CN1531540A - 杂环化合物和以其为有效成分的脑机能改善剂 - Google Patents
杂环化合物和以其为有效成分的脑机能改善剂 Download PDFInfo
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- CN1531540A CN1531540A CNA028076257A CN02807625A CN1531540A CN 1531540 A CN1531540 A CN 1531540A CN A028076257 A CNA028076257 A CN A028076257A CN 02807625 A CN02807625 A CN 02807625A CN 1531540 A CN1531540 A CN 1531540A
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- Prior art keywords
- compound
- spiro
- imidazo
- pyridin
- thiazol
- Prior art date
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- 125000000555 isopropenyl group Chemical group [H]\C([H])=C(\*)C([H])([H])[H] 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- ZLVXBBHTMQJRSX-VMGNSXQWSA-N jdtic Chemical compound C1([C@]2(C)CCN(C[C@@H]2C)C[C@H](C(C)C)NC(=O)[C@@H]2NCC3=CC(O)=CC=C3C2)=CC=CC(O)=C1 ZLVXBBHTMQJRSX-VMGNSXQWSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000008101 lactose Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- VQSRKMNBWMHJKY-YTEVENLXSA-N n-[3-[(4ar,7as)-2-amino-6-(5-fluoropyrimidin-2-yl)-4,4a,5,7-tetrahydropyrrolo[3,4-d][1,3]thiazin-7a-yl]-4-fluorophenyl]-5-methoxypyrazine-2-carboxamide Chemical compound C1=NC(OC)=CN=C1C(=O)NC1=CC=C(F)C([C@@]23[C@@H](CN(C2)C=2N=CC(F)=CN=2)CSC(N)=N3)=C1 VQSRKMNBWMHJKY-YTEVENLXSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001298 n-hexoxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 210000002569 neuron Anatomy 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000002664 nootropic agent Substances 0.000 description 1
- 238000007911 parenteral administration Methods 0.000 description 1
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 1
- 235000020030 perry Nutrition 0.000 description 1
- 239000000546 pharmaceutical excipient Substances 0.000 description 1
- 230000000144 pharmacologic effect Effects 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- LVTJOONKWUXEFR-FZRMHRINSA-N protoneodioscin Natural products O(C[C@@H](CC[C@]1(O)[C@H](C)[C@@H]2[C@]3(C)[C@H]([C@H]4[C@@H]([C@]5(C)C(=CC4)C[C@@H](O[C@@H]4[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@@H](O)[C@H](O[C@H]6[C@@H](O)[C@@H](O)[C@@H](O)[C@H](C)O6)[C@H](CO)O4)CC5)CC3)C[C@@H]2O1)C)[C@H]1[C@H](O)[C@H](O)[C@H](O)[C@@H](CO)O1 LVTJOONKWUXEFR-FZRMHRINSA-N 0.000 description 1
- VTGOHKSTWXHQJK-UHFFFAOYSA-N pyrimidin-2-ol Chemical compound OC1=NC=CC=N1 VTGOHKSTWXHQJK-UHFFFAOYSA-N 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 150000003839 salts Chemical group 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000013222 sprague-dawley male rat Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 239000000829 suppository Substances 0.000 description 1
- 239000000375 suspending agent Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 239000003826 tablet Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229940124597 therapeutic agent Drugs 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
