申请人:Warner-Lambert Company
公开号:US05484930A1
公开(公告)日:1996-01-16
The present invention relates to compounds of the formula ##STR1## wherein each of R and R.sub.1 is a lower alkyl group having from 1 to 4 carbon atoms, which are useful as intermediates to make chiral ethyl (5-amino-1,2-dihydro-2-methyl-3-phenylpyrido[3,4-b]pyrazin-7-yl)carbamate.
本发明涉及以下化合物的公式##STR1##其中R和R1各自是具有1至4个碳原子的较低烷基基团,这些化合物可用作制备手性乙基(5-氨基-1,2-二氢-2-甲基-3-苯基吡啶并[3,4-b]吡嗪-7-基)氨基甲酸酯的中间体。