KR19990030614A - Novel compounds having squalene synthetase inhibitory activity, preparation methods thereof, and compositions comprising the same - Google Patents

Novel compounds having squalene synthetase inhibitory activity, preparation methods thereof, and compositions comprising the same Download PDF

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KR19990030614A
KR19990030614A KR1019970050895A KR19970050895A KR19990030614A KR 19990030614 A KR19990030614 A KR 19990030614A KR 1019970050895 A KR1019970050895 A KR 1019970050895A KR 19970050895 A KR19970050895 A KR 19970050895A KR 19990030614 A KR19990030614 A KR 19990030614A
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ene
bicyclo
oct
tricarboxylic acid
formula
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KR1019970050895A
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Korean (ko)
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안인애
유영준
장호진
노성구
이영진
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성재갑
주식회사 엘지화학
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Abstract

본 발명은 새로운 구조의 스쿠알렌 합성 효소 억제 활성을 갖는 화학식 1로 표시되는 신규 화합물, 그의 제조방법 및 그를 포함하는 조성물에 관한 것으로, 본 발명의 화합물은 체내 콜레스테롤 축적을 촉진하는 효소인 스쿠알렌 합성 효소의 활성을 효과적이고 강력하게 억제하고 합성이 용이하여 고지혈증, 관상동맥심장병, 동맥경화증, 심근경색증 등과 같은 심장순환계 질환의 예방 및 치료에 유용하게 이용될 수 있다.The present invention relates to a novel compound represented by the formula (1) having a squalene synthetase inhibitory activity of a novel structure, a preparation method thereof, and a composition comprising the same, wherein the compound of the present invention is an enzyme that promotes the accumulation of cholesterol in the body. It effectively and strongly inhibits the activity and is easy to synthesize, and thus can be useful for the prevention and treatment of cardiovascular diseases such as hyperlipidemia, coronary heart disease, arteriosclerosis, myocardial infarction and the like.

(상기식에서 A, B 및 R1및 R2는 명세서에 정의한 바와 같다.)(Wherein A, B and R 1 and R 2 are as defined in the specification).

Description

스쿠알렌 합성 효소 억제활성을 갖는 신규 화합물, 그의 제조방법 및 그를 포함하는 조성물Novel compounds having squalene synthetase inhibitory activity, preparation methods thereof, and compositions comprising the same

본 발명은 스쿠알렌 합성 효소 (squalene synthase 또는 farnesyl-diphosphate:farnesyl-diphosphate farnesyltransferase)를 억제하는 신규 화합물, 이의 제조방법 및 이를 포함하는 조성물에 관한 것으로, 보다 상세하게는 콜레스테롤 생합성을 저해하여 혈중 콜레스테롤 농도를 강하시킬 수 있는 효소인 스쿠알렌 합성 효소 억제활성을 갖는 새로운 화합물, 이의 제조방법 및 상기 화합물을 포함하는, 고지혈증, 관상동맥심장병, 동맥경화증, 심근경색증 등의 심장순환계 질환의 예방 및 치료용 조성물에 관한 것이다.The present invention relates to a novel compound that inhibits squalene synthase (squalene synthase or farnesyl-diphosphate: farnesyl-diphosphate farnesyltransferase), a method for preparing the same, and a composition comprising the same. A novel compound having a squalene synthetase inhibitory activity, an enzyme capable of lowering, a preparation method thereof, and a composition for preventing and treating cardiovascular diseases such as hyperlipidemia, coronary heart disease, arteriosclerosis, and myocardial infarction, including the compound will be.

심장순환계 질환은 현재 전세계적으로 사망율 1위를 차지하는 질병으로 구미 등 선진국에서는 이로 인한 사망이 전체 사망의 1/3 이상을 차지하고 있다. 이미 서구화한 일본의 경우도 같은 경향을 보이고 있고, 식생활 문화를 비롯하여 매우 빠른 속도로 서구화하고 있는 우리나라의 경우도 수년 내에 비슷한 경향을 보일 것으로 예상되고 있다. 이러한 현상은 혈장내 콜레스테롤 농도가 높으면 심장순환계 질병을 야기시킬 확률이 높다는 연구 보고들과 일맥상통하는 것으로서, 심장순환계 질환의 근본적 원인중 하나인 혈중 콜레스테롤에 대한 현대인의 관심은 날로 증대하고 있는 실정이다.Cardiac circulatory disease is currently the leading cause of mortality in the world, and more than one third of all deaths in developed countries such as Gumi. The same is true of Japan, which has already been westernized, and Korea, which is rapidly westernizing, including its food culture, is expected to show similar trends within the years. This phenomenon is in line with research reports that high plasma cholesterol levels are more likely to cause cardiovascular disease, and modern people's interest in blood cholesterol, one of the fundamental causes of cardiovascular disease, is increasing day by day. .

높은 혈중 콜레스테롤 농도가 심장순환계 질환의 근본적 원인이 된다는 연구 결과들이 많이 알려져 있고, 이에 따라 혈중 콜레스테롤 농도를 저하시켜서 심장순환계 질환을 예방하려는 노력들이 계속되어 왔다. 혈중 콜레스테롤 농도를 저하시키는 방법으로는 음식물로부터 섭취되는 콜레스테롤의 양을 줄이거나, 콜레스테롤의 대사를 증가시키거나 또는 콜레스테롤의 생합성 자체를 저해하는 것 등이 있다.Many studies have shown that high blood cholesterol levels are a fundamental cause of cardiovascular disease, and efforts to prevent cardiovascular disease by reducing blood cholesterol levels have been continued. Reducing the cholesterol level in the blood includes reducing the amount of cholesterol ingested from food, increasing the metabolism of cholesterol, or inhibiting the biosynthesis of cholesterol itself.

