JPH05194518A - 6-mercaptopurine derivative and its production - Google Patents

6-mercaptopurine derivative and its production

Info

Publication number
JPH05194518A
JPH05194518A JP4044352A JP4435292A JPH05194518A JP H05194518 A JPH05194518 A JP H05194518A JP 4044352 A JP4044352 A JP 4044352A JP 4435292 A JP4435292 A JP 4435292A JP H05194518 A JPH05194518 A JP H05194518A
Authority
JP
Japan
Prior art keywords
group
hydrogen atom
compound
lower alkyl
formula
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
JP4044352A
Other languages
Japanese (ja)
Inventor
Kenji Tsujihara
健二 辻原
Teruya Motomiya
光弥 本宮
Motoaki Ohashi
元明 大橋
Tatsuo Kashida
龍雄 樫田
Yukio Akaike
幸男 赤池
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.)
Tanabe Seiyaku Co Ltd
Original Assignee
Tanabe Seiyaku Co Ltd
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 Tanabe Seiyaku Co Ltd filed Critical Tanabe Seiyaku Co Ltd
Priority to JP4044352A priority Critical patent/JPH05194518A/en
Publication of JPH05194518A publication Critical patent/JPH05194518A/en
Pending legal-status Critical Current

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Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/55Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

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  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

PURPOSE:To provide the subject new 6-mercaptopurine derivatives useful as a medicine for improving various kinds of cancer diseases, excellent in antineoplastic effect, cancer-immunostimulation effect, solubility in water and transmigration in the tissue and capable of parenteral administration (especially intravenous administration). CONSTITUTION:Compounds represented by formula I (R<1> is a 3 to 6C straight chain alkanoyl having NH2 or a lower alkylamino at the terminal. or a 3 to 6C branched alkanoyl having NH2 or a lower alkylamino; R<2> is R<21> or CH2OR<1>; R<22> is H, a lower-alkoxy-lower-alkyl, a lower-alkanoyloxy-lower-alkyl or an oxygen-containing 5-membered monoheterocyclic group which may be substituted; X is H or NHz) or pharmaceutically permissible salts thereof, e.g. 6-{[N-(t- butoxycarbonyl)-3-aminopropionyl]oxymethylthio} purine. The above-mentioned compound can be obtained by condensing a compound of formula II or its salt with a compound of formula III (R<11> is R<11> in which NH2 protected; Y is reactive residue) and subsequently removing the protecting groups of the resultant compound of formula IV (R<22> is R<1>).

Description

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

【0001】[0001]

【産業上の利用分野】本発明は新規6−メルカプトプリ
ン誘導体及びその製法に関する。
FIELD OF THE INVENTION The present invention relates to a novel 6-mercaptopurine derivative and a method for producing the same.

【0002】[0002]

【従来の技術】6−メルカプトプリンは抗腫瘍剤(特に
白血病治療剤)として臨床で使用されているが、骨髄機
能抑制、肝障害といった副作用が強く、安全域が狭いと
いう難点がある。又6−メルカプトプリンは水に不溶で
あるため、経口投与しかできないが、経口投与した場合
も、消化管から50%程度しか吸収されず、吸収効率が
悪いという難点がある〔クリニカル ファーマコロジー
アンド セラピューティクス(Cli.Pharma
col.Ther.)、第9巻、第180〜194頁
(1968年)〕。
2. Description of the Related Art 6-Mercaptopurine is clinically used as an antitumor agent (particularly, a leukemia therapeutic agent), but it has a serious side effect such as suppression of bone marrow function and liver damage, and has a drawback that its safety margin is narrow. Also, 6-mercaptopurine is insoluble in water and therefore can only be administered orally, but even when administered orally, only about 50% is absorbed from the digestive tract, and there is a drawback that the absorption efficiency is poor [Clinical Pharmacology and Cera. Pewtics (Cli.Pharma
col. Ther. ), Vol. 9, pp. 180-194 (1968)].

【0003】[0003]

【発明が解決しようとする課題】本発明は、優れた抗腫
瘍作用及び/又は腫瘍免疫増強作用を有し、非経口投与
可能な新規6−メルカプトプリン誘導体を提供するもの
である。
The present invention provides a novel 6-mercaptopurine derivative which has an excellent antitumor effect and / or tumor immunity enhancing effect and can be parenterally administered.

【0004】[0004]

【課題を解決するための手段】本発明は一般式〔I〕The present invention has the general formula [I]

【0005】[0005]

【化7】 [Chemical 7]

【0006】〔但し、Rは末端にアミノ基もしくは低
級アルキルアミノ基を有する炭素数3〜6の直鎖アルカ
ノイル基、又はアミノ基もしくは低級アルキルアミノ基
を有する炭素数3〜6の分枝鎖アルカノイル基、R
水素原子;低級アルコキシ低級アルキル基;低級アルカ
ノイルオキシ低級アルキル基;置換されていてもよい含
酸素5員複素単環式基又は式−CHO−Rで示され
る基、Xは水素原子又はアミノ基を表す。〕で示される
6−メルカプトプリン誘導体又はその薬理的に許容しう
る塩に関する。本発明の目的物〔I〕は6−メルカプト
プリンの6位硫黄原子上にアミノ基置換低級アルカノイ
ルオキシメチル基等を導入し、かつその9位を所望によ
り水親和性の基で保護した構造的特徴を有し、6−メル
カプトプリンと比較して、一層優れた水溶性と抗腫瘍活
性を示すため、とりわけ非経口投与に適した抗腫瘍剤と
しての諸特性を具備するものであり、さらには優れた腫
瘍免疫増強作用をも示すという特性をもつ有用な医薬化
合物である。
[Wherein R 1 is a linear alkanoyl group having 3 to 6 carbon atoms having an amino group or a lower alkylamino group at the terminal, or a branched chain having 3 to 6 carbon atoms having an amino group or a lower alkylamino group. Alkanoyl group, R 2 is hydrogen atom; lower alkoxy lower alkyl group; lower alkanoyloxy lower alkyl group; optionally substituted oxygen-containing 5-membered heteromonocyclic group or group represented by formula —CH 2 O—R 1. , X represents a hydrogen atom or an amino group. ] The present invention relates to a 6-mercaptopurine derivative or a pharmaceutically acceptable salt thereof. The object [I] of the present invention is a structure in which an amino group-substituted lower alkanoyloxymethyl group or the like is introduced onto the 6-position sulfur atom of 6-mercaptopurine, and the 9-position thereof is optionally protected with a water-affinitive group. Since it has characteristics and exhibits more excellent water solubility and antitumor activity as compared with 6-mercaptopurine, it has various properties as an antitumor agent particularly suitable for parenteral administration. It is a useful pharmaceutical compound having the property of exhibiting an excellent tumor immunity enhancing action.