- C07D471/04—Ortho-condensed systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
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- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
- C07D487/04—Ortho-condensed systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D513/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00
- C07D513/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00 in which the condensed system contains two hetero rings
- C07D513/04—Ortho-condensed systems
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- Organic Chemistry (AREA)
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- Engineering & Computer Science (AREA)
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- Veterinary Medicine (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Plural Heterocyclic Compounds (AREA)
- Pyridine Compounds (AREA)
Abstract
由通式(I)表示的杂环化合物,其中骨架(II)表示(III)或(IV)等的结构,R1表示氢原子、C1-C6烷基或苄氧基,R2表示甲基或无取代基,R3表示氢原子、C1-C6烷基、C2-C6链烯基、C3-C8环烷基或-CH2R5[R5为苯基(可被C1-C6烷基、卤原子、氰基取代)或噻吩基],R4表示C1-C6烷基、C2-C6链烯基、C3-C8环烷基或-CH2R6[R6为苯基(可被C1-C6烷基、卤原子、氰基取代)、萘基或噻吩基],或者R3和R4可以相互结合。
Description
技术领域
本发明涉及通式(I)所示杂环化合物和以该化合物为有效成分的脑机能改善剂,
[其中,
表示
R1表示氢原子、C1-C6烷基或苄氧基,R2表示甲基或无取代基,R3表示氢原子、C1-C6烷基、C2-C6链烯基、C3-C8环烷基或-CH2R5[R5为苯基(可被C1-C6烷基、卤原子、氰基取代)或噻吩基],R4表示C1-C6烷基、C2-C6链烯基、C3-C8环烷基或-CH2R6[R6为苯基(可被C1-C6烷基、卤原子、氰基取代)、萘基或噻吩基],或者R3和R4结合形成
(R7为氢原子、卤原子、C1-C6烷氧基、氰基、三氟甲基)、
环戊烯或环戊烷。但是,当
时,R3为氢原子,或者R3和R4结合形成
(R8为卤原子、C1-C6烷氧基、氰基、三氟甲基)、
环戊烯或环戊烷;此外,只有当
为
时,R2作为取代基存在,可以为甲基]。
更具体地说,涉及可用作与老年性痴呆、早老性痴呆等中的记忆缺陷治疗、记忆获得·保持障碍治疗等相关的脑机能改善剂的杂环化合物。
背景技术
近年来,随着平均寿命的增加,伴随有记忆缺陷的老年性痴呆等疾病无论是在医学方面还是在社会方面都成为大问题。
痴呆是这样一种状态:曾经获得的脑机能持续发生缺陷,引起记忆、判断、思考方面的障碍,在进行日常的社会生活时出现问题。作为老年性痴呆的原因疾病,早老性痴呆和脑血管性痴呆以及两者的混合型占总体的80-90%,其核心症状是记忆缺陷。已知对于早老性痴呆,大脑皮质中的乙酰胆碱合成酶即胆碱乙酰基转移酶(ChAT)的活性与同年龄的正常对照组相比较低[Bowen等,Brain,99,459(1976)]、大脑皮质胆碱能神经(cholinergic nerve)的起始核Meynert的基底核的神经细胞显著脱落[Whitehouse等,Science,215,1237-1239(1982)]。此外,已知由精神测试评分(mental test score)测定的认知机能与大脑皮质ChAT活性降低有关[Perry等,Br.Med.J.25,1457-1459(1978)]、药理学上的蕈毒碱受体拮抗剂东茛菪碱在临床上引发健忘症[Drachman,Neurology,27,783-790(1977)]等,以上述报告为背景,提出了记忆与胆碱能神经密切相关的胆碱能假设[Bartus等,Science,217,408-417(1982)],目前,在治疗老年性痴呆的药物开发方面,正在进行以胆碱能假设为基础的探讨。特别是由抗胆碱能药物(例如东茛菪碱)引起的学习和记忆缺陷实验动物模型被广泛用于探讨对通常因各种原因(例如包括早老性痴呆的老年性痴呆)引发的学习和记忆缺陷有效的药物。
迫切需要开发出对老年性痴呆有效的治疗药物,至今为止,已报道了利诺吡啶、他克林、安理申等抗痴呆药,其中有一些已成为市售药物。
但是,在至今为止所开发出的已经上市的抗痴呆药中,还没有发现满足痴呆症状的改善和治疗要求的药物,需要开发出更有效的抗痴呆药。
发明的公开
本发明人为获得对经由中枢神经系统,特别是胆碱能神经系统的认知机能障碍有改善效果的化合物,进行了深入研究,结果发现上述通式(I)所示杂环化合物对于大鼠的东莨菪碱引发的健忘具有显著的抗健忘效果,从而完成了本发明。
本发明的化合物由上述通式(I)表示,下面说明式中各符号的定义中所用语句的含意和例子。
“C1-C6”若无限定则是指具有1-6个碳原子的基团。
“C2-C6”若无限定则是指具有2-6个碳原子的基团。
“C3-C8”若无限定则是指具有3-8个碳原子的基团。
“C1-C6烷基”的例子有甲基、乙基、正丙基、异丙基、正丁基、叔丁基、仲丁基、正戊基、正己基等直链或支链烷基。
“C3-C8环烷基”的例子有环丙基、环丁基、环戊基、环己基、环庚基、环辛基。
“C2-C6链烯基”的例子有乙烯基、丙烯基、异丙烯基、丁烯基、戊烯基、己烯基等直链或支链的链烯基。
“C1-C6烷氧基”的例子有甲氧基、乙氧基、正丙氧基、异丙氧基、正丁氧基、叔丁氧基、仲丁氧基、正戊氧基、正己氧基等直链或支链烷氧基。
“卤原子”的例子有氟、氯、溴、碘。
本发明的化合物有例如下列化合物,但本发明并不限于这些化合物。
1.螺[咪唑并[2,1-b]噻唑-6(5H)-酮-5,2’-苯并[f]茚满]
2.螺[咪唑并[1,2-b]噻唑-6(5H)-酮-5,2’-茚满]
3.螺[2-甲基咪唑并[1,2-b]噻唑-6(5H)-酮-5,2’-苯并[f]茚满]
