Synthesis of 3-amino-2,4(1<i>H</i>,3<i>H</i>)-quinazolinediones for testing as anticonvulsants
作者:M. J. Kornet、T. Varia、W. Beaven
DOI:10.1002/jhet.5570210558
日期:1984.9
A number of 3-amino-2,4(1H,3H)-quinazolinediones were synthesized from o-aminobenzoylhydrazines and ethyl chloroformate in pyridine or from 2-methoxycarbonylphenyl isocyanate and 1,1-disubstituted hydrazines. Four of the ten compounds screened exhibited anticonvulsant activity in mice.
3-Amino(1H,3H)quinazoline-2,4-dione derivatives and their therapeutic
申请人:Berri-Balzac
公开号:US04268511A1
公开(公告)日:1981-05-19
This invention relates to compounds having the formula: ##STR1## in which R.sub.1 and R.sub.2 are independently hydrogen, a C.sub.1-4 alkyl group or an aliphatic or aromatic acyl group, provided R.sub.1 and R.sub.2 are not simultaneously hydrogen, or, together with the nitrogen atom to which they are attached, R.sub.1 and R.sub.2 form a 5- or 6-membered ring which may carry another heteroatom; R.sub.3 is a C.sub.1-4 alkyl group; and R.sub.4 and R.sub.5 represent independently a hydrogen or halogen atom, a C.sub.1-4 alkyl group or a C.sub.1-4 alkoxy group; and the acid addition salts of the above compounds. Said new compounds have an anxiolytic and diuretic action, together with a spasmolytic action of non-.alpha.-adrenalytic nature on the unstriated muscle fibers.