그러나 생체내 존재하는 콜레스테롤의 대부분은 생체내 합성으로 공급되기 때문에 위의 방법들 중에서 생합성 자체를 저해하는 것이 가장 효율적인 방법으로 알려져 있다. 한 예로 콜레스테롤 생합성의 여러반응 단계 중 첫 번째 단계는 3-히드록시-3-메틸글루타릴 조효소 A (3-hydroxy-3-methylgluataryl coenzyme A, 이하 "HMG CoA"라 약칭함)로부터 메발로닉산을 만드는 것인데, 이 반응에 관여하는 효소인 HMG CoA 리덕테이즈(reductase)를 저해하여 혈중 콜레스테롤 농도를 강하시키는 방법은 이미 임상적으로 큰 성공을 거두고 있다.However, since most of the cholesterol present in vivo is supplied by in vivo synthesis, it is known that the most efficient method is to inhibit biosynthesis among the above methods. For example, the first of several reaction stages of cholesterol biosynthesis is mevalonic acid from 3-hydroxy-3-methylglutaryl coenzyme A (abbreviated as "HMG CoA"). Inhibiting HMG CoA reductase, an enzyme involved in the reaction, to lower blood cholesterol levels has already been clinically successful.

그러나 HMG CoA 리덕테이즈는 콜레스테롤의 생합성 이외에도 우리 몸에 필요한 많은 물질을 합성하기 위해 꼭 필요한 효소로서, 이를 지나치게 억제하면 부작용이 유발될 우려가 있다. 즉 메발로닉산이 조효소 Q(coenzyme Q), 헴 A(heme A) 및 도리콜 등과 같은 아이소프레노이드의 공동 선구물질이기 때문에, 이 효소의 활성을 억제하면 아이소프레노이드에 관련된 다른 대사에도 영향을 미칠 가능성이 있다. 이러한 부작용의 가능성 때문에, 콜레스테롤의 생합성 단계 중에서 다른 물질의 합성에는 영향을 주지않고 오직 콜레스테롤의 합성에만 관련된 효소 반응 단계에 대한 연구가 많이 이루어졌다. 이러한 효소들에 대한 선택적인 저해는 오직 콜레스테롤의 생합성만을 방해할 것이고 다른 아이소프레노이드들의 합성에는 영향을 주지 않을 것이기 때문이다.However, HMG CoA reductase is an essential enzyme for synthesizing many substances necessary for our body in addition to cholesterol biosynthesis. In other words, because mevalonic acid is a co-precursor of isoprenoids such as coenzyme Q, heme A and doricol, inhibiting the activity of this enzyme also affects other metabolism related to isoprenoids. There is a possibility. Because of the possibility of these side effects, many studies have been conducted on the enzymatic reaction stages related to the synthesis of cholesterol without affecting the synthesis of other substances in the biosynthesis stage of cholesterol. Selective inhibition on these enzymes will only interfere with the biosynthesis of cholesterol and will not affect the synthesis of other isoprenoids.

다른 물질의 합성에는 영향을 미치지 않고 콜레스테롤의 합성에만 관여하는 반응들 중 하나는 두 개의 파네실디포스페이트를 합쳐서 스쿠알렌을 만드는 반응이고, 이 반응에 관여하는 효소는 스쿠알렌 합성효소이다 (Poulter, C. D.; Rilling, H. C. In "Biosynthesis of Isoprenoid Compounds", Porter, J. W. and Spurgeon, S. L. Eds,; Wiley, New York, 1981, Vol. 1, Chapter 1). 최근 여러 연구기관에서 이 효소의 저해제에 대해 많은 연구를 진행하고 있다 (Chan, C.; Andreotti, D.; Cox, B.; Dymock, B. W.; Huston, J. L.; Keeling, S. E.; McCarthy, A. D.; Procopiou, P. A.; Ross, B. C.; Sareen, M.; Scicinski, J. J.; Sharratt, P. J.; Snowden, M. A.; Watson, N. S.J. Med. Chem. 1996,39, 207. Koert U.,Angew.Chem. Int. Ed. Engl. 1995,34, 773. Wilson, K. E.; Burk, R. M.; Biftu, T.; Ball, R. G.; Hoogsteen, K.J. Org. Chem. 1992,57, 7151. Dickson, J. K. Jr.; Biller, S. A.; Magnin, D. R.; Petrillo, E. W. Jr.; Hillyer, J. W.; Hsieh, D. C.; Lan, S. J.; Rinehart, J. K.; Gregg, R. E.; Harrity, T. W.; Jolibois, K. G.; Kalinowski, S. S.; Kunselman, L. K.; Mookhtiar, K. A.; Ciosek, C. P. Jr.J. Med. Chem. 1996,39, 661. Oehlschlager, A. C.; Singh, S. M.; Sharma, S.J. Org. Chem. 1991,56, 3856.).One of the reactions involved in the synthesis of cholesterol without affecting the synthesis of other substances is the reaction of combining two panesyldiphosphates to form squalene, and the enzyme involved in this reaction is squalene synthase (Poulter, CD; Rilling , HC In "Biosynthesis of Isoprenoid Compounds", Porter, JW and Spurgeon, SL Eds, Wiley, New York, 1981, Vol. 1, Chapter 1). In recent years, a number of studies have been conducted on inhibitors of this enzyme (Chan, C .; Andreotti, D .; Cox, B .; Dymock, BW; Huston, JL; Keeling, SE; McCarthy, AD; Procopiou , PA; Ross, BC; Sareen, M .; Scicinski, JJ; Sharratt, PJ; Snowden, MA; Watson, NS J. Med. Chem. 1996 , 39 , 207. Koert U., Angew. Chem. Int. Ed Engl. 1995 , 34 , 773. Wilson, KE; Burk, RM; Biftu, T .; Ball, RG; Hoogsteen, K. J. Org. Chem. 1992 , 57 , 7151. Dickson, JK Jr .; Biller, SA; Magnin, DR; Petrillo, EW Jr .; Hillyer, JW; Hsieh, DC; Lan, SJ; Rinehart, JK; Gregg, RE; Harrity, TW; Jolibois, KG; Kalinowski, SS; Kunselman, LK; Mookhtiar, KA; Ciosek, CP Jr. J. Med. Chem. 1996 , 39 , 661. Oehlschlager, AC; Singh, SM; Sharma, S. J. Org. Chem. 1991 , 56 , 3856.