4.5,5-二(4-氟苄基)咪唑并[2,1-b]噻唑-6(5H)-酮
5.5,5-二苄基咪唑并[2,1-b]噻唑-6(5H)-酮
6.5,5-二(4-甲基苄基)咪唑并[2,1-b]噻唑-6(5H)-酮
7.5,5-二(4-氰基苄基)咪唑并[2,1-b]噻唑-6(5H)-酮
8.5,5-二苄基-2-甲基咪唑并[2,1-b]噻唑-6(5H)-酮
9.5,5-二(4-氟苄基)-2-甲基咪唑并[2,1-b]噻唑-6(5H)-酮
10.5,5-二环己基-2-甲基咪唑并[2,1-b]噻唑-6(5H)-酮
11.5,5-二(4-氰基苄基)-2-甲基咪唑并[2,1-b]噻唑-6(5H)-酮
12.5,5-二(2-丁烯基)咪唑并[2,1-b]噻唑-6(5H)-酮
13.5,5-二丁基咪唑并[2,1-b]噻唑-6(5H)-酮
14.5,5-二环己基咪唑并[2,1-b]噻唑-6(5H)-酮
15.5,5-二(2-噻吩基甲基)咪唑并[2,1-b]噻唑-6(5H)-酮
16.螺[2,3-二氢咪唑并[2,1-b]噻唑-6(5H)-酮-5,2’-苯并[f]茚满]
17.5,5-二丁基-2,3-二氢咪唑并[2,1-b]噻唑-6(5H)-酮
18.5,5-二(2-丁烯基)-2,3-二氢咪唑并[2,1-b]噻唑-6(5H)-酮
19.5,5-二(4-甲基苄基)-2,3-二氢咪唑并[2,1-b]噻唑-6(5H)-酮
20.5,5-二(2-噻吩基甲基)-2,3-二氢咪唑并[2,1-b]噻唑-6(5H)-酮
21.5,5-二(4-氟苄基)-2,3-二氢咪唑并[2,1-b]噻唑-6(5H)-酮
22.5,5-二苄基-2,3-二氢咪唑并[2,1-b]噻唑-6(5H)-酮
23.螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-苯并[f]茚满]
24.2-羟基-3-(2-萘基甲基)-咪唑并[1,2-a]吡啶
25.3-苄基咪唑并[1,2-a]吡啶-2(3H)-酮
26.螺[5,6,7,8-四氢咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-苯并[f]茚满]
27.3,3-二环己基-5,6,7,8-四氢咪唑并[1,2-a]吡啶-2(3H)-酮
28.3,3-二(2-噻吩基甲基)-5,6,7,8-四氢咪唑并[1,2-a]吡啶-2(3H)-酮
29.3,3-二丁基-5,6,7,8-四氢咪唑并[1,2-a]吡啶-2(3H)-酮
30.3,3-二丙基-5,6,7,8-四氢咪唑并[1,2-a]吡啶-2(3H)-酮
31.螺[咪唑并[1,2-a]嘧啶-2(3H)-酮-3,2’-苯并[f]茚满]
32.3,3-二(2-丁烯基)咪唑并[1,2-a]嘧啶-2(3H)-酮
33.3,3-二(2-噻吩基甲基)咪唑并[1,2-a]嘧啶-2(3H)-酮
34.3,3-二(4-氟苄基)咪唑并[1,2-a]嘧啶-2(3H)-酮
35.3,3-二环己基咪唑并[1,2-a]嘧啶-2(3H)-酮
36.3,3-二(4-氰基苄基)咪唑并[1,2-a]嘧啶-2(3H)-酮
37.3,3-二(4-甲基苄基)咪唑并[1,2-a]嘧啶-2(3H)-酮
38.4,4-二苄基-1-甲基-5-氧-4,5-二氢咪唑
39.螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-(4’-氟代茚满)]
40.螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-(5’-甲氧基茚满)]
41.螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-(5’-碘代茚满)]
42.螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-(4’-氰基茚满)]
43.螺[咪唑并[2,1-a]异喹啉-2(3H)-酮-3,2’-茚满]
44.螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-((1,2,5-噻二唑并)[4,5-c]茚满)]
45.螺[咪唑并[2,1-a]异喹啉-2(3H)-酮-3,2’-((1,2,5-噻二唑并)[4,5-c]茚满)]
46.螺[咪唑并[1,2-a]嘧啶-2(3H)-酮-3,1’-(3’-环戊烯)]
47.螺[咪唑并[1,2-a]嘧啶-2(3H)-酮-3,2’-茚满]
48.螺[咪唑并[1,2-a]嘧啶-2(3H)-酮-3,2’-((1,2,5-噻二唑并)[4,5-c]茚满)]
49.螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-(5’-三氟甲基茚满)]
50.螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-苯并[e]茚满]
51.螺[咪唑并[2,1-a]异喹啉-2(3H)-酮-3,1’-(3’-环戊烯)]
52.螺[8-苄氧基咪唑并[1,2-a]吡啶-2(3H)-酮-3,1’-(3’-环戊烯)]
53.螺[7,8,9,10-四氢咪唑并[2,1-a]异喹啉-2(3H)-酮-3,1’-环戊烷]
54.螺[咪唑并[2,1-a]异喹啉-2(3H)-酮-3,1’-环戊烷]
55.螺[5,6,7,8-四氢咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-茚满]
当本发明化合物(I)的结构中有不对称碳原子时,存在由不对称碳原子导致的异构体和它们的混合物(外消旋物),这些也都包括在本发明的化合物中。
此外,当R3为氢原子时,本发明的化合物(I)可以以如下式所示的互变异构体的形式存在,因而上述通式的定义包括所有这些互变异构体。
(式中,表示其基本结构的
R1、R2、R4全都与上述定义相同)
[制备步骤]
通式(I)所示本发明的化合物是新型化合物,其制备可以使用筧等人的方法[Bulletin Chemical Society Japan,55卷11号,3590-3597(1982)]。即,其中
为
以外的结构的本发明化合物(I)的制备,如下述反应式所示,以通式(II)的季盐为起始原料,在1,8-二氮杂双环[5,4,0]-7-十一碳烯(DBU)、乙醇钠、氢氧化钠等碱存在下,使其与通式(III)或(III’)的卤化物反应而制得。
[式中,R1、R3、R4与上述定义相同,
表示
的基团。
R9为氢原子、C1-C6烷基、C2-C6链烯基、C3-C8环烷基或-CH2R6(R6与上述定义相同),R为C1-C6烷基、C3-C8环烷基或-CH2R6(R6与上述定义相同),R’为
(式中R7与上述定义相同),X表示氯原子或溴原子]。
