本發(fā)明涉及化學(xué)合成技術(shù)領(lǐng)域,具體是一種5-氨基-3,4-二氫-2(1H)-喹啉酮類化合物及其合成方法和用途。
背景技術(shù):
喹啉酮類藥物是人工合成的一類抗菌藥物,其在抗細菌、抗真菌、抗腫瘤、抗病毒、抗焦慮、抗壞血酸等方面的活性引起人們的廣泛關(guān)注,目前已開發(fā)至第四代,廣泛應(yīng)用于臨床、藥物預(yù)防和治療多種細菌和支原體疾病。含有2-(1H)喹啉酮結(jié)構(gòu)的化合物具有多種生物活性,其環(huán)上引入不同的取代基或側(cè)鏈,可產(chǎn)生不同的藥理活性,如抗精神失常、抗血小板聚集、正性肌力、抗腫瘤、抗?jié)兒涂惯^敏、幾丁質(zhì)合成酶抑制劑等作用。這類化合物的研究文章可見:Bioconjugate Chem.2004,15,1088-1094;J.Med.Chem.2006,49,971-983;J.Med.Chem.2010,53,7739-7755;Organic Process Research&Development 2004,8,643-650;Bioorg.Med.Chem.Lett.10(2000)1459-1462。但隨著喹啉酮類藥物的長期使用,其耐藥性也日趨嚴重,因此迫切需要開發(fā)新的喹啉酮類藥物。
技術(shù)實現(xiàn)要素:
本發(fā)明的目的在于提供一種5-氨基-3,4-二氫-2(1H)-喹啉酮類化合物及其合成方法和用途,以解決上述背景技術(shù)中提出的問題。
為實現(xiàn)上述目的,本發(fā)明提供如下技術(shù)方案:
一種5-氨基-3,4-二氫-2(1H)-喹啉酮類化合物,所述化合物的結(jié)構(gòu)通式為:
其中R為或雜環(huán);R1為氫、氯、甲基或氨基;R2為氫、氟或硝基;R3為氫、氟、氯、溴、甲基、甲氧基、氨基或硝基;R4、R5為羥乙基或芐基;雜環(huán)為
進一步的,該化合物的結(jié)構(gòu)通式為:
其中R為3-FC6H4、4-FC6H4、2-ClC6H4、4-ClC6H4、C6H4、3-O2NC6H4、4-O2NC6H4、4-CH3OC6H4、4-BrC6H4、4-CH3C6H4、2-NH2C6H4、4-NH2C6H4、2,4-Cl2C6H4、2-CH3C6H4、(C6H5CH2)2N、(HOCH2CH2)2N、2-C5H4N、2-C4H3S、2-C4H3O。
一種所述的5-氨基-3,4-二氫-2(1H)-喹啉酮類化合物的合成方法,合成按如下方式進行:
合成方式具體如下:
a)5-氨基-3,4-二氫喹啉-2(1H)-酮與乙醛和甲酸銨在Pd-C催化下單取代得化合物2;
b)化合物2在甲醇溶液中,在催化劑氯化鋅的存在下與環(huán)氧乙烷反應(yīng),得羥乙基化化合物3;
c)化合物3與Boc-丙氨酸經(jīng)DCC縮合得化合物4;
d)化合物4在二氯甲烷中經(jīng)三氟乙酸脫保護得化合物5;
e)化合物5再與相應(yīng)的羧酸衍生物反應(yīng),所得化合物經(jīng)氯化氫處理得到部分化合物;
f)化合物5與氯乙醇或芐氯反應(yīng),所得化合物經(jīng)氯化氫處理得到其它化合物。
進一步的,合成的具體條件如下:
a)5-氨基-3,4-二氫喹啉-2(1H)-酮與乙醛、甲酸胺、Pd-C的摩爾比為1:1.1~1.3:4.5~5.5:0.1,異丙醇和水作溶劑,室溫反應(yīng);
b)化合物2與環(huán)氧乙烷、氯化鋅的摩爾比1:2.8~3.2:1,用甲醇作溶劑,冰浴下加環(huán)氧乙烷,室溫反應(yīng);
c)化合物3與Boc-丙氨酸、HOBT、DMAP、DCC的摩爾比為1:1:1:0.1:1.0~1.2,二氯甲烷作溶劑,冰浴下滴加DCC的DCM液,室溫反應(yīng);
d)化合物4與三氟乙酸的摩爾比為1:4.5~5.5,冰浴下滴加三氟乙酸的DCM液,室溫反應(yīng);
e)化合物5再與相應(yīng)的羧酸衍生物、HOBT、DMAP、DCC的摩爾比為1:1:1:0.1:1.0~1.2二氯甲烷作溶劑,冰浴下滴加DCC的DCM液,室溫反應(yīng);
f)化合物5與氯乙醇或芐氯、碳酸鉀、碘化鉀的摩爾比為1:1.8~2.2:1.8~2.2:0.1,乙腈作溶劑,回流反應(yīng)。
一種所述的5-氨基-3,4-二氫-2(1H)-喹啉酮類化合物在制備抗病原微生物藥物中的應(yīng)用。
進一步的,所述微生物為病原細菌或病原真菌,如大腸桿菌、金黃色葡萄球菌、枯草桿菌、變形桿菌、白假絲酵母菌等。
