Regioselective Synthesis of 2-oxo-2,8-dihydro-[l,2,4] oxadiazolo [2,3-a]pyrimidine-7-carbamates: A New Class of Antihypertensive Peripheral Vasodilators
作者:Jean-Claude Muller、Henri Ramuz
DOI:10.1002/hlca.19820650518
日期:1982.7.28
The synthesis of new 2-oxo-2,8-dihydro-[l,2,4]-oxadiazoo-[2,3-a] pyrimidine-carbamates 3 described in this paper is based upon a regioselective heterocyclization of the pyrimidine-2,6-bis (alkoxycarbonylamino) N-oxides 4. Structural and mechanistic aspects of that cyclizalion are discussed.
本文描述的新的2-oxo-2,8-dihydro- [1,2,4] -oxadiazoo- [2,3 - a ]嘧啶-氨基甲酸酯3的合成基于嘧啶2的区域选择性杂环化,6-双(烷氧基羰基氨基)N-氧化物。4 .讨论了环化的结构和机理方面。