[EN] PYRIDAZIN-3 (2H) -ONE DERIVATIVES AND THEIR USE AS PDE4 INHIBITORS<br/>[FR] DERIVES DE PYRIDAZINE-3(2H)-ONES ET UTILISATION EN TANT QU'INHIBITEURS DE PDE4
申请人:ALMIRALL PRODESFARMA SA
公开号:WO2005049581A1
公开(公告)日:2005-06-02
New pyridazin-e-(2H)-one derivatives having the chemical structure of general formula (I) are disclosed; as well as processes for their preparation, pharmaceutical compositions comprising them and their use in therapy as inhibitors of phosphodiesterase 4.
base-catalyzed cascade nucleophilic/aza-Michael addition reaction of N-alkoxy β-oxo-acrylamides with isocyanates has been developed to afford various highly functionalized hydantoin derivatives in 80–98% yields under mild reaction conditions. The intriguing features of this method include metal-free reaction conditions, low catalyst loading, broad substrate scope and short reaction time.
作者:Wei Li Wan、Jian Bo Wu、Fan Lei、Xiao Long Li、Li Hai、Yong Wu
DOI:10.1016/j.cclet.2012.11.001
日期:2012.12
cirrhosis, syndrome of inappropriate antidiuretic hormone secretion or other high-volume capacity of hyponatremia. The metabolites of tolvaptan are mainly produced by CYP3A4, including two major compounds named DM-4103 and DM-4107. Herein, the chemical synthesis of those two metabolites is described in this article for further study.
托伐普坦是一种非肽精氨酸加压素(AVP)V 2受体拮抗剂,用于治疗心力衰竭,肝硬化,抗利尿激素分泌不当的综合征或其他低容量性低钠血症。托伐普坦的代谢产物主要由CYP 3 A 4产生,包括两种主要化合物DM-4103和DM-4107。在本文中,这两种代谢物的化学合成在本文中有待进一步研究。
Synthesis of chiral γ-lactones via a RuPHOX-Ru catalyzed asymmetric hydrogenation of aroylacrylic acids
An asymmetrichydrogenation of aroylacrylic acidscatalyzed by RuPHOX-Ru catalyst has been developed, affording the corresponding chiral γ-lactones in high yields and with up to 93% ee. The methodology has the advantage of utilizing easily accessible substrates and has therefore expand the scope of the resulting chiral γ-lactones. Furthermore, high catalytic efficiency was achieved in that the reduction