본 발명자들은 심장순환계 질병의 주원인이 되는 혈중 콜레스테롤을 효과적으로 강하시킬 수 있는 물질을 개발하기 위해 연구를 계속하던 중, 인체에 필요한 다른 물질의 합성에는 영향을 미치지 않고 콜레스테롤의 합성에만 관여하는 반응인 스쿠알렌 합성을 억제할 수 있는 새로운 스쿠알렌 합성 효소 저해물질을 합성하여 본 발명을 완성하게 되었다.The present inventors are continuing to develop a substance that can effectively lower blood cholesterol, which is the main cause of cardiovascular disease, and is a reaction that is involved only in the synthesis of cholesterol without affecting the synthesis of other substances required by the human body. The present invention was completed by synthesizing a new squalene synthetase inhibitor that can inhibit the synthesis.

본 발명의 목적은 체내 콜레스테롤 축적에 관여하는 새로운 구조의 스쿠알렌 합성 효소 활성 저해 화합물, 그의 제조방법 및 상기 화합물을 포함하는 심장순환계 질환예방 및 치료용 조성물을 제공하는 것이다.Disclosure of Invention It is an object of the present invention to provide a squalene synthetase activity inhibiting compound having a novel structure involved in the accumulation of cholesterol in the body, a method for preparing the same, and a composition for preventing and treating cardiovascular diseases comprising the compound.

상기 목적을 달성하기 위하여, 본 발명에서는 하기 화학식 1의 화합물 및 이의 약제학적으로 허용되는 염, 수화물 또는 용매화물을 제공한다.In order to achieve the above object, the present invention provides a compound of Formula 1 and pharmaceutically acceptable salts, hydrates or solvates thereof.

화학식 1Formula 1

상기 화학식 1에서 R1및 R2는 각각 수소; 각종 알킬, 알케닐, 방향족; 산소, 질소 및 황 원자가 포함된 방향족이 치환된 알킬, 알케닐, 방향족; 그리고 산소, 질소 및 황 원자가 포함된 방향족; 또는 하기 화학식 2로 표시되는 작용화된 알킬이다.R 1 and R 2 in Formula 1 are each hydrogen; Various alkyl, alkenyl, aromatics; Alkyl, alkenyl, aromatic substituted by aromatics containing oxygen, nitrogen and sulfur atoms; And aromatics containing oxygen, nitrogen and sulfur atoms; Or functionalized alkyl represented by the following formula (2).

또한 A 및 B 는 수소, 히드록시, 카박실릭산 중에서 선택된다.A and B are also selected from hydrogen, hydroxy, and carbaxylic acid.

상기 화학식 2 에서 X 는 탄소, 산소, 질소, 황, 할로겐 원소 및 수소를 의미한다. 여기서 X 가 수소일 때는 C 는 무시된다. Y, W, Z 는 탄소, 산소, 질소, 황 및 수소를 의미하며 Y 가 수소일 때 D 는 무시된다. C 및 D 는 각종 알킬, 알케닐, 방향족 그리고 산소, 질소 및 황원자가 포함된 방향족이 치환된 알킬, 알케닐, 방향족 그리고 산소, 질소 및 황원자가 포함된 방향족 중에서 선택된다.In Formula 2, X means carbon, oxygen, nitrogen, sulfur, halogen element, and hydrogen. Where X is hydrogen, C is ignored. Y, W, Z means carbon, oxygen, nitrogen, sulfur and hydrogen and D is ignored when Y is hydrogen. C and D are selected from various alkyl, alkenyl, aromatic and alkyl, alkenyl, aromatic substituted with oxygen, nitrogen and sulfur atoms and aromatics containing oxygen, nitrogen and sulfur atoms.

그리고 상기식에서 n 은 0 에서 10 까지의 메틸렌 수를 의미한다.And n in the above formula means a methylene number from 0 to 10.

본 명세서에서 사용되는 용어 "산소, 질소 및 황 원자가 포함된 방향족"은 모노 또는 디사이클릭 방향족으로 한 개 내지 두 개의 질소 또는 황 원자가 방향족환 안에 포함되어 있는 것을 의미한다. 본 발명의 화합물은 비대칭 탄소 중심을 가질 수 있으며, 라세미체, 라세미 화합물, 부분 입체 이성체 혼합물 및 개개 부분 입체 이성체로서 존재할 수 있으며, 이들 모든 이성체 형태는 본 발명에 포함된다.As used herein, the term "aromatics containing oxygen, nitrogen and sulfur atoms" means mono or dicyclic aromatics in which one or two nitrogen or sulfur atoms are contained in an aromatic ring. The compounds of the present invention may have asymmetric carbon centers and may exist as racemates, racemic compounds, diastereomeric mixtures and individual diastereoisomers, all of these isomeric forms being included in the present invention.

본 발명의 화합물 중 대표적인 예로는 다음 화합물이 포함된다.Representative examples of the compounds of the present invention include the following compounds.