该反应中,相对于1摩尔化合物(II),当R9为氢原子时,用2.0-2.2摩尔化合物(III)或1.0-1.2摩尔化合物(III’)与2-4摩尔碱,或者当R9为氢原子以外的基团时,用1.0-1.2摩尔化合物(III)与1-2摩尔碱,使其在溶剂中、0℃-50℃下反应2-50小时。
溶剂可以使用二甲基甲酰胺(DMF)、四氢呋喃(THF)、乙腈、甲醇、乙醇等。
其中R3和R4形成环戊烯的本发明化合物可以以上述制法所得化合物中R3和R4都为烯丙基的化合物为原料,在格鲁布斯试剂存在下,通过环化反应而制得。
此时,相对于1摩尔作为原料的上述二烯丙基化合物,用0.05-0.5摩尔格鲁布斯试剂,在溶剂中,使其从室温至150℃反应5-50小时。溶剂可以使用二噁烷、甲苯、氯仿、二氯甲烷、THF等。
或者R3与R4形成环戊烷的本发明化合物(I),可以以上述制法所得本发明化合物中
或者R3与R4形成环戊烯的本发明化合物为原料,以披钯碳为催化剂,在氢气气氛下,以常规方法进行催化还原而制得。
此时,催化剂的用量为起始原料重量的1/10至等量,优选1/5的量。反应溶剂用乙醇、甲醇、氯仿等,优选乙醇。反应在0℃-50℃的范围内进行,反应温度优选室温。
前者的反应用Matsumoto等人的方法[SYNTHESIS,249-250(1977)]进行。后者的反应,相对于1摩尔异氰基乙酰胺,用2-3摩尔化合物(III)或1.0-1.2摩尔化合物(III’)进行。
反应溶剂用THF、二噁烷、DMF等,优选THF。
所用碱优选NaH,其用量与化合物(III)或化合物(III’)等摩尔。
反应在室温至80℃的温度范围内进行,反应温度优选50℃。
如此制得的本发明化合物可以通过常规方法,例如萃取、浓缩、中和、过滤、重结晶、柱层析等进行分离提纯。
[作用]
下面,对通式(I)所示本发明化合物的药理效果进行说明。试验例1)中的受试化合物编号与后述实施例的化合物编号对应。另外,用下述抗痴呆作用物质作为比较化合物。
化合物A:利诺吡啶[3,3-二(4-吡啶基甲基)-1-苯基吲哚满-2-酮]
化合物B:他克林[9-氨基-1,2,3,4-四氢吖啶]
化合物C:安理申[(R,S)-1-苄基-4-(5,6-二甲氧基-1-二氢茚酮-2-基)-甲基哌啶]
试验例1)
对由东茛菪碱诱发的健忘的效果(经口给予)
用Sprague Dawley系雄性大鼠(8周龄,260±2g)通过被动回避学习法进行研究。被动回避学习实验装置由明室和暗室构成,两者由具有出入口的壁隔开。底面为不锈钢网格,只有暗室内的网格上装设有通电用的电线。
实验第一天和第二天,为了使其习惯被动回避学习装置,将大鼠一只一只放在明室内,使其在装置内自由行动3分钟,进行预备训练。实验第三天,将大鼠放在明室内,当大鼠全部进步暗室后,关上门,对底面网格通电,对其进行电击(100V,0.4mA,连续0.8秒)。在进行电击前20分钟,腹腔内给予引发健忘的氢溴酸东茛菪碱(2mg/kg)。24小时后进行电击的记忆保持测试。被动回避行为的保持通过大鼠被放在明室内到进入暗室为止的时间(反应潜伏期)来测定。测定时间超过300秒时的反应潜伏期记录为300秒。将受试化合物悬浮于1%羧甲基纤维素水溶液中,在测试前60分钟经口给予0.01mg/kg和1mg/kg。
通过下式:
以百分比值:抑制率(%)计算出该保护效果。上式中,T表示反应潜伏期,SC表示氢溴酸东茛菪碱。实验结果如下表所示。对于受试化合物,在两个给予量中,记录了显示出更高抑制率的数据。
表1对大鼠的由东茛菪碱引发的健忘的效果
受试化合物 给药量(mg/kg,p.o.) 抑制率(%)
化合物1 1 56.1*
化合物2 0.01 86.9*
化合物3 0.01 60.3*
化合物4 0.01 49.8*
化合物5 0.01 49.6*
化合物6 0.01 66.6*
化合物8 0.01 58.9**
化合物9 0.01 86.6**
化合物10 0.01 40.8*
化合物11 0.01 80.4**
化合物12 0.01 53.5*
化合物13 1 49.6*
化合物14 0.01 53.6*
化合物15 1 61.5*
化合物16 0.01 73.3*
化合物17 0.01 54.4*
化合物18 0.01 90.3**
化合物19 1 83.4**
化合物20 1 72.4**
化合物21 1 52.4*
化合物22 0.01 76.5**
化合物23 0.01 88.2**
化合物24 0.01 97.1**
化合物25 1 78.3*
化合物26 1 74.3**
化合物27 1 64.9**
化合物28 0.01 88.0**
化合物29 1 87.7**
化合物30 1 89.5**
化合物31 0.01 56.7*
化合物32 0.01 61.4*
化合物33 0.01 66.1**
化合物A 0.01 8.8
1 20.9
化合物B 0.01 24.1
1 54.9**
化合物C 0.01 12.5
1 24.7
**P<0.01、*P<0.05(通过与东茛菪碱对照组比较的Mann-Whitney U试验)
上述试验例1)的结果显示,本发明化合物与公知的比较化合物相比,具有明显优良的抗健忘作用。
本发明化合物(I)对中枢神经的作用和对末梢神经的作用分离得极好,在显示出对大鼠的抗健忘作用的用量(0.001-10mg/kg)下,见不到痉挛、流涎、腹泻等末梢神经作用,通过经口给予显示出更显著的效果,因而可用作包括人在内的哺乳动物的脑机能改善剂。
本发明化合物的有效对象疾病名有例如老年性痴呆、早老性痴呆、帕金森氏病和其它中枢神经疾病,可用于这些疾病的预防或治疗。
下面,对本发明化合物适用于哺乳动物特别是人时的给予方法、剂型、给予量进行说明。
本发明化合物可以经口给予或者非经口给予,经口给予的剂型可以使用片剂、包衣片剂、散剂、颗粒剂、胶囊剂、微囊剂、糖浆剂等,非经口给予的剂型可以使用栓剂等。这些剂型的配制可以用药学上可接受的赋形剂、粘合剂、润滑剂、崩解剂、悬浮剂、乳化剂、防腐剂、稳定剂和分散剂,例如乳糖、蔗糖、淀粉、糊精、结晶纤维素、陶土、碳酸钙、滑石、硬脂酸镁、蒸馏水或生理盐水进行。
给药量随患者的症状、年龄、体重等变化,对于成人,日剂量为0.1-50mg,可以分1-3次给药。
实施发明的最佳方式
下面给出本发明的实施例,进行更具体的说明,但本发明并不限于这些实施例。
实施例1)
5,5-二(4-氟苄基)咪唑并[2,1-b]噻唑-6(5H)-酮(化合物1)
在冰冷却条件下,向由210mg(9.0mmol)金属钠配制而成的乙醇钠的乙醇溶液(10ml)中加入300mg(1.4mmol)溴化2-氨基-3-乙氧基羰基甲基噻唑鎓,然后加入1.15ml(9.0mmol)对氟代苄基溴,在室温下搅拌1小时。减压馏去溶剂后,向残余物中加入水,用乙酸乙酯萃取数次,用饱和食盐水洗涤,然后用无水硫酸镁干燥。减压馏去溶剂,将残余物通过硅胶柱层析(乙酸乙酯∶甲醇=10∶1)分离,得到852mg(80.0%)标题化合物的结晶。用乙醇重结晶,得到熔点>300℃的白色结晶。
