CuI-catalyzed intramolecular cyclization of 3-(2-aminophenyl)-2-bromoacrylate: synthesis of 2-carboxyindoles
摘要:
A new approach was described for the synthesis of substituted 2-carboxyindole using 3-(2-aminophenyl)-2-bromo-acrylates through a CuI-catalyzed intramolecular coupling. The reactions were mild, rapid and with good to excellent yields. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.
ROBBA M.; MAUME D.; LANCELOT J. C., J. HETEROCYCL. CHEM., 1977, 14, NO 8, 1365-1368
作者:ROBBA M.、 MAUME D.、 LANCELOT J. C.
DOI:——
日期:——
VERFAHREN ZUR HERSTELLUNG VON HETEROCYCLISCHEN CARBAMATEN AUS AZA-HETEROCYCLEN UND KOHLENDIOXID
申请人:GÖDECKE GMBH
公开号:EP1165511A2
公开(公告)日:2002-01-02
HYPOCRELLIN DERIVATIVE SUBSTITUTED BOTH IN A PERI-POSITION AND IN 2-POSITION BY AMINO, PREPARATION METHOD, AND APPLICATION THEREOF
申请人:TECHNICAL INSTITUTE OF PHYSICS AND CHEMISTRY OF THE CHINESE ACADEMY OF SCIENCES
公开号:US20210145968A1
公开(公告)日:2021-05-20
The present invention discloses a hypocrellin derivative substituted both in a peri-position and in a 2-position by an amino, and a preparation method and use thereof. A general structural formula of the derivative is as represented by formulas I-a to I-d:
The hypocrellin derivative substituted both in a peri-position and in a 2-position by an amino prepared in the present invention has a maximum absorption wavelength of 600-650 nm and a molar extinction coefficient reaching about 20000-40000 M
−1
cm
−1
. Compared with unmodified hypocrellin or hypocrellin having only a 2-position modified, an absorption spectrum of the derivative is significantly red-shifted and the molar extinction coefficient is greatly improved, and the derivative can efficiently produce reactive oxygen species such as singlet oxygen in a photosensitive condition. In the same condition, the hypocrellin derivative substituted both in a peri-position and in a 2-position by an amino involved in the present invention, when used as a photosensitizer, has a stronger ability to photo-dynamically inactivate tumor cells than the first and second generation commercial photosensitizers.