一種藥物組合物,其含有權(quán)利要求1或2所述的5-氨基-3,4-二氫-2(1H)-喹啉酮類化合物和藥學(xué)上可接受的載體。
與現(xiàn)有技術(shù)相比,本發(fā)明的有益效果是:
經(jīng)生物活性實驗證明,本發(fā)明用作抗菌試劑抑菌效果較好,可用于制備抗病原微生物的藥物中,屬于創(chuàng)造性的新的化合物。
具體實施方式
下面將結(jié)合本發(fā)明實施例中,對本發(fā)明實施例中的技術(shù)方案進行清楚、完整地描述,顯然,所描述的實施例僅僅是本發(fā)明一部分實施例,而不是全部的實施例。基于本發(fā)明中的實施例,本領(lǐng)域普通技術(shù)人員在沒有做出創(chuàng)造性勞動前提下所獲得的所有其他實施例,都屬于本發(fā)明保護的范圍。
實施例1:化合物2的制備
將鈀碳4.6g(4.32mmol,含量10%)加入100ml異丙醇中,攪拌5min。稱取甲酸銨13.6g(215.81mmol)加入20ml水中到溶解完全后,再將其加入上述反應(yīng)液中。加入5-氨基-3,4-二氫喹啉-2(1H)-酮7.0g(43.16mmol),滴加40%的乙醛水溶液5.71g(51.79mmol),室溫反應(yīng)4h。抽濾,濾液旋干,加入二氯甲烷50ml溶解產(chǎn)物,依次用飽和氯化鈉溶液、水洗滌,無水硫酸鈉干燥。旋干,經(jīng)干燥得淺黃粉未狀固體6.6g,Mp=168-170℃,收率80%。
實施例2:化合物3的制備
稱取化合物26.5g(34.17mmol)用100ml甲醇溶解,再加入氯化鋅4.34g(34.17mmol),冰鹽浴降溫到0℃,加入用冷卻至0℃的甲醇溶解的環(huán)氧乙烷4.1g(102.51mmol),室溫反應(yīng)10h。旋蒸,所得油狀物依次加入乙酸乙酯70ml、水30ml、氨水15ml。靜置分層,水層依次用乙酸乙酯50ml、25ml萃取兩次,合并有機層,無水硫酸鈉干燥。旋干,得淺黃色油狀物7.1g,收率89%。
實施例3:化合物4的制備
稱取Boc-丙氨酸3.5g(18.5mmol)加入30ml二氯甲烷中,再依次加入1-羥基苯并三唑2.5g(18.5mmol)、二甲基胺基吡啶0.21g(1.85mmol),N,N-二環(huán)己基碳二酰亞胺4.2g(20.35mmol),攪拌反應(yīng)0.5h。滴加化合物34.33g(18.5mmol)的二氯甲烷溶液,室溫反應(yīng)6h。旋干,加乙酸乙酯30ml,抽濾,濾液依次用飽和的碳酸氫鈉溶液、水洗滌,無水硫酸鈉干燥。旋干,得化合物4的黃色油狀物6.8g,收率90%。
實施例4:化合物5的制備
稱取化合物4(6.0g 14.8mmol)加入30ml二氯甲烷中,冰鹽浴降溫至0℃,滴加三氟乙酸8.45g(74.0mmol)的二氯甲烷溶液,室溫反應(yīng)2h。旋蒸,得黃色油狀物,加二氯甲烷溶解,冰水浴降溫至0-5℃,用三乙胺緩慢調(diào)PH至8-9,靜置分液,有機層依次用飽和氯化鈉溶液、水洗滌,無水硫酸鈉干燥。旋干,得黃得油狀物3.72g,收率82%。
實施例5:化合物6a、7a的制備
稱取3-氟苯甲酸0.31g(1.0mmol)加入10ml二氯甲烷中,再依次加入1-羥基苯并三唑0.14g(1.0mmol)、二甲基胺基吡啶0.01g(0.1mmol),N,N-二環(huán)己基碳二酰亞胺攪0.25g(1.1mmol),攪拌反應(yīng)0.5h。滴加化合物50.31g(1.0mmol)的二氯甲烷溶液,室溫反應(yīng)6h。旋干,加乙酸乙酯30ml,抽濾,濾液依次用飽和的碳酸氫鈉溶液、水洗滌,無水硫酸鈉干燥。旋干,得黃色油狀物,過柱,得化合物6a,成鹽后得白色粉未狀固體7a 0.31g,收率72%。
實施例6:參照實例5,可以合成以下結(jié)構(gòu)化合物
其中R為
7b 4-FC6H4 7c 2-ClC6H4 7d 4-ClC6H4 7e C6H4 7f3-O2NC6H4
7g 4-O2NC6H4 7h 4-CH3OC6H47i 4-BrC6H4 7j 4-CH3C6H4 7k 2-NH2C6H4
7l 4-NH2C6H4 7m 2,4-Cl2C6H4 7n 2-CH3C6H4 11a 2-C5H4N 11b 2-C4H3S
11c 2-C4H3O
實施例7:化合物8a、9a的制備
依次稱取化合物50.31g(1mmol)、氯乙醇0.16g(2mmol)、碳酸鉀0.28g(2mmol)、碘化鉀0.017g(0.1mmol)加入10ml乙腈溶液中,回流反應(yīng)8h。抽濾,旋蒸,加乙酸乙酯15ml,依次用飽和氯化鈉溶液、水洗滌,無水硫酸鈉干燥。旋干,過柱,得化合物8a,成鹽后得白色粉未狀固體9a 0.3g,收率75%。