1) 6-(트리데카닐카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산1) 6- (tridecanylcarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid

2) 6-(네릴카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산2) 6- (nerylcarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid

3) 6-(다이벤질-카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산3) 6- (dibenzyl-carbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid

4) 6-(벤질옥시카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산4) 6- (benzyloxycarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid

5) 6-(페닐-프로필카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산5) 6- (phenyl-propylcarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid

6) 6-(m-히드록시페닐에틸카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산6) 6- (m-hydroxyphenylethylcarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid

7) 6-(2-페닐-프로필카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산7) 6- (2-phenyl-propylcarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid

8) 6-(o-플루오로페닐에틸카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산8) 6- (o-fluorophenylethylcarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid

9) 6-(2-히드록시-1-메틸-에틸카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3, 5-트리카르복실산9) 6- (2-hydroxy-1-methyl-ethylcarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid

본 발명에 따른 화학식 1의 화합물은 하기 화학식 4의 바이싸이클로[2.2.2]옥트-7-엔-2,3,5,6-테트라카르복실 디안히드리드에 각종아민을 반응시켜 아미드 커플링 등의 반응을 거쳐 수득할 수 있다.The compound of formula 1 according to the present invention is reacted with various amines to bicyclo [2.2.2] oct-7-ene-2,3,5,6-tetracarboxyl dianhydride of formula (4) It can be obtained through the reaction of.

본 발명의 화학식 1의 화합물을 제조하는 구체적인 과정은 하기 반응식 1에 도시된 바와 같다.Specific process for preparing the compound of Formula 1 of the present invention is as shown in Scheme 1 below.

상기 반응식 1에 따르면, 본 발명의 바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산의 유도체는 바이싸이클로[2.2.2]옥트-7-엔-2,3,5,6-테트라카르복실 디안히드리드에 같은 당량의 각종 아민을 반응시켜 아미드를 형성하는 단계 (제 1단계) 및 생성된 아미드 화합물을 가수분해하는 단계 (제 2단계)를 거쳐 제조된다.According to Scheme 1, the bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid derivative of the present invention is bicyclo [2.2.2] oct-7-ene-2, Prepared by reacting 3,5,6-tetracarboxylic dianhydride with the same equivalent of various amines to form an amide (first step) and hydrolyzing the resulting amide compound (second step) .

이하, 하기 실시예에 의거하여 본 발명을 더욱 구체적으로 설명한다. 단, 이들 실시예는 본 발명을 예시하기 위한 것일 뿐, 본 발명의 범위가 이들로 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail based on the following examples. However, these Examples are only for illustrating the present invention, and the scope of the present invention is not limited thereto.

<실시예 1-130> 바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산 유도체들 의 합성Example 1-130 Synthesis of Bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid derivatives

바이싸이클로[2,2,2]옥트-7-엔-2,3,5,6-테트라카르복실 디안히드리드 50mg (0.20mmol)과 같은 당량의 각종 아민(하기 표 1 참조)을 테트라히드로퓨란 5ml에 넣고 상온에서 1일 동안 교반하였다.Tetrahydrofuran was added to various equivalent amines (see Table 1 below) such as bicyclo [2,2,2] oct-7-ene-2,3,5,6-tetracarboxylic dianhydride 50 mg (0.20 mmol). 5 ml and stirred at room temperature for 1 day.

아민Amine 사용한 양(0.20mmol)Amount Used (0.20 mmol) 1One 4-아미노-1-벤질피페리딘4-amino-1-benzylpiperidine 0.020ml0.020ml 2*2* 2-디엘-아미노-1-프로판올2-Diel-amino-1-propanol 0.016ml0.016ml 33 씨클로헥실아민Cyclohexylamine 0.023ml0.023ml 44 N-에틸에틸렌디아민N-ethylethylenediamine 0.021ml0.021ml 55 1-메틸피페라진1-methylpiperazine 0.022ml0.022ml 66 에탄올아민Ethanolamine 0.012ml0.012ml 77 페닐히드라진Phenylhydrazine 0.019ml0.019ml 88 노말-부틸아민Normal-Butylamine 0.020ml0.020ml 99 아닐린aniline 0.018ml0.018ml 10*10 * O-벤질히드록실아민 히드로클로라이드O-benzylhydroxylamine hydrochloride 0.032g0.032g

1111 2-메틸피페라진2-methylpiperazine 0.021g0.021 g 12*12 * 트리데실아민Tridecylamine 0.041g0.041 g 1313 히드록실아민 히드로클로라이드Hydroxylamine hydrochloride 0.014g0.014 g 1414 O-터셔리-부틸히드록실아민 히드로클로라이드O-tertiary-butylhydroxylamine hydrochloride 0.025g0.025 g 1515 O-페닐히드록실아민 히드로클로라이드O-phenylhydroxylamine hydrochloride 0.030g0.030g 1616 O-에틸히드록실아민 히드로클로라이드O-ethylhydroxylamine hydrochloride 0.020g0.020 g 1717 알릴아민Allylamine 0.015ml0.015ml 1818 메톡실아민 히드로클로라이드Methoxylamine Hydrochloride 0.061ml0.061ml 1919 이소아밀아민Isoamylamine 0.023ml0.023ml 2020 2-(메틸아미노)에탄올2- (methylamino) ethanol 0.016ml0.016ml 2121 N,O-디메틸히드록실아민 히드로클로라이드N, O-dimethylhydroxylamine hydrochloride 0.020g0.020 g 2222 디메틸아민Dimethylamine 0.021ml0.021ml 2323 N-에틸이소프로필아민N-ethylisopropylamine 0.024ml0.024ml 2424 1,3-디아미노-2-히드록시프로판1,3-diamino-2-hydroxypropane 0.018g0.018g 2525 2-피페리딘에탄올2-piperidineethanol 0.026ml0.026ml 2626 4-히드록시페딘 히드로클로라이드4-hydroxyfedine hydrochloride 0.028g0.028g 2727 4-(2-아미노에틸)모폴린4- (2-aminoethyl) morpholine 0.026ml0.026ml 2828 1-(2-아미노에틸)피페라진1- (2-aminoethyl) piperazine 0.026ml0.026ml 2929 1-(2-아미노에틸)피롤리딘1- (2-aminoethyl) pyrrolidine 0.026ml0.026ml 3030 3-(아미노메틸)피리딘3- (aminomethyl) pyridine 0.020ml0.020ml 3131 2-아미노-5-브로모피리딘2-amino-5-bromopyridine 0.035g0.035 g 3232 4-니트로아닐린4-nitroaniline 0.028g0.028g 3333 2-아미노벤질 알콜2-aminobenzyl alcohol 0.025g0.025 g 3434 퍼퓨릴아민Perfurylamine 0.018ml0.018ml 3535 2-(아미노에틸)벤지미다졸 디히드로클로라이드 히드레이트2- (aminoethyl) benzimidazole dihydrochloride hydrate 0.044g0.044 g 3636 2-아미노나프탈렌2-aminonaphthalene 0.029g0.029 g