【0007】本発明の目的物〔I〕の具体例としては、
低級アルキル基、低級アルコキシ基が炭素数1〜6、好
ましくは炭素数1〜4、低級アルカノイル基が炭素数2
〜6、好ましくは炭素数2〜4であり、又置換されてい
てもよい含酸素5員複素単環式基が炭素数2〜6のアル
カノイルオキシ基及び/又は炭素数2〜6のアルカノイ
ルオキシ−炭素数1〜6のアルキル基で置換されていて
もよいテトラヒドロフリル基である化合物があげられ
る。
Specific examples of the object [I] of the present invention include:
The lower alkyl group and the lower alkoxy group have 1 to 6 carbon atoms, preferably 1 to 4 carbon atoms, and the lower alkanoyl group has 2 carbon atoms.
To 6, preferably 2 to 4 carbon atoms, and the optionally substituted 5-membered oxygen-containing heteromonocyclic group is an alkanoyloxy group having 2 to 6 carbon atoms and / or an alkanoyloxy group having 2 to 6 carbon atoms. -A compound which is a tetrahydrofuryl group which may be substituted with an alkyl group having 1 to 6 carbon atoms.

【0008】この内、薬効上好ましい例としては、R
が2−アミノ−2,2−ジメチルアセチル基;3−アミ
ノプロピオニル基;3−メチルアミノプロピオニル基又
は3−アミノ−2−メチルプロピオニル基、Rが水素
原子;エトキシメチル基;ピバロイルオキシメチル基又
は(3−アミノプロピオニル)オキシメチル基、Xが水
素原子である化合物があげられる。
Of these, R 1 is a preferable example in view of drug efficacy.
Is 2-amino-2,2-dimethylacetyl group; 3-aminopropionyl group; 3-methylaminopropionyl group or 3-amino-2-methylpropionyl group, R 2 is hydrogen atom; ethoxymethyl group; pivaloyloxy Examples thereof include a methyl group or a (3-aminopropionyl) oxymethyl group, and a compound in which X is a hydrogen atom.

【0009】本発明の目的化合物〔I〕は遊離の形でも
又その薬理的に許容しうる塩の形のいずれでも医薬用途
に用いることができる。このような塩としては、例えば
塩酸塩、硫酸塩、リン酸塩、硝酸塩等の無機酸付加塩、
メタンスルホン酸塩、p−トルエンスルホン酸塩、フマ
ル酸塩、マレイン酸塩、酒石酸塩、クエン酸塩等の有機
酸付加塩をあげることができる。
The object compound [I] of the present invention can be used in medicinal use either in the free form or in the form of its pharmacologically acceptable salt. Examples of such salts include hydrochlorides, sulfates, phosphates, inorganic acid addition salts such as nitrates,
Examples thereof include organic acid addition salts such as methanesulfonate, p-toluenesulfonate, fumarate, maleate, tartrate and citrate.

【0010】目的化合物〔I〕又はその塩は例えば注射
剤として非経口的に投与できるほか、錠剤、カプセル
剤、散剤として経口投与することもできるが、とりわけ
非経口的に投与するのが好ましい。投与量は、投与方
法、患者の年令、体重、状態及び治療すべき疾患の種類
によっても異なるが、通常一日当り約0.5〜20mg
/kg、とりわけ2〜10mg/kg程度とするのが好
ましい。
The object compound [I] or a salt thereof can be administered parenterally, for example, as an injection, or can be orally administered as a tablet, capsule or powder, but parenterally is preferable. The dose varies depending on the administration method, age of the patient, weight, condition and kind of disease to be treated, but is usually about 0.5 to 20 mg per day.
/ Kg, especially 2 to 10 mg / kg is preferable.

【0011】本発明によれば、目的化合物〔I〕は一般
式〔II〕
According to the present invention, the target compound [I] has the general formula [II]

【0012】[0012]

【化8】 [Chemical 8]

【0013】〔但し、R21は水素原子;低級アルコキ
シ低級アルキル基;低級アルカノイルオキシ低級アルキ
ル基又は置換されていてもよい含酸素5員複素単環式基
を表し、他の記号は前記と同一意味を有する。〕で示さ
れる化合物又はその塩と一般式〔III〕
[Wherein R 21 represents a hydrogen atom; a lower alkoxy lower alkyl group; a lower alkanoyloxy lower alkyl group or an optionally substituted oxygen-containing 5-membered heteromonocyclic group, and other symbols are the same as defined above] Has meaning. ] The compound or its salt shown by these, and general formula [III]

【0014】[0014]

【化9】 [Chemical 9]

【0015】〔但し、R11は末端に保護されたアミノ
基もしくは低級アルキルアミノ基を有する炭素数3〜6
の直鎖アルカノイル基、又は保護されたアミノ基もしく
は低級アルキルアミノ基を有する炭素数3〜6の分枝鎖
アルカノイル基、Yは反応性残基を表す。〕で示される
エステル化合物とを縮合反応させて、一般式〔IV〕
[Wherein R 11 has 3 to 6 carbon atoms having a terminal protected amino group or lower alkylamino group]
Or a branched alkanoyl group having 3 to 6 carbon atoms, which has a protected amino group or a lower alkylamino group, and Y represents a reactive residue. ] The ester compound represented by

【0016】[0016]

【化10】 [Chemical 10]

【0017】〔但し、R22は水素原子;低級アルコキ
シ低級アルキル基;低級アルカノイルオキシ低級アルキ
ル基;置換されていてもよい含酸素5員複素単環式基又
は式−CHO−R11で示される基を表し、他の記号
は前記と同一意味を有する。〕で示される化合物を得た
後、R22が水素原子である場合には、所望により、更
に低級アルコキシ低級アルキルハライド又は低級アルカ
ノルオキシ低級アルキルハライドと縮合反応させ、つい
でR11の保護基を除去して製造することができる。
[Wherein R 22 is a hydrogen atom; a lower alkoxy lower alkyl group; a lower alkanoyloxy lower alkyl group; an optionally substituted oxygen-containing 5-membered heteromonocyclic group or the formula —CH 2 O—R 11 ; It represents a group shown and other symbols have the same meanings as described above. When R 22 is a hydrogen atom, a compound represented by the following formula is optionally further subjected to a condensation reaction with a lower alkoxy lower alkyl halide or a lower alkanoroxy lower alkyl halide, and then a protecting group for R 11 is added. It can be removed and manufactured.

【0018】原料化合物〔III〕及び〔IV〕におけ
るアミノ基又は低級アルキルアミノ基の保護基として
は、例えば低級アルコキシカルボニル基、ベンジルオキ
シカルボニル基、低級アルコキシ基置換ベンジルオキシ
カルボニル基等があげられる。また反応性残基(Y)と
してはハロゲン原子、低級アルキルスルホニルオキシ
基、ベンゼンスルホニルオキシ基、低級アルキル基置換
ベンゼンスルホニルオキシ基等を好適に用いることがで
きる。
Examples of the protecting group for the amino group or lower alkylamino group in the raw material compounds [III] and [IV] include a lower alkoxycarbonyl group, a benzyloxycarbonyl group and a lower alkoxy group-substituted benzyloxycarbonyl group. Further, as the reactive residue (Y), a halogen atom, a lower alkylsulfonyloxy group, a benzenesulfonyloxy group, a lower alkyl group-substituted benzenesulfonyloxy group and the like can be preferably used.

