Metal-, Photocatalyst-, and Light-Free, Late-Stage C–H Alkylation of Heteroarenes and 1,4-Quinones Using Carboxylic Acids
作者:Daniel R. Sutherland、Marcos Veguillas、Conor L. Oates、Ai-Lan Lee
DOI:10.1021/acs.orglett.8b02988
日期:2018.11.2
Contrary to the accepted convention, this work shows that Minisci-type C–Halkylation does not require any metal, photocatalyst, light, or prefunctionalization of the readily available and inexpensive carboxylic acids to proceed well under mild conditions. These mild conditions can be utilized for late-stage alkylations of complex molecules, including pharmaceutical compounds and light-sensitive compounds
A photochemical benzylation of protonated quinolines was realized by single electron transfer (SET) to the excited state of the quinoline from the aromatic reactant. The benzylated product is formed by cross-coupling between the benzyl radical and the heterocyclic radical when they are in close proximity to one another. This allows the formation of products which are, to the best of our knowledge, unaccessible in other ways and which have now been obtained for the first time. (C) 2010 Elsevier B.V. All rights reserved.
MINISCI, F.;VISMARA, E.;MORINI, G.;FONTANA, F.;LEVI, S.;SERRAVALLE, M.;GI+, J. ORG. CHEM., 1986, 51, N 4, 476-479
[EN] beta -SULFONE DERIVATIVES AS INHIBITORS OF MATRIX METALLOPROTEINASES AND/OR TNF- alpha CONVERTING ENZYME (TACE)<br/>[FR] DERIVES DOLLAR G(B)-SULFONE UTILISES COMME INHIBITEURS DE METALLOPROTEINASES MATRICIELLES ET/OU ENZYME DE CONVERSION DE TNF- DOLLAR G(A) (TACE)
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2003040103A1
公开(公告)日:2003-05-15
The present application describes novel β-sulfone derivatives of formula (I), or pharmaceutically acceptable salt or prodrug forms thereof, wherein R?1, R2, R3, R4, R5¿, X, Y, Z, and Za are defined in the present specification, which are useful as inhibitors of matrix metalloproteinases (MMP), TNF-α converting enzyme (TACE), aggrecanase, or a combination thereof.