Intramolecular Photocycloaddition Reactions of Arylcyclopropane Tethered 1-Cyanonaphthalenes
作者:Hajime Maeda、Shoji Matsuda、Kazuhiko Mizuno
DOI:10.1021/acs.joc.6b01721
日期:2016.9.16
Intramolecular photocycloaddition reactions of 1-cyanonaphthalenes bearing an arylcyclopropane containing side chain were investigated. Photoreactions of members of this family in which the arylcyclopropane moiety is bonded at the 2-position of the 1-cyanonaphthalene ring produce head-to-head and head-to-tail 1,2-[3+2] photocycloadducts. On the other hand, substances in this family containing an arylcyclopropane
Photoreactions of 1-cyanonaphthalene derivatives containing 5-arylpent-4-enyl groups at C-2 or C-4 of the naphthalene ring were investigated. Photoreactions of C-2 derivatives in benzene or CH3CN generated intramolecular [2 + 2] and [3 + 2] photocycloadducts. Substances bearing electron-rich and electron-poor phenyl groups produced respective [2 + 2] and [3 + 2] photocycloadducts preferentially. In
Fused pyridine derivatives shown as the general formula (I), and their pharmaceutically acceptable salts, stereoisomers or solvates thereof are disclosed, which belong to the technical field of medicines. The R
1
, R
2
, R
3
, Q, X and Y substituents in formula (I) are defined as in the description. Also disclosed are the preparation methods, pharmaceutical compositions comprising the compounds and uses of the compounds in the manufacture of the medicine for the treatment and/or prevention of noninsulin-dependent diabetes, hyperglycemia, hyperlipidemia and insulin resistance.
We report our discovery of a novel series of potent and selective dipeptidylpeptidaseIV (DPP-4) inhibitors. Starting from a lead identified by scaffold-hopping approach, our discovery and development efforts were focused on exploring structure-activityrelationships, optimizing pharmacokinetic profile, improving in vitro and in vivo efficacy, and evaluating safety profile. The selected candidate
Nickel-Catalyzed Intramolecular Dual Annulation Reaction of Aryl Nitrile-Containing 1,2,3-Benzotriazin-4(3<i>H</i>)-ones: A Pathway To Synthesize Luotonin A and Related Polycyclic Pyrroloquinazolinones
作者:Vijaykumar H. Thorat、Jen-Chieh Hsieh
DOI:10.1021/acs.orglett.3c03142
日期:2023.11.10
Herein, we report a nickel-catalyzed intramolecular denitrogenative dual annulation reaction of aryl nitrile-containing 1,2,3-benzotriazine-4(3H)-ones to synthesize polycyclic pyrroloquinazolinones with a tolerance of a wide diversity of substituents. This catalytic reaction is the first denitrogenative transannulation of 1,2,3-benzotriazine-4(3H)-one with nitrile, which can be applied as the critical
在此,我们报道了含芳基腈的1,2,3-苯并三嗪-4(3 H )-酮的镍催化分子内脱氮双环化反应,合成了具有多种取代基的多环吡咯并喹唑啉酮。该催化反应是1,2,3-苯并三嗪-4(3H)-酮与腈的首次脱氮转环反应,可作为合成洛托宁A的关键步骤,具有较高的步骤经济性。