The present invention is directed to a novel method of preparing of 2,4,8-trisubstituted pyrido[2,3-d]pyrimidin-7-one pharmacophores of Formula (II) or (IIa)
wherein
G1 is CH
2
;
G2 is CH;
Rx is chloro, bromo, iodo, or O—S(O)
2
CF
3
;
R
g
is a C
1-10
alkyl;
m is 0, or an integer having a value of 1, or 2;
R
3
is a C
1-10
alkyl, C
3-7
cycloalkyl, C
3-7
cycloalkyl C
1-10
alkyl, aryl, arylC
1-10
alkyl, heteroaryl, heteroarylC
1-10
alkyl, heterocyclic or a heterocyclylC
1-10
alkyl moiety, and wherein each of these moieties may be optionally substituted.
which comprises reacting a compound of the formula:
wherein
Ry is chloro, bromo, iodo, O—S(O)
2
CF
3
; and
Rg is a C
1-10
alkyl;
with a olefin forming reagent in a suitable base to yield a compound of Formula (II), or (IIa) wherein m=0 and oxidizing the sulphur as necessary or desired.
本发明涉及一种制备2,4,8-三取代
吡啶[2,3-d]
嘧啶-7-酮药物基团的新方法,其
化学式为(II)或(IIa),其中G1为
CH2;G2为CH;Rx为
氯、
溴、
碘或O—S(O)2CF3;Rg为C1-10烷基;m为0,或一个值为1或2的整数;R3为C1-10烷基、C3-7环烷基、C3-7环烷基C1-10烷基、芳基、芳基C1-10烷基、杂环芳基、杂环芳基C1-10烷基、杂环或杂环C1-10烷基基团,其中这些基团可以选择性地被取代。该方法包括将以下化合物与烯烃形成试剂在适当的碱性条件下反应,生成式为:其中Ry为
氯、
溴、
碘、O—S(O)2CF3;Rg为C1-10烷基;从而得到化合物(II)或(IIa),其中m=0,并根据需要或愿望氧化
硫。