【药物名称】Repirinast, MY-5116, Romet
化学结构式(Chemical Structure):
参考文献No.49487
标题:Repirinast
作者:Casta馿r, J.; Prous, J.
来源:Drugs Fut 1987,12(1),37
合成路线图解说明:

1) The cyclization of 2,3-dimethylaniline (I) with diethyl acetylmalonate (II) in 1-chloronaphthalene at 240 C gives 3-acetyl-4-hydroxy-7,8-dimethylquinolin-2(1H)-one (III), which by reaction with diethyl oxalate (IV) by means of sodium ethoxide in refluxing benzene yields ethyl-4-(4-hydroxy-7,8-dimethyl-2-oxo-1,2-dihydroquinolin-3yl)-2,4-dioxo-butanoate (V). The cyclization of (V) in acetic acid concentrated HCl at 100 C affords 5,6-dihydro-7,8 dimethyl-4,5-dioxo-4H-pyrano[3,2-c]quinoline-2-carboxylic acid (VI), which is converted into the corresponding acyl chloride (VII) by reaction with refluxing SOCl2. Finally, this compound is treated with hot 3-methylbutanol (VIII).

合成路线图解说明:

2) The condensation of quinolone (III) with 3 methylbutyl oxalate (X) [obtained from 3 methyl butanol (VIII) and oxalic acid (IX)] by means of NaH yields 3-methylbutyl-4-(4 hydroxy-7,8-dimethyl-2-oxo-1,2-dihydroquinolin-3-yl)-2,4-dioxobutanoate (XI), which is then cyclized by means of sulfuric acid. ([*]-labeled compound).

参考文献No.546561
标题:Antiallergic agents I. Pyranoquinoline derivatives
作者:Takahashi, K.; Hata, S.; Morinaka, Y.; Yamada, S.
来源:Eur J Med Chem - Chim Ther 1981,16(3),251
合成路线图解说明:

1) The cyclization of 2,3-dimethylaniline (I) with diethyl acetylmalonate (II) in 1-chloronaphthalene at 240 C gives 3-acetyl-4-hydroxy-7,8-dimethylquinolin-2(1H)-one (III), which by reaction with diethyl oxalate (IV) by means of sodium ethoxide in refluxing benzene yields ethyl-4-(4-hydroxy-7,8-dimethyl-2-oxo-1,2-dihydroquinolin-3yl)-2,4-dioxo-butanoate (V). The cyclization of (V) in acetic acid concentrated HCl at 100 C affords 5,6-dihydro-7,8 dimethyl-4,5-dioxo-4H-pyrano[3,2-c]quinoline-2-carboxylic acid (VI), which is converted into the corresponding acyl chloride (VII) by reaction with refluxing SOCl2. Finally, this compound is treated with hot 3-methylbutanol (VIII).

参考文献No.546562
标题:Study in vivo of MY-5116. Absorption, distribution and elimination in rats
作者:Esumi, A.; Jin, Y.; Uohama, K.
来源:Clin Rep 1985,20(2),391
合成路线图解说明:

2) The condensation of quinolone (III) with 3 methylbutyl oxalate (X) [obtained from 3 methyl butanol (VIII) and oxalic acid (IX)] by means of NaH yields 3-methylbutyl-4-(4 hydroxy-7,8-dimethyl-2-oxo-1,2-dihydroquinolin-3-yl)-2,4-dioxobutanoate (XI), which is then cyclized by means of sulfuric acid. ([*]-labeled compound).

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