Design and synthesis of alkyl 7,7-dihalo-3-methyl-5-(nitrophenyl)-2-azabicyclo[4.1.0]hept-3-ene-4-carboxylates with calcium channel antagonist activity
作者:Javid S. Mojarrad、Dean Vo、Carlos Velázquez、Edward E. Knaus
DOI:10.1016/j.bmc.2005.03.047
日期:2005.6
A group of alkyl 7,7-dihalo-3-methyl-5-(2- or 3-nitrophenyl)-2-azabicyclo[4.1.0]hept-3-ene-4-carboxylates were prepared by reaction of dihalocarbenes (:CX(2), X=Br, Cl) with alkyl 2-methyl-4-(2- or 3-nitrophenyl)-1,4-dihydropyridine-3-carboxylates. In vitro calciumchannelantagonist activities were determined using a guinea pig ileum longitudinal smooth muscle assay. The title compounds exhibited
通过二卤卡宾的反应制备一组烷基7,7-二卤-3-甲基-5-(2-或3-硝基苯基)-2-氮杂双环[4.1.0]庚-3-烯-4-羧酸酯(: CX(2),X = Br,Cl)具有2-甲基-4-(2-或3-硝基苯基)-1,4-二氢吡啶-3-羧酸烷基酯。使用豚鼠回肠纵向平滑肌测定法测定体外钙通道拮抗剂活性。标题化合物表现出比参考药物硝苯地平(1.4 x 10(-8)M)弱的CC拮抗剂活性(10(-5)至10(-7)M范围)。构效关系表明,C-5苯环上硝基取代基的位置(邻位或间位),大小(Br和Cl的范德华半径分别为1.95和1.80A)和/或电负性( C-7双键卤素原子的Cl> Br)似乎对CC拮抗剂活性没有显着影响。相反,当具有Me或Et烷基酯基的化合物相对于参考药物硝苯地平(IC( 50)= 1.40 x 10(-8)M)。用生物等位性双峰-二卤代环丙基取代硝苯地平中存在的2-甲基-3-甲氧基羰
Approaches to combinatorial synthesis of heterocycles: Solid phase synthesis of pyridines and pyrido[2,3-d]pyrimidines
作者:Mikhail F Gordeev、Dinesh V Patel、Jie Wu、Eric M Gordon
DOI:10.1016/0040-4039(96)00923-9
日期:1996.7
An efficient solid phase synthesis of diverse pyridines and pyrido[2,3-d]pyrimidines is described. O-Immobilized keto esters 2 react with aldehydes to afford Knoevenagel derivatives 3. These undergo Hantzsch-condensation with α-oxo enamines to generate 1,4-dihydropyridines 4 that are oxidized with CAN to produce immobilized pyridines 5. The method has been extended to synthesis of fused pyrido[2,3-d]pyrimidines
描述了多种吡啶和吡啶并[2,3-d]嘧啶的有效固相合成。O-固定化的酮酯2与醛反应,得到Knoevenagel衍生物3。它们与α-氧代烯胺进行汉茨缩合反应,生成1,4-二氢吡啶4,然后被CAN氧化,生成固定的吡啶5。该方法已扩展到使用6-氨基尿嘧啶作为α-氧代烯胺成分合成稠合的吡啶并[2,3-d]嘧啶。通过凝胶相13 C NMR光谱法研究了固相上的反应过程。该合成被设计为适合组合库的制备。
1,4-Dihydropyridine derivatives, and pharmaceutical method of the same
申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04284634A1
公开(公告)日:1981-08-18
1,4-dihydropyridine derivatives of the general formula ##STR1## having vasodilating and anti-hypertensive activity, processes for preparing same, and pharmaceutical compositions thereof for treating cardiovascular diseases.