【0019】化合物〔II〕又はその塩とエステル化合
物〔III〕との縮合反応は、脱酸剤の存在下又は非存
在下で適宜実施することができる。脱酸剤としては炭酸
水素アルカリ金属、炭酸アルカリ金属、炭酸アルカリ土
類金属の如き無機塩基をいずれも好適に用いることがで
きる。化合物〔II〕の塩としては無機酸付加塩及び有
機酸付加塩をいずれも好適に用いることができる。本反
応において、原料化合物〔II〕のR21が水素原子の
場合、弱塩基性の脱酸剤(例えば、炭酸アルカリ土類金
属)を用いれば、R22が水素原子の化合物〔IV〕を
好適に得ることができ、一方、強塩基性の脱酸剤(例え
ば、炭酸アルカリ金属)を用いれば、R22が式−CH
O−R11で示される化合物〔IV〕を得ることがで
きる。反応は適当な溶媒(例えば、アセトン、アセトニ
トリル、酢酸エチル、塩化メチレン、テトラヒドロフラ
ン、ジメチルホルムアミド、ジメチルスルホキシドある
いはこれらの混合溶媒)中又は無溶媒で好適に実施でき
る。本反応は冷却〜加温下,とりわけ25℃〜60℃で
実施するのが好ましい。
The condensation reaction between the compound [II] or a salt thereof and the ester compound [III] can be appropriately carried out in the presence or absence of a deoxidizing agent. As the deoxidizing agent, any of inorganic bases such as alkali metal hydrogen carbonate, alkali metal carbonate and alkaline earth metal carbonate can be preferably used. As the salt of the compound [II], both an inorganic acid addition salt and an organic acid addition salt can be preferably used. In this reaction, when R 21 of the starting compound [II] is a hydrogen atom, a compound [IV] in which R 22 is a hydrogen atom is preferable if a weakly basic deoxidizing agent (for example, alkaline earth metal carbonate) is used. On the other hand, when a strongly basic deoxidizing agent (for example, alkali metal carbonate) is used, R 22 has the formula —CH 3.
A compound [IV] represented by 2 O-R 11 can be obtained. The reaction can be suitably carried out in a suitable solvent (for example, acetone, acetonitrile, ethyl acetate, methylene chloride, tetrahydrofuran, dimethylformamide, dimethylsulfoxide or a mixed solvent thereof) or without solvent. This reaction is preferably carried out under cooling to heating, particularly at 25 ° C to 60 ° C.

【0020】また、化合物〔IV〕においてR22が水
素原子である場合、当該化合物と低級アルコキシ低級ア
ルキルハライド又は低級アルカノイルオキシ低級アルキ
ルハライドとの縮合反応も、上記と同じ脱酸剤の存在下
又は非存在下、上記と同様の条件下で適宜実施すること
ができる。この縮合反応により、R22が低級アルコキ
シ低級アルキル基又は低級アルカノイルオキシ低級アル
キル基である化合物が得られる。かくして得た生成物に
おいて、アミノ基又は低級アルキルアミノ基の保護基
(R11)の除去は、保護基の種類に応じ、例えば加水
分解、加溶媒分解、酸処理、還元の如き常法により適宜
実施することができる。尚、本発明の原料化合物〔II
I〕は、新規化合物であり、例えば一般式〔V〕
When R 22 in the compound [IV] is a hydrogen atom, the condensation reaction of the compound with a lower alkoxy lower alkyl halide or a lower alkanoyloxy lower alkyl halide is also carried out in the presence of the same deoxidizing agent as described above or In the absence, it can be appropriately carried out under the same conditions as above. By this condensation reaction, a compound in which R 22 is a lower alkoxy lower alkyl group or a lower alkanoyloxy lower alkyl group is obtained. In the product thus obtained, the removal of the protecting group (R 11 ) for the amino group or lower alkylamino group can be carried out by a conventional method such as hydrolysis, solvolysis, acid treatment or reduction depending on the kind of the protecting group. Can be implemented. In addition, the raw material compound of the present invention [II
I] is a novel compound, for example, a compound represented by the general formula [V]

【0021】[0021]

【化11】 [Chemical 11]

【0022】〔但し、記号は前記と同一意味を有す
る。〕で示されるカルボン酸化合物と一般式〔VI〕
[However, the symbols have the same meanings as described above. ] And a carboxylic acid compound represented by the general formula [VI]

【0023】[0023]

【化12】 [Chemical 12]

【0024】〔但し、Yは反応性残基を表し、他は前
記と同一意味を有する。〕で示される化合物とを適当な
溶媒中(例えば、水−塩化メチレンの混合溶液、水−ク
ロロホルム混合溶媒等)、脱酸剤(例えば、炭酸水素ナ
トリウム等)の存在下で反応させて製造することができ
る。
[However, Y 1 represents a reactive residue, and the other has the same meaning as described above. ] The compound shown by these is manufactured by making it react in the presence of a deoxidizing agent (for example, sodium hydrogencarbonate etc.) in a suitable solvent (for example, a mixed solution of water-methylene chloride, a water-chloroform mixed solvent, etc.). be able to.

【0025】[0025]

【作用】[Action]

実験例 (サルコーマ180増殖抑制効果)一群5匹の雌性マウ
ス(ICR系、5週令)の鼠蹊部皮下にサルコーマ18
0細胞(1.5×10)を移植した。移植24時間後
からマウスに本発明の目的物溶液を1日1回5日間連続
経口投与し、投与終了から5日後の腫瘍重量を測定し
た。本発明の6−〔(3−アミノプロピオニル)オキシ
メチルチオ〕プリン・1塩酸塩及び9−〔(3−アミノ
プロピオニル)オキシメチル〕−6−〔(3−アミノプ
ロピオニル)オキシメチルチオ〕−9H−プリン・3塩
酸塩は用量依存的に腫瘍増殖を抑制し、又6−〔(3−
アミノプロピオニル)オキシメチルチオ〕プリン・1塩
酸塩の治療係数(最大耐量と腫瘍増殖を50%抑制する
投与量との比)は15以上の高い値を示した。
Experimental Example (Sarcoma 180 Growth Inhibitory Effect) Sarcoma 18 was subcutaneously in the groin of 5 female mice (ICR strain, 5 weeks old) per group.
0 cells (1.5 × 10 6 ) were transplanted. Twenty-four hours after the transplantation, the target solution of the present invention was orally administered to the mouse once a day for 5 consecutive days, and the tumor weight was measured 5 days after the end of the administration. 6-[(3-aminopropionyl) oxymethylthio] purine monohydrochloride and 9-[(3-aminopropionyl) oxymethyl] -6-[(3-aminopropionyl) oxymethylthio] -9H-purine of the present invention・ Trihydrochloride suppressed tumor growth in a dose-dependent manner, and 6-[(3-
The therapeutic index of aminopropionyl) oxymethylthio] purine monohydrochloride (the ratio between the maximum tolerated dose and the dose that suppresses tumor growth by 50%) was as high as 15 or more.

