CN107496419B - 一种具有抗炎活性的环戊烷并[b]吡咯类化合物 - Google Patents
一种具有抗炎活性的环戊烷并[b]吡咯类化合物 Download PDFInfo
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
- A61K31/403—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil condensed with carbocyclic rings, e.g. carbazole
Abstract
本发明公开专利申请号为201510253806.6的中国专利公开的合成方法合成的1,2,5‑三取代1,4,5,6‑四氢环戊烷并[b]吡咯类化合物的抗炎活性。通过该环戊烷并[b]吡咯类化合物与市售抗炎药塞来昔布对12‑氧‑十四烷酰佛波醇‑13‑醋酸酯(TPA)介导的小鼠耳朵水肿模型抗炎实验对比证明其有很好的抗炎活性。
Description
技术领域
本发明涉及1,2,5-三取代1,4,5,6-四氢环戊烷并[b]吡咯类化合物及其药用可接受的盐的抗炎活性,属于医药技术领域。
背景技术
炎症是机体组织对损伤性刺激(如有害刺激、病菌或物理损伤)的一种防御反应。在炎症过程中,一方面损伤因子直接或间接造成组织和细胞的破坏,另一方面通过炎症充血和渗出反应,以稀释、杀伤和包围损伤因子。同时通过实质和***的再生功能使受损的组织得以修复和愈合。其中,致炎因子可引起炎症局部组织发生变性和坏死,白细胞介素-1β(IL-1β)、白细胞介素-6 (IL-6)、肿瘤坏死因子α(TNF-α)是常见的至炎因子,其异常增多会导致炎症的发生。因此,通过药物减少过量的致炎因子,是实现炎症化学预防的一个合理的策略。此外,环氧合酶(COX)是花生四烯酸代谢的限速酶,其中 COX-2是一种诱导酶,在组织损伤、炎症等情况下表达增强。降低COX-2表达也是当前预防炎症的重要策略。
含有环戊烷并[b]吡咯结构的化合物1-(4-甲基苯基)-2-(4-甲磺酰基苯基) -二取代1,4,5,6-四氢环戊烷并[b]吡咯作为一种环氧合酶-2抑制剂,已经发展成为一种抗炎药,同时它的使用能够减少传统抗炎药中常伴有的胃肠道副反应,因此,它将成为一种很有市场前景的抗炎药物(P.R.China Pat.,CN1955163A, 2007)。我们之前申报的申请号为:201510253806.6的中国专利报道了一种合成1,2,5-三取代1,4,5,6-四氢环戊烷并[b]吡咯类化合物的新方法。基于该方法合成的一系列1,2,5-三取代1,4,5,6-四氢环戊烷并[b]吡咯类化合物。通过该类化合物与市售抗炎药塞来昔布对12-氧-十四烷酰佛波醇-13-醋酸酯(TPA)介导的小鼠耳朵水肿模型抗炎实验对比证明这些分子有很好的抗炎活性。因此,本发明可为制备新的抗炎药物提供了新的来源。
发明内容
本发明目的在于提供一种具有的1,2,5-三取代1,4,5,6-四氢环戊烷并[b]吡咯类化合物及其药用可接受的盐的抗炎活性。
式Ⅰ的化合物及其药用中可接受的盐在制备抗炎药物中的应用。
其中R1为叔丁基、取代或未取代的苯基,取代基可以是卤素、烷基、烷氧基、硝基;R2为氢、炔丙基、取代或未取代的芳香环和芳烷基、C1-C8取代或未取代直链或支链烷基;R3为氢、取代或未取代的苯基,取代基可以是卤素、烷基、烷氧基、硝基、卤代烷基、卤代烷氧基。
式Ⅰ的化合物及其药用中可接受的盐,R1代表叔丁基、苯基,及取代苯基,如2-甲基苯基、3-甲基苯基、4-甲基苯基、2-甲氧基苯基、3-甲氧基苯基、4-甲氧基苯基、2-氟苯基、3-氟苯基、4-氟苯基、2-氯苯基、3-氯苯基、4-氯苯基、2-溴苯基、3-溴苯基、4-溴苯基、2-碘苯基、3-碘苯基、4-碘苯基、2-硝基苯基、3-硝基苯基、4-硝基苯基、2-三氟甲基苯基、3-三氟甲基苯基、4-三氟甲基苯基。
式Ⅰ的化合物及其药用中可接受的盐,R2代表氢、甲基、乙基、丙基、环丙基、异丙基、丁基、环丁基、异丁基、叔丁基、戊基、环戊基、异戊基、新戊基、己基、环己基、苯基,及取代苯基,如2-甲基苯基、3-甲基苯基、4- 甲基苯基、2-甲氧基苯基、3-甲氧基苯基、4-甲氧基苯基、2-氟苯基、3-氟苯基、4-氟苯基、2-氯苯基、3-氯苯基、4-氯苯基、2-溴苯基、3-溴苯基、4-溴苯基、2-碘苯基、3-碘苯基、4-碘苯基、2-硝基苯基、3-硝基苯基、4-硝基苯基、 2-三氟甲基苯基、3-三氟甲基苯基、4-三氟甲基苯基、苄基、4-甲氧基苄基、苯乙基、苯丙基.
