JP3535565B2 - Benzopyran derivative - Google Patents

Benzopyran derivative

Info

Publication number
JP3535565B2
JP3535565B2 JP08487694A JP8487694A JP3535565B2 JP 3535565 B2 JP3535565 B2 JP 3535565B2 JP 08487694 A JP08487694 A JP 08487694A JP 8487694 A JP8487694 A JP 8487694A JP 3535565 B2 JP3535565 B2 JP 3535565B2
Authority
JP
Japan
Prior art keywords
benzopyran
bisfluoromethyl
mixture
group
compound
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.)
Expired - Fee Related
Application number
JP08487694A
Other languages
Japanese (ja)
Other versions
JPH0717965A (en
Inventor
弘 古賀
晴彦 佐藤
武宣 石澤
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.)
Chugai Pharmaceutical Co Ltd
Original Assignee
Chugai Pharmaceutical 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 Chugai Pharmaceutical Co Ltd filed Critical Chugai Pharmaceutical Co Ltd
Priority to JP08487694A priority Critical patent/JP3535565B2/en
Publication of JPH0717965A publication Critical patent/JPH0717965A/en
Application granted granted Critical
Publication of JP3535565B2 publication Critical patent/JP3535565B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Pyrane Compounds (AREA)

Description

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

【0001】[0001]

【産業上の利用分野】本発明はカリウムチャンネルオー
プナーとして強い血管拡張作用を有し、医薬として有用
なベンゾピラン誘導体及びその塩に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a benzopyran derivative having a strong vasodilatory action as a potassium channel opener and useful as a medicine, and a salt thereof.

【0002】[0002]

【従来の技術】従来より、一連のベンゾピラン誘導体が
種々の薬理作用を示すことは知られている。例えば特開
昭60−97974号、同61−47416号公報、同
63−165317号公報、同63−196581号公
報、同63−201182号公報、同63−30397
7号公報、同64−26578号公報、同64−380
87号公報、特開平2−129184号公報及びジャー
ナル・オブ・メディスィナル・ケミストリー(Jour
nal of Medicinal Chemistr
y)33巻6号,1529〜1541頁,1990年等
には、ベンゾピラン環の4位の炭素原子が窒素原子と直
接結合した様々なベンゾピラン誘導体が開示されてお
り、これらの化合物が抗高血圧作用を有し、心臓疾患等
の治療に使用されうることが記載されている。
2. Description of the Related Art It has been conventionally known that a series of benzopyran derivatives exhibit various pharmacological actions. For example, JP-A-60-97974, 61-47416, 63-165317, 63-196581, 63-201182, 63-30397.
No. 7, gazette 64-26578, gazette 64-380.
87, JP-A-2-129184, and Journal of Medicinal Chemistry (Jour.
nal of Medicinal Chemistr
y) Vol. 33, No. 6, pp. 1529 to 1541, 1990, etc. disclose various benzopyran derivatives in which the 4-position carbon atom of a benzopyran ring is directly bonded to a nitrogen atom, and these compounds have antihypertensive action. , And can be used for the treatment of heart diseases and the like.

【0003】またベンゾピラン環の4位の炭素原子が窒
素原子と直接結合していないベンゾピラン誘導体につい
ても、特開昭63−303977号公報、同64−38
087号公報、WO90/14346号公報、同92−
14439号公報、ジャーナル・オブ・ヘテロサイクリ
ック・ケミストリー(Journal of Hete
rocyclic Chemistry)11巻5号,
797〜802頁,1974年等に開示されている。
Further, benzopyran derivatives in which the 4-position carbon atom of the benzopyran ring is not directly bonded to the nitrogen atom are also disclosed in JP-A-63-303977 and 64-38.
087, WO 90/14346, and 92-
14439, Journal of Heterocyclic Chemistry (Journal of Hete)
Local Chemistry) Vol. 11, No. 5,
Pp. 797-802, 1974 etc.

【0004】WO90/14346号公報及び同92/
14439号公報には、ベンゾピラン環の4位がアミド
基又はチオアミド基で置換された、本発明化合物の一部
をその範囲に含む一般式の化合物が開示されている。さ
らにWO92/14439号公報には、本発明化合物を
その範囲に含む一般式の化合物が開示されており、それ
らの化合物が発毛促進剤として有用である旨記載されて
いる。すなわち、該公報には一般式
WO 90/14346 and 92 /
Japanese Patent No. 14439 discloses a compound of the general formula in which a part of the compound of the present invention in which the 4-position of a benzopyran ring is substituted with an amide group or a thioamide group is included. Further, WO92 / 14439 discloses compounds of the general formula containing the compound of the present invention in the range, and describes that these compounds are useful as a hair growth promoter. That is, the general formula in the publication is

【化2】 (式中、Xは=O,=S,=N−Z又は=CHNO
示し、ここでZは水素原子、低級アルキル基、アリール
基、水酸基、低級アルコキシ基、シアノ基、カルバモイ
ル基又はスルファモイル基を示す;Yは−NR
−OR10又は−SR11を、ここでR及びRは同
一又は異なって水素原子、水酸基、低級アルコキシ基、
シアノ基、置換基を有していてもよいアミノ基、置換基
を有していてもよい低級アルキル基、置換基を有してい
てもよい不飽和低級アルキル基、置換基を有していても
よいシクロアルキル基、置換基を有していてもよいアリ
ール基、置換基を有していてもよいヘテロアリール基を
示すか、又は一緒になって窒素原子とともに、置換基を
有していてもよい複素環を示し、R10及びR11は水
素原子、低級アルキル基又はアリール基を示す;R
水素原子、低級アルキル基又はアリール基を示すか、R
と直接結合して単結合を形成する;R及びRは同
一又は異なって水素原子もしくは水酸基を示すか、又は
一緒になって=Oを形成する;R及びRは、同一又
は異なって水素原子、置換基を有していてもよい低級ア
ルキル基を示すか、一緒になってポリメチレン基を示
す;R及びRは同一又は異なって水素原子、低級ア
ルキル基、低級ハロアルキル基、ハロゲン原子、低級ア
ルコキシ基、低級ハロアルコキシ基、アミノ基、アシル
アミノ基、ニトロ基、シアノ基、エステル基、低級アル
キルスルホニル基又はアリールスルホニル基を示すか、
又は一緒になって=N−O−N=を示す)で表される本
発明化合物を包含する化合物が開示されている。しかし
ながら、該公報には本発明化合物の構造及び名称も具体
的に記載されておらず、また本発明化合物がカリウムチ
ャンンネルオープナーとして予期できない顕著な効果を
示すことも何ら示唆されていない。
[Chemical 2] (In the formula, X represents ═O, ═S, ═N−Z or ═CHNO 2 , where Z is a hydrogen atom, a lower alkyl group, an aryl group, a hydroxyl group, a lower alkoxy group, a cyano group, a carbamoyl group or a sulfamoyl group. Represents a group; Y is —NR 8 R 9 ,
-OR 10 or -SR 11 , wherein R 8 and R 9 are the same or different and are a hydrogen atom, a hydroxyl group, a lower alkoxy group,
A cyano group, an amino group which may have a substituent, a lower alkyl group which may have a substituent, an unsaturated lower alkyl group which may have a substituent, which has a substituent Represents a cycloalkyl group which may be substituted, an aryl group which may have a substituent, a heteroaryl group which may have a substituent, or which together with a nitrogen atom, has a substituent. Represents a heterocycle, R 10 and R 11 represent a hydrogen atom, a lower alkyl group or an aryl group; R 1 represents a hydrogen atom, a lower alkyl group or an aryl group, or R
2 directly bonded to a form a single bond; R 2 and R 3 or represents a hydrogen atom or a hydroxyl group the same or different, or is it = O to form together; R 4 and R 5 are the same or R 6 and R 7 are different from each other and represent a hydrogen atom, a lower alkyl group which may have a substituent, or a polymethylene group together; R 6 and R 7 are the same or different and are a hydrogen atom, a lower alkyl group, a lower haloalkyl group Shows a halogen atom, a lower alkoxy group, a lower haloalkoxy group, an amino group, an acylamino group, a nitro group, a cyano group, an ester group, a lower alkylsulfonyl group or an arylsulfonyl group,
Or, taken together, represents = N-O-N =). However, the structure and the name of the compound of the present invention are not specifically described in the publication, and it is not suggested at all that the compound of the present invention exhibits a remarkable effect as a potassium channel opener.