【0026】(腫瘍免疫増強効果)BALB/c系マウ
スの右鼠蹊部にフィブロサルコーマ細胞(1×10
を移植した(一次移植)。移植3日後に、本発明の目的
物溶液50mg/kgを1日1回5日間連続で、経口、
静脈内、腹腔内及び腫瘍内の4種類の方法で各々投与し
た。一次移植後10日目に、左鼠蹊部にフィブロサルコ
ーマ細胞(3×10)を再移植した(二次移植)。二
次移植後14日目までの二次移植腫瘍細胞の直径を計測
し、腫瘍免疫増強効果の指標とした。本発明の6−
〔(3−アミノプロピオニル)オキシメチルチオ〕プリ
ン・1塩酸塩は経口、静脈内、腹腔内及び腫瘍内のいず
れの投与経路においても、二次移植腫瘍の付着の抑制、
つまり強い腫瘍免疫増強作用を示した。
(Tumor immunity enhancing effect) Fibrosarcoma cells (1 × 10 6 ) were added to the right inguinal region of BALB / c mice.
Was transplanted (primary transplant). Three days after the transplantation, 50 mg / kg of the target solution of the present invention was orally administered once a day for 5 consecutive days.
It was administered by four methods of intravenous, intraperitoneal and intratumor. On the 10th day after the primary transplantation, fibrosarcoma cells (3 × 10 6 ) were retransplanted in the left inguinal region (secondary transplantation). The diameter of the secondary transplanted tumor cells up to 14 days after the secondary transplantation was measured and used as an index of the tumor immunity enhancing effect. 6-of the present invention
[(3-Aminopropionyl) oxymethylthio] purine monohydrochloride suppresses the adhesion of secondary transplant tumors by any of the oral, intravenous, intraperitoneal and intratumoral administration routes,
In other words, it showed a strong tumor immunity enhancing effect.

【0027】[0027]

【実施例】【Example】

実施例1 (1)N−(t−ブトキシカルボニル)−3−アミノプ
ロピオン酸クロロメチルエステル2.17g及びヨウ化
ナトリウム1.65gをアセトン20mlに加え、この
混合物に6−メルカプトプリン・1水和物1.55gの
ジメチルホルムアミド30ml溶液及び炭酸カルシウム
4.55gを加え、室温で3日間かくはんする。不溶物
をろ去後、ろ液を濃縮し、残査に酢酸エチル及び水を加
え、十分にかくはんした後、有機層を分取し、洗浄、乾
燥後、濃縮する。残査をシリカゲルカラムクロマトグラ
フィー(溶媒:クロロホルム−メタノール)で精製し
て、6−{〔N−(t−ブトキシカルボニル)−3−ア
ミノプロピオニル〕オキシメチルチオ}プリン1.80
gを白色粉末として得る。 FABMS(m/z):354(M+H) NMR(CDCl)δ:1.41(9H,s)、2.
56(2H,t,J=6.0Hz)、3.38(2H,
q,J=6.0Hz)、5.3(1H,br)、6.0
5(2H,s)、8.13(1H,s)、8.78(1
H,s)、10〜13.5(1H,br)
Example 1 (1) 2.17 g of N- (t-butoxycarbonyl) -3-aminopropionic acid chloromethyl ester and 1.65 g of sodium iodide were added to 20 ml of acetone, and 6-mercaptopurine monohydrate was added to this mixture. A solution of 1.55 g of the product in 30 ml of dimethylformamide and 4.55 g of calcium carbonate are added, and the mixture is stirred at room temperature for 3 days. The insoluble matter is removed by filtration, the filtrate is concentrated, ethyl acetate and water are added to the residue, and the mixture is thoroughly stirred, the organic layer is separated, washed, dried, and concentrated. The residue was purified by silica gel column chromatography (solvent: chloroform-methanol) to give 6-{[N- (t-butoxycarbonyl) -3-aminopropionyl] oxymethylthio} purine 1.80.
g as white powder. FABMS (m / z): 354 (M + H) + NMR (CDCl 3 ) δ: 1.41 (9H, s), 2.
56 (2H, t, J = 6.0 Hz), 3.38 (2H,
q, J = 6.0 Hz), 5.3 (1H, br), 6.0
5 (2H, s), 8.13 (1H, s), 8.78 (1
H, s), 10 to 13.5 (1H, br)

【0028】(2)本品1.70gをジオキサン10m
lに溶解し、氷冷かくはん下7.5N塩化水素−ジオキ
サン溶液3mlを加える。室温で3時間かくはん後、反
応液にエーテル50mlを加え、析出した白色粉末をろ
取し、洗浄、乾燥して、6−〔(3−アミノプロピオニ
ル)オキシメチルチオ〕プリン・2塩酸塩1.50gを
得る。 FABMS(m/z):254{M(遊離塩基)+H}
NMR(d−DMSO)δ:2.77(2H,t,J
=6.8Hz)、3.00(2H,m)、6.06(2
H,s)、8.60(1H,s)、8.80(1H,
s)、8.21(3H,br,DO交換)、8.9
(2H,br,DO交換)
(2) 1.70 g of this product was added to 10 m of dioxane.
Dissolve in 1 and add 3 ml of 7.5N hydrogen chloride-dioxane solution under ice-cooled stirring. After stirring at room temperature for 3 hours, 50 ml of ether was added to the reaction solution, the precipitated white powder was collected by filtration, washed and dried to give 1.50 g of 6-[(3-aminopropionyl) oxymethylthio] purine dihydrochloride. To get FABMS (m / z): 254 {M (free base) + H}
+ NMR (d 6 -DMSO) δ: 2.77 (2H, t, J
= 6.8 Hz), 3.00 (2H, m), 6.06 (2
H, s), 8.60 (1H, s), 8.80 (1H,
s), 8.21 (3H, br, D 2 O exchange), 8.9
(2H, br, D 2 O exchange)

【0029】(3)本品1.47gを水5mlに溶解
し、非イオン性吸着樹脂(商品名:HP−20;三菱化
成社製)充填カラムクロマトで精製(水で溶出)し、所
定の溶出液を集め、減圧下濃縮し、残査を凍結乾燥し
て、6−〔(3−アミノプロピオニル)オキシメチルチ
オ〕プリン・1塩酸塩1.00gを白色粉末として得
る。 FABMS(m/z):254{M(遊離塩基)+H}
NMR(DO)δ:3.0(2H,t,J=6.6H
z)、3.44(2H,t,J=6.6Hz)、6.0
3(2H,s)、8.41(1H,s)、8.64(1
H,s)
(3) 1.47 g of this product was dissolved in 5 ml of water and purified by column chromatography packed with a nonionic adsorption resin (trade name: HP-20; manufactured by Mitsubishi Kasei) (eluted with water) to give a predetermined amount. The eluates are collected, concentrated under reduced pressure, and the residue is freeze-dried to obtain 1.00 g of 6-[(3-aminopropionyl) oxymethylthio] purine monohydrochloride as a white powder. FABMS (m / z): 254 {M (free base) + H}
+ NMR (D 2 O) δ: 3.0 (2H, t, J = 6.6H
z), 3.44 (2H, t, J = 6.6Hz), 6.0
3 (2H, s), 8.41 (1H, s), 8.64 (1
H, s)