實施例8:參照實例6的合成方法,可以合成化合物8b,9b。
實施例9
上述制得的化合物,經(jīng)X-6精密顯微熔點測定儀測定熔點(未校正);1HNMR譜用BrukerAV-300型傅立葉變換核磁共振儀測定,使用Shimadzu LC-MS-2010A/EV測定,其具體分析數(shù)據(jù)如下:
N-(3-fluorobenzoyl)-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)amino]ethyl ester hydrochloride(7a)
Yield 72%;Mp=152-154℃;1H NMR(300MHz,DMSO)δ10.28(s,1H,quinolin,-CONH-),9.26(d,J=6.7Hz,1H,-CONH-),7.71(s,1H,Ar-H2),7.64–7.55(m,2H,Ar-H4,H6),7.47(t,J=7.8Hz,1H,Ar-H5),7.09(t,J=7.8Hz,1H,quinolin-H7),6.69(d,J=7.9Hz,1H,quinolin-H8),6.51(d,J=7.7Hz,1H,quinolin-H6),4.33-4.40(m,1H,CH),3.82-3.95(m,4H,-CH2CH2-),3.41(q,J=6.6Hz,2H,-CH2-),3.08(t,J=7.1Hz,2H,quinolin-H4),2.37(t,J=7.1Hz,2H,quinolin-H3),1.31(d,J=6.5Hz,3H,-CH3),0.93(t,J=6.6Hz,3H,-CH3);LC-MS(ESI):m/z 428[M+H]+
N-(4-fluorobenzoyl)-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)amino]ethyl ester hydrochloride(7b)
Yield 75%;Mp=174-176℃;1H NMR(300MHz,DMSO)δ10.19(s,1H,quinolin,-CONH-),8.87(d,J=6.9Hz,1H,-CONH-),7.74(d,J=8.3Hz,2H,Ar-H2,H6),7.61(d,J=8.3Hz,2H,Ar-H3,H5),7.15(t,J=7.8Hz,1H,quinolin-H7),6.76(d,J=7.9Hz,1H,quinolin-H8),6.58(d,J=7.7Hz,1H,quinolin-H6),4.39-4.48(m,1H,CH),3.71-3.85(m,4H,-CH2CH2-),3.38(q,J=6.3Hz,2H,-CH2-),2.88(t,J=7.1Hz,2H,quinolin-H4),2.35(t,J=7.1Hz,2H,quinolin-H3),1.32(d,J=7.3 Hz,3H,CH3),0.89(t,J=6.3 Hz,3H,CH3);LC-MS(ESI):m/z428[M+H]+
N-(2-chlorobenzoyl)-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)amino]ethyl ester hydrochloride(7c)
Yield 65%;Mp=194-195℃;1H NMR(300 MHz,DMSO-d6)δ10.37(s,1H,quinolin,-CONH-),8.89(d,J=7.1 Hz,1H,-CONH-),7.48-7.33(m,4H,Ar-H3,H4,H5,H6),7.20(t,J=7.8 Hz,1H,quinolin-H7),6.79(d,J=7.7 Hz,1H,quinolin-H8),6.65(d,J=7.7 Hz,1H,quinolin-H6),4.30-4.40(m,1H,CH),3.96-4.15(m,4H,-CH2CH2-),3.49(q,J=6.8 Hz,2H,-CH2-),3.15(t,J=7.3 Hz,2H,quinolin-H4),2.37(t,J=7.3 Hz,2H,quinolin-H3),1.24(d,J=6.7 Hz,3H,-CH3),0.94(t,J=6.8 Hz,3H,-CH3);LC-MS(ESI):m/z 445[M+H]+
N-(4-chlorobenzoyl)-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yll)amino]ethyl ester hydrochloride(7d)