【0005】[0005]

【発明が解決しようとする課題】従来の化合物のうち、
クロマカリムはカリウムチャンネルに作用する新しい種
類の降圧剤として開発中であるものの、その活性はまだ
充分ではない。またそれ以外の化合物についても、クロ
マカリムを上回る活性を持つものもあるが、肺等の器官
への障害を示したり、変異現性を示すなど安全性の面で
問題のあるものが多かった。
Among the conventional compounds,
Although cromakalim is under development as a new class of antihypertensive agents that act on potassium channels, its activity is not yet sufficient. In addition, although some of the other compounds have an activity higher than that of cromakalim, many of them have problems in safety such as damage to organs such as lungs and mutagenicity.

【0006】本発明者等はクロマカリムを始め、従来の
類似化合物よりも優れたカリウムチャンネル作用活性を
有し、かつ安全性の面でも問題の少ない化合物に関し
て、鋭意研究を重ねた結果、本発明化合物が従来の問題
点を解決して医薬として優れた効果を示すことを見出
し、本発明に至った。
The present inventors have conducted extensive studies on compounds such as cromakalim, which have a superior potassium channel action activity than conventional similar compounds and which are less problematic in terms of safety. As a result, the compounds of the present invention have been obtained. The present invention was found to solve the conventional problems and exhibits excellent effects as a medicine, and has reached the present invention.

【0007】[0007]

【課題を解決するための手段】本発明化合物は、一般式The compound of the present invention has the general formula

【化3】 (式中、R、XおよびYは以下の組合せのいずれかを示
す。)
[Chemical 3] (In the formula, R, X and Y represent one of the following combinations.)

【表2】 で表されるベンゾピラン誘導体及びその薬学上許容しう
る塩である。
[Table 2] And a pharmaceutically acceptable salt thereof.

【0008】これらの本発明化合物は、文献に具体的に
記載されていない新規化合物であり、優れたカリウムチ
ャンネル作用活性を有し、抗高血圧剤等の医薬として有
用な化合物である。
These compounds of the present invention are novel compounds not specifically described in the literature, have excellent potassium channel action activity, and are useful as pharmaceuticals such as antihypertensive agents.

【0009】本発明化合物は、例えば以下の様にして製
造することができる。一般式
The compound of the present invention can be produced, for example, as follows. General formula

【化4】 (式中、RおよびYは上記定義のとおりである)で表さ
れる化合物に、一般式
[Chemical 4] (Wherein R and Y are as defined above), a compound represented by the general formula

【化5】 (式中、Lはハロゲン原子、−OR、−S(O)
等の脱離基を示し、Xは前記と同一の意味を示す)で
表される化合物を塩基の存在下、不活性溶媒中で反応さ
せ、次いで還元、脱水反応を行うことによって得られ
る。
[Chemical 5] (In formula, L is a halogen atom, -OR < 1 > , -S (O) nR.
It is obtained by reacting a compound represented by a leaving group such as 2 or the like, and X has the same meaning as described above) in the presence of a base in an inert solvent, followed by reduction and dehydration reaction.

【0010】ここで用いられる塩基としては、例えば水
素化ナトリウム、ナトリウムアルコキシド、カリウムア
ルコキシド、アルキルリチウム、炭酸カリウム、炭酸ナ
トリウム、水酸化カリウムまたは水酸化ナトリウム等が
挙げられる。
Examples of the base used here include sodium hydride, sodium alkoxide, potassium alkoxide, alkyllithium, potassium carbonate, sodium carbonate, potassium hydroxide or sodium hydroxide.

【0011】また、本発明化合物は、前記式(III)で
表される化合物に、一般式(IV)の化合物の代わりに一
般式
The compound of the present invention is the same as the compound represented by the above formula (III), in place of the compound of the general formula (IV).

【化6】 (式中Xは前記と同一の意味を示す)で表される化合物
を反応させ、次いで同様の処理を行うことによっても得
ることができる。
[Chemical 6] It can also be obtained by reacting a compound represented by the formula (X has the same meaning as described above) and then performing the same treatment.

【0012】また、一般式In addition, the general formula

【化7】 (式中、RおよびXは前記と同一の意味を示す)で表さ
れる化合物と、不活性溶媒中、2−シアノエチルアミン
を適当な縮合剤を用いて反応させることによって得られ
る一般式
[Chemical 7] (Wherein R and X have the same meanings as described above), and a general formula obtained by reacting 2-cyanoethylamine with a suitable condensing agent in an inert solvent.

【化8】 (式中、RおよびYは前記と同一の意味を示す)で表さ
れる化合物を、ローソン試薬又は五硫化リンと反応させ
ることによってXが硫黄原子である本発明化合物を得る
こともできる。
[Chemical 8] A compound of the present invention in which X is a sulfur atom can also be obtained by reacting a compound represented by the formula (wherein R and Y have the same meanings as described above) with Lawesson's reagent or phosphorus pentasulfide.

【0013】ここで用いられる縮合剤としては、例えば
カルボニルジイミダゾール、トリフェニルホスフィンと
2,2’−ジピリジルジスルフィドなどのアミド化試薬
などが挙げられる。
Examples of the condensing agent used here include amidating reagents such as carbonyldiimidazole, triphenylphosphine and 2,2'-dipyridyldisulfide.

【0014】本発明化合物はクロマカリムを始めとする
従来のベンゾピラン系化合物と同等以上の優れたカリウ
ムチャンネル活性作用を示し、平滑筋弛緩剤すなわち、
抗喘息剤、抗高血圧剤、抗狭心症剤、尿失禁治療剤など
のカリウムチャンネルオープナーの活性成分として使用
しうる。
The compound of the present invention exhibits an excellent potassium channel activating effect which is equal to or better than that of conventional benzopyran compounds such as cromakalim, and is a smooth muscle relaxant, that is,
It may be used as an active ingredient of potassium channel openers such as anti-asthma agents, anti-hypertensive agents, anti-anginal agents, and therapeutic agents for urinary incontinence.

【0015】また、本発明化合物は、医薬品において重
要な要因となる安全性の面でも、従来化合物に見られた
肺障害等の器官への障害や変異原性も示さない安全性の
高い薬剤である。
Further, the compound of the present invention is a highly safe drug which does not show the damage to organs such as lung damage and mutagenicity which are seen in conventional compounds in terms of safety which is an important factor in pharmaceuticals. is there.

【0016】本発明化合物の投与量は、疾患の種類や重
度、患者に依存するが、一般に約0.0001〜1mg
/kg/日の範囲内であり、好ましくは、0.001〜
0.1mg/kg/日である。また投与経路は、経口投
与、非経口投与、局所投与など必要に応じて選択するこ
とができる。
The dose of the compound of the present invention depends on the kind and severity of the disease and the patient, but is generally about 0.0001 to 1 mg.
/ Kg / day, preferably 0.001 to
It is 0.1 mg / kg / day. Further, the administration route can be selected according to need such as oral administration, parenteral administration, and topical administration.

