JPS58183617A - Hypotensor - Google Patents

Hypotensor

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Publication number
JPS58183617A
JPS58183617A JP6671982A JP6671982A JPS58183617A JP S58183617 A JPS58183617 A JP S58183617A JP 6671982 A JP6671982 A JP 6671982A JP 6671982 A JP6671982 A JP 6671982A JP S58183617 A JPS58183617 A JP S58183617A
Authority
JP
Japan
Prior art keywords
nantenine
active ingredient
effect
case
injection
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
JP6671982A
Other languages
Japanese (ja)
Inventor
Tsunematsu Takemoto
竹本 常松
Noboru Shoji
庄子 昇
Yasushi Oizumi
康 大泉
Kenichiro Nakao
健一郎 中尾
Akihiro Tobe
戸部 昭広
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.)
Mitsubishi Kasei Corp
Original Assignee
Mitsubishi Kasei Corp
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 Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Priority to JP6671982A priority Critical patent/JPS58183617A/en
Publication of JPS58183617A publication Critical patent/JPS58183617A/en
Pending legal-status Critical Current

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  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

PURPOSE:A hypotensor having excellent sympatholytic action, showing improved prolonged effect in a small amount, comprising nantenine obtained by separation and purification from the fruit of a nandin as an active ingredient. CONSTITUTION:The titled hypotensor containing nantenine shown by the formula as an active ingredient. In medication, nantenine alone is administered orally (dosage form such as tablet, powder, solution, etc.) or parenterally (dosage form of injection, etc.) and it is combined with a carrier acceptable as a drug and administered. Preferably the amount of the active ingredient is 25-100wt% in case of tablet, powder, etc., 0.5-10wt% in case of solution for oral administration, and 1-10wt% in case of injection. Nantenine is obtained by crushing dried fruit of nandin, collecting a component soluble in an alcohol, extracting it with water and ethyl acetate, separating a water layer, collecting a component soluble in butanol, and subjecting it to silica gel column chromatography.

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明は血圧降下剤に関するものである。 詳しくは、優れた血圧隆下作用を持続的に有する血圧降
下剤に関するものである。 本発明者等は、種々の植物中に含まれる生理活性物質を
探索し、その薬効を検討中のところ、南天(ナンテン)
の実の中に存在するナンテニンが卓越した交感神経遮断
作用を有し、こねに基すき血圧降下剤とl〜て使用l〜
うることを確認し、本発明を達成した。 すなわち、本発明の要旨に、式(1) で表わされるナンテニンを有効成分とする血圧降下剤に
存する。 本発明の詳細な説明するに、本発明の有効成分であるナ
ンテニン(nanteninθ)は、公知の化合物であ
り、例えば、薬学雑誌71巻、31/頁(79タl);
同79巻、1092頁(/?5り)に記載されている。 ナンテニンは、南天(Nan−dina domest
ioa 丁hun’b )  の実から分離精製するこ
とにより調製される。す々わち、乾燥した南天の実を粉
砕し、メタノールのよりなアルコ−ルに可溶が成分′f
−取得し、水を加えて溶解させ、酢酸エチルに可溶な両
分を除去した後、その水層からブタノール可溶分子取得
し、これをクロロホルム−メタノール(9: / )(
g量比)混合物を溶出溶媒とするシリカゲルカラムクロ
マトグラフィーにかけ、ナンテニン画分を濃縮して粗結
晶を取得し、これを再結晶する。 ナンテニンを抽圧降下剤として用いる場合、単独または
薬剤として許容されうる担体と複合して投与される。そ
の組成は、投与経路や投与計画等によって決定される。 投与量は患者の年令、健康状態、体重、症状の程度、同
時処理があるならばその種類、処置m9/kl・日、経
口投与でθ、7〜3θ■/ki・日である。 ナンテニンを経口投与する場合は、錠剤、カプセル剤、
粉剤、顆粒剤、液剤、エリキシル剤等の形態で、また非
経口投与の場合、液体または懸濁液等の殺菌
TECHNICAL FIELD The present invention relates to antihypertensive agents. Specifically, the present invention relates to an antihypertensive agent that has an excellent sustained effect of lowering blood pressure. The present inventors are currently searching for physiologically active substances contained in various plants and examining their medicinal efficacy.