【0030】実施例2 (1)N−(t−ブトキシカルボニル)−3−アミノプ
ロピオン酸クロロメチルエステル7.13g及びヨウ化
ナトリウム5.40gをアセトン40mlに加え、この
混合物に6−メルカプトプリン・1水和物1.70gの
ジメチルホルムアミド40ml溶液及び炭酸カリウム
6.90gを加え、室温で3日間かくはんする。以下実
施例1−(1)と同様に処理して、9−{〔N−(t−
ブトキシカルボニル)−3−アミノプロピオニル〕オキ
シメチル}−6−{〔N−(t−ブトキシカルボニル)
−3−アミノプロピオニル〕オキシメチルチオ}−9H
−プリン2.50gを淡黄色カラメルとして得る。 FABMS(m/z):555(M+H) NMR(CDCl)δ:1.41(18H,s)、
2.56(4H,t,J=6.0Hz)、3.38(4
H,q,J=6.0Hz)、5.0(2H,br)、
6.04(2H,s)、6.19(2H,s)、8.2
5(1H,s)、8.84(1H,s)
Example 2 (1) 7.13 g of N- (t-butoxycarbonyl) -3-aminopropionic acid chloromethyl ester and 5.40 g of sodium iodide were added to 40 ml of acetone, and 6-mercaptopurine. A solution of 1.70 g of monohydrate in 40 ml of dimethylformamide and 6.90 g of potassium carbonate are added, and the mixture is stirred at room temperature for 3 days. Thereafter, the same process as in Example 1- (1) is performed to perform 9-{[N- (t-
Butoxycarbonyl) -3-aminopropionyl] oxymethyl} -6-{[N- (t-butoxycarbonyl)
-3-Aminopropionyl] oxymethylthio} -9H
-Obtain 2.50 g of purine as a pale yellow caramel. FABMS (m / z): 555 (M + H) + NMR (CDCl 3 ) δ: 1.41 (18H, s),
2.56 (4H, t, J = 6.0Hz), 3.38 (4
H, q, J = 6.0 Hz), 5.0 (2H, br),
6.04 (2H, s), 6.19 (2H, s), 8.2
5 (1H, s), 8.84 (1H, s)

【0031】(2)本品2.47gをジオキサン20m
lに溶解し、氷冷かくはん下7.5N塩化水素−ジオキ
サン溶液10mlを加える。以下実施例1−(2)と同
様に処理して、9−〔(3−アミノプロピオニル)オキ
シメチル〕−6−〔(3−アミノプロピオニル)オキシ
メチルチオ〕−9H−プリン・3塩酸塩1.90gを淡
黄色無定形粉末として得る。 FABMS(m/z):355{M(遊離塩基)+H}
NMR(d−DMSO)δ:2.76(4H,t−l
ike)、2.97(4H,t−like)、6.06
(2H,s)、6.26(2H,s)、8.25(7
H,br)、8.66(1H,s)、8.87(1H,
s)
(2) 2.47 g of this product was added to 20 m of dioxane.
It was dissolved in 1 and 10 ml of 7.5N hydrogen chloride-dioxane solution was added under ice-cooled stirring. Thereafter, the same treatment as in Example 1- (2) is performed to give 9-[(3-aminopropionyl) oxymethyl] -6-[(3-aminopropionyl) oxymethylthio] -9H-purine.3 hydrochloride 1. 90 g are obtained as a pale yellow amorphous powder. FABMS (m / z): 355 {M (free base) + H}
+ NMR (d 6 -DMSO) δ: 2.76 (4H, t-1)
ike), 2.97 (4H, t-like), 6.06
(2H, s), 6.26 (2H, s), 8.25 (7
H, br), 8.66 (1H, s), 8.87 (1H,
s)

【0032】実施例3 (1)9−β−D−リボフラノシル−6−メルカプト−
9H−プリン−2’,3’,5’−トリアセテイト2.
05g、N−(t−ブトキシカルボニル)−3−アミノ
プロピオン酸クロロメチルエステル1.43g、ヨウ化
ナトリウム1.35g及び炭酸カリウム2.0gを用
い、実施例1−(1)と同様に処理して、9−β−D−
リボフラノシル−6−{〔N−(t−ブトキシカルボニ
ル)−3−アミノプロピオニル〕オキシメチルチオ}−
9H−プリン−2’,3’,5’−トリアセテイト2.
93gを白色無定形粉末として得る。 FABMS(m/z):612(M+H) NMR(CDCl)δ:1.41(9H,s)、2.
08(3H,s)、2.13(3H,s)、2.16
(3H,s)2.56(2H,t,J=6.0Hz)、
3.39(2H,q,J=6.0Hz)、4.33〜
4.50(3H,m)、5.1(1H,br)、5.6
6(1H,t,J=5.0Hz)、5.96(1H,
t,J=5.0Hz)6.04(2H,s)、6.21
(1H,d,J=5.0Hz)、8.17(1H,
s)、8.81(1H,s)
Example 3 (1) 9-β-D-ribofuranosyl-6-mercapto-
9H-purine-2 ', 3', 5'-triacetate 2.
05 g, N- (t-butoxycarbonyl) -3-aminopropionic acid chloromethyl ester 1.43 g, sodium iodide 1.35 g and potassium carbonate 2.0 g were used and treated in the same manner as in Example 1- (1). , 9-β-D-
Ribofuranosyl-6-{[N- (t-butoxycarbonyl) -3-aminopropionyl] oxymethylthio}-
9H-purine-2 ', 3', 5'-triacetate 2.
93 g are obtained as a white amorphous powder. FABMS (m / z): 612 (M + H) + NMR (CDCl 3 ) δ: 1.41 (9H, s), 2.
08 (3H, s), 2.13 (3H, s), 2.16
(3H, s) 2.56 (2H, t, J = 6.0Hz),
3.39 (2H, q, J = 6.0Hz), 4.33 ~
4.50 (3H, m), 5.1 (1H, br), 5.6
6 (1H, t, J = 5.0 Hz), 5.96 (1H,
t, J = 5.0 Hz) 6.04 (2H, s), 6.21
(1H, d, J = 5.0 Hz), 8.17 (1H,
s), 8.81 (1H, s)

【0033】(2)本品2.90g及びアニソール77
0mgを塩化メチレン30mlに溶解し、トリフルオロ
酢酸3.5gを氷冷下加え、同温度で1時間、さらに室
温で2時間かくはん後、反応液を減圧下濃縮乾固する。
残査を塩化メチレン20mlに溶解し、そこに2.5N
塩化水素−ジオキサン溶液5mlを加え、減圧下濃縮乾
固する。残査を少量のアセトンに溶解し、イソプロピル
エーテルを加え、析出した白色粉末をろ取、乾燥して、
9−β−D−リボフラノシル−6−〔(3−アミノプロ
ピオニル)オキシメチルチオ〕−9H−プリン−2’,
3’,5’−トリアセテイト・1塩酸塩2.45gを白
色無定形粉末として得る。 FABMS(m/z):512{M(遊離塩基)+H}
NMR(DO)δ:2.12(3H,s)、2.17
(3H,s)、2.24(3H,s)、2.90(2
H,t,J=6.0Hz)、3.34(2H,t,J=
6.0Hz)、4.50(2H,m)、4.67(1
H,m)、5.78(1H,t,J=5.0Hz)、
6.01(1H,t,J=5.0Hz)6.03(2
H,s)、6.43(1H,d,J=5.0Hz)、
8.57(1H,s)、8.74(1H,s)
(2) 2.90 g of this product and anisole 77
0 mg is dissolved in 30 ml of methylene chloride, 3.5 g of trifluoroacetic acid is added under ice cooling, the mixture is stirred at the same temperature for 1 hour and further at room temperature for 2 hours, and the reaction solution is concentrated to dryness under reduced pressure.
Dissolve the residue in 20 ml of methylene chloride and add 2.5N to it.
Add 5 ml of hydrogen chloride-dioxane solution and concentrate to dryness under reduced pressure. The residue is dissolved in a small amount of acetone, isopropyl ether is added, the precipitated white powder is filtered and dried,
9-β-D-ribofuranosyl-6-[(3-aminopropionyl) oxymethylthio] -9H-purine-2 ′,
2.45 g of 3 ', 5'-triacetate monohydrochloride are obtained as white amorphous powder. FABMS (m / z): 512 {M (free base) + H}
+ NMR (D 2 O) δ: 2.12 (3H, s), 2.17
(3H, s), 2.24 (3H, s), 2.90 (2
H, t, J = 6.0 Hz, 3.34 (2H, t, J =
6.0 Hz), 4.50 (2H, m), 4.67 (1
H, m), 5.78 (1H, t, J = 5.0 Hz),
6.01 (1H, t, J = 5.0Hz) 6.03 (2
H, s), 6.43 (1H, d, J = 5.0 Hz),
8.57 (1H, s), 8.74 (1H, s)