【0017】[0017]

【実施例】以下に本発明化合物の製造について、実施例
に基づいてさらに詳細に説明するが、本発明はこれらの
例によって何ら制限されるものではない。
EXAMPLES The production of the compounds of the present invention will be described in more detail based on the following examples, but the invention is not intended to be limited by these examples.

【0018】実施例1 N−(2−シアノエチル)−6−ペンタフルオロエチル
−2,2−ジメチル−2H−1−ベンゾピラン−4−カ
ルボアミド(化合物1)の合成
Example 1 N- (2-cyanoethyl) -6-pentafluoroethyl
-2,2-Dimethyl-2H-1-benzopyran-4-ca
Synthesis of luboamide (Compound 1)

【0019】6−ペンタフルオロエチル−3,4−ジヒ
ドロ−2,2−ジメチル−2H−1−ベンゾピラン−3
−オン2.6g及びジメチルホルムアミド28mlの混
合物を−5℃で攪拌下、第三級ブトキシカリウム1.1
g、2−シアノエチルイソチオシアネート2gのジメチ
ルホルムアミド溶液2mlを順次加え、5℃で15時間
攪拌する。2N塩酸を加え、エーテルで抽出する。有機
層を水洗乾燥後、溶媒を留去して得た残渣をシリカゲル
カラムクロマトグラフィ(展開液,ヘキサン:塩化メチ
レン=1:2)で精製すると、N−(2−シアノエチ
ル)−6−ペンタフルオロエチル−3−ヒドロキシ−
2,2−ジメチル−2H−1−ベンゾピラン−4−カル
ボアミドを2.6g得た。得られたN−(2−シアノエ
チル)−6−ペンタフルオロエチル−3−ヒドロキシ−
2,2−ジメチル−2H−1−ベンゾピラン−4−カル
ボアミド2.6g、酢酸15ml及びテトラヒドロフラ
ン45mlの混合物を氷冷攪拌下、水素化シアノホウ素
ナトリウム2.1gを加え、室温で13時間攪拌した。
混合物を酢酸エチルで希釈し、有機層を飽和重曹水及び
水で洗浄乾燥後、溶媒を留去すると、N−(2−シアノ
エチル)−6−ペンタフルオロエチル−3,4−ジヒド
ロ−3−ヒドロキシ−2,2−ジメチル−2H−1−ベ
ンゾピラン−4−カルボアミドを2.6gを得た。次い
でこれにピリジン90ml及びトシルクロライド3.4
gを加え、1時間加熱還流した。減圧下濃縮後、水、濃
塩酸を加え、塩化メチレンで抽出する。有機層を水洗乾
燥後、溶媒を留去して得た残渣をシリカゲルカラムクロ
マトグラフィ(展開液,ヘキサン:酢酸エチル=1:
1)で精製すると、融点163−164℃のN−(2−
シアノエチル)−6−ペンタフルオロエチル−2,2−
ジメチル−2H−1−ベンゾピラン−4−カルボアミド
460mgを得た。
6-Pentafluoroethyl-3,4-dihydro-2,2-dimethyl-2H-1-benzopyran-3
A mixture of 2.6 g of -one and 28 ml of dimethylformamide was stirred at -5 [deg.] C. to give potassium tertiary butoxide 1.1.
g, 2 ml of a dimethylformamide solution of 2 g of 2-cyanoethyl isothiocyanate are sequentially added, and the mixture is stirred at 5 ° C. for 15 hours. Add 2N hydrochloric acid and extract with ether. The organic layer was washed with water and dried, and then the solvent was distilled off to obtain a residue, which was purified by silica gel column chromatography (developing solution, hexane: methylene chloride = 1: 2) to give N- (2-cyanoethyl) -6-pentafluoroethyl. -3-hydroxy-
2.6 g of 2,2-dimethyl-2H-1-benzopyran-4-carboxamide was obtained. Obtained N- (2-cyanoethyl) -6-pentafluoroethyl-3-hydroxy-
A mixture of 2.6 g of 2,2-dimethyl-2H-1-benzopyran-4-carbamide, 15 ml of acetic acid and 45 ml of tetrahydrofuran was added with 2.1 g of sodium cyanoborohydride under ice-cooling stirring, and the mixture was stirred at room temperature for 13 hours.
The mixture was diluted with ethyl acetate, the organic layer was washed with saturated aqueous sodium hydrogen carbonate and water and dried, and the solvent was evaporated to give N- (2-cyanoethyl) -6-pentafluoroethyl-3,4-dihydro-3-hydroxy. 2.6 g of 2,2,2-dimethyl-2H-1-benzopyran-4-carboxamide was obtained. Then add 90 ml of pyridine and 3.4 of tosyl chloride.
g was added and the mixture was heated under reflux for 1 hour. After concentration under reduced pressure, water and concentrated hydrochloric acid are added, and the mixture is extracted with methylene chloride. The organic layer was washed with water and dried, and then the solvent was distilled off to obtain a residue, which was subjected to silica gel column chromatography (developing solution, hexane: ethyl acetate = 1: 1).
Purified in 1), N- (2-
Cyanoethyl) -6-pentafluoroethyl-2,2-
460 mg of dimethyl-2H-1-benzopyran-4-carbamide was obtained.

【0020】NMR(CDCl,δ):1.49(6
H,s),2.71(2H,t),3.64(2H,
q),6.04(1H,s),6.20−6.52(1
H,m),6.85(1H,d),7.36(1H,d
d),7.74(1H,d) MSm/z:374(M
NMR (CDCl 3 , δ): 1.49 (6
H, s), 2.71 (2H, t), 3.64 (2H,
q), 6.04 (1H, s), 6.20-6.52 (1
H, m), 6.85 (1H, d), 7.36 (1H, d
d), 7.74 (1H, d) MS m / z: 374 (M + ).

【0021】実施例2 N−(2−シアノエチル)−6−ペンタフルオロエチル
−2,2−ジメチル−2H−1−ベンゾピラン−4−カ
ルボチオアミド(化合物2)の合成
Example 2 N- (2-cyanoethyl) -6-pentafluoroethyl
-2,2-Dimethyl-2H-1-benzopyran-4-ca
Synthesis of rubothioamide (compound 2)

【0022】実施例1に従って得られたN−(2−シア
ノエチル)−6−ペンタフルオロエチル−2,2−ジメ
チル−2H−1−ベンゾピラン−4−カルボアミド21
0mg及びベンゼン20mlの混合物にローソン試薬2
27mgを加え、1時間加熱還流した。混合物を減圧下
濃縮後、得られた残渣をシリカゲルカラムクロマトグラ
フィ(展開液:塩化メチレン)で精製すると、融点12
4−125℃のN−(2−シアノエチル)−6−ペンタ
フルオロエチル−2,2−ジメチル−2H−1−ベンゾ
ピラン−4−カルボチオアミド180mgを得た。
N- (2-cyanoethyl) -6-pentafluoroethyl-2,2-dimethyl-2H-1-benzopyran-4-carboxamide 21 obtained according to Example 1.
Lawson Reagent 2 in a mixture of 0 mg and 20 ml benzene
27 mg was added and the mixture was heated under reflux for 1 hour. The mixture was concentrated under reduced pressure, and the obtained residue was purified by silica gel column chromatography (developing solution: methylene chloride) to give a melting point of 12
180 mg of N- (2-cyanoethyl) -6-pentafluoroethyl-2,2-dimethyl-2H-1-benzopyran-4-carbothioamide at 4-125 ° C was obtained.

【0023】NMR(CDCl,δ):1.48(6
H,s),2.84(2H,t),3.96(2H,
q),5.83(1H,s),6.83(1H,d),
7.32(1H,dd),7.53(1H,d),7.
79−8.21(1H,m) MSm/z:390(M
NMR (CDCl 3 , δ): 1.48 (6
H, s), 2.84 (2H, t), 3.96 (2H,
q), 5.83 (1H, s), 6.83 (1H, d),
7.32 (1H, dd), 7.53 (1H, d), 7.
79-8.21 (1H, m) MS m / z: 390 (M + ).

