.ALPHA.-Methylene-.GAMMA.-butyrolactones: Synthesis and Vasorelaxing Activity Assay of Coumarin, Naphthalene, and Quinoline Derivatives.
作者:Yeh-Long CHEN、Tai-Chi WANG、Nein-Chen CHANG、Ya-Ling CHANG、Che-Ming TENG、Cherng-Chyi TZENG
DOI:10.1248/cpb.46.962
日期:——
5-tetrahydro-2-methyl-4-methylene-5-oxo-2- furanyl)methoxy]quinoline (10a) and other quinoline derivatives (11a, 12a) are pure irreversible non-competitive blockers of NE-receptor with no intrinsic activity. The aromatic ring played an important role in the vasorelaxing effects of alpha-methylene-gamma-butyrolactones; naphthalene was inactive, quinolines exhibited only affinity to the alpha-receptor, and coumarins
合成了香豆素,萘和喹啉的某些α-亚甲基-γ-丁内酯衍生物,并评估了其对离体大鼠胸主动脉的血管舒张作用。具有脂肪族甲基取代基的7-[(2,3,4,5-四氢-2-甲基-4-亚甲基-5-氧代-2-呋喃基)甲氧基] -2H-1-苯并吡喃-2-酮内酯C2的抗性比其C2-苯基对应物对高K +(80 mM)介质,Ca2 +(1.9 mM)诱导的血管收缩和去甲肾上腺素(NE,3 microM)诱导的阶段性和强直性收缩更具活性(2a vs 2b; 2c与2d; 2e与2f; 2g与2h)。尽管3-氯-7-[(2,3,4,5-四氢-2-甲基-4-亚甲基-5-氧代-2-呋喃基)甲氧基] -4-甲基-2H-1-苯并吡喃-2-酮(2g)对NE诱导的抑制作用最强低至10微克/毫升的阶段性和强直性收缩,它既具有对NE受体的亲和力,又具有触发血管收缩的固有活性。但是,8-[(2,3,4,5-四氢-2-甲基-4-亚甲基-5