NMR(CD3OD-CDCl3(1∶1))δ:3.23(2H,d,J=14Hz),3.43(2H,d,J=14Hz),6.66(1H,d,J=4Hz),6.8-6.9(4H,m),6.9-7.1(4H,m),7.28(1H,d,J=4Hz)
MS m/z:356(M+)
与实施例1)一样操作,由对应的起始原料制备下述化合物。
5,5-二苄基咪唑并[2,1-b]噻唑-6(5H)-酮(化合物2)
熔点>300℃
NMR(DMSO-d6)δ:3.69(2H,d,J=15Hz),3.74(2H,d,J=15Hz),7.27(1H,d,J=4Hz),7.3-7.4(4H,m),7.5-7.6(6H,m),8.44(1H,d,J=4Hz)
MS m/z:320(M+)
3,3-二苄基咪唑并[1,2-a]嘧啶-2(3H)-酮(化合物3)
熔点>300℃
NMR(DMSO-d6)δ:3.42(4H,dd,J=14Hz,J=16Hz),6.9-7.0(5H,m),7.1-7.2(6H,m),8.46(1H,dd,J=3Hz,J=5Hz),9.07(1H,dd,J=2Hz,J=6Hz)
MS m/z:315(M+)
5,5-二(4-甲基苄基)咪唑并[2,1-b]噻唑-6(5H)-酮(化合物4)
熔点>300℃
NMR(DMSO-d6)δ:2.20(6H,s),3.24(2H,d,J=14Hz),3.36(2H,d,J=14Hz),6.84(4H,d,J=8Hz),6.89(1H,d,J=4Hz),6.97(4H,d,J=8Hz),8.03(4H,d,J=4Hz)
MS m/z:348(M+)
5,5-二(4-氰基苄基)咪唑并[2,1-b]噻唑-6(5H)-酮(化合物5)
熔点:264-267℃
NMR(CDCl3)δ:3.23(2H,d,J=14Hz),3.56(2H,d,J=14Hz),6.54(1H,d,J=6Hz),7.02(1H,d,J=6Hz),7.15(4H,d,J=9Hz),7.51(4H,d,J=9Hz)
MS m/z:370(M+)
5,5-二苄基-2-甲基咪唑并[2,1-b]噻唑-6(5H)-酮(化合物6)
熔点>300℃
NMR(CD3OD-CDCl3(1∶1))δ:2.34(3H,d,J=1Hz),3.28(2H,d,J=13Hz),3.43(2H,d,J=13Hz),7.0-7.1(4H,m),7.1-7.3(7H,m)
MS m/z:334(M+)
5,5-二(2-噻吩基甲基)咪唑并[2,1-b]噻唑-6(5H)-酮(化合物7)
熔点:286℃(分解)
NMR(CDCl3)δ:3.43(2H,d,J=15Hz),3.60(2H,d,J=15Hz),6.49(1H,d,J=5Hz),6.7-7.0(5H,m),7.12(2H,dd,J=1Hz,J=6Hz)
MS m/z:332(M+)
3,3-二(2-噻吩基甲基)咪唑并[1,2-a]嘧啶-2(3H)-酮(化合物8)
熔点:192℃(分解)
NMR(CD3OD-CDCl3(1∶1))δ:3.54(2H,d,J=15Hz),3.76(2H,d,J=15Hz),6.7-6.9(5H,m),7.11(2H,dd,J=1Hz,J=5Hz),8.23(1H,dd,J=2Hz,J=6Hz),8.62(1H,dd,J=2Hz,J=4Hz)
MS m/z:327(M+)
5,5-二苄基-2,3-二氢咪唑并[2,1-b]噻唑-6(5H)-酮(化合物9)
熔点:233-236℃
NMR(CDCl3)δ:3.03(2H,d,J=14Hz),3.23(2H,t,J=7Hz),3.41(2H,d,J=14Hz),3.63(2H,t,J=7Hz),7.1-7.2(4H,m),7.2-7.3(6H,m)
MS m/z:322(M+)
2-羟基-3-(2-萘基甲基)咪唑并[1,2-a]吡啶(化合物10)
熔点:205℃(分解)
NMR(CD3OD-CDCl3(1∶1))δ:3.41(1H,d,J=15Hz),3.76(1H,d,J=15Hz),6.72(1H,t,J=7Hz),7.02(1H,d,J=9Hz),7.29(1H,d,J=9Hz),7.4-7.5(2H,m),7.58(2H,brs),7.6-7.9(4H,m)
MS m/z:274(M+)
螺[咪唑并[1,2-a]嘧啶-2(3H)-酮-3,2’-苯并[f]茚满](化合物11)
熔点:214℃(分解)
NMR(CD3OD-CDCl3(1∶1))δ:3.33(2H,d,J=16Hz),4.02(2H,d,J=16Hz),6.58(1H,t,J=7Hz),7.16(1H,d,J=7Hz),7.24(1H,d,J=9Hz),7.5-7.6(2H,m),7.74(1H,t,J=8Hz),7.8-7.9(4H,m)
MS m/z:286(M+)
3-苄基咪唑并[1,2-a]吡啶-2(3H)-酮(化合物14)
熔点:182℃(分解)
NMR(CDCl3)δ:3.09(1H,dd,J=8Hz,J=15Hz),3.64(1H,dd,J=4Hz,J=15Hz),4.58(1H,dd,J=4Hz,J=8Hz),6.47(1H,t,J=7Hz),7.0-7.1(2H,m),7.1-7.2(2H,m),7.3-7.4(3H,m),7.54(1H,t,J=7Hz)
MS m/z:224(M+)
3,3-二(2-丁烯基)咪唑并[1,2-a]嘧啶-2(3H)-酮(化合物17)
熔点:149.5℃(分解)
NMR(CDCl3)δ:1.55(6H,d,J=6Hz),2.51(2H,dd,J=8Hz,J=15Hz),2.76(2H,dd,J=8Hz,J=15Hz),5.1-5.3(2H,m),5.4-5.7(2H,m),6.69(1H,dd,J=5Hz,J=6Hz),7.75(1H,dd,J=2Hz,J=6Hz),8.7(1H,dd,J=2Hz,J=5Hz)
MS m/z:243(M+)
螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-(4’-氟代茚满)](化合物18)
熔点:148.0℃(分解)
NMR(CDCl3)δ:3.24(2H,dd,J=18Hz,J=22Hz),3.88(2H,t,J=18Hz),6.55(1H,t,J=7Hz),7.01(1H,t,J=9Hz),7.10(1H,d,J=7Hz),7.2-7.3(3H,m),7.63(1H,t,J=8Hz)
MS m/z:254(M+)
螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-(5’-甲氧基茚满)](化合物19)
熔点:150.0-152.0℃
NMR(CDCl3)δ:3.08(2H,dd,J=6Hz,J=17Hz),3.8-4.0(5H,m),6.49(1H,t,J=7Hz),6.8-6.9(2H,m),7.1-7.3(3H,m),7.60(1H,t,J=7Hz)