【0024】実施例3 N−(2−シアノエチル)−2,2−ビスフルオロメチ
ル−6−トリフルオロメチル−2H−1−ベンゾピラン
−4−カルボチオアミド(化合物3)の合成
Example 3 N- (2-cyanoethyl) -2,2-bisfluoromethyi
Le-6-trifluoromethyl-2H-1-benzopyran
Synthesis of 4-carbothioamide (Compound 3)

【0025】(1)2,2−ビスフルオロメチル−3,
4−ジヒドロ−6−ニトロ−2H−1−ベンゾピラン−
4−オン4.05g及び乾燥ベンゼン10mlの混合物
に氷冷下で攪拌しながらトリメチルシリルシアニド2.
52ml及びヨウ化亜鉛0.82gを加え室温で12時
間攪拌した。さらにピリジン8ml及びオキシ塩化リン
4.41mlを加え、6時間加熱還留した。反応混合物
に氷水を加え塩酸酸性にして塩化メチレンで抽出した。
有機層を水洗乾燥後、減圧下濃縮して得られた残渣をシ
リカゲルカラムクロマトグラフィ(溶出溶媒,塩化メチ
レン:ヘキサン=7:3)に付し、融点136−137
℃の2,2−ビスフルオロメチル−6−ニトロ−2H−
1−ベンゾピラン−4−カルボニトリル0.99gを得
た。
(1) 2,2-bisfluoromethyl-3,
4-dihydro-6-nitro-2H-1-benzopyran-
Trimethylsilyl cyanide 2. was added to a mixture of 4.05 g of 4-one and 10 ml of dry benzene with stirring under ice cooling.
52 ml and 0.82 g of zinc iodide were added, and the mixture was stirred at room temperature for 12 hours. Further, 8 ml of pyridine and 4.41 ml of phosphorus oxychloride were added, and the mixture was heated under reflux for 6 hours. Ice water was added to the reaction mixture to acidify the hydrochloric acid, and the mixture was extracted with methylene chloride.
The organic layer was washed with water, dried, and concentrated under reduced pressure. The obtained residue was subjected to silica gel column chromatography (eluting solvent, methylene chloride: hexane = 7: 3) to give a melting point of 136-137.
2,2-bisfluoromethyl-6-nitro-2H- at ° C.
0.99 g of 1-benzopyran-4-carbonitrile was obtained.

【0026】H−NMR(CDCl,δ):4.5
9(4H,d),6.53(1H,s),7.03(1
H,d),8.10−8.40(2H,m) MS:266(M
H 1 -NMR (CDCl 3 , δ): 4.5
9 (4H, d), 6.53 (1H, s), 7.03 (1
H, d), 8.10-8.40 (2H, m) MS: 266 (M + ).

【0027】(2)2,2−ビスフルオロメチル−6−
ニトロ−2H−1−ベンゾピラン−4−カルボニトリル
0.93g、酢酸20ml、水10ml及び硫酸10m
lの混合物を4.5時間加熱還流した。反応混合物を氷
水に注ぎ、析出した結晶を濾取し、融点171−172
℃の2,2−ビスフルオロメチル−6−ニトロ−2H−
1−ベンゾピラン−4−カルボン酸0.83gを得た。
(2) 2,2-bisfluoromethyl-6-
Nitro-2H-1-benzopyran-4-carbonitrile 0.93 g, acetic acid 20 ml, water 10 ml and sulfuric acid 10 m
The mixture of 1 was heated to reflux for 4.5 hours. The reaction mixture was poured into ice water, and the precipitated crystals were collected by filtration and had a melting point of 171-172.
2,2-bisfluoromethyl-6-nitro-2H- at ° C.
0.83 g of 1-benzopyran-4-carboxylic acid was obtained.

【0028】 IR(KBr)cm−1=1698(C=O) MS:285(MIR (KBr) cm −1 = 1698 (C═O) MS: 285 (M + ).

【0029】(3)2,2−ビスフルオロメチル−6−
ニトロ−2H−1−ベンゾピラン−4−カルボン酸4
1.7g、硫酸20ml及びエチルアルコール300m
lの混合物を6時間加熱還流した。反応混合物を氷水に
注ぎ、析出した結晶を濾取し、融点96−98℃の2,
2−ビスフルオロメチル−6−ニトロ−2H−1−ベン
ゾピラン−4−カルボン酸エチルエステル42.7gを
得た。
(3) 2,2-bisfluoromethyl-6-
Nitro-2H-1-benzopyran-4-carboxylic acid 4
1.7 g, sulfuric acid 20 ml and ethyl alcohol 300 m
The mixture of 1 was heated to reflux for 6 hours. The reaction mixture was poured into ice water, the precipitated crystals were collected by filtration, and had a melting point of 96-98 ° C.
2-2.7 g of 2-bisfluoromethyl-6-nitro-2H-1-benzopyran-4-carboxylic acid ethyl ester was obtained.

【0030】H−NMR(CDCl,δ):1.4
2(3H,t),4.38(2H,q),4.58(4
H,d),6.69(1H,s),6.94(1H,
d),8.07(1H,dd),8.92(1H,d) MS:313(M
H 1 -NMR (CDCl 3 , δ): 1.4
2 (3H, t), 4.38 (2H, q), 4.58 (4
H, d), 6.69 (1H, s), 6.94 (1H,
d), 8.07 (1H, dd), 8.92 (1H, d) MS: 313 (M + ).

【0031】(4)2,2−ビスフルオロメチル−6−
ニトロ−2H−1−ベンゾピラン−4−カルボン酸エチ
ルエステル42.0g、塩化第一スズ88g及びエチル
アルコール500mlの混合物を2時間加熱還流した。
反応混合物に2規定水酸化ナトリウム水溶液を加え酢酸
エチルにて抽出した。有機層を飽和食塩水で洗浄後硫酸
ナトリウムにて乾燥し、減圧下濃縮することにより6−
アミノ−2,2−ビスフルオロメチル−2H−1−ベン
ゾピラン−4−カルボン酸エチルエステル5.2gを油
状物として得た。
(4) 2,2-bisfluoromethyl-6-
A mixture of 42.0 g of nitro-2H-1-benzopyran-4-carboxylic acid ethyl ester, 88 g of stannous chloride and 500 ml of ethyl alcohol was heated under reflux for 2 hours.
A 2N aqueous sodium hydroxide solution was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over sodium sulfate, and concentrated under reduced pressure to give 6-
Amino-2,2-bisfluoromethyl-2H-1-benzopyran-4-carboxylic acid ethyl ester (5.2 g) was obtained as an oil.

【0032】H−NMR(CDCl,δ):1.3
1(3H,t),3.0−4.0(2H,m),4.3
6(2H,q),4.55(4H,d),6.2−6.
9(3H,m),7.26(1H,d) MS:283(M
H 1 -NMR (CDCl 3 , δ): 1.3
1 (3H, t), 3.0-4.0 (2H, m), 4.3
6 (2H, q), 4.55 (4H, d), 6.2-6.
9 (3H, m), 7.26 (1H, d) MS: 283 (M + ).