3737 D-페니실아민D-Phenylsylamine 0.030g0.030g 3838 2-아미노-3,5-디클로로피리딘2-amino-3,5-dichloropyridine 0.033g0.033 g 3939 3-페닐-1-프로필아민3-phenyl-1-propylamine 0.0292ml0.0292ml 40*40 * 씨클로헥산메틸아민Cyclohexanemethylamine 0.0267ml0.0267ml 4141 테트라히드로퍼퓨릴아민Tetrahydroperfurylamine 0.0212ml0.0212ml 4242 3,4-디히드록시벤질아민 히드로브로마이드3,4-dihydroxybenzylamine hydrobromide 0.045g0.045 g 4343 2-에톡시벤질아민2-ethoxybenzylamine 0.0306ml0.0306ml 4444 2-메톡시벤질아민2-methoxybenzylamine 0.0268ml0.0268ml 4545 2-메틸벤질아민2-methylbenzylamine 0.0260ml0.0260ml 4646 3-메틸벤질아민3-methylbenzylamine 0.0258ml0.0258ml 4747 2-클로로벤질아민2-chlorobenzylamine 0.0248ml0.0248ml 4848 3-클로로벤질아민3-chlorobenzylamine 0.0251ml0.0251ml 4949 4-클로로벤질아민4-chlorobenzylamine 0.025ml0.025ml 5050 2-메톡시페네틸아민2-methoxyphenethylamine 0.032ml0.032ml 51*51 * 3-메톡시페네틸아민3-methoxyphenethylamine 0.0302ml0.0302ml 5252 2-플루오로페네틸아민2-fluorophenethylamine 0.0268ml0.0268ml 5353 2-(2-클로로페닐)에틸아민2- (2-chlorophenyl) ethylamine 0.0289ml0.0289ml 54*54 * 베타-메틸페네틸아민Beta-methylphenethylamine 0.0298ml0.0298ml 5555 4-아미노-1-벤질피페리딘4-amino-1-benzylpiperidine 0.0411ml0.0411 ml 5656 3-아미노-1,2-프로판올3-amino-1,2-propanol 0.0156ml0.0156ml 5757 2-아미노-1-페닐에탄올2-amino-1-phenylethanol 0.0276g0.0276g 5858 2-아미노-2-메틸-1-프로판올2-amino-2-methyl-1-propanol 0.0192ml0.0192ml 5959 4-아미노-3-히드록시벤조산4-Amino-3-hydroxybenzoic acid 0.0309g0.0309 g 6060 3,4-디아미노벤조산3,4-diaminobenzoic acid 0.0307g0.0307g 6161 2-아미노티아졸2-aminothiazole 0.020g0.020 g 6262 7-아미노-4-히드록시-2-나프탈렌술폰산 모노수화물7-amino-4-hydroxy-2-naphthalenesulfonic acid monohydrate 0.052g0.052g

6363 6-아미노카프론산6-aminocaproic acid 0.0264g0.0264 g 6464 3'-아미노아세토페논3'-aminoacetophenone 0.0272g0.0272g 6565 2-아미노안트라퀴논2-aminoanthraquinone 0.0450g0.0450 g 6666 4-아미노베조산 메틸에스터4-aminobezoic acid methyl ester 0.0305g0.0305 g 6767 3-아미노벤질 알콜3-aminobenzyl alcohol 0.0248g0.0248 g 6868 2-(2-아미노에톡시)에탄올2- (2-aminoethoxy) ethanol 0.0202ml0.0202ml 6969 1-아미노호모피페리딘1-aminohomopiperidine 0.0234ml0.0234ml 7070 5-아미노이소프탈산5-aminoisophthalic acid 0.0365g0.0365 g 7171 3,3-술포닐디아닐린3,3-sulfonyldianiline 0.050g0.050g 7272 1-아미노피페리딘1-aminopiperidine 0.0217ml0.0217ml 7373 5-아미노살리실산5-aminosalicylic acid 0.0309g0.0309 g 7474 파라-아니지딘Para-anizidine 0.0248g0.0248 g 7575 1,8-디아미노옥탄1,8-diaminooctane 0.0291g0.0291g 7676 에틸아민 모노히드로클로라이드Ethylamine monohydrochloride 0.0164g0.0164 g 77*77 * 디벤질아민Dibenzylamine 0.0387ml0.0387ml 7878 노말-디부틸아민Normal-dibutylamine 0.0339ml0.0339ml 7979 디씨클로헥실아민Dicyclohexylamine 0.0401ml0.0401ml 8080 디에탄올아민Diethanolamine 0.0193ml0.0193ml 8181 디에틸아민Diethylamine 0.0208ml0.0208ml 8282 디에틸렌트리아민Diethylenetriamine 0.0218ml0.0218ml 8383 호모베라트릴아민Homoveratrilamine 0.0340ml0.0340ml 8484 3-아미노-1-프로판올3-amino-1-propanol 0.0154ml0.0154ml 8585 4-아미노벤조산4-aminobenzoic acid 0.0276g0.0276g 8686 3-아미노-9-에틸카바졸3-amino-9-ethylcarbazole 0.0423g0.0423 g 8787 2-아미노에틸 히드로진 술페이트2-aminoethyl hydrosulfate 0.0284g0.0284 g 8888 3-아미노-1,2,4-트리아졸3-amino-1,2,4-triazole 0.0169g0.0169 g

