便かつ高収率で得
ることができる。本発明の方法は、工業的製造法に適し
ている。
According to the present invention, 2-amino-6-cyclopropylamino-9H-purine can be easily obtained in high yield. The method of the present invention is suitable for industrial production methods.

─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成13年9月17日(2001.9.1
7)
[Submission date] September 17, 2001 (2001.9.1)
7)

【手続補正1】[Procedure Amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0009[Correction target item name] 0009

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【0009】[0009]

【化1】 [Chemical 1]

Claims (9)

【特許請求の範囲】[Claims] 【請求項1】2−アミノ−6−クロロプリンとシクロプ
ロピルアミンを反応させて2−アミノ−6−シクロプロ
ピルアミノ−9H−プリンを生成させた反応混合物に、
酸を添加することにより2−アミノ−6−シクロプロピ
ルアミノ−9H−プリンの難溶性塩を溶媒中で形成さ
せ、該難溶性塩を特異的に晶析させる方法。
1. A reaction mixture obtained by reacting 2-amino-6-chloropurine with cyclopropylamine to produce 2-amino-6-cyclopropylamino-9H-purine,
A method of forming a sparingly soluble salt of 2-amino-6-cyclopropylamino-9H-purine in a solvent by adding an acid, and specifically crystallizing the sparingly soluble salt.
【請求項2】酸が塩酸、リン酸またはメタンスルホン酸
である請求項1に記載の方法。
2. The method according to claim 1, wherein the acid is hydrochloric acid, phosphoric acid or methanesulfonic acid.
【請求項3】酸がメタンスルホン酸である請求項2に記
載の方法。
3. The method according to claim 2, wherein the acid is methanesulfonic acid.
【請求項4】晶析する際の溶媒が水もしくは水を含有す
る均一溶媒である請求項1〜3の何れか1項に記載の方
法。
4. The method according to claim 1, wherein the solvent used for crystallization is water or a homogeneous solvent containing water.
【請求項5】2−アミノ−6−シクロプロピルアミノ−
9H−プリンの難水溶性塩。
5. Amino-6-cyclopropylamino-
A poorly water-soluble salt of 9H-purine.
【請求項6】2−アミノ−6−シクロプロピルアミノ−
9H−プリンの1メタンスルホン酸塩またはその溶媒和
物。
6. 2-Amino-6-cyclopropylamino-
9H-purine monomethanesulfonate or a solvate thereof.
【請求項7】2−アミノ−6−シクロプロピルアミノ−
9H−プリンの2塩酸塩またはその溶媒和物。
7. 2-Amino-6-cyclopropylamino-
9H-purine dihydrochloride or a solvate thereof.
【請求項8】2−アミノ−6−シクロプロピルアミノ−
9H−プリンの塩を、酸を添加した溶媒中で他の塩に交
換する方法。
8. 2-Amino-6-cyclopropylamino-
A method of exchanging a salt of 9H-purine for another salt in a solvent added with an acid.
【請求項9】2−アミノ−6−シクロプロピルアミノ−
9H−プリンの1メタンスルホン酸塩またはその溶媒和
物を塩酸を添加した溶媒中で塩を交換し、2−アミノ−
6−シクロプロピルアミノ−9H−プリンの2塩酸塩ま
たはその溶媒和物を得る請求項8記載の方法。
9. 2-Amino-6-cyclopropylamino-
The salt of 9H-purine monomethanesulfonate or its solvate was exchanged in a solvent containing hydrochloric acid to give 2-amino-purine.
The method according to claim 8, wherein 6-cyclopropylamino-9H-purine dihydrochloride or a solvate thereof is obtained.
JP2001247064A 2001-08-16 2001-08-16 Method for producing 2-amino-6-cyclopropylamino-9h- purine Pending JP2003055377A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Publications (1)

Publication Number Publication Date
JP2003055377A true JP2003055377A (en) 2003-02-26

Family

ID=19076477

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004089952A1 (en) * 2003-04-07 2004-10-21 Hetero Drugs Limited Novel crystalline forms of abacavir sulfate
WO2006133611A1 (en) 2005-06-16 2006-12-21 Zhe Jiang Medicine Co., Ltd. Xinchang Pharmaceutical Factory N2-quinolyl or isoquinolyl substituted purine derivatives, the preparation and uses thereof
WO2008128428A1 (en) 2007-04-20 2008-10-30 Zhe Jiang Medicine Co., Ltd Xinchang Pharmaceutical Factory 2, 6-dinitrogen-containing substituted purine derivatives, the preparation and uses thereof
WO2015027667A1 (en) 2013-08-30 2015-03-05 浙江医药股份有限公司新昌制药厂 2, 6-di-nitrogen-containing substituted purine derivative, and preparation method, pharmaceutical composition and use thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004089952A1 (en) * 2003-04-07 2004-10-21 Hetero Drugs Limited Novel crystalline forms of abacavir sulfate
WO2006133611A1 (en) 2005-06-16 2006-12-21 Zhe Jiang Medicine Co., Ltd. Xinchang Pharmaceutical Factory N2-quinolyl or isoquinolyl substituted purine derivatives, the preparation and uses thereof
WO2008128428A1 (en) 2007-04-20 2008-10-30 Zhe Jiang Medicine Co., Ltd Xinchang Pharmaceutical Factory 2, 6-dinitrogen-containing substituted purine derivatives, the preparation and uses thereof
WO2015027667A1 (en) 2013-08-30 2015-03-05 浙江医药股份有限公司新昌制药厂 2, 6-di-nitrogen-containing substituted purine derivative, and preparation method, pharmaceutical composition and use thereof

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