申请人:Schnabel Gerhard
公开号:US20050033047A1
公开(公告)日:2005-02-10
The invention relates to the preparation of compounds (I)
in which A=H or acyl and R
1
, R
2
, R
3
, R, n, X, Y and Z are as defined in claim 1 by halogenation and rearrangement of compounds (II) (optionally salt) to give compounds (III)
R*═OH, R**═NR
1
R
2
(II)
R*═NR
1
R
2
, R**═Cl (III)
R*═NR
1
R
2
, R**═NH
2
(IV)
a) ammonolysis of (III) to (IV), reduction of the nitro group and reaction with carbamate (salts) (VI) of the formula Ar—OCO—N(M)-Het, where Ar=phenyl, M=H or cation and Het=heterocycle from formula (I), to give compounds (I) (A=H), or
b) ammonolysis of (III) to (IV), reaction with carbamate (salt) (VI) and reduction of resulting compounds (VII) at the NO
2
group to give compounds (I) (A=H), or
c) reaction of (III) with cyanates and amines (V) of the formula HNR
3−
Het and reduction of the resulting compound (VII) at the NO
2
group to give compounds (I) (A=H) and optional acylation if A is to be other than H. Compounds of the formulae (I) (A=H), (III), (IV), (V), (VI) (M=cation) and (VII) are novel.
本发明涉及通过卤化和重排化合物(II)(可选盐)得到化合物(I),其中A=H或酰基,R1、R2、R3、R、n、X、Y和Z如权利要求1所定义,以得到化合物(III)R*═OH,R**═NR1R2(II)R*═NR1R2,R**═Cl(III)R*═NR1R2,R**═NH2(IV)a)氨解(III)得到(IV),还原硝基并与公式(Ar-OCO-N(M)-Het)的碳酸酯(盐)反应,其中Ar=苯基,M=H或阳离子,Het=来自公式(I)的杂环,以得到化合物(I)(A=H),或b)氨解(III)得到(IV),与碳酸酯(盐)(VI)反应,然后还原产生的化合物(VII)的NO2基团以得到化合物(I)(A=H),或c)将(III)与氰酸盐和公式HNR3-Het的胺(V)反应,还原产生的化合物(VII)的NO2基团以得到化合物(I)(A=H),如果A不是H,则可以进行酰化。公式(I)(A=H)、(III)、(IV)、(V)、(VI)(M=阳离子)和(VII)的化合物是新颖的。