Nantenin, which is present in the fruit, has an outstanding sympatholytic effect and is used as a hypotensive agent based on kneaded seeds.
The present invention was achieved by confirming that it is possible. That is, the gist of the present invention resides in a hypotensive agent containing nantenine represented by formula (1) as an active ingredient. To explain in detail the present invention, nantenin θ, which is the active ingredient of the present invention, is a known compound, for example, Pharmaceutical Journal, Volume 71, Page 31 (79 Tal);
It is described in Volume 79, page 1092 (/?5ri). Nantenine is a substance found in the southern sky (Nan-dina domestic).
It is prepared by separating and purifying the fruit of Dinghun'b. First, the dried Nanten fruit is crushed and the ingredients are soluble in alcohol such as methanol.
- obtained, dissolved by adding water, and removing both components soluble in ethyl acetate, then obtaining butanol-soluble molecules from the aqueous layer, which were dissolved in chloroform-methanol (9:/) (
g amount ratio) The mixture is subjected to silica gel column chromatography using an elution solvent, and the nantenine fraction is concentrated to obtain crude crystals, which are recrystallized. When Nantenine is used as a blood pressure-lowering agent, it is administered alone or in combination with a pharmaceutically acceptable carrier. Its composition is determined by the route of administration, administration schedule, etc. The dosage is determined based on the patient's age, health condition, body weight, severity of symptoms, type of concurrent treatment, if any, treatment m9/kl·day, and θ for oral administration, 7 to 3θ■/ki·day. When administering Nantenine orally, tablets, capsules,
Sterilization in the form of powders, granules, solutions, elixirs, etc., and in the case of parenteral administration, liquids or suspensions, etc.

【また液状
の形態で用いられる。 上述の様々形態で用いられる場合、固体または液体の毒
例のない製剤的相体が組成に含捷わうる。 固体担体の例としては、通常のゼラチンタイプのカプセ
ルが用いられる。捷た、有効成分を補助薬とともに、あ
るいけそれなI2に錠剤化、顆粒化、粉末包装される。 こわらの際に併用される賦形剤としては、水:ゼラチン
:羽糖、グルコース等の抛類:コーン、小麦、米、アロ
ウルート澱粉等の澱粉類ニステアリン酸婢の脂肪酸ニス
テアリン酸カルシウム、ステアリン酸マグネシウム等の
脂肪酸基:クルク:41i物油:ステアリルアルコール
、ベンジルアルコール等のアルコール:ガム:ホリアル
キレングリコール等が挙げられる。 これらのカプセル、錠剤、顆粒、粉末は一般的にj〜/
θθ重伺チ、好ましくは、2 ! −/θθ重量俤の有
効成分を含む。 液状担体としては、水もしくは石油、大豆油、 3− ビーナツツ油、ゴマ油、ミネラル油等の動植物超厚のま
たは合成の油等が用いらねる。一般に、生理前L−u水
、デキストロース捷たけ類似の糖類浴液、エナレングリ
コール、プロピレンクリコール、ポリエチレングリコー
ル等のグリコール類が液状担体と1〜て好ましい。 非経口的に匍】内円注射、静脈内注射、皮下注射で投与
する場合、ナ/ナニンは溶液を等張にするために、食塩
またはグルコース等の他の溶質を添加した無菌溶液とし
て使用される。 注射用の適癌な溶剤としては、滅菌水、塩酸リドカイン
溶液(筋肉内注射用)、生理食塩水、ぶどう糖、静脈内
注射用液体、電解質浴液(静脈内注射用)等が挙げられ
る。これらの注射液の場合には、通常O,S−〜λθ重
量%、好ましくF′il〜/θ重電チの有効成分金倉む
ようにすることがよい。 経口投与の液剤の場合、0.5〜70重量%の有効成分
を含む懸濁液またはシロップがよい。 この場合の担体としては香料、シロップ、製剤 4− 学的ミセル体等の水様賦形剤を用いる。 本発明におけるナンテニンは、低用量で持続性のある卓
