Facile and Efficient Oxidation of Quinazolines into Quinazolin-4(3H)-ones by Peracetic Acid
摘要:
A new approach to synthesize quinazoline-4(3H)-ones was achieved by oxidation of quinazolines using peracetic acid, which possesses some advantages of economic reagents, simplified operation, high efficiency, and environmental friendliness. Application of this method allowed us to synthesize a series of quinazolin-4(3H)-ones with different substituents at 6 and 7 positions in good to excellent yields, including the key intermediates of tyrosine kinase inhibitors such as PD153035, Erlotinib, and Gefitinib. [Supplementary materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) for the following free supplemental resource(s): Full experimental and spectral details.]
Facile and Efficient Oxidation of Quinazolines into Quinazolin-4(3H)-ones by Peracetic Acid
摘要:
A new approach to synthesize quinazoline-4(3H)-ones was achieved by oxidation of quinazolines using peracetic acid, which possesses some advantages of economic reagents, simplified operation, high efficiency, and environmental friendliness. Application of this method allowed us to synthesize a series of quinazolin-4(3H)-ones with different substituents at 6 and 7 positions in good to excellent yields, including the key intermediates of tyrosine kinase inhibitors such as PD153035, Erlotinib, and Gefitinib. [Supplementary materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) for the following free supplemental resource(s): Full experimental and spectral details.]
POLYCYCLIC QUINAZOLINES, PREPARATION THEREOF, AND USE THEREOF
申请人:Li Jianqi
公开号:US20110288086A1
公开(公告)日:2011-11-24
At least one active pharmaceutical ingredient is chosen from polycyclic quinazolines of formula V,
pharmaceutically acceptable salts thereof, and hydrates of the pharmaceutically acceptable salts. The active pharmaceutical ingredients disclosed may be inhibitors of protein tyrosine kinase inhibitors and/or aurora kinase. The active pharmaceutical ingredients can be used for treating cancers susceptible to treatment with protein tyrosine kinase inhibitors and/or aurora kinase inhibitors.
Antibodies directed to angiopoietin-2 and uses thereof
申请人:AstraZeneca AB
公开号:EP2284194A1
公开(公告)日:2011-02-16
Antibodies directed to the antigen Ang-2 and uses of such antibodies are described. In particular, fully human monoclonal antibodies directed to the antigen Ang-2. Nucleotide sequences encoding, and amino acid sequences comprising, heavy and light chain immunoglobulin molecules, particularly sequences corresponding to contiguous heavy and light chain sequences spanning the framework regions and/or complementary determining regions (CDRs), specifically from FR1 through FR4 or CDR1 through CDR3. Hybridomas or other cell lines expressing such immunoglobulin molecules and monoclonal antibodies.
Fused quinazoline derivatives and uses thereof as protein tyrosine kinase inhibitors and aurora kinase inhibitors are disclosed. Said protein tyrosine kinase inhibitors and aurora kinase inhibitors can be used in treating cancers, leukaemia and the diseases relevant to differentiation and proliferation. Said protein tyrosine kinase and aurora kinase dual inhibitors are the compounds represented by the following general formula or salts thereof.
A novel strategy to prepare 4-anilinoquinazoline derivatives based on the oxidation of the quinazoline ring is described. Quinazoline oxidation has been investigated and improved, thus leading to an efficient and high yielding method to quinazolin-4(3H)-ones. Efficiency of this approach has been evaluated synthesizing four well known tyrosine kinase inhibitors and comparing the obtained yields with those achievable through conventional synthetic methods. (C) 2009 Elsevier Ltd. All rights reserved.