【0033】(5)6−アミノ−2,2−ビスフルオロ
メチル−2H−1−ベンゾピラン−4−カルボン酸エチ
ルエステル4.0g、硫酸1.66g及び水40mlの
混合物に氷冷下、亜硝酸ナトリウム1.09g、塩化メ
チレン10ml及び水10mlの混合物を加え、10分
間氷冷下攪拌した。さらに反応混合物にヨウ化カリウム
2.85g及び水5mlの混合物を加え、室温下1.5
時間攪拌した。反応混合液に水を加え、塩化メチレンに
て抽出した。有機層を20%亜硫酸ナトリウム水溶液及
び飽和食塩水で洗浄後、硫酸ナトリウムにて乾燥し、減
圧下濃縮し得られた残渣をシリカゲルカラムクロマトグ
ラフィ(溶出溶媒,酢酸エチル:ヘキサン=1:1)に
付し、融点89−90℃の2,2−ビスフルオロメチル
−6−ヨウド−2H−1−ベンゾピラン−4−カルボン
酸エチルエステル3.67gを得た。
(5) A mixture of 6-amino-2,2-bisfluoromethyl-2H-1-benzopyran-4-carboxylic acid ethyl ester (4.0 g), sulfuric acid (1.66 g) and water (40 ml) was cooled with ice under nitrous acid. A mixture of 1.09 g of sodium, 10 ml of methylene chloride and 10 ml of water was added, and the mixture was stirred for 10 minutes under ice cooling. Furthermore, a mixture of 2.85 g of potassium iodide and 5 ml of water was added to the reaction mixture, and the mixture was stirred at room temperature for 1.5
Stir for hours. Water was added to the reaction mixture, and the mixture was extracted with methylene chloride. The organic layer was washed with 20% aqueous sodium sulfite solution and saturated brine, dried over sodium sulfate, and concentrated under reduced pressure. The obtained residue was subjected to silica gel column chromatography (eluting solvent, ethyl acetate: hexane = 1: 1). Then, 3.67 g of 2,2-bisfluoromethyl-6-iodo-2H-1-benzopyran-4-carboxylic acid ethyl ester having a melting point of 89-90 ° C. was obtained.

【0034】H−NMR(CDCl,δ):1.3
9(3H,t),4.33(2H,q),4.58(4
H,d),6.60(1H,s),6.67(1H,
d),7.02(1H,dd),8.30(1H,d) MS:394(M
H 1 -NMR (CDCl 3 , δ): 1.3
9 (3H, t), 4.33 (2H, q), 4.58 (4
H, d), 6.60 (1H, s), 6.67 (1H,
d), 7.02 (1H, dd), 8.30 (1H, d) MS: 394 (M + ).

【0035】(6)2,2−ビスフルオロメチル−6−
ヨウド−2H−1−ベンゾピラン−4−カルボン酸エチ
ルエステル1.00g、トリフルオロ酢酸カリウム0.
84g、ヨウ化第一銅1.18g、トルエン4ml及び
N,N−ジメチルホルムアミド10mlの混合物を窒素
ガス雰囲気下、トルエンを除きながら5.5時間150
℃にて加熱攪拌した。反応混合物に2規定塩酸及び酢酸
エチルの混合液を加えセライトを用いて不溶物を濾別し
た。濾液より有機層を分取し、水層は酢酸エチルにて抽
出した。得られた有機層を合わせて飽和食塩水にて洗浄
し、硫酸ナトリウムにて乾燥後、減圧下濃縮し、得られ
た残渣をシリカゲルカラムクロマトグラフィ(溶出溶
媒,酢酸エチル:ヘキサン=10:1)に付し、2,2
−ビスフルオロメチル−6−トリフルオロメチル−2H
−1−ベンゾピラン−4−カルボン酸エチルエステル
0.51gを油状物として得た。
(6) 2,2-bisfluoromethyl-6-
Iodo-2H-1-benzopyran-4-carboxylic acid ethyl ester 1.00 g, potassium trifluoroacetate 0.
A mixture of 84 g, cuprous iodide (1.18 g), toluene (4 ml) and N, N-dimethylformamide (10 ml) was removed under a nitrogen gas atmosphere while removing toluene for 5.5 hours.
The mixture was heated and stirred at ℃. A mixture of 2N hydrochloric acid and ethyl acetate was added to the reaction mixture, and the insoluble material was filtered off using Celite. The organic layer was separated from the filtrate, and the aqueous layer was extracted with ethyl acetate. The obtained organic layers were combined, washed with saturated brine, dried over sodium sulfate, and concentrated under reduced pressure, and the obtained residue was subjected to silica gel column chromatography (eluting solvent, ethyl acetate: hexane = 10: 1). Attached, 2, 2
-Bisfluoromethyl-6-trifluoromethyl-2H
0.51 g of -1-benzopyran-4-carboxylic acid ethyl ester was obtained as an oil.

【0036】H−NMR(CDCl,δ):1.3
6(3H,t),4.31(2H,q),4.53(4
H,d),6.63(1H,s),6.94(1H,
d),7.47(1H,dd),8.31(1H,d) MS:336(M
H 1 -NMR (CDCl 3 , δ): 1.3
6 (3H, t), 4.31 (2H, q), 4.53 (4
H, d), 6.63 (1H, s), 6.94 (1H,
d), 7.47 (1H, dd), 8.31 (1H, d) MS: 336 (M + ).

【0037】(7)2,2−ビスフルオロメチル−6−
トリフルオロメチル−2H−1−ベンゾピラン−4−カ
ルボン酸エチルエステル0.51g、水酸化カリウム
0.13g及びエチルアルコール10mlの混合物を室
温下、2時間攪拌した。反応混合物に氷水及び塩酸を加
え、析出した結晶を濾取することにより、融点162−
163℃の2,2−ビスフルオロメチル−6−トリフル
オロメチル−2H−1−ベンゾピラン−4−カルボン酸
0.43gを得た。
(7) 2,2-bisfluoromethyl-6-
A mixture of 0.51 g of trifluoromethyl-2H-1-benzopyran-4-carboxylic acid ethyl ester, 0.13 g of potassium hydroxide and 10 ml of ethyl alcohol was stirred at room temperature for 2 hours. Ice water and hydrochloric acid were added to the reaction mixture, and the precipitated crystals were collected by filtration to give a melting point 162-
0.43 g of 2,2-bisfluoromethyl-6-trifluoromethyl-2H-1-benzopyran-4-carboxylic acid at 163 ° C was obtained.

【0038】H−NMR(CDCl,δ):4.6
0(4H,d),6.69(1H,s),7.00(1
H,d),7.45(1H,dd),8.30(1H,
d) MS:308(M
H 1 -NMR (CDCl 3 , δ): 4.6
0 (4H, d), 6.69 (1H, s), 7.00 (1
H, d), 7.45 (1H, dd), 8.30 (1H,
d) MS: 308 (M + ).

【0039】(8)2,2−ビスフルオロメチル−6−
トリフルオロメチル−2H−1−ベンゾピラン−4−カ
ルボン酸0.20g、N,N−カルボニルジイミダゾー
ル0.12g及びテトラヒドロフラン3mlの混合物を
室温下1時間攪拌した。反応混合物に2−シアノエチル
アミン0.06gを加え、さらに室温下14時間攪拌し
た。反応混合物を減圧下濃縮し、得られた残渣をシリカ
ゲルカラムクロマトグラフィ(溶出溶媒,酢酸エチル:
ヘキサン=1:1)に付し、融点135−136℃のN
−(2−シアノエチル)−2,2−ビスフルオロメチル
−6−トリフルオロメチル−2H−1−ベンゾピラン−
4−カルボアミド0.20gを得た。
(8) 2,2-bisfluoromethyl-6-
A mixture of 0.20 g of trifluoromethyl-2H-1-benzopyran-4-carboxylic acid, 0.12 g of N, N-carbonyldiimidazole and 3 ml of tetrahydrofuran was stirred at room temperature for 1 hour. 2-Cyanoethylamine (0.06 g) was added to the reaction mixture, and the mixture was further stirred at room temperature for 14 hours. The reaction mixture was concentrated under reduced pressure, and the obtained residue was subjected to silica gel column chromatography (eluting solvent, ethyl acetate:
Hexane = 1: 1), melting point 135-136 ° C N
-(2-Cyanoethyl) -2,2-bisfluoromethyl-6-trifluoromethyl-2H-1-benzopyran-
0.20 g of 4-carbamide was obtained.