8989 4-아미노-1,2,4-트리아졸4-amino-1,2,4-triazole 0.0169g0.0169 g 9090 1-아미노피렌1-aminopyrene 0.0438g0.0438 g 9191 벤지딘Benzidine 0.0371g0.0371 g 9292 터셔리-부틸히드라진 히드로클로라이드Tertiary-Butylhydrazine Hydrochloride 0.0251g0.0251 g 9393 씨클로프로필아민Cyclopropylamine 0.0140ml0.0140ml 9494 씨클로펜틸아민Cyclopentylamine 0.0199ml0.0199ml 9595 에틸렌디아민Ethylenediamine 0.013ml0.013ml 9696 2-아미노-1,3,4-티아디아졸2-amino-1,3,4-thiadiazole 0.0204g0.0204 g 9797 4-데실아닐린4-decylaniline 0.0470g0.0470 g 9898 N-에틸아닐린N-ethylaniline 0.0253ml0.0253ml 9999 모폴린Morpholine 0.0176ml0.0176ml 100100 인돌린Indolin 0.0226ml0.0226ml 101101 에틸 4-아미노벤조에이트Ethyl 4-aminobenzoate 0.0333g0.0333 g 102102 에틸 3-아미노벤조에이트Ethyl 3-aminobenzoate 0.0301ml0.0301ml 103103 (+,-)-2-에틸헥실아민(+,-)-2-ethylhexylamine 0.0330ml0.0330ml 104104 4-히드록시-2,2,6,6-테트라메틸 피페리딘4-hydroxy-2,2,6,6-tetramethyl piperidine 0.0317g0.0317 g 105105 이미다졸Imidazole 0.0137g0.0137 g 106106 1-페닐피페라진1-phenylpiperazine 0.0308ml0.0308ml 107107 1-아미노-4-(2-히드록시에틸)피페라진1-amino-4- (2-hydroxyethyl) piperazine 0.0293g0.0293 g 108108 에틸 1-피페라진카르복실레이트Ethyl 1-piperazinecarboxylate 0.0295ml0.0295ml 109109 4-(아미노메틸)피페리딘4- (aminomethyl) piperidine 0.0230g0.0230 g 110110 디엘-세린 메틸 에스터 히드로클로라이드DL-serine methyl ester hydrochloride 0.0314g0.0314 g 111111 인다졸Indazole 0.0238g0.0238 g 112112 1,1-디페닐히드라진 히드로클로라이드1,1-diphenylhydrazine hydrochloride 0.0445g0.0445 g 113113 히드랄라진 히드로클로라이드Hydralazine hydrochloride 0.0396g0.0396 g 114114 N-페닐-1,4-페닐렌디아민 히드로클로라이드N-phenyl-1,4-phenylenediamine hydrochloride 0.0445g0.0445 g 115115 1,4-페닐렌디아민1,4-phenylenediamine 0.0218g0.0218g

116116 메타-페닐렌디아민-4-술폰산Meta-phenylenediamine-4-sulfonic acid 0.0379g0.0379g 117117 1,2-페닐렌디아민1,2-phenylenediamine 0.0218g0.0218g 118118 (+)-페닐프로판올아민(+)-Phenylpropanolamine 0.0305g0.0305 g 119119 피페라진Piperazine 0.0174g0.0174 g 120120 1,2,4-트리아졸1,2,4-triazole 0.0139g0.0139 g 121*121 * 1,3-페닐렌디아민1,3-phenylenediamine 0.0218g0.0218g 122122 3-페녹시아닐린3-phenoxyaniline 0.0373g0.0373 g 123123 4-페녹시아닐린4-phenoxyaniline 0.0373g0.0373 g 124124 3-아미노메틸-3,5,5-트리메틸씨클로헥산올3-aminomethyl-3,5,5-trimethylcyclohexanol 0.0349g0.0349 g 125125 메틸 4-아미노시나메이트Methyl 4-aminocinnamate 0.0357g0.0357 g 126126 2-메틸씨클로헥실아민2-methylcyclohexylamine 0.0266ml0.0266ml 127127 N-메틸벤질아민N-methylbenzylamine 0.0260ml0.0260ml 128128 3-메톡시프로필아민3-methoxypropylamine 0.0206ml0.0206ml 129129 3-페닐-1-프로필아민3-phenyl-1-propylamine 0.0286ml0.0286ml 130130 프로파질아민Propazylamine 0.0138ml0.0138ml

무기산염형태의 아민인 경우에는 당량을 맞추어 탄산수소나트륨을 넣어 주었다. 이 반응물에 물 3ml을 넣고 다시 상온에서 1일 동안 교반하였다. 생성물의 생성과 아민의 소진을 TLC로 확인한 후 반응을 종결하고 감압증류로 용매를 제거하였다. 사용한 반응이 워낙 수율이 높은 것으로 알려져 있기 때문에 물질의 확인은 임의로 선택한 일부의 화합물에 대하여 질량분석을 하였다.In the case of the inorganic acid amine, sodium hydrogencarbonate was added in the same amount. 3 ml of water was added to the reaction and the mixture was stirred at room temperature for 1 day. After confirming the production of the product and the exhaustion of the amine by TLC, the reaction was terminated and the solvent was removed by distillation under reduced pressure. Since the reaction used is known to have a high yield, the identification of the substance was carried out by mass spectrometry for some compounds selected arbitrarily.

