Synthesis of 4-Alkylated Isocoumarins via Pd-Catalyzed α-Arylation Reaction
作者:Shane Plunkett、Lindsey G. DeRatt、Scott D. Kuduk、Jaume Balsells
DOI:10.1021/acs.orglett.0c02851
日期:2020.10.2
method for the rapid preparation of substituted isocoumarins is reported. The transformation takes advantage of a spontaneous intramolecular cyclization that follows the Pd-catalyzed α-arylation of aldehydes with 2-halobenzoic esters. The reaction uses an air-stable, single-component palladium catalyst and provides access to 4-alkylated isocoumarins in one step from commercial starting materials. The
Novel Design of Nonpeptide AVP V<sub>2</sub> Receptor Agonists: Structural Requirements for an Agonist Having 1-(4-Aminobenzoyl)-2,3,4,5-tetrahydro-1<i>H</i>-1-benzazepine as a Template
The discovery of a series of nonpeptide arginine vasopressin V-2 receptor agonists is described. After identifying the aniline derivative 8 as our lead compound from the metabolites of compound 7 that showed antidiuretic activity by po administration to Brattleboro rats, improvements in the in vitro potency involving evaluations of the structural requirements for agonist action and optimizing the structure of the benzoyl moiety have been intensively undertaken. These studies led to compounds leg, 19a, and 23b,h,i that show patent; agonist activity for the V-2 receptor.