MS m/z:266(M+)
螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-(5’-碘代茚满)](化合物20)
熔点:167-171℃
NMR(CDCl3)δ:3.14(2H,dd,J=6Hz,J=17Hz),3.82(2H,dd,J=17Hz,J=18Hz),6.57(1H,t,J=7Hz),7.08(1H,d,J=8Hz),7.1-7.3(2H,m),7.6-7.7(3H,m)
MS m/z:362(M+)
螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-(4’-氰基茚满)](化合物21)
熔点:247.7℃(分解)
NMR(CDCl3)δ:3.26(2H,dd,J=3Hz,J=18Hz),3.93(2H,dd,J=6Hz,J=18Hz),6.56(1H,t,J=7Hz),7.15(1H,d,J=7Hz),7.23(1H,d,J=9Hz),7.44(1H,d,J=8Hz),7.6-7.7(3H,m)
MS m/z:261(M+)
螺[咪唑并[2,1-a]异喹啉-2(3H)-酮-3,2’-茚满](化合物22)
熔点:201-203℃
NMR(CDCl3)δ:3.22(2H,d,J=17Hz),3.91(2H,d,J=17Hz),6.74(1H,d,J=7Hz),6.89(1H,d,J=7Hz),7.32(4H,s),7.6-7.7(2H,m),7.79(1H,t,J=7Hz),8.63(1H,d,J=8Hz)
MS m/z:286(M+)
螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-((1,2,5-噻二唑并)[4,5-c]茚满)](化合物23)
熔点:86-88℃
NMR(CDCl3-CD3OD(1∶1))δ:3.44(2H,d,J=18Hz),4.00(2H,d,J=18Hz),6.71(1H,t,J=7Hz),7.2-7.4(2H,m),7.81(1H,t,J=7Hz),7.97(2H,s)
MS m/z:294(M+)
螺[咪唑并[2,1-a]异喹啉-2(3H)-酮-3,2’-((1,2,5-噻二唑并)[4,5-c]茚满)](化合物24)
熔点:271.5℃(分解)
NMR(CDCl3)δ:3.39(2H,d,J=16Hz),4.04(2H,brd,J=16Hz),6.77(1H,d,J=7Hz),6.81(1H,d,J=7Hz),7.6-7.8(2H,m),7.82(1H,brt,J=8Hz),7.95(2H,brs),8.65(1H,d,J=8Hz)
MS m/z:344(M+)
螺[咪唑并[1,2-a]嘧啶-2(3H)-酮-3,2’-茚满](化合物25)
熔点:195.5℃(分解)
NMR(CDCl3)δ:3.17(2H,d,J=17Hz),3.92(2H,d,J=17Hz),6.53(1H,dd,J=5Hz,J=6Hz),7.44(1H,dd,J=2Hz,J=6Hz),7.32(4H,s),8.72(1H,dd,J=2Hz,J=5Hz)
MS m/z:237(M+)
螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-(5’-三氟甲基茚满)](化合物26)
熔点:176.5-179.5℃
NMR(CDCl3)δ:3.25(2H,d,J=17Hz),3.92(2H,d,J=17Hz),6.57(1H,t,J=7Hz),7.1-7.2(2H,m),7.44(1H,d,J=8Hz),8.5-8.7(3H,m)
MS m/z:304(M+)
螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-苯并[e]茚满](化合物27)
熔点:256.0℃(分解)
NMR(CDCl3)δ:3.33(1H,d,J=17Hz),3.56(1H,d,J=17Hz),4.09(2H,t,J=17Hz),6.50(1H,t,J=7Hz),7.22(1H,d,J=9Hz),7.29(1H,d,J=7Hz),7.42(1H,d,J=8Hz),7.5-7.7(4H,m),7.83(1H,d,J=8Hz),7.92(1H,d,J=6Hz)
MS m/z:286(M+)
3,3-二烯丙基咪唑并[1,2-a]吡啶-2(3H)-酮
熔点:64-66℃
NMR(CDCl3)δ:2.56(2H,dd,J=9Hz,J=14Hz),2.86(2H,dd,J=6Hz,J=14Hz),4.99(2H,dd,J=1Hz,J=7Hz),5.40(2H,d,J=1Hz),5.4-5.6(2H,m),6.67(1H,t,J=7Hz),7.17(1H,d,J=7Hz),7.52(1H,d,J=7Hz),7.59(1H,d,J=7Hz)
MS m/z:214(M+)
3,3-二(2-环己烯基)咪唑并[1,2-a]吡啶-2(3H)-酮
熔点:245-247℃
NMR(CDCl3)δ:1.4-2.0(12H,m),2.9-3.1(2H,m),5.29(1H,brd,J=10Hz),5.8-6.0(3H,m),6.62(1H,t,J=7Hz),7.17(1H,d,J=9Hz),7.5-7.7(2H,m)
MS m/z:294(M+)
3,3-二烯丙基咪唑并[1,2-a]吡啶-2(3H)-酮
熔点:64-66℃
NMR(CDCl3)δ:2.56(2H,dd,J=9Hz,J=14Hz),2.86(2H,dd,J=6Hz,J=14Hz),4.99(2H,dd,J=1Hz,J=7Hz),5.04(2H,d,J=1Hz),5.4-5.6(2H,m),6.67(1H,t,J=7Hz),7.17(1H,d,J=7Hz),7.52(1H,d,J=7Hz),7.59(1H,d,J=7Hz)
MS m/z:214(M+)
螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-茚满]
熔点:206℃(分解)
NMR(CDCl3)δ:3.16(2H,d,J=16Hz),3.89(2H,d,J=16Hz),6.49(1H,t,J=7Hz),7.1-7.2(2H,m),7.2-7.3(4H,m),7.61(1H,t,J=7Hz)
MS m/z:236(M+)
3,3-二烯丙基-8-苄氧基咪唑并[1,2-a]吡啶-2(3H)-酮
熔点:160-162℃
NMR(CDCl3)δ:2.54(2H,dd,J=8Hz,J=14Hz),2.86(2H,dd,J=6Hz,J=14Hz),4.96(2H,dd,J=1Hz,J=5Hz),5.01(2H,d,J=1Hz),5.29(2H,s),5.4-5.6(2H,m),6.53(1H,dd,J=7Hz,J=8Hz),6.94(1H,d,J=7Hz),7.16(1H,d,J=8Hz),7.3-7.5(5H,m)