【0034】実施例4 (1)6−{〔N−(t−ブトキシカルボニル)−3−
アミノプロピオニル〕オキシメチルチオ}プリン3.5
0g及びエトキシメチルクロリド1.12gをテトラヒ
ドロフラン70mlに溶解し、氷冷かくはん下トリエチ
ルアミン1.30gのテトラヒドロフラン30ml溶液
を滴下する。氷冷下3時間かくはん後、減圧下に反応液
を濃縮し、残査をクロロホルムに溶解後、洗浄する。有
機層を分取し、乾燥後、溶媒を留去し、残査をシリカゲ
ルクロマトグラフィー(溶媒:酢酸エチル−n−ヘキサ
ン)で精製して、9−エトキシメチル−6−{〔N−
(t−ブトキシカルボニル)−3−アミノプロピオニ
ル〕オキシメチルチオ}−9H−プリン1.73gを無
色カラメルとして得る。 FABMS(m/z):412(M+H) NMR(CDCl)δ:1.19(3H,t,J=
6.8Hz)、1.41(9H,s)、2.57(2
H,t,J=5.9Hz)、3.40(2H,q,J=
6.0Hz)、3.58(2H,q,J=6.8H
z)、5.13(1H,br)、5.65(2H,
s)、6.05(2H,s)、8.16(1H,s)、
8.83(1H,s)
Example 4 (1) 6-{[N- (t-butoxycarbonyl) -3-
Aminopropionyl] oxymethylthio} purine 3.5
0 g and 1.12 g of ethoxymethyl chloride are dissolved in 70 ml of tetrahydrofuran, and a solution of 1.30 g of triethylamine in 30 ml of tetrahydrofuran is added dropwise under stirring with ice cooling. After stirring under ice-cooling for 3 hours, the reaction solution is concentrated under reduced pressure, and the residue is dissolved in chloroform and washed. The organic layer was separated and dried, the solvent was evaporated, the residue was purified by silica gel chromatography (solvent: ethyl acetate-n-hexane), and 9-ethoxymethyl-6-{[N-
1.73 g of (t-butoxycarbonyl) -3-aminopropionyl] oxymethylthio} -9H-purine are obtained as colorless caramel. FABMS (m / z): 412 (M + H) + NMR (CDCl 3 ) δ: 1.19 (3H, t, J =
6.8Hz), 1.41 (9H, s), 2.57 (2
H, t, J = 5.9 Hz), 3.40 (2H, q, J =
6.0 Hz), 3.58 (2H, q, J = 6.8H
z), 5.13 (1H, br), 5.65 (2H,
s), 6.05 (2H, s), 8.16 (1H, s),
8.83 (1H, s)

【0035】(2)本品1.60gを塩化メチレン70
mlに溶解し、氷冷かくはん下トリフルオロ酢酸−エー
テル混液(13.2g−3.3g)を滴下する。室温で
一夜かくはんし、減圧下濃縮後、残査を水10mlに溶
解し、陰イオン交換樹脂(商品名:アンバーライトIR
A−68,C1型;オルガノ株式会社製)充填カラムク
ロマトで精製(水で溶出)し、所定の溶出液を集め、減
圧下濃縮する。濃縮液を実施例1−(3)と同様に処理
して、9−エトキシメチル−6−〔(3−アミノプロピ
オニル)オキシメチルチオ〕−9H−プリン・1塩酸塩
0.56gを白色無定形粉末として得る。 FABMS(m/z):312{M(遊離塩基)+
H)} NMR(DO)δ:1.20(3H,t,J=6.8
Hz)、2.92(2H,t,J=6.4Hz)、3.
35(2H,t,J=6.4Hz)、3.70(2H,
q,J=6.8Hz)、5.77(2H,s)、6.0
7(2H,s)、8.58(1H,s)、8.78(1
H,s)
(2) 70 g of methylene chloride was added to 1.60 g of this product.
Dissolve in ml and add trifluoroacetic acid-ether mixed solution (13.2 g-3.3 g) dropwise under ice-cooling stirring. After stirring overnight at room temperature and concentrating under reduced pressure, the residue was dissolved in 10 ml of water and the anion exchange resin (trade name: Amberlite IR
A-68, C1 type; manufactured by Organo Co., Ltd.) is purified by packed column chromatography (eluted with water), and a predetermined eluate is collected and concentrated under reduced pressure. The concentrate was treated in the same manner as in Example 1- (3) to give 0.56 g of 9-ethoxymethyl-6-[(3-aminopropionyl) oxymethylthio] -9H-purine monohydrochloride as a white amorphous powder. Get as. FABMS (m / z): 312 {M (free base) +
H)} + NMR (D 2 O) δ: 1.20 (3H, t, J = 6.8).
Hz), 2.92 (2H, t, J = 6.4Hz), 3.
35 (2H, t, J = 6.4Hz), 3.70 (2H,
q, J = 6.8 Hz), 5.77 (2H, s), 6.0
7 (2H, s), 8.58 (1H, s), 8.78 (1
H, s)

【0036】実施例5〜10 (1)対応原料化合物を実施例1−(1)、2−
(1)、3−(1)又は4−(1)と同様に処理して、
下記第1〜3表記載の生成物を得る。
Examples 5 to 10 (1) Corresponding raw material compounds were prepared according to Examples 1- (1) and 2-
Perform the same processing as (1), 3- (1) or 4- (1),
The products listed in Tables 1 to 3 below are obtained.

【0037】[0037]

【表1】 [Table 1]

【0038】[0038]

【表2】 [Table 2]

【0039】[0039]

【表3】 [Table 3]

【0040】(2)上記(1)記載の生成物を実施例1
−(2)及び(3)、2−(2)、3−(2)又は4−
(2)と同様に処理して、下記第4及び5表記載の目的
物を得る。
(2) The product described in (1) above was used in Example 1.
-(2) and (3), 2- (2), 3- (2) or 4-
The same treatment as in (2) is carried out to obtain the intended products shown in Tables 4 and 5 below.

