JP2006513233A - アシルCoA:コレステロールアシルトランスフェラーゼの阻害活性を有する化合物またはその塩を有効成分とする殺虫剤 - Google Patents
アシルCoA:コレステロールアシルトランスフェラーゼの阻害活性を有する化合物またはその塩を有効成分とする殺虫剤 Download PDFInfo
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- JP2006513233A JP2006513233A JP2004564582A JP2004564582A JP2006513233A JP 2006513233 A JP2006513233 A JP 2006513233A JP 2004564582 A JP2004564582 A JP 2004564582A JP 2004564582 A JP2004564582 A JP 2004564582A JP 2006513233 A JP2006513233 A JP 2006513233A
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- acyl coa
- cholesterol acyltransferase
- insecticide
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Abstract
Description
本発明は、アシルCoA:コレステロールアシルトランスフェラーゼの阻害活性を有する化合物またはその塩を有効成分とする殺虫剤に関する。
従来、農業生産物および加工物の生産性の増大、衛生昆虫の防除と山林保護のために、有機合成殺虫剤が広く用いられてきた。しかしながら、数十年にわたった連続使用と乱用により、天敵を用いた生物学的防除系に悪影響を及ぼし、害虫の異常発現または抵抗性害虫の出現、人間を始めとする非標的微生物への毒性発現および環境汚染などの多くの副作用を引き起こすことになった。
本発明では、幼虫のステロール代謝において、貯蔵型ステロールまたは各種のホルモン生成に重要な役割をするものと知られているステロールアシル化酵素を新たな概念の目標指向的な探索系として使用して、天然資源からは新たな活性物質を探索し、阻害活性物質を分離精製して構造を糾明し、既に合成されているアシルCoAコレステロールアシルトランスフェラーゼ阻害活性を有する有機合成物を、本発明の検索系において活性を評価し、酵素阻害活性を確認した物質を、種々の幼虫に処理した結果、活性物質が幼虫に対して生物活性を示すことを確認して、本発明を完成するに至った。
本発明の前記およびほかの目的、特徴および利点は添付図面を参考する以降の詳細な説明からより明らかに理解可能であろう。
前記目的を達成するために、本発明は、アシルCoA:コレステロールアシルトランスフェラーゼの阻害活性を有する化合物またはその塩を有効成分とする殺虫剤を提供する。
以下、本発明を添付図面を参照する下記実施例に基づいてより詳しく説明する。しかしながら、下記実施例は、単に本発明を例示するためのものであり、本発明の範囲を限定するものではない。
<アシルCoA:コレステロールアシルトランスフェラーゼ阻害物質の製造>
(1)本発明で用いられる生産菌株のペニシリウムグリセオフルビン F1959は、韓国慶尚北道蔚山において採取した土壌から分離した菌であって、菌学的研究によりペニシリウムグリセオフルビンと判明され、本発明者等は、生命工学研究所韓国種菌協会にペニシリウムグリセオフルビン F1959として寄託し、寄託番号KCTC 0387BPを付与された。
(1)紫外線−可視光線分析
前記実施例1で得られたステロール代謝活性阻害物質の構造を決定するために、紫外線−可視光線吸光度分析を行った。具体的には、前記実施例1で得られた化合物を100%メタノールに溶かし、紫外線−可視光線分光器(Shimazu社、UV−265)を用いて吸収波長を分析した。
赤外線(IR)吸光度分析は、活性物質試料2mgをクロロホルムに溶かし、AgBrを塗った後乾燥して、比率記録型赤外線分光器(Bio−Rad Digilab Division、FTS−80)で分析した。
前記実施例1で得られた化合物の分子量を分析するために、VGZAB−7070質量分析器を用いて、高分解能質量分析を行った。
前記実施例1で得られた化合物の構造を調べるために、核磁気共鳴(NMR)分析を行った。前記化合物10mgを完全乾燥し、CDCl3に溶かして、5mmNMRチューブに入れ、Varian Unity−500機種でNMR分析を行った。1H−NMRは500.13MHzで核磁気共鳴スペクトルを測定した。結果は、下記図1〜4に示した。
アシルCoA:コレステロールアシルトランスフェラーゼ活性阻害(以下、「ACAT」という。)物質の活性測定は、Brecher法を若干修正して用いた[Brecher.P and C.Chen;Biochimica Biophysica Acat 617:458〜471,1980]。この方法は、アシルCoA:コレステロールアシルトランスフェラーゼ活性酵素原としては、肝から部分精製したミクロソームを用いており、基質としてはコレステロールと放射能で標識されたオレオイルCoAを反応させるものであり、反応生成物であるコレステロールエステルに含まれた放射能の量で反応程度を測定した。
阻害活性(%)=[1−(T−B/C−B)]×100
(前記式中、T:酵素反応液に試料を入れた試験区におけるcpm値、C:酵素反応液に試料を入れなかった対照区におけるcpm値、B:酵素原を入れず、試料を入れた対照区のcpm値。)