질량분석의 결과는 하기 표 2와 같다.The mass spectrometry results are shown in Table 2 below.

표 1 화합물의 번호Table 1 Numbers of Compounds 화합물명Compound name Mass(FAB, m/e)Mass (FAB, m / e) 2* 2 * 6-(2-히드록시-1-메틸-에틸카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산6- (2-hydroxy-1-methyl-ethylcarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid 342(M++ 1)342 (M + + 1) 55 6-(4-메틸-피페라진-1-카보닐)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산6- (4-Methyl-piperazine-1-carbonyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid 367(M++ 1)367 (M + + 1) 99 6-페닐카바모일-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산6-phenylcarbamoyl-bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid 360(M++ 1)360 (M + + 1) 40* 40 * 6-싸이클로헥실메틸카바모일-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산6-Cyclohexylmethylcarbamoyl-bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid 380(M++ 1)380 (M + + 1) 54* 54 * 6-(2-페닐-프로필카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산6- (2-phenyl-propylcarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid 402(M++ 1)402 (M + + 1) 77* 77 * 6-(다이벤질-카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산6- (dibenzyl-carbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid 464(M++ 1)464 (M + + 1)

<스쿠알렌 합성 효소의 저해 효과 측정><Measurement of the inhibitory effect of squalene synthase>

스쿠알렌 합성의 활성은 효소에 의하여 두 개의 파네실디포스페이트가 결합하여 형성된 스쿠알렌의 양을 측정하여 결정하였는데 본발명에는 쉐크터(Shechter) 등의 방법(JBV.,267, 8628-8635 (1992))을 일부 수정하여 사용하였다.The activity of squalene synthesis was determined by measuring the amount of squalene formed by binding two panesyldiphosphates by an enzyme. In the present invention, Schechter et al. (JBV., 267, 8628-8635 (1992)) Some modifications were used.

스쿠알렌 합성 활성을 측정하기 위해서 먼저 위스터 찰스 리버(Wistar Charles Liver) 쥐로부터 스쿠알렌 합성 효소 활성을 보이는 마이크로좀 분획(microsomal fraction)을 얻었다.In order to measure squalene synthesis activity, a microsomal fraction showing squalene synthase activity was first obtained from Wistar Charles Liver rats.

다음 준비한 반응용액 (100mM 포타슘 포스페이트(pH 7.4), 5mM MgCl2, 10mM DTT, 1mM NADPH, 10mM KF)에 상기에서 준비한 스쿠알렌 합성 효소원인 마이크로좀과 방사성 동위원소3H로 표지된 파네실 피로포스페이트([3H]FPP)를 기질로 10μM 되게 가한후 35℃에서 15분간 반응시키고 1몰 EDTA (pH 9.2)를 5㎕ 첨가하여 반응을 중지하였다. 이 반응물에 0.5% 스쿠알렌을 5㎕ 첨가하여 잘 섞은 후 이 중 5㎕를 100℃에서 5분간 미리 구어 낸 실리카겔판 위에 일정 간격으로 점착시켰다. 시료가 점착된 실리카겔판을 전개용매인 톨루엔:핵산(5:95)을 이용하여 전개시키고, 전개된 실리카겔판을 요오드 개체에 쐬어 반을 생성물인 스쿠알렌을 판별하였다. 이 판별된 생성물 부위를 오려내어 3ml의 방사성 측정용액 (하이드로플루오르(Hydrofluor), 미국)에 넣은 후 방사성 동위원소 측정기(1900CA, TRI-CARB, 팩카드(Packard)사, 미국)으로 반응산물인 스쿠알렌 내의 방사능을 측정하여 스쿠알렌 합성 효소의 활성을 정량하였다.And then the prepared reaction solution (100mM potassium phosphate (pH 7.4), 5mM MgCl 2 , 10mM DTT, 1mM NADPH, 10mM KF) on squalene synthetase cause microsomal and radioactive phosphate fatigue Ipanema chamber labeled with 3 H prepared in ( [ 3 H] FPP) was added to the substrate to 10 μM and reacted at 35 ° C. for 15 minutes, and the reaction was stopped by adding 5 μl of 1 mol EDTA (pH 9.2). 5 µl of 0.5% squalene was added to the reaction mixture, and the mixture was mixed well, and then 5 µl of the mixture was adhered at a predetermined interval on a silica gel plate which was previously baked at 100 ° C. for 5 minutes. The silica gel plate to which the sample adhered was developed using toluene: nucleic acid (5:95) as a developing solvent, and the developed silica gel plate was poured into the iodine individual to determine the squalene as a half product. The determined product site was cut out and placed in 3 ml of radiometric solution (Hydrofluor, USA) and then squalene, a reaction product, with a radioisotope meter (1900CA, TRI-CARB, Packard, USA). Radioactivity in the cells was measured to quantify the activity of squalene synthetase.

한편, 상기와 같은 조건에서 다양한 농도의 화합물을 가하여 스쿠알렌 합성 효소의 활성을 측정하고, 이 때 각 화합물에 의하여 스쿠알렌 합성 효소의 활성이 억제되는 정도를 백분율로 구하여 각화합물의 억제능력을 분석하였다. 그 결과 <실시예 1-130>에서 합성한 화합물들을 100μM 농도에서 조사했을 때는 15% 에서 90% 까지의 효소 활성 저해의 효과를 보였다.On the other hand, the activity of the squalene synthase was measured by adding compounds of various concentrations under the same conditions as above, and at this time, the degree of inhibition of the activity of the squalene synthetase by each compound was determined as a percentage to analyze the inhibitory ability of each compound. As a result, when the compounds synthesized in <Example 1-130> were irradiated at 100μM concentration showed an effect of inhibiting the enzyme activity from 15% to 90%.