【0041】[0041]

【表4】 [Table 4]

【0042】[0042]

【表5】 [Table 5]

【0043】参考例1 N−(t−ブトキシカルボニル)−3−アミノプロピオ
ン酸3.78g、テトラブチルアンモニウムスルフェイ
ト680mg及び炭酸水素ナトリウム6.72gを水3
0ml及び塩化メチレン30mlの混液に溶解し、この
溶液にクロロメトキシスルホニルクロリド3.96gの
塩化メチレン5ml溶液を氷冷かくはん下に滴下し、同
温度で1時間かくはんする。反応液から有機層を分取
し、洗浄、乾燥後、減圧下に溶媒を留去し、残査をシリ
カゲルカラムクロマトグラフィー(溶媒:酢酸エチル−
n−ヘキサン)で精製して、N−(t−ブトキシカルボ
ニル)−3−アミノプロピオン酸クロロメチルエステル
4.21gを無色油状物として得る。 NMR(CDCl)δ:1.44(9H,s)、2.
61(2H,t)、3.43(2H,q)、4.90
(1H,br)、5.71(2H,s)
Reference Example 1 3.78 g of N- (t-butoxycarbonyl) -3-aminopropionic acid, 680 mg of tetrabutylammonium sulfate and 6.72 g of sodium hydrogen carbonate were added to 3 parts of water.
It is dissolved in a mixed solution of 0 ml and 30 ml of methylene chloride, and a solution of 3.96 g of chloromethoxysulfonyl chloride in 5 ml of methylene chloride is added dropwise to the solution under ice-cooling stirring, and the mixture is stirred at the same temperature for 1 hour. The organic layer was separated from the reaction solution, washed and dried, the solvent was distilled off under reduced pressure, and the residue was subjected to silica gel column chromatography (solvent: ethyl acetate-
Purification with (n-hexane) gives 4.21 g of N- (t-butoxycarbonyl) -3-aminopropionic acid chloromethyl ester as a colorless oil. NMR (CDCl 3 ) δ: 1.44 (9H, s), 2.
61 (2H, t), 3.43 (2H, q), 4.90
(1H, br), 5.71 (2H, s)

【0044】参考例2〜5 対応原料化合物を参考例1と同様に処理して、下記第6
表記載の化合物を得る。
Reference Examples 2 to 5 The corresponding starting compound was treated in the same manner as in Reference Example 1 to give the following 6th
The compounds listed are obtained.

【0045】[0045]

【表6】 [Table 6]

【0046】[0046]

【発明の効果】本発明の目的物である6−メルカプトプ
リン誘導体〔I〕及びその薬理的に許容しうる塩は、6
−メルカプトプリン及び9−β−D−リボフラノシル−
6−ピバロイルオキシメチルチオ−9H−プリン−
2’,3’,5’−トリアセテイト等の既知化合物と比
較して、より一層優れた水溶性を有し、良好な組織移行
性を示すという、とりわけ静脈投与可能な医薬化合物と
しての特性を具備する。またこれら既知化合物と比較し
て、各種腫瘍(例えば、固形腫瘍、腹水肝癌、白血病
等)に対し、より一層優れた抗腫瘍作用を示し、さらに
腫瘍抗原を認識し、腫瘍細胞を拒絶する作用の増強、つ
まり腫瘍免疫増強作用をも有する。そのためこれらに罹
患した温血動物の生存期間を効果的に延長し及び/又は
腫瘍細胞の増殖を効果的に抑制することができる。かか
る抗腫瘍作用及び腫瘍免疫増強作用に基づき、本発明の
目的化合物〔I〕は、例えば、消化器癌(胃癌、直腸
癌、結腸癌等)、乳癌、肝臓癌、肺癌、膵臓癌、膀胱
癌、卵巣癌、子宮癌、皮膚癌、リンパ肉腫等の各疾患の
治療及び/又は予防に効果的に使用することができる。
The 6-mercaptopurine derivative [I] and its pharmacologically acceptable salts, which are the objects of the present invention, are
-Mercaptopurine and 9-β-D-ribofuranosyl-
6-pivaloyloxymethylthio-9H-purine-
Compared with known compounds such as 2 ′, 3 ′, 5′-triacetate, etc., it has a more excellent water-solubility and a good tissue translocation property, and is particularly characterized as a pharmaceutical compound that can be administered intravenously. To do. In addition, compared with these known compounds, it shows an even better antitumor effect against various tumors (eg, solid tumor, ascites liver cancer, leukemia, etc.), and further recognizes tumor antigens and rejects tumor cells. It also has an enhancing effect, that is, an effect of enhancing tumor immunity. Therefore, the survival period of warm-blooded animals affected by them can be effectively prolonged and / or the growth of tumor cells can be effectively suppressed. On the basis of such antitumor action and tumor immunopotentiation action, the object compound [I] of the present invention is, for example, digestive organ cancer (gastric cancer, rectal cancer, colon cancer, etc.), breast cancer, liver cancer, lung cancer, pancreatic cancer, bladder cancer. It can be effectively used for treating and / or preventing various diseases such as ovarian cancer, uterine cancer, skin cancer and lymphosarcoma.

フロントページの続き (72)発明者 樫田 龍雄 埼玉県北本市下石戸下703−3番地2−5 −402 (72)発明者 赤池 幸男 埼玉県大宮市大字東新井710番地50−11− 402Front page continuation (72) Inventor Tatsuo Kashida 703-3 Shimoishishita, Kitamoto City, Saitama Prefecture 2-5-402 (72) Inventor Yukio Akaike 710, Higashiarai, Omiya City, Saitama Prefecture 50-11-402

