Synthesis of 1,2,3,4-tetrahydro-5<i>H</i>-[1]benzopyrano[3,4-<i>c</i>]pyridin-5-ones. I. 3-unsubstituted compounds
作者:David T. Connor、Paul C. Unangst、Charles F. Schwender、Roderick J. Sorenson、Mary E. Carethers、Chester Puchalski、Richard E. Brown
DOI:10.1002/jhet.5570210563
日期:1984.9
Synthesis of 1,2,3,4-tetrahydro-5H-[1]benzopyrano[3,4-c]pyridin-5-ones via a Pechmann condensation of 3-carbethoxy-1-methyl-4-piperidone with various phenols is described. The limitations of this method are discussed. Synthesis of the parent ring system 3a via reduction of 1,2,3,4-tetrahydro-3-(phenylmethyl)-8-[(1-phenyl-1H-tetrazol-5-yl)oxy]-5H-[1]benzopyrano[3,4-c]pyridin-5-one (5) is also described
通过3-碳乙氧基-1-甲基-4-哌啶酮与各种酚的Pechmann缩合反应合成1,2,3,4-四氢-5 H- [1]苯并吡喃并[3,4- c ]吡啶-5-描述。讨论了该方法的局限性。母环系统的合成图3a经由还原的1,2,3,4-四氢-3-(苯基甲基)-8 - [(1-苯基-1- ħ -四唑-5-基)氧基] -5- ħ - [还描述了1]苯并吡喃并[3,4- c ]吡啶-5-一(5)。
3-(2-Mono-and dialkylamino)propyl(-1,2,3,4-tetrahydro-5H-(1) benzopyrano(3,4-c)pyridin-5-ones and derivatives thereof, a process for their production, and pharmaceutical compositions containing such compounds
申请人:WARNER-LAMBERT COMPANY
公开号:EP0087280A2
公开(公告)日:1983-08-31
Antichofinergic 3-[2-(mono- and dialkylamino)-propyl]-1,2,3,4-tetrahydro-5H-[1]benzopyrano [3,4-c]-pyridin-5-ones, useful for treating bronchospastic diseases in mammals, are disclosed. Also disclosed are processes for preparing the compounds, and pharmaceutical compositions containing them. The novel compounds have the following formula:
where X is a lower alkyl radial, Y is hydrogen or a lower alkyl, and R', R2 and R3 are, separately, hydrogen atoms or substituents.
A process for preparing the intermediate which is required to prepare the unsubstituted benzopyrano-[3,4-c]pyridin-5- ones of the present invention is also disclosed
CONNOR, D. T.;UNANGST, P. C.;SCHWENDER, CH. F.;SORRENSON, R. J.;CARETHERS+, J. HETEROCYCL. CHEM., 1984, 21, N 5, 1557-1559
作者:CONNOR, D. T.、UNANGST, P. C.、SCHWENDER, CH. F.、SORRENSON, R. J.、CARETHERS+
DOI:——
日期:——
Novel 3-(2-(azabicyclo) ethyl)1,2,3,4-tetrahydro-5H(1)benzopyrano(3,4-c)pyridin-5-ones, pharmaceutical compositions containing them and processes for their production