前記ACAT阻害率を測定した結果、
pyripyropene A(化学式1)は、酵素の活性を50%阻害する濃度、すなわちIC50が35ng/mlであり、分子量が583であるので、0.060nMとして計算された。
本発明で用いられる試験昆虫としてのコナガの幼虫は、2001年4月韓国大田市儒城区魚隠洞所在の韓国生命工学研究院昆虫資源質から分譲され、実験昆虫として用いた。本発明のACAT阻害活性を有する化合物は、正確に重量を測定し、アセトンに適正量を溶かした後、triton X−100 100ppm水溶液9倍と混合し順次希釈して、処理すべき活性検索物質溶液を調製した。コナガ幼虫の餌としては、均一な発育状態のキャベツ葉のディスク(径3.0cm)を打ち抜き、用意された活性検索物質溶液に30秒間十分に浸る程度に浸漬してから取り出し、フード内で60分間乾燥した。蒸留水で濡らしたろ紙ディスクのシャーレ(55×20mm)に、活性検索物質が処理された葉を載せ、コナガの2齢幼虫を虫体が損なわないように柔らかなブラシで幼虫を移動させ、10匹ずつ3回繰り返して接種した。活性検索物質が処理されたコナガ幼虫は、恒温室(25±1℃、相対湿度40〜45%、16L:8D)で飼育し、24時間目、48時間目の殺虫率を調査した。無処理区は、処理された抽出物を除いたアセトン10%溶液にtriton X−100 100ppm水溶液9倍を処理して、活性検索物質の処理方法と同様にして処理した。活性検索実験は、3回繰り返して行い、Finney(1982)のプロビット法によって半数致死濃度(LC50)を算出した。
本発明で用いられるACAT阻害剤のうち、phenylpyropene A、B、C(化学式2〜4)により、幼虫の体重減少活性を実験した。試験昆虫としてのチャイロゴミムシダマシ幼虫は、韓国生命工学研究院昆虫資源質から分譲され、実験で用いた。チャイロゴミムシダマシの2齢幼虫(10〜12mm)を、活性評価実施の24時間前に健康な幼虫を選んで試験毎に用いた。化学式2〜4の化合物をそれぞれアセトン10%溶液を用いて、1mg/1mlの濃度で溶解させた後、順次希釈して、餌として用いるふすま1g当たり溶液1mlを入れて混合した。前記化合物が混合されたふすまをガラスシャーレ(90×20mm)に入れ、デシケーターに入れて約2時間減圧下で有機溶媒を除去させた後、活動性の良好な幼虫の体重を10匹単位で測定した後、ろ紙ディスクのシャーレ(87×15mm)に、適正量の活性検索物質を処理したふすまと一緒に入れた。室内温度25±1℃、相対湿度40〜45%、16時間明/8時間暗の条件で飼育しながら前記化合物を処理し、72時間の経過後、3日おきに幼虫の体重と摂食量を調査した。実験は3回繰り返して行い、無処理区はアセトン10%溶液を用いた。その結果を図8に示した。
以上のように、本発明は、アシルCoA:コレステロールアシルトランスフェラーゼの阻害活性を有する化合物またはその塩を有効成分とする殺虫剤に関するものであり、前記アシルCoA:コレステロールアシルトランスフェラーゼの阻害活性を有する化合物は、害虫の生体内でのステロール代謝を抑制して、幼虫の殺虫活性に優れ、かつ、安定性の高い殺虫剤として用いることができる。また、ペニシリウムグリセオフルビン F1959を用いて、アシルCoA:コレステロールアシルトランスフェラーゼの阻害活性を有する化合物を容易に得ることができる。
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KR20030000825A KR100522446B1 (ko) | 2003-01-07 | 2003-01-07 | 아실 코에이:콜레스테롤 아실 트란스퍼라제의 저해활성을갖는 화합물 또는 그 염을 유효성분으로 하는 살충제 |
PCT/KR2003/002711 WO2004060065A1 (en) | 2003-01-07 | 2003-12-11 | Insecticidal compositions comprising compounds having inhibitory activity versus acyl coa: cholesterol acyltransferase or salts thereof as effective ingredients |
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UA111151C2 (uk) | 2010-03-01 | 2016-04-11 | Мейдзі Сейка Фарма Ко., Лтд. | Спосіб одержання похідних пірипіропену |
PE20130631A1 (es) * | 2010-05-28 | 2013-05-29 | Basf Se | Mezclas de plaguicidas |
JP2013166704A (ja) * | 2010-06-16 | 2013-08-29 | Meiji Seikaファルマ株式会社 | 新規殺虫剤 |
EP2615910B1 (en) | 2010-09-14 | 2014-07-02 | Basf Se | Composition containing a pyripyropene insecticide and a base |
US8968757B2 (en) | 2010-10-12 | 2015-03-03 | Ecolab Usa Inc. | Highly wettable, water dispersible, granules including two pesticides |