【0040】H−NMR(CDCl,δ):2.7
0(2H,t),3.63(2H,q),4.57(4
H,d),6.08(1H,s),6.5−7.3(1
H,m),6.98(1H,d),7.50(1H,d
d),7.84(1H,d) MS:360(M
H 1 -NMR (CDCl 3 , δ): 2.7
0 (2H, t), 3.63 (2H, q), 4.57 (4
H, d), 6.08 (1H, s), 6.5-7.3 (1
H, m), 6.98 (1H, d), 7.50 (1H, d)
d), 7.84 (1H, d) MS: 360 (M + ).

【0041】(9)N−(2−シアノエチル)−2,2
−ビスフルオロメチル−6−トリフルオロメチル−2H
−1−ベンゾピラン−4−カルボアミド92mg、ロー
ソン試薬60mg及びベンゼン2mlの混合物を80℃
にて1時間加熱攪拌した。反応混合物をシリカゲルカラ
ムクロマトグラフィ(溶出溶媒:塩化メチレン)に付
し、融点105−106℃のN−(2−シアノエチル)
−2,2−ビスフルオロメチル−6−トリフルオロメチ
ル−2H−1−ベンゾピラン−4−カルボチオアミド5
0mgを得た。
(9) N- (2-cyanoethyl) -2,2
-Bisfluoromethyl-6-trifluoromethyl-2H
A mixture of 92 mg of -1-benzopyran-4-carbamide, 60 mg of Lawesson's reagent and 2 ml of benzene was added at 80 ° C.
The mixture was heated and stirred for 1 hour. The reaction mixture was subjected to silica gel column chromatography (eluting solvent: methylene chloride), N- (2-cyanoethyl) having a melting point of 105-106 ° C.
-2,2-bisfluoromethyl-6-trifluoromethyl-2H-1-benzopyran-4-carbothioamide 5
0 mg was obtained.

【0042】H−NMR(CDCl,δ):2.8
9(t,2H),4.03(q,2H),4.60
(d,4H),5.87(s,1H),7.02(d,
1H),7.51(dd,1H),7.82(d,1
H),8.10−8.70(brs,1H) MS:376(M
H 1 -NMR (CDCl 3 , δ): 2.8
9 (t, 2H), 4.03 (q, 2H), 4.60
(D, 4H), 5.87 (s, 1H), 7.02 (d,
1H), 7.51 (dd, 1H), 7.82 (d, 1
H), 8.10-8.70 (brs, 1H) MS: 376 (M + ).

【0043】実施例4 N−(2−シアノエチル)−6−ペンタフルオロエチル
−2,2−ビスフルオロメチル−2H−1−ベンゾピラ
ン−4−カルボチオアミド(化合物4)の合成
Example 4 N- (2-cyanoethyl) -6-pentafluoroethyl
-2,2-bisfluoromethyl-2H-1-benzopyra
Synthesis of N-4-carbothioamide (Compound 4)

【0044】(1)2,2−ビスフルオロメチル−6−
ヨウド−2H−1−ベンゾピランー4−カルボン酸エチ
ルエステル、ペンタフルオロプロピオン酸カリウム、ヨ
ウ化第一銅、トルエン及びN,N−ジメチルホルミアミ
ドを用いて実施例3(6)と同様の方法により、6−ペ
ンタフルオロエチル−2,2−ビスフルオロメチル−2
H−1−ベンゾピラン−4−カルボン酸エチルエステル
を油状物として得た。
(1) 2,2-bisfluoromethyl-6-
Iodo-2H-1-benzopyran-4-carboxylic acid ethyl ester, potassium pentafluoropropionate, cuprous iodide, toluene and N, N-dimethylformamide were used in the same manner as in Example 3 (6). , 6-pentafluoroethyl-2,2-bisfluoromethyl-2
H-1-benzopyran-4-carboxylic acid ethyl ester was obtained as an oil.

【0045】H−NMR(CDCl,δ):1.4
0(3H,t),4.38(2H,q),4.60(4
H,d),6.69(1H,s),7.00(1H,
d),7.45(1H,dd),8.30(1H,d) MS:386(M
H 1 -NMR (CDCl 3 , δ): 1.4
0 (3H, t), 4.38 (2H, q), 4.60 (4
H, d), 6.69 (1H, s), 7.00 (1H,
d), 7.45 (1H, dd), 8.30 (1H, d) MS: 386 (M + ).

【0046】(2)6−ペンタフルオロエチル−2,2
−ビスフルオロメチル−2H−1−ベンゾピラン−4−
カルボン酸エチルエステルを用いて、実施例3(7)と
同様の方法により、融点173−174℃の6−ペンタ
フルオロエチル−2,2−ビスフルオロメチル−2H−
1−ベンゾピラン−4−カルボン酸を得た。
(2) 6-Pentafluoroethyl-2,2
-Bisfluoromethyl-2H-1-benzopyran-4-
Carboxylic acid ethyl ester was used in the same manner as in Example 3 (7) to give 6-pentafluoroethyl-2,2-bisfluoromethyl-2H- having a melting point of 173-174 ° C.
1-Benzopyran-4-carboxylic acid was obtained.

【0047】H−NMR(CDCl,δ):4.6
0(2H,d),6.69(1H,s),7.00(1
H,d),7.45(1H,dd),8.30(1H,
d) MS:358(M
H 1 -NMR (CDCl 3 , δ): 4.6
0 (2H, d), 6.69 (1H, s), 7.00 (1
H, d), 7.45 (1H, dd), 8.30 (1H,
d) MS: 358 (M + ).

【0048】(3)6−ペンタフルオロエチル−2,2
−ビスフルオロメチル−2H−1−ベンゾピラン−4−
カルボン酸を用いて実施例3(8)と同様の方法によ
り、融点144−145℃のN−(2−シアノエチル)
−6−ペンタフルオロエチル−2,2−ビスフルオロメ
チル−2H−1−ベンゾピラン−4−カルボアミドを得
た。
(3) 6-Pentafluoroethyl-2,2
-Bisfluoromethyl-2H-1-benzopyran-4-
N- (2-cyanoethyl) having a melting point of 144-145 ° C. was carried out in the same manner as in Example 3 (8) using a carboxylic acid.
-6-Pentafluoroethyl-2,2-bisfluoromethyl-2H-1-benzopyran-4-carboxamide was obtained.

【0049】H−NMR(CDCl,δ):2.7
2(2H,t),3.65(2H,q),4.60(4
H,d),6.09(1H,s),6.5−7.3(1
H,m),7.02(1H,d),7.52(1H,d
d),7.83(1H,d) MS:410(M
H 1 -NMR (CDCl 3 , δ): 2.7
2 (2H, t), 3.65 (2H, q), 4.60 (4
H, d), 6.09 (1H, s), 6.5-7.3 (1
H, m), 7.02 (1H, d), 7.52 (1H, d
d), 7.83 (1H, d) MS: 410 (M + ).

【0050】(4)N−(2−シアノエチル)−6−ペ
ンタフルオロエチル−2,2−ビスフルオロメチル−2
H−1−ベンゾピラン−4−カルボアミドを用いて実施
例3(9)と同様の方法により、融点108−109℃
のN−(2−シアノエチル)−6−ペンタフルオロエチ
ル−2,2−ビスフルオロメチル−2H−1−ベンゾピ
ラン−4−カルボチオアミドを得た。
(4) N- (2-cyanoethyl) -6-pentafluoroethyl-2,2-bisfluoromethyl-2
Using H-1-benzopyran-4-carboxamide and in the same manner as in Example 3 (9), the melting point was 108-109 ° C.
N- (2-cyanoethyl) -6-pentafluoroethyl-2,2-bisfluoromethyl-2H-1-benzopyran-4-carbothioamide was obtained.

