The Hantzsch Synthesis with 6-Aminouracils: One Step Synthesis of Pyrido[2,3-d]pyrimidines
作者:Masahiro Kajino、Kanji Meguro
DOI:10.3987/com-90-5554
日期:——
A one-step synthesis of new pyrido [2,3-d]pyrimidine derivatives (III) was achieved through the Hantzsch synthesis using 6-aminouracils (I) as enamine nucleophiles.
Dihydropyridine derivatives, their production and use
申请人:Takeda Chemical Industries, Ltd.
公开号:EP0094159B1
公开(公告)日:1990-03-14
US4892875A
申请人:——
公开号:US4892875A
公开(公告)日:1990-01-09
New 1,4-dihydropyridine derivatives with potent and long-lasting hypotensive effect.
In a search for new 1, 4-dihydropyridine derivatives with a long-lasting effect on the cardiovascular system, a series of piperazinylalkyl esters (I) bearing a lipophilic substituent on the 4-nitrogen of the piperazine ring was synthesized and tested for hypotensive effect in spontaneously hypertensive rats (SHR). Compounds I, especially those having a diphenylmethyl moiety on the piperazine ring, showed extremely potent and long-lasting hypotensive properties. Analogues related to I were also prepared, and the structure-activity relationships are discussed.