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】 一般式〔I〕 【化1】 〔但し、Rは末端にアミノ基もしくは低級アルキルア
ミノ基を有する炭素数3〜6の直鎖アルカノイル基、又
はアミノ基もしくは低級アルキルアミノ基を有する炭素
数3〜6の分枝鎖アルカノイル基、Rは水素原子;低
級アルコキシ低級アルキル基;低級アルカノイルオキシ
低級アルキル基;置換されていてもよい含酸素5員複素
単環式基又は式−CHO−Rで示される基、Xは水
素原子又はアミノ基を表す。〕で示される6−メルカプ
トプリン誘導体又はその薬理的に許容しうる塩。
1. A compound represented by the general formula [I]: [Wherein R 1 is a linear alkanoyl group having 3 to 6 carbon atoms having an amino group or a lower alkylamino group at the terminal, or a branched chain alkanoyl group having 3 to 6 carbon atoms having an amino group or a lower alkylamino group, R 2 is a hydrogen atom; a lower alkoxy lower alkyl group; a lower alkanoyloxy lower alkyl group; an optionally substituted oxygen-containing 5-membered heteromonocyclic group or a group represented by the formula —CH 2 O—R 1 , and X is Represents a hydrogen atom or an amino group. ] The 6-mercaptopurine derivative shown by these, or its pharmacologically acceptable salt.
【請求項2】 置換されていてもよい含酸素5員複素単
環式基が低級アルカノイルオキシ基及び/又は低級アル
カノイルオキシ低級アルキル基で置換されていてもよい
テトラヒドロフリル基である請求項1記載の化合物。
2. The optionally substituted oxygen-containing 5-membered heteromonocyclic group is a tetrahydrofuryl group optionally substituted with a lower alkanoyloxy group and / or a lower alkanoyloxy lower alkyl group. Compound of.
【請求項3】 Rが2−アミノ−2,2−ジメチルア
セチル基;3−アミノプロピオニル基;3−メチルアミ
ノプロピオニル基;3−アミノ−2−メチルプロピオニ
ル基又は6−アミノヘキサノイル基、Rが水素原子;
エトキシメチル基;ピバロイルオキシメチル基;3,4
−ジアセチルオキシ−5−アセチルオキシメチル−2−
テトラヒドロフリル基又は(3−アミノプロピオニル)
オキシメチル基である請求項1記載の化合物。
3. R 1 is 2-amino-2,2-dimethylacetyl group; 3-aminopropionyl group; 3-methylaminopropionyl group; 3-amino-2-methylpropionyl group or 6-aminohexanoyl group, R 2 is a hydrogen atom;
Ethoxymethyl group; Pivaloyloxymethyl group; 3,4
-Diacetyloxy-5-acetyloxymethyl-2-
Tetrahydrofuryl group or (3-aminopropionyl)
The compound according to claim 1, which is an oxymethyl group.
【請求項4】 Rがβ−アミノプロピオニル基、R
が水素原子、Xが水素原子である請求項1記載の化合
物。
4. R 1 is a β-aminopropionyl group, R 2
Is a hydrogen atom and X is a hydrogen atom.
【請求項5】 一般式〔II〕 【化2】 〔但し、R21は水素原子;低級アルコキシ低級アルキ
ル基;低級アルカノイルオキシ低級アルキル基又は置換
されていてもよい含酸素5員複素単環式基、Xは水素原
子又はアミノ基を表す。〕で示される化合物又はその塩
と一般式〔III〕 【化3】 〔但し、R11は末端に保護されたアミノ基もしくは低
級アルキルアミノ基を有する炭素数3〜6の直鎖アルカ
ノイル基、又は保護されたアミノ基もしくは低級アルキ
ルアミノ基を有する炭素数3〜6の分枝鎖アルカノイル
基、Yは反応性残基を表す。〕で示されるエステル化合
物とを縮合反応させて一般式〔IV〕 【化4】 〔但し、R22は水素原子;低級アルコキシ低級アルキ
ル基;低級アルカノイルオキシ低級アルキル基;置換さ
れていてもよい含酸素5員複素単環式基又は式−CH
O−R11で示される基を表し、他の記号は前記と同一
意味を有する。〕で示される化合物を得た後、R22
水素原子である場合には、所望により更に低級アルコキ
シ低級アルキルハライド又は低級アルカノイルオキシ低
級アルキルハライドと縮合反応させ、ついで保護基を除
去し、さらに所望により、生成物をその薬理的に許容し
うる塩とすることを特徴とする一般式〔I〕 【化5】 〔但し、Rは末端にアミノ基もしくは低級アルキルア
ミノ基を有する炭素数3〜6の直鎖アルカノイル基、又
はアミノ基もしくは低級アルキルアミノ基を有する炭素
数3〜6の分枝鎖アルカノイル基、Rは水素原子;低
級アルコキシ低級アルキル基;低級アルカノイルオキシ
低級アルキル基;置換されていてもよい含酸素5員複素
単環式基又は式−CHO−Rで示される基を表し、
他は前記と同一意味を有する。〕で示される6−メルカ
プトプリン誘導体又はその薬理的に許容しうる塩の製
法。
5. A compound represented by the general formula [II]: [Wherein R 21 represents a hydrogen atom; a lower alkoxy lower alkyl group; a lower alkanoyloxy lower alkyl group or an optionally substituted oxygen-containing 5-membered heteromonocyclic group, and X represents a hydrogen atom or an amino group. ] The compound shown by these or its salt, and general formula [III] [Wherein R 11 is a linear alkanoyl group having 3 to 6 carbon atoms and having a protected amino group or lower alkylamino group at the terminal, or a C 3 to 6 carbon atom having a protected amino group or lower alkylamino group] A branched chain alkanoyl group, Y represents a reactive residue. ] By the condensation reaction with an ester compound represented by the general formula [IV] [Wherein R 22 is a hydrogen atom; a lower alkoxy lower alkyl group; a lower alkanoyloxy lower alkyl group; an optionally substituted oxygen-containing 5-membered heteromonocyclic group or the formula —CH 2
It represents a group represented by OR 11 , and other symbols have the same meanings as described above. When R 22 is a hydrogen atom, a compound represented by the following formula is optionally further subjected to a condensation reaction with a lower alkoxy lower alkyl halide or a lower alkanoyloxy lower alkyl halide, and then the protecting group is removed to obtain a desired compound. According to the general formula [I]: wherein the product is a pharmaceutically acceptable salt thereof. [Wherein R 1 is a linear alkanoyl group having 3 to 6 carbon atoms having an amino group or a lower alkylamino group at the terminal, or a branched chain alkanoyl group having 3 to 6 carbon atoms having an amino group or a lower alkylamino group, R 2 represents a hydrogen atom; a lower alkoxy lower alkyl group; a lower alkanoyloxy lower alkyl group; an optionally substituted oxygen-containing 5-membered heteromonocyclic group or a group represented by the formula —CH 2 O—R 1 ,
Others have the same meaning as described above. ] The manufacturing method of the 6-mercaptopurine derivative shown by these, or its pharmacologically acceptable salt.
【請求項6】 一般式〔III〕 【化6】 〔但し、R11は末端に保護されたアミノ基もしくは低
級アルキルアミノ基を有する炭素数3〜6の直鎖アルカ
ノイル基、又は保護されたアミノ基もしくは低級アルキ
ルアミノ基を有する炭素数3〜6の分枝鎖アルカノイル
基、Yは反応性残基を表す。〕で示されるエステル化合
物。
6. A compound represented by the general formula [III]: [Wherein R 11 is a linear alkanoyl group having 3 to 6 carbon atoms and having a protected amino group or lower alkylamino group at the terminal, or a C 3 to 6 carbon atom having a protected amino group or lower alkylamino group] A branched chain alkanoyl group, Y represents a reactive residue. ] The ester compound shown by these.
JP4044352A 1992-01-16 1992-01-16 6-mercaptopurine derivative and its production Pending JPH05194518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4044352A JPH05194518A (en) 1992-01-16 1992-01-16 6-mercaptopurine derivative and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4044352A JPH05194518A (en) 1992-01-16 1992-01-16 6-mercaptopurine derivative and its production

Publications (1)

Publication Number Publication Date
JPH05194518A true JPH05194518A (en) 1993-08-03

Family

ID=12689126

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4044352A Pending JPH05194518A (en) 1992-01-16 1992-01-16 6-mercaptopurine derivative and its production

Country Status (1)

Country Link
JP (1) JPH05194518A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005512991A (en) * 2001-11-09 2005-05-12 エンゾン,インコーポレーテッド Polymer thiol-linked prodrug

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005512991A (en) * 2001-11-09 2005-05-12 エンゾン,インコーポレーテッド Polymer thiol-linked prodrug

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