Yield 72%;Mp=197-199℃;1H NMR(300 MHz,DMSO)δ10.26(s,1H,quinolin,-CONH-),8.81(d,J=6.7 Hz,1H,-CONH-),7.80(d,J=8.2 Hz,2H,Ar-H2,H6),7.63(d,J=8.2Hz,2H,Ar-H3,H5),7.17(t,J=7.8 Hz,1H,quinolin-H7),6.79(d,J=7.9 Hz,1H,quinolin-H8),6.55(d,J=7.7 Hz,1H,quinolin-H6),4.26-4.35(m,1H,CH),3.70-3.85(m,4H,-CH2CH2-),3.22(q,J=6.3 Hz,2H,-CH2-),2.98(t,J=7.2 Hz,2H,quinolin-H4),2.31(t,J=7.2 Hz,2H,quinolin-H3),1.36(d,J=7.3 Hz,3H,-CH3),0.89(t,J=6.3 Hz,3H,-CH3);LC-MS(ESI):m/z445[M+H]+
N-benzoyl-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)amino]ethyl ester hydrochloride(7e)
Yield 80%;Mp=128-130℃;1H NMR(300 MHz,DMSO)δ10.33(s,1H,quinolin,-CONH-),9.09(d,J=6.6 Hz,1H,-CONH-),8.18-8.30(m,2H,Ar-H2,H6),7.76-7.91(m,3H,Ar-H3,H4,H5),7.05(t,J=7.8 Hz,1H,quinolin-H7),6.88(d,J=7.9 Hz,1H,quinolin-H8),6.61(d,J=7.7 Hz,1H,quinolin-H6),4.28-4.37(m,1H,CH),3.82-3.99(m,4H,-CH2CH2-),3.24(q,J=6.3 Hz,2H,-CH2-),2.97(t,J=7.2 Hz,2H,quinolin-H4),2.33(t,J=7.2 Hz,2H,quinolin-H3),1.36(d,J=7.3 Hz,3H,-CH3),0.91(t,J=6.3 Hz,3H,-CH3);LC-MS(ESI):m/z 410[M+H]+
N-(3-nitrobenzoyl)-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)amino]e thyl ester hydrochloride(7f)
Yield 78%;Mp=168-169℃;1H NMR(300 MHz,DMSO)δ10.31(s,1H,quinolin,-CONH-),9.36(d,J=6.7 Hz,1H,-CONH-),8.71(s,1H,Ar-H2),8.30–8.46(m,2H,Ar-H4,H6),7.77(t,J=7.8 Hz,1H,Ar-H5),7.29(t,J=7.8 Hz,1H,quinolin-H7),6.89(d,J=7.9 Hz,1H,quinolin-H8),6.61(d,J=7.7 Hz,1H,quinolin-H6),4.32-4.46(m,1H,-CH),3.84-3.99(m,4H,-CH2CH2-),3.50(q,J=6.6 Hz,2H,-CH2-),3.10(t,J=7.1 Hz,2H,quinolin-H4),2.29(t,J=7.1Hz,2H,quinolin-H3),1.32(d,J=6.5 Hz,3H,-CH3),0.92(t,J=6.6 Hz,3H,-CH3);LC-MS(ESI):m/z 455[M+H]+
N-(4-nitrobenzoyl)-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)amino]e thyl ester hydrochloride(7g)
Yield 82%;Mp=127-129℃;1H NMR(300 MHz,DMSO)δ10.28(s,1H,quinolin,-CONH-),9.17(d,J=6.7 Hz,1H,-CONH-),8.66(d,J=8.4 Hz,2H,Ar-H3,H5),8.30(d,J=8.3Hz,2H,Ar-H2,H6),7.18(t,J=7.8 Hz,1H,quinolin-H7),6.76(d,J=7.9 Hz,1H,quinolin-H8),6.59(d,J=7.7 Hz,1H,quinolin-H6),4.29-4.41(m,1H,CH),3.93-4.07(m,4H,-CH2CH2-),3.43(q,J=6.7 Hz,2H,-CH2-),3.11(t,J=7.1 Hz,2H,quinolin-H4),2.22(t,J=7.1 Hz,2H,quinolin-H3),1.27(d,J=6.4 Hz,3H,-CH3),0.90(t,J=6.8 Hz,3H,-CH3);LC-MS(ESI):m/z455[M+H]+