越した血圧降下作用を奏する。例えばラットへの経口投
与の場合、3my/kPでlj關Hy 、 /θ■/k
yで3θ關H2の血圧降下を示し、血圧降下剤として有
用である。 ナンテニンのこの優れた血圧降下作用は、本物質が血管
、輸精管等において優れたα−遮断作用、すなわち、交
感神経遮断作用を奏することに基ずくものと考えられる
。なお、ナンテニンは、以上の抑圧降下作用のほか、交
感神経遮断作用、さらに後述するように、抗けいれん作
用および鎮痛作用を併せ奏するので交感神経遮断剤、抗
けいれん剤、鎮痛剤としても使用される。 以下に実施例を挙げて、本発明を挙げて、本発明をさら
に詳細に説明するが、本発明はその要旨を超えない限り
、以下の実施例に限定されるものではない。 実施例 (1)  ナンテニンの調製: 乾燥した南天の実を粉砕した粉末4tkIIを701の
メタノールで室温で3回抽出し、抽出液を合わせてメタ
ノールを留去する。メタノール抽I11残渣729vを
、2tの水および/lの酢酸エチルを用い、室温で3回
抽出処理した後、水Ii1全1ヲし、これf2tのブタ
ノールを用いて3回抽出処理し、抽出液からブタノール
を留去する。ブタノール抽出残渣1szVをjθθrn
iのメタノールに溶解し、適量のセライトを加えて良く
混和した後、メタノールを留去して乾固する。約、2k
gのシリカゲルをクロロホルムでバ青めたシリカゲルカ
ラムの一トに上記の乾固物をのせ、クロロホルム−メタ
ノール混合溶媒(?:/)で溶出する。溶出した両分を
濃縮し、ナンテニンの粗結晶lf、39を得た。これを
酢酸エチルから再結晶することにより、無色針状晶のナ
ンテニンコtを得た。本物質の物理化学的性状は次の通
りであった。 融点:/ダθ−/l/l/C(未補正)、〔α〕D ’
+lθ10 (OHOI3)、分子式: 0*oHn”
4N、工R(KBr):帰属すべき吸収なし、Me m
/e :、ゴ39 (M” 、 97.ダ)、33と(
lθθ、θ)、’HNMR(Pyridine −d、
、 ) :δ、2.%、?(JH,8゜NC且s)、 
3.72C3H,B、 00!!、)、 3.74(J
H。 s、oc且s)、 6.θθ(,2H,S、00且、O
)、 4.44(/H、S 、 aromatic旦)
 、 t 、f7(/ H、S 、 aromatic
旦)、ざ、2θ(tH、S 、 arotnatic旦
)以上の物理化学的データより本物質の化学構造式は前
示(I)式で表わされるものと結論される。 (2)摘出ウサギ胸部大動脈に対する交感神経遮断作用
(α−遮断作用): (イ)実験方法 雄性ウサギ(2,5〜31g)をはく殺し、放血後胸部
大動脈を摘出し、ら線状に切りクレブスーリンゲ# (
Krebs −Rlnger )溶液を入れた容1it
2θw+lのマグヌス(Magnus )管中に懸垂し
た。その栄養液はJ7[に保ち、?j優0.−タ%OO
Rを通気した。この動脈切片に/Vの静止張力を付加し
、薬物投与81J / 時間インキュページ田ン(1n
ou−bation ) シた。その等偏性収縮の変化
をトランスジューサーを介して記録針に記録した。 (→ 結果および考察 ナンテニン(/θ−”f7ml)はノルアドレナリン(
/θ 〜3×/θ M)の用量−作用曲線f顕著に高用
量側に平行移動させたが、ヒスタミン(/θ 〜/θ 
M)および塩化カリウム(10〜6θmM )の用量−
作用曲線には何ら影響を4えなかった。従ってナンテニ
ンは大動脈に於てα−遮断作用すなわち交感神経遮断作
用を示す。 (3)摘出モルモット輸精管に対する交感神経遮断作用
(α−遮断作用): (イ)実験方法 雄性モルモツ)(2ffθ〜3θθf)をほく殺し、放
血後、輸精管を摘出11、クレブス−リンゲル溶液を入
わた容t20尻iのマグヌス管中に懸垂1/ tcoそ
の栄養液は3θCに保ち、9j係02−j係Co、  
を通気した。輸精管には/f(r)静止張力を付加し2
、薬物投与前7時間インキュベーションした。その等偏
性収縮の変化全トランスジューサーを介1.て、記録計
に記録した。 (ロ)結果および考察 ナンテニン(3×/θ S’/Ill/りはアセテルヨ
リン(3×/θ−7〜3×/θ−5)l)および塩化カ
リウム(70〜6θmM )の用量−作用曲線にはほと
んど影響を与えなかったが、ノルアドレナリン(10−
6〜/θ−4M)の用量−作用曲線を顕著に高用量側に
平行移動させた。以上のことから、ナンテニンは輸精管
に於てα−遮断作用すなわち交感神経遮断作用を示す。 (4)  ラットの面圧降下作用 (イ)実験方法 雄性の自然発症高面圧ラット(3θθ〜3りθV)をエ
ーテルで軽く麻酔し1尾動脈にカニユーレ(細管)を挿
入した後、無麻酔下尾動脈圧を圧トランスジューサーを
介してポリグラフに記録した。ナンテニンけθ、夕係ト
ウイーン(tweθn)に溶解し、経口投与によって投
与を行なった。 (ロ)結果および考察 第1衣に示すように、ナンテニンd経口投与の場合、自
然発症高抑圧ラットに対し、θ、7〜/θnv / k
Pの投与量に於て、用欺依存性に+fn圧を下降させた
。10■/kvのナンデニンを経口投与すると、投与7
0分後に血圧が次第に下降し、投与20分後にはその作
用が最大に達し、平均抽圧の約/!チ下降した。その作
用持続時間は少くとも約5時間であった。 第  /  表 自然発症高面圧ラットに対するナンテニンの血圧降下作
用 参考例 (1)雄性マウスに対する抗けいれX7作用(イ)実験
方法 (al  最大電気ショックけいれんに対する作用 一群1匹のaay−系雄性マウス(,2θ−+2すr)
を用い、ナンテニン、θ、タチトウイーン懸濁液を経口
投与し、7時間後に、′Hイ1気ショック誘発装置(U
go Ba5ile社製、イタリー)により30 mA
 、0.6meec、1θθHz 、θ、z see 
のショックを耳介電極を介1−で負荷し、ただちに発現
する強直性けいれん(強直性屈曲。 tonic fl、exor 、強直性伸展、tonj
−cθXt8n80r )  に対する抑制作用を検討
した。結果は強直性伸展に対するj0チ抑制t (wD
so = my/ky P、0. )で示した。 (1))  ベンテトラゾールけいれんに対する作用 一群1匹のddy系雄性マウス(,2θ−252)を用
