The Suzuki-Miyaura reaction of 9-unsubstituted 2-, 6-, and 8-halopurine bases with diverse aryl- and alkenylboronic acids in water-acetonitrile mixtures under microwave irradiation was used for the single-step synthesis of arylpurines. In most cases the product crystallized directly from the reaction mixture in high yields and good purity. The scope and limitations of these reactions were studied.
[EN] FAP-TARGETED RADIOPHARMACEUTICALS AND IMAGING AGENTS, AND USES RELATED THERETO<br/>[FR] AGENTS D'IMAGERIE ET PRODUITS RADIOPHARMACEUTIQUES CIBLANT LA FAP, ET UTILISATIONS ASSOCIÉES
申请人:TUFTS COLLEGE
公开号:WO2021195198A1
公开(公告)日:2021-09-30
The tumor stroma, which accounts for a large part of the tumor mass, represents an attractive target for the delivery of diagnostic and therapeutic compounds. Here, the focus is notably on a subpopulation of stromal cells, known as cancer-associated fibroblasts, which are present in more than 90% of epithelial carcinomas, including pancreatic, colon, and breast cancer. Cancer-associated fibroblasts feature high expression of TAP, which is not detectable in adult normal tissue but is associated with a poor prognosis in cancer patients. The present invention provides small-molecule radiopharmaceutical and imaging agents based on a FAP-specific inhibitor.
A straightforward entry to chiral carbocyclic nucleoside analogues is achievedviathe enantioselective [3+2] cycloaddition of α-nucleobase substituted acrylates to vinyl cyclopropanes.
A rapid and divergent access to chiral azacyclic nucleoside analogues via highly enantioselective 1,3-dipolar cycloaddition of β-nucleobase substituted acrylates
A rapid and divergent access to chiral azacyclic nucleoside analogues was developed via enantioselective 1,3-dipolar cycloaddition of β-nucleobase substituted acrylates.
an-2-yl)purines 3-9, 6-(4-substituted phenyl)purines 10-16, 9-((4-substituted phenyl)sulfonyl)-6-(4-substituted phenyl)purines 17-32 were prepared and screened initially for their in vitro anticancer activity against selected human cancer cells (liver Huh7, colon HCT116, breast MCF7). 6-(4-Phenoxyphenyl) purineanalogues 9, 16, 30-32, had potent cytotoxic activities. The most active purine derivatives