EP2825050B1 (en) | 2012-03-12 | 2016-02-03 | Basf Se | Liquid concentrate formulation containing a pyripyropene insecticide i |
JP6088551B2 (ja) | 2012-03-12 | 2017-03-01 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | ピリピロペン殺虫剤を含有する液体濃厚製剤ii |
EP2825043B1 (en) | 2012-03-12 | 2018-09-05 | Basf Se | Method for producing an aqueous suspension concentrate formulation of a pyripyropene insecticide |
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Cited By (13)
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WO2008066153A1 (fr) * | 2006-11-30 | 2008-06-05 | Meiji Seika Kaisha, Ltd. | Agent antiparasitaire |
US8202890B2 (en) | 2006-11-30 | 2012-06-19 | Meiji Seika Pharma Co., Ltd. | Pest control agent |
JP5269609B2 (ja) * | 2006-11-30 | 2013-08-21 | Meiji Seikaファルマ株式会社 | 害虫防除剤 |
JP5313869B2 (ja) * | 2007-03-08 | 2013-10-09 | Meiji Seikaファルマ株式会社 | 有害生物防除用組成物 |
WO2008108491A1 (ja) * | 2007-03-08 | 2008-09-12 | Meiji Seika Kaisha, Ltd. | 有害生物防除用組成物 |
US9675075B2 (en) | 2007-03-08 | 2017-06-13 | Basf Se | Pest control composition |
US8859462B2 (en) | 2007-03-08 | 2014-10-14 | Meiji Seika Pharma Co., Ltd. | Pest control composition |
JP5649824B2 (ja) * | 2007-12-21 | 2015-01-07 | Meiji Seikaファルマ株式会社 | 新規浸透移行性殺虫剤 |
US9434739B2 (en) | 2007-12-21 | 2016-09-06 | Meiji Seika Pharma Co., Ltd. | Systemic insecticide |
WO2009081851A1 (ja) * | 2007-12-21 | 2009-07-02 | Meiji Seika Kaisha, Ltd. | 新規浸透移行性殺虫剤 |
JPWO2011148886A1 (ja) * | 2010-05-24 | 2013-07-25 | Meiji Seikaファルマ株式会社 | 有害生物防除剤 |
WO2011148886A1 (ja) * | 2010-05-24 | 2011-12-01 | Meiji Seikaファルマ株式会社 | 有害生物防除剤 |
JP2017008077A (ja) * | 2010-09-14 | 2017-01-12 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | ピリピロペン殺虫剤及び補助剤を含有する組成物 |
Also Published As
Publication number | Publication date |
---|---|
RU2005125040A (ru) | 2006-01-20 |
JP4583934B2 (ja) | 2010-11-17 |
AU2003303489A1 (en) | 2004-07-29 |
BR0317269A (pt) | 2005-11-08 |
AU2003303489C1 (en) | 2009-09-03 |
CA2512728A1 (en) | 2004-07-22 |
RU2305403C2 (ru) | 2007-09-10 |
US20090182014A1 (en) | 2009-07-16 |
EP1589816A4 (en) | 2006-06-28 |
CN1744817A (zh) | 2006-03-08 |
KR100522446B1 (ko) | 2005-10-18 |
EP1589816A1 (en) | 2005-11-02 |
AU2003303489B2 (en) | 2007-08-23 |
WO2004060065A1 (en) | 2004-07-22 |
US20060135564A1 (en) | 2006-06-22 |
KR20040063416A (ko) | 2004-07-14 |
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