Naphthaquinopyrans 5a-d, 10 and 12 have been converted to benzoisochromene IIb via base-promoted air oxidation. A mechanism is proposed to account for the observed results. Use of peroxide scavenger was found necessary for consistent yields. IIb proved to be a versatile scaffold for diversity expansion. (C) 1998 Elsevier Science Ltd. All rights reserved.
(EN) Tricyclic heteronaphthoquinone derivatives, that have antineoplastic activity, are disclosed, together with processes for their synthesis. Some of these antineoplastic compounds have a saccharide moiety. Some members of this structurally distinct group exhibit activity against multiple drug resistant cancer cells.(FR) La présente invention concerne d'une part des dérivés tricycliques d'hétéronaphtoquinone à activité antinéoplasique et d'autre part les procédés de synthèse correspondants. Certains de ces composés antinéoplasiques comportent une fraction saccharide. Certains membres de ce groupe structurellement distinct font preuve d'une activité contre les cellules cancéreuses résistant à plusieurs médicaments.
Novel 1,3-disubstituted-5,10-dihydro-5,10-dioxo-1H-mbenzo[g]isochromene-3-carboxamides as potent antitumor agents
作者:Wuyi Wang、Tiechao Li、Robert Milburn、J. Yates、E. Hinnant、Micheal J. Luzzio、Stuart A. Noble、Giorgio Attardo
DOI:10.1016/s0960-894x(98)00274-1
日期:1998.7
Novel antitumor 5,10-dihydro-5,10-dioxo-1H-benzo[g]isochromene-3-carboxamides were discovered. (C) 1998 Elsevier Science Ltd. All rights reserved.