N-(4-methoxybenzoyl)-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)ami no]ethyl ester hydrochloride(7h)
Yield 75%;Mp=159-161℃;1H NMR(300 MHz,DMSO)δ10.31(s,1H,quinolin,-CONH-),8.80(d,J=6.9 Hz,1H,-CONH-),7.89(d,J=7.8 Hz,2H,Ar-H2,H6),7.27(d,J=7.9Hz,1H,Ar-H3,H5),6.98(t,J=8.0 Hz,2H,quinolin-H7),6.78(d,J=7.9 Hz,1H,quinolin-H8),6.61(d,J=7.8 Hz,1H,quinolin-H6),4.33-4.42(m,1H,CH),3.86-3.95(m,4H,-CH2CH2-),3.78(s,3H,-OCH3),3.63(q,J=6.9 Hz,2H,-CH2-),3.10(t,J=7.3 Hz,2H,quinolin-H4),2.26(t,J=7.3 Hz,2H,quinolin-H3),1.30(d,J=6.8 Hz,3H,-CH3),0.92(t,J=6.9 Hz,3H,-CH3);LC-MS(ESI):m/z 440[M+H]+
N-(4-bromobenzoyl)-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)amino]ethyl ester hydrochloride(7i)
Yield 84%;Mp>300℃;1H NMR(300 MHz,DMSO)δ10.19(s,1H,quinolin,-CONH-),8.87(d,J=6.9 Hz,1H,-CONH-),7.84(d,J=8.3 Hz,2H,Ar-H2,H6),7.66(d,J=8.3 Hz,2H,Ar-H3,H5),7.15(t,J=7.8 Hz,1H,quinolin-H7),6.76(d,J=7.9 Hz,1H,quinolin-H8),6.58(d,J=7.7 Hz,1H,quinolin-H6),4.39-4.48(m,1H,CH),3.21-3.35(m,4H,-CH2CH2-),2.98(q,J=6.3 Hz,2H,-CH2-),2.88(t,J=7.1 Hz,2H,quinolin-H4),2.35(t,J=7.1 Hz,2H,quinolin-H3),1.36(d,J=7.3 Hz,3H,-CH3),0.89(t,J=6.3 Hz,3H,-CH3);LC-MS(ESI):m/z 489[M+H]+
N-(4-methylbenzoyl)-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)amino]ethyl ester hydrochloride(7j)
Yield 84%;Mp=205-207℃;1H NMR(300 MHz,DMSO)δ10.12(s,1H,quinolin,-CONH-),8.76(d,J=6.9 Hz,1H,-CONH-),7.80(d,J=7.7 Hz,2H,Ar-H2,H6),7.27(d,J=7.8Hz,2H,Ar-H3,H5),7.15(t,J=7.9 Hz,1H,quinolin-H7),6.99(d,J=7.9 Hz,1H,quinolin-H8),6.70(d,J=7.8 Hz,1H,quinolin-H6),4.31-4.39(m,1H,CH),3.97-4.12(m,4H,-CH2CH2-),2.92(q,J=6.8 Hz,2H,-CH2-),2.88(t,J=7.3 Hz,2H,quinolin-H4),2.35(s,3H,Ar-CH3),2.28(t,J=7.3 Hz,2H,quinolin-H3),1.33(d,J=7.1 Hz,3H,-CH3),0.89(t,J=6.8 Hz,3H,-CH3);LC-MS(ESI):m/z 424[M+H]+
N-(2-aminobenzoyl)-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)amino]ethyl ester hydrochloride(7k)
