The present invention relates to compounds of the formula (X) which are useful in the synthesis of pyrazolopyrimidinone compounds:
wherein:
R13 is C1 to C4 alkyl optionally substituted with one or two substituents selected from OH, C1 to C4 alkoxy, benzyloxy, NR5R6, phenyl, furanyl and pyridinyl; C3 to C6 cycloalkyl; 1-(C1 to C4 alkyl)piperidinyl; tetrahydrofuranyl or tetrahydropyranyl;
R4 is SO2NR7R8;
R5 and R6 are each independently selected from H and C1 to C4 alkyl, or, together with the nitrogen atom to which they are attached, form a pyrrolidinyl, piperidinyl or morpholinyl group;
R7 and R8, together with the nitrogen atom to which they are attached, form a 4-R10 piperazinyl group optionally substituted with one or two C1 to C4 alkyl groups and optionally in the form of its 4-N-oxide;
R10 is H; C1 to C4 alkyl optionally substituted with one or two substituents selected from OH, NR5R6, CONR5R6, phenyl optionally substituted with C1 to C4 alkoxy, benzodioxolyl and benzodioxanyl; C3 to C6 alkenyl; pyridinyl or pyrimidinyl;
or a salt of such compound, or an acid chloride derivative of such compound.
本发明涉及式(X)化合物,该化合物可用于合成
吡唑嘧啶酮化合物:
其中
R13 是任选被一个或两个取代基取代的 C1 至 C4 烷基,这些取代基选自 OH、C1 至 C4 烷
氧基、苄
氧基、NR5R6、
苯基、
呋喃基和
吡啶基;C3 至 C6
环烷基;1-(C1 至 C4 烷基)
哌啶基;
四氢呋喃基或
四氢吡喃基;
R4 是 SO2NR7R8;
R5 和 R6 各自独立地选自 H 和 C1 至 C4 烷基,或与它们连接的
氮原子一起形成
吡咯烷基、
哌啶基或
吗啉基;
R7 和 R8 与它们所连接的
氮原子一起形成 4-R10
哌嗪基团,该基团可选择被一个或两个 C1 至 C4 烷基取代,也可选择以其 4-N-oxide 的形式存在;
R10 是 H;任选被一个或两个取代基取代的 C1 至 C4 烷基,这些取代基选自 OH、NR5R6、CONR5R6、任选被 C1 至 C4 烷
氧基取代的
苯基、
苯并二噁茂基和
苯并
二噁烷基;C3 至 C6
烯基;
吡啶基或
嘧啶基;
或此类化合物的盐,或此类化合物的酸性
氯化物衍
生物。