MS m/z:320(M+)
3,3-二丁基咪唑并[1,2-a]吡啶-2(3H)-酮
熔点:100.5-102℃
NMR(CDCl3)δ:0.6-0.9(8H,m),1.0-1.3(6H,m),1.6-1.8(2H,m),2.0-2.2(2H,m),6.71(1H,t,J=7Hz),7.19(1H,d,J=7Hz),7.50(1H,d,J=7Hz),7.62(1H,t,J=7Hz)
MS m/z:246(M+)
3,3-二(2-环己烯基)咪唑并[1,2-a]吡啶-2(3H)-酮
熔点:249.0℃(分解)
NMR(CDCl3)δ:1.4-2.0(12H,m),2.9-3.1(2H,m),5.2-5.3(1H,m),5.8-6.0(3H,m),6.62(1H,t,J=7Hz),7.17(1H,d,J=9Hz),7.5-7.7(2H,m)
MS m/z:297(M+)
3,3-二烯丙基咪唑并[2,1-a]异喹啉-2(3h)-酮
熔点:108-110℃
NMR(CDCl3)δ:2.62(2H,dd,J=8Hz,J=14Hz),2.89(2H,dd,J=6Hz,J=14Hz),4.9-5.1(4H,m),5.4-5.6(2H,m),6.91(1H,d,J=7Hz),7.25(1H,d,J=7Hz),7.6-7.7(2H,m),7.80(1H,t,J=8Hz),8.57(1H,d,J=8Hz)
MS m/z:264(M+)
实施例2)
螺[咪唑并[2,1-a]异喹啉-2(3H)-酮-3,1’-(3’-环戊烯)](化合物28)
在氩气气氛下,向1.0g(3.8mmol)由与实施例1)相同的方法得到的3,3-二烯丙基咪唑并[2,1-a]异喹啉-2(3H)-酮的氯仿溶液(80ml)中加入80mg格鲁布斯试剂(0.24mmol),加热回流14小时。将反应混合物放冷后,减压馏去溶剂。向所得残余物中加入水,用二氯甲烷萃取数次,收集萃出层,用饱和食盐水洗涤,然后经无水硫酸镁干燥。减压馏去溶剂,将残余物通过硅胶柱层析(乙酸乙酯∶甲醇=10∶1)分离提纯,得到748mg(83.5%)为淡褐色结晶的标题化合物。
熔点:173.5℃(分解)
NMR(CDCl3)δ:2.70(2H,d,J=17Hz),3.30(2H,d,J=17Hz),5.92(2H,s),6.89(1H,d,J=7Hz),7.33(1H,d,J=7Hz),7.6-7.8(2H,m),7.79(1H,t,J=7Hz),8.60(1H,d,J=7Hz)
MS m/z:236(M+)
与实施例2)一样操作,由对应的起始原料制备下述化合物。
螺[8-苄氧基咪唑并[1,2-a]吡啶-2(3H)-酮-3,1’-(3’-环戊烯)](化合物29)
熔点:178.5-180.5℃
NMR(CDCl3)δ:2.64(2H,d,J=16Hz),3.29(2H,d,J=16Hz),5.30(2H,s),5.88(2H,s),6.49(1H,dd,J=6Hz,J=8Hz),6.94(1H,dd,J=6Hz,J=8Hz),6.94(1H,d,J=8Hz),7.2-7.5(5H,m)
MS m/z:292(M+)
实施例3)
3,3-二丙基-5,6,7,8-四氢咪唑并[1,2-a]吡啶-2(3H)-酮(化合物15)
向300mg(1.4mmol)由与实施例1)一样的方法得到的3,3-二烯丙基咪唑并[1,2-a]吡啶-2(3H)-酮的乙醇溶液(30ml)中加入100mg 10%的披钯碳,在室温、氢气气氛下催化还原1晚。滤出不溶物,从滤液中减压馏去溶剂。将残余物通过硅胶柱层析(己烷∶乙酸乙酯=10∶1)分离,得到281mg(90.3%)标题化合物的结晶。用己烷-乙酸乙酯(10∶1)进行重结晶,得到熔点为98.5-101℃的白色结晶。
NMR(CDCl3)δ:0.86(6H,t,J=7Hz),0.9-1.1(2H,m),1.1-1.2(2H,m),1.4-1.6(2H,m),1.7-2.0(6H,m),2.79(2H,t,J=6Hz),3.19(2H,t,J=6Hz)
MS m/z:222(M+)
与实施例3)一样操作,由对应的起始原料制备下述化合物。
3,3-二环己基-5,6,7,8-四氢咪唑并[1,2-a]吡啶-2(3H)-酮(化合物12)
熔点:218-220℃
NMR(CDCl3)δ:0.9-1.4(8H,m),1.5-2.0(18H,m),2.79(2H,t,J=6Hz),3.30(2H,t,J=6Hz)
MS m/z:302(M+)
3,3-二丁基-5,6,7,8-四氢咪唑并[1,2-a]吡啶-2(3H)-酮(化合物13)
熔点:35-40℃
NMR(CDCl3)δ:0.88(6H,t,J=7Hz),0.9-1.4(8H,m),1.6-2.2(8H,m),3.2-3.4(4H,m)
MS m/z:250(M+)
螺[7,8,9,10-四氢咪唑并[2,1-a]异喹啉-2(3H)-酮-3,1’-环戊烷](化合物30)
熔点:270.5℃(分解)
NMR(CDCl3)δ:1.8-2.2(10H,m),2.3-2.5(2H,m),2.6-2.8(4H,m),6.44(1H,d,J=7Hz),7.35(1H,d,J=7Hz)
MS m/z:242(M+)
螺[咪唑并[2,1-a]异喹啉-2(3H)-酮-3,1’-环戊烷](化合物31)
熔点:164.5-167.5℃
NMR(CDCl3)δ:1.8-2.3(6H,m),2.4-2.6(2H,m),6.94(1H,d,J=7Hz),7.33(1H,d,J=7Hz),7.6-7.7(2H,m),7.79(1H,t,J=6Hz),8.60(1H,d,J=8Hz)
MS m/z:238(M+)
螺[5,6,7,8-四氢咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-苯并[f]茚满](化合物32)
熔点:252.5℃(分解)
NMR(CDCl3-CD3OD(1∶1))δ:1.9-2.1(4H,m),3.0-3.2(4H,m),3.50(2H,d,J=18Hz),3.79(2H,d,J=18Hz),7.4-7.5(2H,m),7.75(2H,s),7.8-7.9(2H,m)
MS m/z:290(M+)
螺[5,6,7,8-四氢咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-茚满](化合物33)
熔点:276.5℃(分解)
NMR(CDCl3-CD3OD(1∶1))δ:1.9-2.1(4H,m),3.0-3.3(4H,m),3.45(2H,d,J=17Hz),3.66(2H,d,J=17Hz),7.30(4H,s)
MS m/z:240(M+)
实施例4)
4,4-二苄基-1-甲基-5-氧-4,5-二氢咪唑(化合物16)