Yield 62%;Mp=158-160℃;1H NMR(300 MHz,DMSO)δ10.38(s,1H,quinolin,-CONH-),9.19(d,J=6.2 Hz,1H,-CONH-),7.86(d,J=7.4 Hz,1H,Ar-H6),7.41-7.47(m,1H,Ar-H4),7.28-7.39(m,2H,Ar-H3,H5),7.24(t,J=7.9 Hz,1H,quinolin-H7),6.95(d,J=6.7 Hz,1H,quinolin-H8),6.65(d,J=8.1 Hz,1H,quinolin-H6),4.38-4.49(m,1H,CH),4.13(s,2H,Ar-NH2),3.66-3.78(m,4H,-CH2CH2-),3.02(q,J=6.9 Hz,2H,-CH2-),2.77(t,J=7.3 Hz,2H,quinolin-H4),2.30(t,J=7.3 Hz,2H,quinolin-H3),1.29(d,J=6.9 Hz,3H,-CH3),0.92(t,J=6.9Hz,3H,-CH3);LC-MS(ESI):m/z 425[M+H]+
N-(4-aminobenzoyl)-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)amino]ethyl ester hydrochloride(7l)
Yield 73%;Mp=186-189℃;1H NMR(300 MHz,DMSO)δ10.28(s,1H,quinolin,-CONH-),8.85(d,J=6.9 Hz,1H,-CONH-),7.89(d,J=8.3 Hz,2H,Ar-H2,H6),7.23(t,J=7.9Hz,1H,quinolin-H7),7.19(d,J=8.3 Hz,2H,Ar-H3,H5),6.85(t,J=7.9 Hz,1H,quinolin-H8),6.69(d,J=7.8 Hz,1H,quinolin-H6),5.20(s,2H,Ar-NH2),4.37–4.48(m,1H,CH),3.93-4.08(m,4H,-CH2CH2-),3.23(q,J=6.7 Hz,2H,-CH2-),3.10(t,J=7.3 Hz,2H,quinolin-H4),2.32(t,J=7.3 Hz,2H,quinolin-H3),1.31(d,J=7.2 Hz,3H,-CH3),0.93(t,J=6.8 Hz,3H,-CH3);LC-MS(ESI):m/z 425[M+H]+
N-(2,4-dichlorobenzoyl)-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)am ino]ethyl ester hydrochloride(7m)
Yield 83%;Mp=128-130℃;1H NMR(300 MHz,DMSO)δ10.30(s,1H,quinolin,-CONH-),8.96(d,J=7.0 Hz,1H,-CONH-),7.66(s,1H,Ar-H3),7.48(d,J=8.0 Hz,1H,Ar-H6),7.40(d,J=8.2 Hz,1H,Ar-H5),7.27((t,J=7.9 Hz,1H,quinolin-H7),6.94(d,J=7.9Hz,1H,quinolin-H8),6.87(d,J=7.9 Hz,1H,quinolin-H6),4.40-4.48(m,1H,CH),3.88-4.03(m,4H,-CH2CH2-),3.19(q,J=6.7 Hz,2H,-CH2-),3.14(t,J=7.3 Hz,2H,quinolin-H4),2.36(t,J=7.3 Hz,2H,quinolin-H3),1.24(d,J=6.8 Hz,3H,-CH3),0.93(t,J=6.9 Hz,3H,-CH3);LC-MS(ESI):m/z 479[M+H]+
N-(2-methylbenzoyl)-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)amino]ethyl ester hydrochloride(7n)
