Synthesis, Evaluation and Proposed Binding Pose of Substituted Spiro-Oxindole Dihydroquinazolinones As IRAP Inhibitors

Overview

Journal ChemistryOpen

Specialty Chemistry

Date 2020 Mar 11

PMID 32154052

Citations 7

Authors

Karin Engen

Sudarsana Reddy Vanga

Thomas Lundback

Faith Agalo

Vivek Konda

Annika Jenmalm Jensen

Johan Aqvist

Hugo Gutierrez-de-Teran

Mathias Hallberg

Mats Larhed

Ulrika Rosenstrom

Affiliations

Soon will be listed here.

Abstract

Insulin-regulated aminopeptidase (IRAP) is a new potential macromolecular target for drugs aimed for treatment of cognitive disorders. Inhibition of IRAP by angiotensin IV (Ang IV) improves the memory and learning in rats. The majority of the known IRAP inhibitors are peptidic in character and suffer from poor pharmacokinetic properties. Herein, we present a series of small non-peptide IRAP inhibitors derived from a spiro-oxindole dihydroquinazolinone screening hit (pIC 5.8). The compounds were synthesized either by a simple microwave (MW)-promoted three-component reaction, or by a two-step one-pot procedure. For decoration of the oxindole ring system, rapid MW-assisted Suzuki-Miyaura cross-couplings (1 min) were performed. A small improvement of potency (pIC 6.6 for the most potent compound) and an increased solubility could be achieved. As deduced from computational modelling and MD simulations it is proposed that the -configuration of the spiro-oxindole dihydroquinazolinones accounts for the inhibition of IRAP.

Citing Articles

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