い、(alと同様にしてナンテ二ンを経口投与して1時
間後にベンテトラゾール/θθ〜/ky′f腹腔内投与
し、発現する間代性けいれんおよび強直性けいわんに対
する抑制作用を検討した。結果は強直性伸展に対する5
θチ抑制量 (DIDIlo−try/ky P、Oo)で示した。 (ロ)結果および考察 最大電気ショックけいれん法およびベンテトラゾール法
に於てナンテニンは抗けいれん作用を示し、その抑制珪
強直性伸展の抑制を主とした。ナンテニンの強直性伸展
に対するjθチ抑制量(]iiD、。)は前者の方法で
イ/ rtb;17kg P、O,、後者の方法で3ク
ダ/ky P、O,であった。 (2)  雄性マウスに対する鎮痛作用〔酢酸ライジン
グ(writhing )法〕 aay系雄性マウス一群♂匹(2θ−月1)を用い、ナ
ンテニンを経口投与/時間後にθ、2%酢酸/)、 /
 m、l / / Of を腹腔内投与1−IO分後よ
り、10分間のライジング (writhing )数を測定した。結果は各用量に
おける平均ライジング数十標準誤差で表わし、joq6
抑制御A: (BlDyo ヤ/ ’i P、0− )
 k算出した。 酢酸ライジング抑制作用を検討した結果、ナンテニンは
顕著な抑制作用を示し、そのりOチ抑制量(”D+o 
)は/ t 、ff m9/ ky P、O,であつた
。 (3)雄性マウスに対する急性毒性 た。生死の判定ij: 7 u時間後に行なった。マウ
スニ於ケるナンテニンの経口投与によるTJD!to 
Id、’ 2 ! 、2m9 / kyであった。 出 願 人  三菱化成T業株式会社 代 理 人  弁理士 長谷用   −ほか7名 15− とあるつきに[および抗七ロト二)作用」を手続補正書
(自発) 1 事件の表小 昭和52年 特 許 願第 乙67/
7号・2 発 明 の名称 血圧降下剤 3 補正をする者 出願人 (59g)三菱化成工栗株式会社4代理人〒1
00 東京都千代U区丸の内二丁目5番2月 (14か 1 名) 5 油止の対象 明細書の発明の詳細な説明の4庵6補
正の内容 (1)  明細コトt )@ / ¥行・す[抗けbれ
んh1]」とある前に「抗セr+1・二ン剤」を挿入す
る。 挿入する。 (3) 明卸1書り貞/θ行の「(/θ−8〜3×/θ
−6M)Jとあるつき゛に「お」二びセrIl−ニン(
/θ−7〜/θ5M)」を挿入する。 (4)  明細書9貞76行の「交感神経遮断作用」と
あるつぎに「および抗セロトニン作用Jを挿入する。 以   −ト
[Also used in liquid form.] When used in the various forms described above, solid or liquid non-toxic pharmaceutical phases may be included in the composition. As an example of a solid carrier, conventional gelatin-type capsules are used. After cutting, the active ingredient is tabletted, granulated, and powder-packed into a certain size I2, along with auxiliary medicines. Excipients used in combination with stiffening include: water: gelatin: starches such as sugar, glucose, corn, wheat, rice, starch such as arrowroot starch, fatty acids containing nistearic acid, calcium nistearate, and stearin. Examples include fatty acid groups such as magnesium acid; curcum; 41i oils; alcohols such as stearyl alcohol and benzyl alcohol; gums; formalkylene glycol; and the like. These capsules, tablets, granules, and powders are generally
θθ overlap, preferably 2! -/θθ Contains active ingredients by weight. As the liquid carrier, water or petroleum, animal, plant, super thick or synthetic oils such as soybean oil, bean oil, sesame oil, mineral oil, etc. can be used. In general, premenstrual L-u water, a sugar bath solution similar to dextrose extract, and glycols such as enalene glycol, propylene glycol, and polyethylene glycol are preferred as liquid carriers. When administered parenterally by intravenous, intravenous, or subcutaneous injection, na/nanin is used as a sterile solution with the addition of other solutes, such as saline or glucose, to make the solution isotonic. Ru. Suitable solvents for injection include sterile water, lidocaine hydrochloride solution (for intramuscular injection), physiological saline, dextrose, fluid for