Yield 82%;Mp=175-177℃;1H NMR(300 MHz,DMSO)δ10.03(s,1H,quinolin,-CONH-),8.65(d,J=6.90 Hz,1H,-CONH-),7.23-7.31(m,4H,Ar-H3,H4,H5,H6),7.08(t,J=7.9 Hz,1H,quinolin-H7),6.85(d,J=7.9 Hz,1H,quinolin-H8),6.65(d,J=7.9 Hz,1H,quinolin-H6).4.29-4.35(m,1H,CH),3.91-4.06(m,4H,-CH2CH2-),2.96(q,J=6.8 Hz,2H,-CH2-),2.84(t,J=7.3 Hz,2H,quinolin-H4),2.31(s,3H,Ar-CH3),2.22(t,J=7.3 Hz,2H,quinolin-H3),1.29(d,J=7.1 Hz,3H,-CH3),0.88(t,J=6.8 Hz,3H,-CH3);LC-MS(ESI):m/z424[M+H]+
N,N-dihydroxyethyl-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)amino]ethyl ester hydrochloride(9a)
Yield 75%;Mp=126-128℃;1H NMR(300 MHz,DMSO)δ10.44(s,1H,quinolin,-CONH-),7.29(t,J=7.8 Hz,1H,quinolin-H7),6.72(d,J=7.9 Hz,1H,quinolin-H8),6.61(d,J=7.8 Hz,1H,quinolin-H6),4.16(m,4H,-CH2CH2-),2.85-3.41(m,11H),2.28-2.39(m,6H),1.31(d,J=7.1 Hz,3H,-CH3),0.93(t,J=6.8 Hz,3H,-CH3);LC-MS(ESI):m/z 394[M+H]+
N,N-dibenzyl-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)amino]ethyl ester hydrochloride(9b)
Yield 78%;Mp=149-151℃;1H NMR(300 MHz,DMSO)δ10.29(s,1H,quinolin,-CONH-),7.15-7.39(m,10H,Ar-H),7.09(t,J=7.7 Hz,1H,quinolin-H7),6.68(d,J=7.9 Hz,1H,quinolin-H8),6.59(d,J=7.8 Hz,1H,quinolin-H6),4.08(m,4H,-CH2CH2-),3.88(s,4H,Ar-CH2-),3.46(q,J=7.1 Hz,1H,CH),2.95(q,J=6.7 Hz,2H,-CH2-),2.87(t,J=7.2 Hz,2H,quinolin-H4),2.30(t,J=7.3 Hz,2H,quinolin-H3),1.33(d,J=7.2 Hz,3H,-CH3),0.88(t,J=6.8Hz,3H,-CH3);LC-MS(ESI):m/z 486[M+H]+
N-(2-pyridinylcarbonyl)-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)am ino]ethyl ester hydrochloride(11a)
Yield 55%;Mp>300℃;1H NMR(300 MHz,DMSO)δ10.33(s,1H,quinolin,-CONH-),8.65(d,J=6.92 Hz,1H,-CONH-),8.48-8.61(m,2H,pyridine-H3,H6),8.05-8.21(m,2H,pyridine-H4,H5),7.19(t,J=7.9 Hz,1H,quinolin-H7),6.84(d,J=7.9 Hz,1H,quinolin-H8),6.62(d,J=7.9 Hz,1H,quinolin-H6).4.26-4.31(m,1H,CH),3.82-4.01(m,4H,-CH2CH2-),3.19(q,J=6.8 Hz,2H,-CH2-),2.90(t,J=7.3 Hz,2H,quinolin-H4),2.28(t,J=7.3 Hz,2H,quinolin-H3),1.24(d,J=7.1 Hz,3H,-CH3),0.89(t,J=6.8 Hz,3H,-CH3);LC-MS(ESI):m/z411[M+H]+
N-(2-furanylcarbonyl)-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)amin o]ethyl ester hydrochloride(11b)
