新型2,7-二取代-3-氨基-9-三氟甲基-4-氧代-4 H-吡啶基- [3',2':4,5 ]-呋喃基- [3,2- d ]-(1 ,3)-嘧啶
摘要:
新型2,7-二取代-3-氨基-9-三氟甲基-4-氧代-4 H-吡啶基- [3',2':4,5 ]-呋喃基- [3,2- d ]-(1经由一系列新的中间体,例如2 - O-乙基乙酰氧基-3-氰基-4-的3-氰基-4-三氟甲基-6-取代的2(1 H)-吡啶酮(1)中的,3)-嘧啶(5)三氟甲基-6取代的吡啶(2),2-甲乙氧基-3-氨基-4-三氟甲基6取代的呋喃-[2,3- b ]-吡啶(3)和2-碳酰肼-3-氨基-4-已经描述了三氟甲基-6-取代的呋喃-[2,3- b ]-吡啶(4)。
新型2,7-二取代-3-氨基-9-三氟甲基-4-氧代-4 H-吡啶基- [3',2':4,5 ]-呋喃基- [3,2- d ]-(1 ,3)-嘧啶
摘要:
新型2,7-二取代-3-氨基-9-三氟甲基-4-氧代-4 H-吡啶基- [3',2':4,5 ]-呋喃基- [3,2- d ]-(1经由一系列新的中间体,例如2 - O-乙基乙酰氧基-3-氰基-4-的3-氰基-4-三氟甲基-6-取代的2(1 H)-吡啶酮(1)中的,3)-嘧啶(5)三氟甲基-6取代的吡啶(2),2-甲乙氧基-3-氨基-4-三氟甲基6取代的呋喃-[2,3- b ]-吡啶(3)和2-碳酰肼-3-氨基-4-已经描述了三氟甲基-6-取代的呋喃-[2,3- b ]-吡啶(4)。
Novel fluorinated 4-oxo-4H-pyrido[3',2':4,5]furo[3,2-d]-1,3-oxazines have been synthesised from 2-carbethoxy-3-amino-4-trifluoromethyl-6-aryl-substituted furo[2,3-b] pyridines via intermediates such as 2-carboxy-3-amino-4-trifluoromethyl-6-aryl-substituedfuro[2,3-b]pyridines. and 2-carboxy-3-trifluoroacetylamino-4-trifluoromethyl-6-aryl-substituted furo [2,3-b]pyridines. The CF3 group induces changes in the reactivity in the molecule and the consequent regioselective attack of nucleophiles on the oxazine ring have been studied and utilized for mechanistic interpretation.
Srinivas; Maitraie; Shanthan Rao, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2003, vol. 42, # 3, p. 605 - 610