【0051】H−NMR(CDCl,δ):2.8
9(2H,t),4.04(2H,q),4.57(4
H,d),5.84(1H,s),7.00(1H、
d),7.46(1H,dd),7.64(1H,
d),7.90−8.40(brs,1H) MS:426(M
H 1 -NMR (CDCl 3 , δ): 2.8
9 (2H, t), 4.04 (2H, q), 4.57 (4
H, d), 5.84 (1H, s), 7.00 (1H,
d), 7.46 (1H, dd), 7.64 (1H,
d), 7.90-8.40 (brs, 1H) MS: 426 (M + ).

【0052】実施例5 N−(2−シアノエチル)−2,2−ビスフルオロメチ
ル−6−ヘプタフルオロプロピル−2H−1−ベンゾピ
ラン−4−カルボチオアミド(化合物5)の合成
Example 5 N- (2-cyanoethyl) -2,2-bisfluoromethyi
Le-6-heptafluoropropyl-2H-1-benzopi
Synthesis of lan-4-carbothioamide (compound 5)

【0053】(1)2,2−ビスフルオロメチル−6−
ヨウド−2H−1−ベンゾピラン−4−カルボン酸エチ
ルエステル、ヘプタフルオロ酪酸カリウム、ヨウ化第一
銅、トルエン及びN,N−ジメチルホルミアミドを用い
て実施例3(6)と同様の方法により、2,2−ビスフ
ルオロメチル−6−ヘプタフルオロプロピル−2H−1
−ベンゾピラン−4−カルボン酸エチルエステルを油状
物として得た。
(1) 2,2-bisfluoromethyl-6-
Iodo-2H-1-benzopyran-4-carboxylic acid ethyl ester, potassium heptafluorobutyrate, cuprous iodide, toluene and N, N-dimethylformamide were used in the same manner as in Example 3 (6). 2,2-bisfluoromethyl-6-heptafluoropropyl-2H-1
-Benzopyran-4-carboxylic acid ethyl ester was obtained as an oil.

【0054】H−NMR(CDCl,δ):1.3
6(3H,t),4.32(2H,q),4.57(4
H,d),6.69(1H,s),7.02(1H,
d),7.46(1H,dd),8.29(1H,d) MS:436(M
H 1 -NMR (CDCl 3 , δ): 1.3
6 (3H, t), 4.32 (2H, q), 4.57 (4
H, d), 6.69 (1H, s), 7.02 (1H,
d), 7.46 (1H, dd), 8.29 (1H, d) MS: 436 (M + ).

【0055】(2)2,2−ビスフルオロメチル−6−
ヘプタフルオロプロピル−2H−1−ベンゾピラン−4
−カルボン酸エチルエステルを用いて、実施例3(7)
と同様の方法により、融点162−163℃の2,2−
ビスフルオロメチル−6−ヘプタフルオロプロピル−2
H−1−ベンゾピラン−4−カルボン酸を得た。
(2) 2,2-bisfluoromethyl-6-
Heptafluoropropyl-2H-1-benzopyran-4
Example 3 (7) using carboxylic acid ethyl ester
2,2-, whose melting point is 162-163 ° C.
Bisfluoromethyl-6-heptafluoropropyl-2
H-1-benzopyran-4-carboxylic acid was obtained.

【0056】H−NMR(CDCl,δ):4.6
0(4H,d),6.69(1H,s),7.00(1
H,d),7.45(1H,dd),8.30(1H,
d) MS:408(M
H 1 -NMR (CDCl 3 , δ): 4.6
0 (4H, d), 6.69 (1H, s), 7.00 (1
H, d), 7.45 (1H, dd), 8.30 (1H,
d) MS: 408 (M + ).

【0057】(3)2,2−ビスフルオロメチル−6−
ヘプタフルオロプロピル−2H−1−ベンゾピラン−4
−カルボン酸を用いて実施例3(8)と同様の方法によ
り、融点135−136℃のN−(2−シアノエチル)
−2,2−ビスフルオロメチル−6−ヘプタフルオロプ
ロピル−2H−1−ベンゾピラン−4−カルボアミドを
得た。
(3) 2,2-bisfluoromethyl-6-
Heptafluoropropyl-2H-1-benzopyran-4
By a method similar to Example 3 (8) using carboxylic acid, N- (2-cyanoethyl) having a melting point of 135-136 ° C.
-2,2-bisfluoromethyl-6-heptafluoropropyl-2H-1-benzopyran-4-carboxamide was obtained.

【0058】H−NMR(CDCl,δ):2.7
0(2H,t),3.62(2H,q),4.58(4
H,d),6.05(1H,s),6.5−7.3(1
H,m),6.98(1H,d),7.43(1H,d
d),7.78(1H,d) MS:460(M
H 1 -NMR (CDCl 3 , δ): 2.7
0 (2H, t), 3.62 (2H, q), 4.58 (4
H, d), 6.05 (1H, s), 6.5-7.3 (1
H, m), 6.98 (1H, d), 7.43 (1H, d
d), 7.78 (1H, d) MS: 460 (M + ).

【0059】(4)N−(2−シアノエチル)−2,2
−ビスフルオロメチル−6−ヘプタフルオロプロピル−
2H−1−ベンゾピラン−4−カルボアミドを用いて実
施例3(9)と同様の方法により、融点94−95℃の
N−(2−シアノエチル)−2,2−ビスフルオロメチ
ル−6−ヘプタフルオロプロピル−2H−1−ベンゾピ
ラン−4−カルボチオアミドを得た。
(4) N- (2-cyanoethyl) -2,2
-Bisfluoromethyl-6-heptafluoropropyl-
N- (2-cyanoethyl) -2,2-bisfluoromethyl-6-heptafluoro having a melting point of 94-95 ° C was prepared in the same manner as in Example 3 (9) using 2H-1-benzopyran-4-carboxamide. Propyl-2H-1-benzopyran-4-carbothioamide was obtained.

【0060】H−NMR(CDCl,δ):2.8
5(2H,t),3.95(2H,q),4.51(4
H,d),5.78(1H,s),6.92(1H、
d),7.47(1H,dd),7.56(1H,
d),7.90−8.40(brs,1H) MS:476(M
H 1 -NMR (CDCl 3 , δ): 2.8
5 (2H, t), 3.95 (2H, q), 4.51 (4
H, d), 5.78 (1H, s), 6.92 (1H,
d), 7.47 (1H, dd), 7.56 (1H,
d), 7.90-8.40 (brs, 1H) MS: 476 (M + ).

