The present invention provides a cyclic aminomethyl pyrimidine derivative and a pharmaceutically acceptable salt thereof with high selectivity for dopamine D
4
receptors, which are useful for treating a disease such as attention deficit hyperactivity disorder. Specifically, a compound of formula (1) or a pharmaceutically acceptable salt thereof is provided, wherein n and m are independently 1 or 2; R
a
is C
1-6
alkyl group, C
3-6
cycloalkyl group, or amino group; R
b
is hydrogen atom, C
1-6
alkyl group or the like, provided that when R
a
is amino group, then R
b
is hydrogen atom; R
c1
and R
c2
are independently hydrogen atom, or C
1-6
alkyl group; R
d1
and R
d2
are independently hydrogen atom, fluorine atom or the like; ring Q is an optionally-substituted pyridyl group or an optionally-substituted isoquinolyl group; and the bond having a dashed line is a single or double bond.
First Efficient and General Copper-Catalyzed [2,3]-Rearrangement of Tetrahydropyridinium Ylids
作者:Edward Roberts、Julien P. Sançon、Joseph B. Sweeney、James A. Workman
DOI:10.1021/ol035747j
日期:2003.12.1
The factors affecting the copper-catalyzed rearrangement of ammonium ylids derived from tetrahydropyridines and diazoesters have been examined,and the first examples of high-yielding metal-catalyzed [2,3]-sigmatropic rearrangements of a wide range of such ylids are reported. The nature of the alpha-substituent in the diazo component of the reaction has a dramatic effect upon the yields of the reaction