Precursor compounds to substituted 1,2,4-triazolo[3,4,-a]phathalazine GABA alpha 5 ligands
申请人:Merck Sharpe & Dohme Limited
公开号:US06310203B1
公开(公告)日:2001-10-30
Substituted 1,2,4-Triazolo[3,4-A]phthalazine derivatives that are GABA Alpha 5 ligands are prepared from compounds represented by the formula:
in which R1 is hydrogen, halogen, CF3, OCF3, CN or an optionally substituted C1-4alkyl, C2-4alkenyl, C2-4alkynyl, C1-4alkoxy, C2-4alkenyloxy or C2-4alkynyloxy group; R2 is hydrogen, halogen, CF3, OCF3, CN or an optionally substituted C1-4alkyl, C2-4alkenyl, C2-4alkynyl, C1-4alkoxy, C2-4alkenyloxy or C2-4alkynyloxy group; Z is an optionally substituted 5-membered or 6-membered heteroaromatic ring; and G is a leaving group.