组胺与三氟乙醛的热缩合得到4-(三氟甲基)spinacamine,随后用二氧化硒脱氢得到4-(三氟甲基)-1 H-咪唑并[4,5- c ]吡啶(42%)。由L-组氨酸与甲醛缩合得到的L-丝氨酸碱的四氟化硫氟化,得到6-(三氟甲基)spinacamine,可以将其转化为6-(三氟甲基)-1 H-咪唑并[4,5- c ]吡啶与二氧化硒(49%)。将顺序反应应用于4-(三氟甲基)-L-丝氨酸碱,得到4,6-双(三氟甲基)-1 H-咪唑并[4,5- c]吡啶。在四氟化硫氟化过程中也发生了四氢吡啶环的脱氢反应。
Imidazopiperidine amides as dipeptidyl peptidase IV inhibitors for the treatment of diabetes
作者:Ping Chen、Charles G. Caldwell、Robert J. Mathvink、Barbara Leiting、Frank Marsilio、Reshma A. Patel、Joseph K. Wu、Huaibing He、Kathryn A. Lyons、Nancy A. Thornberry、Ann E. Weber
DOI:10.1016/j.bmcl.2007.08.030
日期:2007.11
A series of substituted imidazopiperidine amides has been prepared and evaluated for inhibition of dipeptidylpeptidaseIV (DPP-4). Substitution at the 1- and 3-positions produced increased selectivity for DPP-4 relative to DPP-8 and DPP-9. Compounds in this series had IC(50) values as low as 5.8 nM for inhibition of DPP-4.
The present invention is directed to compounds of Formulas (I, IIa and IIb):
The invention also relates to pharmaceutical compositions comprising compounds of Formulas (I, IIa and IIb). Methods of making and using the compounds of Formulas (I, IIa and IIb) are also within the scope of the invention.
The present invention is directed to compounds of Formulas (I, Ia, IIa and IIb). The invention also relates to pharmaceutical compositions comprising compounds of Formulas (I, Ia, IIa and IIb). Methods of making and using the compounds of Formulas (I, Ia, IIa and IIb) are also within the scope of the invention.
The present invention is directed to compounds of Formulas (I, IIa and IIb):
The invention also relates to pharmaceutical compositions comprising compounds of Formulas (I, IIa and IIb). Methods of making and using the compounds of Formulas (I, IIa and IIb) are also within the scope of the invention.