将1.13g(10mmol)异氰基乙酸乙酯溶于5ml甲醇中,加入5ml甲胺的40%甲醇溶液,使其在密封管中、室温下反应2小时。从反应物中减压馏去溶剂,将残余物通过硅胶柱层析(乙酸乙酯∶己烷∶乙醇=8∶2∶1)提纯,得到860mg(88%)乙酰胺。
将530mg(13.2mmol)60%的氢化钠悬浮于10ml THF中,将590mg(6mmol)上述乙酰胺、1.4ml(12mmol)苄基溴溶于10ml THF后加入其中,在50℃加热2小时。向反应物中加入水,用100ml乙酸乙酯萃取2次,水洗后,用硫酸镁干燥。将馏去溶剂后的残余物通过硅胶柱层析(乙酸乙酯∶己烷=1∶1)提纯,得到1.22g(73%)标题化合物。
熔点:125-126℃
NMR(CDCl3):2.54(3H,s),3.11(2H,d,J=13Hz),3.19(3H,d,J=13Hz),7.08(1H,s),7.1-7.2(10H,m)
MS m/z:278(M+)
工业上的可利用性
本发明化合物对中枢神经的作用和对末梢神经的作用分离得极好,通过对大鼠给药,显示出显著的抗健忘作用,因而可用于包括人在内的哺乳动物的脑机能改善,例如老年性痴呆、早老性痴呆、帕金森氏病以及其它中枢神经疾病的预防或治疗。
Claims (7)
1.由通式(I)表示的杂环化合物,
R1表示氢原子、C1-C6烷基或苄氧基,R2表示甲基或无取代基,R3表示氢原子、C1-C6烷基、C2-C6链烯基、C3-C8环烷基或-CH2R5[R5为苯基(可被C1-C6烷基、卤原子、氰基取代)或噻吩基],R4表示C1-C6烷基、C2-C6链烯基、C3-C8环烷基或-CH2R6[R6为苯基(可被C1-C6烷基、卤原子、氰基取代)、萘基或噻吩基],或者R3和R4结合形成
(R7为氢原子、卤原子、C1-C6烷氧基、氰基、三氟甲基)、
环戊烯或环戊烷;但是,当
时,R3为氢原子,或者R3和R4结合形成
(R8为卤原子、C1-C6烷氧基、氰基、三氟甲基)、
环戊烯或环戊烷;此外,只有当
为
时,R2作为取代基存在,可以为甲基。
2.权利要求1的化合物,其中R3和R4都为苄基。
3.权利要求1的化合物,所述化合物为3,3-二苄基咪唑并[1,2-a]嘧啶-2(3H)-酮、5,5-二苄基咪唑并[2,1-b]噻唑-6(5H)-酮、5,5-二苄基-2-甲基咪唑并[2,1-b]噻唑-6(5H)-酮、5,5-二苄基-2,3-二氢咪唑并[2,1-b]噻唑-6(5H)-酮或4,4-二苄基-1-甲基-5-氧-4,5-二氢咪唑。
5.权利要求1的化合物,所述化合物为螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-苯并[f]茚满]、螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-(4’-氟代茚满)]、螺[咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-((1,2,5-噻二唑并)[4,5-c]茚满)]、螺[5,6,7,8-四氢咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-苯并[f]茚满]、螺[5,6,7,8-四氢咪唑并[1,2-a]吡啶-2(3H)-酮-3,2’-茚满]、螺[咪唑并[2,1-a]异喹啉-2(3H)-酮-3,2’-茚满]、螺[咪唑并[2,1-a]异喹啉-2(3H)-酮-3,2’-((1,2,5-噻二唑并)[4,5-c]茚满)]或螺[咪唑并[2,1-a]异喹啉-2(3H)-酮-3,1’-(3’-环戊烯)]。
6.药物组合物,该组合物含有药学上可接受的稀释剂或载体和有效量的权利要求1-5中所述的至少一种化合物。
7.脑机能改善剂,该改善剂包含权利要求1-5中所述的至少一种化合物。
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2002
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- 2002-01-30 AU AU2002230098A patent/AU2002230098B2/en not_active Ceased
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI501767B (zh) * | 2008-02-28 | 2015-10-01 | Zenyaku Kogyo Kk | 治療認知損傷之套組、組成物、產品或藥劑之用途 |
CN102395366A (zh) * | 2009-04-14 | 2012-03-28 | 金·尼古拉斯·格林 | 降低前ADAM10分泌酶和/或β分泌酶水平的方法 |
CN106478638A (zh) * | 2016-08-31 | 2017-03-08 | 安徽省鸿鑫生物科技有限公司 | 一种2‑羟基‑7‑甲基咪唑并[1,2‑a]嘧啶的制备方法 |
Also Published As
Publication number | Publication date |
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US20060205742A1 (en) | 2006-09-14 |
KR20030070145A (ko) | 2003-08-27 |
EP1357124B1 (en) | 2005-08-03 |
ES2247304T3 (es) | 2006-03-01 |
DE60205338T2 (de) | 2006-06-01 |
JP4285994B2 (ja) | 2009-06-24 |
US7767824B2 (en) | 2010-08-03 |
WO2002060907A1 (fr) | 2002-08-08 |
ATE301125T1 (de) | 2005-08-15 |
US7141579B2 (en) | 2006-11-28 |
US20040048879A1 (en) | 2004-03-11 |
JPWO2002060907A1 (ja) | 2004-11-11 |
DE60205338D1 (de) | 2005-09-08 |
CA2436589C (en) | 2010-10-19 |
CA2436589A1 (en) | 2002-08-08 |
CN100338074C (zh) | 2007-09-19 |
EP1357124A1 (en) | 2003-10-29 |
AU2002230098B2 (en) | 2007-06-14 |
EP1357124A4 (en) | 2004-02-04 |
KR100850818B1 (ko) | 2008-08-06 |
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