intravenous injection, electrolyte bath solution (for intravenous injection), and the like. In the case of these injection solutions, the active ingredient is usually O, S- to λθ weight %, preferably F'il to /θ heavy electric acid. In the case of solutions for oral administration, suspensions or syrups containing 0.5 to 70% by weight of the active ingredient are preferred. In this case, aqueous excipients such as fragrances, syrups, and pharmaceutical micelles are used as carriers. Nantenine in the present invention exhibits an excellent and sustained hypotensive effect at low doses. For example, in the case of oral administration to rats, lj關Hy, /θ■/k at 3 my/kP
It shows a decrease in 3θ-H2 blood pressure in y and is useful as a hypotensive agent. This excellent antihypertensive action of nantenine is thought to be based on the fact that this substance exhibits an excellent α-blocking action, that is, a sympathetic nerve blocking action, in blood vessels, vas deferens, and the like. In addition to the depressant-depressing effect described above, nantenine also has a sympatholytic effect and, as described later, an anticonvulsant and analgesic effect, so it is also used as a sympatholytic agent, anticonvulsant, and analgesic. . EXAMPLES The present invention will be described in more detail by way of examples below, but the present invention is not limited to the following examples unless it exceeds the gist thereof. Example (1) Preparation of Nantenine: Powder 4tkII obtained by crushing dried Nanten fruit is extracted three times with 701 methanol at room temperature, the extracts are combined, and the methanol is distilled off. After extracting 729v of the methanol extraction I11 residue three times at room temperature using 2t of water and /l of ethyl acetate, the total amount of water Ii1 was extracted three times using f2t of butanol, and the extract was extracted with 2t of butanol. Butanol is distilled off. Butanol extraction residue 1szV jθθrn
Dissolve i in methanol, add an appropriate amount of celite, mix well, and then evaporate the methanol to dryness. Approx. 2k
The above dried product was placed on one side of a silica gel column prepared by discoloring the silica gel (g) with chloroform, and eluted with a chloroform-methanol mixed solvent (?:/). Both eluted fractions were concentrated to obtain crude crystals of nantenine lf, 39. By recrystallizing this from ethyl acetate, colorless needle-like crystals of Nanteninko t were obtained. The physicochemical properties of this substance were as follows. Melting point: /da θ-/l/l/C (uncorrected), [α]D'
+lθ10 (OHOI3), molecular formula: 0*oHn”
4N, Engineering R (KBr): No absorption to be attributed, Me m
/e:, go39 (M”, 97.da), 33 and (