Yield 87%;Mp>300℃;1H NMR(300 MHz,DMSO)δ10.12(s,1H,quinolin,-CONH-),8.96(d,J=6.9 Hz,1H,-CONH-),7.81(d,J=3.5 Hz,1H,Furan-H5),7.64(d,J=4.9 Hz,1H,Furan-H3),7.10(t,J=3.6Hz,1H,Furan-H4),7.01(t,J=7.9Hz,1H,quinolin-H7),6.61(d,J=7.9Hz,1H,quinolin-H8),6.56(d,J=7.8Hz,1H,quinolin-H6),4.28-4.35(m,1H,CH),3.96-4.09(m,4H,-CH2CH2-),2.98(q,J=6.7Hz,2H,-CH2-),2.89(t,J=7.3Hz,2H,quinolin-H4),2.23(t,J=7.3Hz,2H,quinolin-H3),1.31(d,J=7.2Hz,3H,-CH3),0.88(t,J=6.8Hz,3H,-CH3);LC-MS(ESI):m/z 400[M+H]+
N-(2-thienylcarbonyl)-L-alanine-2-[N-ethyl-N-(2-oxo-1,2,3,4-tetrahydroquinolin-5-yl)amin o]ethyl ester hydrochloride(11c)
Yield 85%;Mp>300℃;1H NMR(300MHz,DMSO)δ10.03(s,1H,quinolin,-CONH-),8.88(d,J=6.9Hz,1H,-CONH-),7.90(d,J=3.5Hz,1H,Thiophene-H3),7.77(d,J=4.9Hz,1H,Thiophene-H5),7.15(t,J=3.6Hz,1H,Thiophene-H4),7.06(t,J=7.9Hz,1H,quinolin-H7),6.79(d,J=7.9Hz,1H,quinolin-H8),6.61(d,J=7.8Hz,1H,quinolin-H6),4.26-4.37(m,1H,CH),3.88-4.01(m,4H,-CH2CH2-),2.92(q,J=6.7Hz,2H,-CH2-),2.78(t,J=7.3Hz,2H,quinolin-H4),2.29(t,J=7.3Hz,2H,quinolin-H3),1.34(d,J=7.2Hz,3H,-CH3),0.85(t,J=6.8Hz,3H,-CH3);LC-MS(ESI):m/z 416[M+H]+
實施例10:抗微生物活性實驗
將本發(fā)明所合成的新化合物以及對照藥物用無菌水溶解,配制成最高濃度藥液(512μg/ml),再用無菌微孔濾膜過濾,并依次按倍半稀釋法稀釋,得到濃度依次為512、256、128、64、32、16、8、4、2、1、0.5μg/mL的測試和對照樣液。采用蛋白胨(1%)、氯化鈉(0.5%)和牛肉膏(0.3%)的水溶液作為細菌液體培養(yǎng)基,蛋白胨(2%)和葡萄糖(2%)的水溶液作為真菌液體培養(yǎng)基。取菌液100μL于96孔板中,依次加入各濃度藥液,細菌用鏈霉素作陽性對照,真菌用氟康唑和多抗霉素B作陽性對照,無菌水作空白對照,測試用菌液作菌對照。每個濃度藥液平行測試兩次。所有實驗用器材都需滅菌處理,所有操作都在超凈工作臺中完成。細菌在37℃恒溫培養(yǎng)箱中培養(yǎng)18h,真菌在25℃恒溫培養(yǎng)箱中培養(yǎng)18h??刮⑸锘钚詳?shù)據(jù)見表1和表2:
表1抗細菌活性
表2抗真菌活性
上述實驗對照藥物鏈霉素屬抗生素藥物,是公認的抗微生物活性很強的抗生素,但它目前已出現(xiàn)微生物耐藥現(xiàn)象。氟康唑是目前臨床應(yīng)用的一線抗真菌藥物。上述活性數(shù)據(jù)結(jié)果表明,本發(fā)明所合成的新化合物大多數(shù)具有較明顯的抑菌活性,其中對細菌的抑制作用比對真菌的抑制作用更好。化合物7a-7d,7i和7m展現(xiàn)出較為優(yōu)秀的抗細菌活性,除MRSA外,對所有測試細菌的MIC值都在16-128μg/mL之間。特別是化合物7a,其抗B.proteus和P.aeruginosa的MIC值和鏈霉素的相同,分別為32μg/mL和16μg/mL。
對于本領(lǐng)域技術(shù)人員而言,顯然本發(fā)明不限于上述示范性實施例的細節(jié),而且在不背離本發(fā)明的精神或基本特征的情況下,能夠以其他的具體形式實現(xiàn)本發(fā)明。因此,無論從哪一點來看,均應(yīng)將實施例看作是示范性的,而且是非限制性的,本發(fā)明的范圍由所附權(quán)利要求而不是上述說明限定,因此旨在將落在權(quán)利要求的等同要件的含義和范圍內(nèi)的所有變化囊括在本發(fā)明內(nèi)。