THIOARYL SUBSTITUTED INHIBITORS OF ZINC PROTEASES AND THEIR USE
申请人:Rossello Armando
公开号:US20090239829A1
公开(公告)日:2009-09-24
There are described compounds having the general formula (I) below and their pharmaceutically acceptable salts thereof, wherein E, X, m, q, R
1
, R
2
, n and ZBG have the meanings reported in the description useful, in therapy, as inhibitors of zinc metalloproteinases.
Practical, metal-free remote heteroarylation of amides <i>via</i> unactivated C(sp<sup>3</sup>)–H bond functionalization
作者:Nana Tang、Xinxin Wu、Chen Zhu
DOI:10.1039/c9sc02564b
日期:——
heteroarylation of amides via C(sp3)–Hbondfunctionalization. Amidyl radicals are directly generated from the amide N–H bonds under mild conditions, which trigger the subsequent 1,5-HAT process. A wide scope of aliphatic amides including carboxamides, sulfonamides, and phosphoramides are readily modified at remoteC(sp3)–H bonds by installing diverse heteroaryl groups. Borne out of pragmatic consideration
Photoinduced C(sp<sup>3</sup>)–H chlorination of amides with tetrabutyl ammonium chloride
作者:Yanshuo Zhu、Wei Yu
DOI:10.1039/d1ob02081a
日期:——
developed for the site-selective C(sp3)–H chlorination of amides with tetrabutyl ammonium chloride as the chlorinating agent. The reaction features a tandem sequence that involves a (diacetoxyiodo)benzene-mediated and chloride anion-involved N–H chlorination followed by photoinitiated chlorineatom transfer. A wide variety of carboxamides and sulfonamides were chlorinated at the δ-position by using this method
Photoredox-Mediated Remote C(sp<sup>3</sup>)–H Heteroarylation of <i>N</i>-Alkyl Sulfonamides
作者:Zhiqiang Deng、Guo-Xing Li、Gang He、Gong Chen
DOI:10.1021/acs.joc.9b02502
日期:2019.12.20
heteroarylation of sulfonyl-protected primary aliphaticamines with N-heteroarenes under photoredox-catalyzed conditions was developed. The reaction typically uses a slight excess of amine reactant. The use of benziodoxole acetate (BI-OAc) oxidant and hexafluoroisopropanol solvent is critical to achieve high yield. Besides methylene C-H bonds, heteroarylation reactions of δ methyl C-H bonds also worked under
Photoinduced Site-Selective C(sp<sup>3</sup>)–H Chlorination of Aliphatic Amides
作者:Yanshuo Zhu、Jingcheng Shi、Wei Yu
DOI:10.1021/acs.orglett.0c03297
日期:2020.11.20
Herein, we report a newphotochemical method for C(sp3)–H chlorination of amides which employs tert-butyl hypochlorite as the chlorinating agent and a household compact fluorescent lamp as the light source. The reaction proceeds via N-heterocyclic carbene SIPr·HCl-promoted N–H chlorination and subsequent photoinduced Hofmann–Löffler–Freytag chlorine atom transfer. The latter process is facilitated