NHC-Catalyzed Spiro Bis-Indane Formation via Domino Stetter−Aldol−Michael and Stetter−Aldol−Aldol Reactions
摘要:
Two novel domino NHC-catalyzed spirocyclizations are described herein, enabling the rapid construction of three new carbon-carbon bonds and a quaternary center with high diastereoselectivity. A variety of Spiro bis-indane structures are assembled in a single step from simple o-phthaldialdehyde derivatives.
skeletons has been explored. Under UV-light irradiation, o-divinylbenzenes underwent a pericyclic reaction to form the cyclic o-quinodimethane intermediates which were subsequently reacted with olefins through [4+2] addition to construct the benzobicyclo[2.2.2]octane skeletons in mild conditions. Gram scale reactions demonstrated the synthetic potential application of this protocol.
Assessment of the regioselectivity in the condensation reaction of unsymmetrical o -phthaldialdehydes with alanine
作者:Agathe C.A. D'Hollander、Nicholas J. Westwood
DOI:10.1016/j.tet.2017.11.035
日期:2018.1
context of the use of o-phthaldialdehydes that contain additional substituents in the aromatic ring leading to a detailed analysis of the regioselectivity of the reaction. Eleven monosubstituted o-phthaldialdehydes were synthesised and reacted with alanine. The regioselectivity observed across the eleven substrates led to the design of a disubstituted substrate that reacted with very high control. A gram-scale
CYCLIC PEPTIDE ANALOGS OF MELANOCORTIN AND AMANITIN AND METHODS OF MAKING SUCH
申请人:THE UNIVERSITY OF BRITISH COLUMBIA
公开号:US20210024605A1
公开(公告)日:2021-01-28
The invention described herein is based in part on the discovery of a protein/peptide crosslink, which introduces fluorescent properties, and which has been applied to synthesize analogues of melanocortin and amanitin as choice peptides to be explored in the context of isoindole peptides. Without limitation, it is expected that those trained in the art of peptide synthesis and stapling would appreciate the consequences of this invention such that other peptides of varied length can be similarly constrained by isoindole staples as featured herein.
Fluorescent Isoindole Crosslink (FlICk) Chemistry: A Rapid, User‐friendly Stapling Reaction
作者:Mihajlo Todorovic、Katerina D. Schwab、Jutta Zeisler、Chengcheng Zhang、Francois Bénard、David M. Perrin
DOI:10.1002/anie.201906514
日期:2019.10
drugs. Inspired by indole-derived crosslinks found in natural peptide toxins, we employed ortho-phthalaldehydes to create isoindole staples, thus transforming inactive linear and monocyclic precursors into bioactive monocyclic and bicyclic products. Mild, metal-free conditions give an array of macrocyclic α-melanocyte-stimulating hormone (α-MSH) derivatives, of which several isoindole-stapled α-MSH analogues
The present invention relates to soluble epoxide hydrolase (sEH) inhibitors of formula (I)
to processes for their obtention and to their therapeutic indications.