이상에서 살펴본 바와 같이, 본 발명의 화합물은 체내 콜레스테롤 축적에 관여하는 스쿠알렌 합성 효소의 활성을 효과적으로 억제하여 고지혈증, 관상동맥심장병, 동맥경화증, 심근경색증 등과 같은 심장순환계 질환의 예방 및 치료에 유용하게 이용될 수 있다.As described above, the compound of the present invention effectively inhibits the activity of squalene synthase that is involved in the accumulation of cholesterol in the body, which is useful for the prevention and treatment of cardiovascular diseases such as hyperlipidemia, coronary heart disease, arteriosclerosis, and myocardial infarction. Can be.

Claims (4)

하기 화학식 1의 바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산의 유도체 화합물 및 이의 약제학적으로 허용되는 염, 수화물 또는 용매화물:Derivative compounds of bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid of formula 1 and pharmaceutically acceptable salts, hydrates or solvates thereof: 화학식 1Formula 1 상기 화학식 1에서 R1및 R2는 각각 수소; 각종 알킬, 알케닐, 방향족; 산소, 질소 및 황 원자가 포함된 방향족이 치환된 알킬, 알케닐, 방향족; 그리고 산소, 질소 및 황 원자가 포함된 방향족; 또는 하기 화학식 2로 표시되는 작용화된 알킬이다.R 1 and R 2 in Formula 1 are each hydrogen; Various alkyl, alkenyl, aromatics; Alkyl, alkenyl, aromatic substituted by aromatics containing oxygen, nitrogen and sulfur atoms; And aromatics containing oxygen, nitrogen and sulfur atoms; Or functionalized alkyl represented by the following formula (2). 또한 A 및 B 는 수소, 히드록시, 카박실릭산 중에서 선택된다.A and B are also selected from hydrogen, hydroxy, and carbaxylic acid. 화학식 2Formula 2 상기 화학식 2 에서 X 는 탄소, 산소, 질소, 황, 할로겐 원소 및 수소를 의미한다. 여기서 X 가 수소일 때는 C 는 무시된다. Y, W, Z 는 탄소, 산소, 질소, 황 및 수소를 의미하며 Y 가 수소일 때 D 는 무시된다. C 및 D 는 각종 알킬, 알케닐, 방향족 그리고 산소, 질소 및 황원자가 포함된 방향족이 치환된 알킬, 알케닐, 방향족 그리고 산소, 질소 및 황원자가 포함된 방향족 중에서 선택된다.In Formula 2, X means carbon, oxygen, nitrogen, sulfur, halogen element, and hydrogen. Where X is hydrogen, C is ignored. Y, W, Z means carbon, oxygen, nitrogen, sulfur and hydrogen and D is ignored when Y is hydrogen. C and D are selected from various alkyl, alkenyl, aromatic and alkyl, alkenyl, aromatic substituted with oxygen, nitrogen and sulfur atoms and aromatics containing oxygen, nitrogen and sulfur atoms. 그리고 상기식에서 n 은 0 에서 10 까지의 메틸렌 수를 의미한다.And n in the above formula means a methylene number from 0 to 10. 제 1항에 있어서, 하기 화합물로 이루어진 군에서 선택되는 화합물:The compound of claim 1 selected from the group consisting of: 6-(트리데카닐카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산;6- (tridecanylcarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid; 6-(네릴카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산;6- (nerylcarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid; 6-(다이벤질-카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산;6- (dibenzyl-carbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid; 6-(벤질옥시카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산;6- (benzyloxycarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid; 6-(페닐-프로필카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산;6- (phenyl-propylcarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid; 6-(m-하이드록시페닐에틸카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산;6- (m-hydroxyphenylethylcarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid; 6-(2-페닐-프로필카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산;6- (2-phenyl-propylcarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid; 6-(o-플루오로페닐에틸카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산; 및6- (o-fluorophenylethylcarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid; And 6-(2-히드록시-1-메틸-에틸카바모일)-바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산.6- (2-hydroxy-1-methyl-ethylcarbamoyl) -bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid. 바이싸이클로[2.2.2]옥트-7-엔-2,3,5,6-테트라카르복실 디안히드리드에 같은 당량의 각종 아민을 반응시켜 아미드를 형성하는 단계 (제 1단계) 및 생성된 아미드 화합물을 가수분해하는 단계 (제 2단계)로 이루어지는 것을 특징으로 하는 제 1항의 바이싸이클로[2.2.2]옥트-7-엔-2,3,5-트리카르복실산의 유도체의 제조방법.Reacting bicyclo [2.2.2] oct-7-ene-2,3,5,6-tetracarboxyl dianhydride with the same equivalent of various amines to form an amide (first step) and the resulting amide A method for producing a derivative of bicyclo [2.2.2] oct-7-ene-2,3,5-tricarboxylic acid according to claim 1, which comprises the step of hydrolyzing the compound (second step). 반응식 1Scheme 1 제 1항의 화합물을 유효성분으로 함유하는 고지혈증, 관상동맥경화증, 심근경색증 등과 같은 심장순환계 질환의 예방제 및 치료제용 약학적 조성물.A pharmaceutical composition for preventing and treating cardiovascular diseases such as hyperlipidemia, coronary arteriosclerosis, myocardial infarction, etc. containing the compound of claim 1 as an active ingredient.
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JPH08301841A (en) * 1995-05-10 1996-11-19 Green Cross Corp:The Squalene-epoxydase activity inhibitor
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993000331A1 (en) * 1991-06-20 1993-01-07 Pfizer Inc. Fluoroalkoxybenzylamino derivatives of nitrogen containing heterocycles
US5322855A (en) * 1992-10-19 1994-06-21 Merck & Co., Inc. Cholesterol lowering compounds
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