【0061】試験例1 摘出ラット大動脈を用いた試験 雄性Sprague Dawleyラット(450−6
00g)から胸部大動脈を取出し、2mm幅の輪状標本
とした。この標本をKrebs−Henseleit溶
液を含む10mlのオルガンバス中に2gの張力下で懸
垂させ、95%酸素、5%二酸化炭素ガスを通気させ
た。標本の収縮反応をFDピックアップにて等尺性に記
録した。1−1.5時間の平衡化の後、組織を収縮させ
るため30mM塩化カリウムを添加し、塩化カリウムに
よる持続的な収縮を弛緩させる試験化合物の活性として
50%抑制濃度(IC50)を求めた。比較化合物とし
てはWO92/02514号公報に記載のN−(2−シ
アノエチル)−2,2−ジメチル−6−ニトロ−2H−
1−ベンゾピラン−4−カルボアミド(化合物A)及び
WO92/14439号公報記載の6−トリフルオロメ
チル−N−メチル−2,2−ジメチル−2H−1−ベン
ゾピラン−4−カルボチオアミド(化合物B)を用い
た。結果を以下の表に示す。
Test Example 1 Test Using Isolated Rat Aorta Male Sprague Dawley rat (450-6
The thoracic aorta was taken out from (00 g) and used as a ring-shaped specimen having a width of 2 mm. This sample was suspended under a tension of 2 g in a 10 ml organ bath containing a Krebs-Henseleit solution, and 95% oxygen and 5% carbon dioxide gas were aerated. The contraction response of the sample was recorded isometrically with an FD pickup. After equilibration for 1-1.5 hours, 30 mM potassium chloride was added to shrink the tissue, and the 50% inhibitory concentration (IC 50 ) was determined as the activity of the test compound that relaxes the continuous contraction by potassium chloride. . As a comparative compound, N- (2-cyanoethyl) -2,2-dimethyl-6-nitro-2H- described in WO92 / 02514.
1-benzopyran-4-carboxamide (Compound A) and 6-trifluoromethyl-N-methyl-2,2-dimethyl-2H-1-benzopyran-4-carbothioamide (Compound B) described in WO92 / 14439. Using. The results are shown in the table below.

【表3】 [Table 3]

【0062】試験例2 摘出ラット大動脈を用いた試験法 雄性Sprague dawleyラット(450−6
00g)から胸部大動脈を取出し、2mm幅の輪状標本
とした。この標本をKrebs−Henseleit溶
液を含む2mlのオルガンバス中に2gの張力下で懸垂
させ、95%酸素、5%二酸化炭素ガスを通気させた。
標本の収縮反応をFDピックアップにて等尺性に記録し
た。1−1.5時間の平衡化の後、組織を収縮させるた
め30mM塩化カリウムを添加し、塩化カリウムによる
持続的な収縮を弛緩させる化合物の活性を化合物の最大
弛緩作用に対しての50%抑制濃度(EC50)を求め
ることにより評価した。結果を以下の表に示す。
Test Example 2 Test Method Using Isolated Rat Aorta Male Sprague Dawley rat (450-6
The thoracic aorta was taken out from (00 g) and used as a ring-shaped specimen having a width of 2 mm. This sample was suspended under a tension of 2 g in a 2 ml organ bath containing a Krebs-Henseleit solution, and 95% oxygen and 5% carbon dioxide gas were aerated.
The contraction response of the sample was recorded isometrically with an FD pickup. After equilibration for 1-1.5 hours, 30 mM potassium chloride is added to contract the tissue, and the activity of the compound that relaxes the sustained contraction by potassium chloride is suppressed by 50% with respect to the maximum relaxing action of the compound. It was evaluated by determining the concentration (EC 50 ). The results are shown in the table below.

【表4】 [Table 4]

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI A61P 11/06 A61P 11/06 13/02 13/02 43/00 111 43/00 111 (56)参考文献 国際公開92/002514(WO,A1) (58)調査した分野(Int.Cl.7,DB名) C07D 311/58 A61K 31/352 A61P 9/08 A61P 9/10 A61P 9/12 A61P 11/06 A61P 13/02 A61P 43/00 CA(STN) CAOLD(STN) REGISTRY(STN)─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI A61P 11/06 A61P 11/06 13/02 13/02 43/00 111 43/00 111 (56) References International publication 92/002514 (WO, A1) (58) Fields surveyed (Int.Cl. 7 , DB name) C07D 311/58 A61K 31/352 A61P 9/08 A61P 9/10 A61P 9/12 A61P 11/06 A61P 13/02 A61P 43/00 CA (STN) CAOLD (STN) REGISTRY (STN)

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 N−(2−シアノエチル)−2,2−ビ
スフルオロメチル−6−トリフルオロメチル−2H−1
−ベンゾピラン−4−カルボチオアミド。
1. N- (2-Cyanoethyl) -2,2-bisfluoromethyl-6-trifluoromethyl-2H-1
-Benzopyran-4-carbothioamide.
【請求項2】 N−(2−シアノエチル)−6−ペンタ
フルオロエチル−2,2−ビスフルオロメチル−2H−
1−ベンゾピラン−4−カルボチオアミド。
2. N- (2-Cyanoethyl) -6-pentafluoroethyl-2,2-bisfluoromethyl-2H-
1-benzopyran-4-carbothioamide.
【請求項3】 N−(2−シアノエチル)−2,2−ビ
スフルオロメチル−6−ヘプタフルオロプロピル−2H
−1−ベンゾピラン−4−カルボチオアミド。
3. N- (2-Cyanoethyl) -2,2-bisfluoromethyl-6-heptafluoropropyl-2H
-1-Benzopyran-4-carbothioamide.
JP08487694A 1993-04-23 1994-04-22 Benzopyran derivative Expired - Fee Related JP3535565B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP08487694A JP3535565B2 (en) 1993-04-23 1994-04-22 Benzopyran derivative

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP5-132308 1993-04-23
JP13230893 1993-04-23
JP5-141111 1993-05-07
JP14111193 1993-05-07
JP08487694A JP3535565B2 (en) 1993-04-23 1994-04-22 Benzopyran derivative

Publications (2)

Publication Number Publication Date
JPH0717965A JPH0717965A (en) 1995-01-20
JP3535565B2 true JP3535565B2 (en) 2004-06-07

Family

ID=27304680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP08487694A Expired - Fee Related JP3535565B2 (en) 1993-04-23 1994-04-22 Benzopyran derivative

Country Status (1)

Country Link
JP (1) JP3535565B2 (en)

Also Published As

Publication number Publication date
JPH0717965A (en) 1995-01-20

Similar Documents

Publication Publication Date Title
EP0346208B1 (en) 4-Amino quinolines and naphthyridines, process for their preparation and their use as medicaments
US5104890A (en) Benzopyran derivatives and processes for preparation thereof
KR100217167B1 (en) Novel benzopyran derivatives
KR910009399B1 (en) Benzopyran compound and its pharmaceutical use
EA010634B1 (en) Novel heterocyclic compounds useful for thr treatment of inflammatory and allergic disorders:process for their preparation and pharmaceutical compositions containing them
US4366163A (en) Anti-hypertensive chromanol derivatives
JPH0566953B2 (en)
JPH0327375A (en) Piranyl cyanoguanidine derivative
JP3210665B2 (en) New benzopyran derivatives
JP2707936B2 (en) β-oxo-β-benzenepropanethioamide derivative
JPS6210087A (en) 4,7-dihydrothieno(2,3-b)pyridine derivative, production thereof and remedy for circulatory disease
US20050245750A1 (en) Process for preparing 1,3-benzodioxole-2-spirocycloalkane derivative
JP3535565B2 (en) Benzopyran derivative
JPH07188145A (en) Aromatic amide
JPH05186458A (en) New benzopyran derivative
US5130310A (en) Substituted benzo[b]pyrans, processes for their preparation, their use and pharmaceutical preparations based on these compounds
EP0702952B1 (en) Benzopyran derivatives
JP3066594B2 (en) Aniline derivative and method for producing the same
PL182031B1 (en) Qunolone derivative intended for treating urinary incontinence
JPH08113574A (en) Pyridazinoindole derivative
JPS62273972A (en) Novel compound, its production and pharmaceutical composition containing the same
JPH0229076B2 (en) SHINKINABENZO PIRANJUDOTAI
JPS5852995B2 (en) Method for producing furfural derivatives
JP2003526633A (en) 2-Arylquinoline derivatives, their production and therapeutic applications
FR2632861A1 (en) 4-Amino-3-carboxyquinoline and -naphthyridine derivatives, process for preparing them and their application as medicaments

Legal Events

Date Code Title Description
TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20040217

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20040312

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees