三氟乙酸酐 、 2-胺甲基吡嗪 在
ice water 、 silica gel 、 2,2,2-trifluoro-N-(pyrazin-2-ylmethyl)acetamide 作用下,
反应 3.0h,
以to obtain the title compound 2,2,2-trifluoro-N-pyrazin-2-ylmethyl-acetamide 1i (21.0 g) as a brown oil的产率得到2,2,2-trifluoro-N-(pyrazin-2-ylmethyl)acetamide
参考文献:
名称:
Tetrahydro-imidazo[1,5-α]pyrazine derivatives, preparation process and medicinal use thereof
TETRAHYDRO-IMIDAZO[1,5-alpha] PYRAZINE DERIVATIVES, PREPERATION PROCESS AND MEDICINAL USE THEREOF
申请人:Tang Peng Cho
公开号:US20120220766A1
公开(公告)日:2012-08-30
Tetrahydro-imidazo[1,5-a]pyrazine derivatives of formula (I), their preparation methods, pharmaceutical compositions containing the derivatives and uses thereof as medicaments, especially as dipeptidyl peptidase IV inhibitors, wherein the substituents of formula (I) are defined as same as the description.
TETRAHYDRO-IMIDAZ0[1,5-A]PYRAZINE DERIVATIVES, PREPARATION PROCESS AND MEDICINAL USE THEREOF
申请人:Tang Peng Cho
公开号:US20100273786A1
公开(公告)日:2010-10-28
Tetrahydro-imidazo[1,5-a]pyrazine derivatives of formula (I), their preparation methods, pharmaceutical compositions containing the derivatives and uses thereof as medicaments, especially as dipeptidyl peptidase IV inhibitors, wherein the substituents of formula (I) are defined as same as the description.
Tetrahydro-imidazo[1,5-α] pyrazine derivatives, preparation process and medicinal use thereof
申请人:Tang Peng Cho
公开号:US08513411B2
公开(公告)日:2013-08-20
Tetrahydro-imidazo[1,5-a]pyrazine derivatives of formula (I), their preparation methods, pharmaceutical compositions containing the derivatives and uses thereof as medicaments, especially as dipeptidyl peptidase IV inhibitors, wherein the substituents of formula (I) are defined as same as the description.
Salts of (R)-7-[3-amino-4-(2,4,5-trifluorophenyl)butanoyl]-3-trifluoromethyl-5,6,7,8-tetrahydroimidazo[1,5-a] pyrazine-1-carboxylic acid, preparation method and medical use thereof
申请人:Tang Peng Cho
公开号:US08518946B2
公开(公告)日:2013-08-27
Pharmaceutically acceptable salts of (R)-7-[3-amino-4-(2,4,5-trifluorophenyl)-butyryl]-3-trifluoromethyl-5,6,7,8-tetrahydro-imidazo[1,5-a]pyrazine-1-formic acid, their preparation methods, compositions containing the said pharmaceutical salts and their use as medicaments, especially as dipeptidyl peptidase IV (DPP-IV) inhibitors are disclosed. Of the many acceptable salts, one example is the following.