Lead Diversification at the Nanomole Scale Using Liver Microsomes and Quantitative Nuclear Magnetic Resonance Spectroscopy: Application to Phosphodiesterase 2 Inhibitors
作者:R. Scott Obach、Gregory S. Walker、Raman Sharma、Stephen Jenkinson、Tuan P. Tran、Antonia F. Stepan
DOI:10.1021/acs.jmedchem.8b00116
日期:2018.4.26
biochemical assays. Nine human phosphodiesterase-2 (PDE2) inhibitors yielded 36 new analogues. Products were tested for PDE2 inhibition, intrinsic clearance in human hepatocytes, and membrane permeability. Two of the products (2c and 4b) were 3–10× more potent than their respective parent compounds and also had improved metabolic stability. Others offered insights into structure−activity relationships
Synthesis of imidazo-fused bridgehead-nitrogen 2′-deoxyribo-C-nucleosides: coupling-elimination reactions of 2,5-anhydro-3,4,6-tri-O-benzoyl-<scp>D</scp>-allonic acid
作者:Lars J. S. Knutsen、Brian D. Judkins、Roger F. Newton、David I. C. Scopes、Graham Klinkert
DOI:10.1039/p19850000621
日期:——
A short synthesis of imidazo-fused bridgehead-nitrogen 2′-deoxyribo-C-nucleosides has been developed. This is based on a coupling–eliminationreaction of 2,5-anhydro-3,4,6-tri-O-benzoyl-D-allonicacid with a series of aminoalkyl-substituted heterocycles and alcohols. The intermediate α,β-unsaturated carboxamides and esters thus formed are converted into novel imidazo[1,5-a]pyridine, imidazo[1,5-b]pyridazine
咪唑并稠合的桥头氮的短合成2'-脱氧Ç核苷已经研制成功。这是基于2,5-脱水-3,4,6-三-O-苯甲酰基-D-脲酸与一系列氨基烷基取代的杂环和醇的偶联消除反应。如此形成的中间体α,β-不饱和羧酰胺和酯被转化为新型咪唑并[1,5- a ]吡啶,咪唑并[1,5- b ]哒嗪和咪唑并[5,1- f ] [1,2, 4]三嗪-2'-脱氧ç核苷,包括2'-脱氧和2'-脱氧腺苷的类似物。核苷的异头构型的分配是基于质子nOe实验进行的。
Bicyclic heterocyclic compounds as PDE2 inhibitors
申请人:Merck Sharp & Dohme Corp.
公开号:US10287293B2
公开(公告)日:2019-05-14
The present invention is directed to dihydropyrazolopyrimidinone compounds of formulas (I) and (II) which are useful as therapeutic agents for the treatment of central nervous system disorders associated with phosphodiesterase 2 (PDE2). The present invention also relates to the use of such compounds for treating neurological and psychiatric disorders, such as schizophrenia, psychosis, Parkinson's disease, Parkinson's disease dementia (PDD), or Huntington's disease, and those associated with striatal hypofunction or basal ganglia dysfunction.