lθθ, θ), 'HNMR (Pyridine-d,
, ) :δ, 2. %? (JH, 8°NC and s),
3.72C3H,B, 00! ! ), 3.74(J
H. s, oc and s), 6. θθ(,2H,S,00 and,O
), 4.44 (/H, S, aromatic)
, t, f7(/H, S, aromatic
From the above physicochemical data, it is concluded that the chemical structural formula of this substance is represented by the above formula (I). (2) Sympathetic nerve blocking effect (α-blocking effect) on the isolated rabbit thoracic aorta: (a) Experimental method Male rabbits (2.5-31 g) were sacrificed, and after exsanguination, the thoracic aorta was removed and cut into a spiral shape. Cut Krebsurlinge # (
1 liter of Krebs-Rlnger) solution
It was suspended in a 2θw+l Magnus tube. Keep the nutrient solution at J7 [? j Yu 0. -ta%OO
R was vented. A resting tension of /V was applied to this artery section, and the drug was administered at an incubation rate of 81 J/hour (1 n
ou-bation) Shita. Changes in the isotropic contraction were recorded on a recording needle via a transducer. (→ Results and Discussion Nantenine (/θ-”f7ml) is noradrenaline (
/θ ~3
M) and doses of potassium chloride (10-6 θmM) -
There was no effect on the action curve. Therefore, nantenine exhibits an α-blocking effect, that is, a sympatholytic blocking effect, in the aorta. (3) Sympathetic nerve blocking effect (α-blocking effect) on isolated guinea pig vas deferens: (a) Experimental method: Male guinea pigs (2ffθ~3θθf) are slaughtered, and after exsanguination, the vas deferens is removed11, and Krebs-Ringer's solution is added. Suspend 1/tco in the Magnus tube of cotton volume t20 and keep the nutrient solution at 3θC, 9j section 02-j section Co,
was ventilated. Adding /f(r) resting tension to the vas deferens 2
, incubated for 7 hours before drug administration. Changes in its isocentric contractions through all transducers 1. and recorded it on a recorder. (B) Results and discussion Dose-effect curves of nantenine (3×/θ S'/Ill/is acetelyoline (3×/θ-7 to 3×/θ-5)) and potassium chloride (70 to 6θmM) It had little effect on norepinephrine (10-
6~/θ-4M) significantly shifted the dose-effect curve toward higher doses. From the above, nantenine exhibits an α-blocking action, that is, a sympatholytic blocking action, in the vas deferens. (4) Surface pressure lowering effect in rats (a) Experimental method A male rat with spontaneously high surface pressure (3θθ to 3θV) was lightly anesthetized with ether, a cannula was inserted into the tail artery, and then anesthetized. Inferior caudal artery pressure was recorded on a polygraph via a pressure transducer. Nantenine θ was dissolved in tweθn and administered orally. (B) Results and Discussion As shown in the first column, oral administration of nantenin d resulted in θ,7~/θnv/k for spontaneously highly depressed rats.
