Synthesis of novel 2,7-disubstituted-3-amino-9-trifluoromethyl-4-oxo-4H-pyrido-[3',2':4,5]-furo-[3,2-d]-(1,3)-pyrimidines
作者:B. Narsaiah、A. Sivaprasad、R.V. Venkataratnam
DOI:10.1016/0022-1139(94)03079-0
日期:1994.11
Synthesis of novel 2,7-disubstituted-3-amino-9-trifluoromethyl-4-oxo-4H-pyrido-[3',2':4,5]-furo-[3,2-d]-(1,3)-pyrimidines (5) from 3-cyano-4-trifluoromethyl-6-substituted 2(1H)-pyridones (1) via a series of new intermediates such as 2-O-ethylacetoxy-3-cyano-4-trifluoromethyl-6-substituted pyridines (2), 2-carbethoxy-3-amino-4-trifluoromethyl-6-substituted furo-[2,3-b]-pyridines (3) and 2-carbohydr
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)。