式Ⅰ的化合物及其药用中可接受的盐,R3代表氢、苯基。
式Ⅰ的化合物及其药用中可接受的盐,优选地,通式Ⅰ化合物包括2-苯基-1,4,5,6-四氢环戊烷并吡咯、1-乙基-2-苯基-1,4,5,6-四氢环戊烷并吡咯、1- 丙基-2-苯基-1,4,5,6-四氢环戊烷并吡咯、1-丙基-2-(4甲氧基苯基)-1,4,5,6- 四氢环戊烷并吡咯、1-环丙基-2-苯基-1,4,5,6-四氢环戊烷并吡咯、1-丁基-2-苯基-1,4,5,6-四氢环戊烷并吡咯、1-环己基-2-苯基-1,4,5,6-四氢环戊烷并吡咯、 1-苄基-2-苯基-1,4,5,6-四氢环戊烷并吡咯、1-(4-氯苯基)-2-苯基-1,4,5,6-四氢环戊烷并吡咯、1-(4-氯苯基)-2-苯基-1,4,5,6-四氢环戊烷并吡咯、2- (4-甲氧基苯基)-1,4,5,6-四氢环戊烷并吡咯、1-丙基-2-(4-甲氧基苯基)- 1,4,5,6-四氢环戊烷并吡咯、1,2,5-三苯基-1,4,5,6-四氢环戊烷并吡咯、1-丙基-2,5-二苯基-1,4,5,6-四氢环戊烷并吡咯、1-丙基-2-(4-三氟甲基苯基)-1, 4,5,6-四氢环戊烷并吡咯。
式Ⅰ的化合物及其药用中可接受的盐,其药学上可接受的盐是指无机酸盐和有机酸盐,其中无机盐有硫酸氢盐、硫酸盐、盐酸盐、氢溴酸盐、硝酸盐;有机酸盐有乙酸盐、对甲苯磺酸盐、苯磺酸盐、甲磺酸盐、草酸盐、枸缘酸盐、富马酸盐、苹果酸盐、酒石酸盐、丙酮酸盐。
本发明主要公开通式Ⅰ所示的化合物的抗炎活性。
具体实施例
1,2,5-三取代1,4,5,6-四氢环戊烷并[b]吡咯类化合物的制备。
本发明中环戊烷并吡咯类化合物均可参照我们之前申请号为 201510253806.6的中国专利和期刊文章Chem.Commun.2015,51,12064报道的方法制备。
本发明抗炎活性实验
采用1,2,5-三取代1,4,5,6-四氢环戊烷并[b]吡咯类化合物a-j(式1)与市售抗炎药塞来昔布对12-氧-十四烷酰佛波醇-13-醋酸酯(TPA)介导的小鼠耳朵水肿模型抗炎实验对比来证明其的抗炎活性。
1.药物的配制:
1)将TPA用丙酮溶解配制0.08uM的溶液。
2)分别将塞来昔布和化合物a-j用溶剂(二氯甲烷:二甲基亚砜=4:1)溶解配制0.75μM的溶液。
2小鼠选择
选取5-6周的雌性BALB/c小鼠(从广东省医学实验动物中心购买)
3试验方法
取0.75μM(15ul)分别溶有塞来昔布和化合物a-j的溶液均匀涂抹在各组小鼠耳朵正反两面,空白对照组和TPA组用15ul混合溶剂(二氯甲烷:二甲基亚砜=4:1)同样处理。6分钟后,TPA组,塞来昔布阳性对照组和以及化合物a-j 实验组分别用0.08uM(15ul)的TPA处理(均匀涂抹在小鼠耳朵正反两面),空白对照组用15ul丙酮处理。6h后,将小鼠断锥处死,剪下小鼠耳朵,用6mm的打孔器取耳片,称重。
抗炎抑制率:IE(%)=[(TPA组耳片重量)-(化合物组耳片重量]/[(TPA组耳片重量)-(空白组耳片重量)]×100.
表1 TPA-诱导的小鼠耳朵抗炎模型检测环戊烷并吡咯化合物抗炎作用
由表1可见,环戊烷并[b]吡咯类化合物a-j具有显著的抗炎活性,因此,可用于制备抗炎药物。
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