At the dose of P, the +fn pressure decreased in a user-dependent manner. When nandenine was orally administered at 10 μ/kv, administration 7
After 0 minutes, the blood pressure gradually decreases, and 20 minutes after administration, the effect reaches its maximum, and the average vacuo pressure is about /! Chi descended. Its duration of action was at least about 5 hours. Table 1: Blood pressure lowering effect of Nantenine on rats with spontaneous high surface pressure Reference examples (1) Anticonvulsant X7 effect on male mice (a) Experimental method (al) Effect on maximum electric shock convulsion One aay-strain male mouse per group (,2θ−+2sr)
Nantenine, θ, and Tachitoween suspensions were orally administered using a
30 mA by go Ba5ile (Italy)
,0.6meec,1θθHz ,θ,z see
A shock is applied to the pinna electrode through the pinna 1-, and tonic convulsion (tonic fl, exor, tonic extension, tonj) occurs immediately.
-cθXt8n80r) was investigated. The results show that j0chi inhibition t (wD
so = my/ky P, 0. ). (1)) Effect on bentetrazole convulsions One hour after orally administering nanterine to one group of ddy male mice (2θ-252), bentetrazole/θθ~/ky 'f was administered intraperitoneally, and its inhibitory effect on clonic convulsions and tonic convulsions was investigated.
It was expressed as the amount of θ-chi inhibition (DIDI lo-try/ky P, Oo). (b) Results and Discussion In the maximum electric shock convulsion method and the bentetrazole method, nantenine exhibited anticonvulsant effects, mainly inhibiting silicotonic extension. The inhibitory amount of nantenine on tonic extension (]iiD,.) was 1/rtb; 17 kg P, O, using the former method, and 3 Kuda/ky P, O, using the latter method. (2) Analgesic effect on male mice [acetic acid writhing method] Using a group of male aay mice (2θ - 1 month), nantenine was orally administered/hour later, θ, 2% acetic acid/), /
Starting from 1-IO minutes after intraperitoneal administration of m, l//Of, the number of writhings for 10 minutes was measured. Results are expressed as mean rising tens of standard errors at each dose, joq6
Suppression control A: (BlDyo ya/'i P, 0-)
k was calculated. As a result of examining the inhibitory effect of acetic acid writhing, nantenine showed a remarkable inhibitory effect, and the amount of inhibition of Oti ("D+o
) were / t , ff m9/ ky P, O,. (3) Acute toxicity to male mice. Judgment of life and death ij: Performed after 7 u hours. TJD by oral administration of nantenine in mice! to
Id,' 2! , 2m9/ky. Applicant: Mitsubishi Kasei T-gyo Co., Ltd. Agent: Patent attorney: Yo Hase - and 7 other people 15 - Procedural amendment (voluntary) for ``Toaru Tsuki [and Anti-Seven Loto 2] Effects'' 1 Case Summary 1978 Patent Application No. Otsu 67/
No. 7/2 Name of the invention Hypertensive agent 3 Person making the amendment Applicant (59g) Mitsubishi Kasei Kokuri Co., Ltd. 4 Agent 〒1
00 February 2-5 Marunouchi, Chiyo U-ku, Tokyo (14 or 1 person) 5 Target of oil stop Contents of 4-6 amendments to the detailed explanation of the invention in the specification (1) Details t ) @ / ¥ line・Insert ``Anti-Serum +1/2 agent'' before it says ``S[Anti-Serum h1]''. insert. (3) “(/θ-8~3×/θ
-6M)
/θ-7~/θ5M)" is inserted. (4) In line 9, line 76 of the specification, after the words "sympathetic nerve blocking effect," insert "and antiserotonin effect J."

Claims (1)

【特許請求の範囲】[Claims] (1)式(D 上(2 で表わされるナンテニンを有効成分とする血圧降下剤(1) Formula (D Top (2 Antihypertensive agent containing Nantenine as an active ingredient
JP6671982A 1982-04-21 1982-04-21 Hypotensor Pending JPS58183617A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06256190A (en) * 1993-03-02 1994-09-13 Natl Sci Council Remedy for benign prostatomegaly
CN104478888A (en) * 2014-12-16 2015-04-01 陕西嘉禾植物化工有限责任公司 Method for extracting O-methyl nandinine from Nandina domestica

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06256190A (en) * 1993-03-02 1994-09-13 Natl Sci Council Remedy for benign prostatomegaly
CN104478888A (en) * 2014-12-16 2015-04-01 陕西嘉禾植物化工有限责任公司 Method for extracting O-methyl nandinine from Nandina domestica

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