نتایج جستجو برای: 4h chromenes

تعداد نتایج: 6923  

Journal: :Microporous and Mesoporous Materials 2021

In this work, we report for the first time a new methodology eco-synthesis of 2-amino-4H-chromenes 1, from salycilaldehydes and cyano compounds, under solvent-free mild conditions, using amino-grafted MOFs as catalysts. The selected − commercial CuBTC MIL-100(Sc) previously synthetized in our laboratories can be easily functionalyzed with amines different nature showing notable differences thei...

Journal: :Chemical biology & drug design 2012
Mehdi Khoshneviszadeh Najmeh Edraki Ramin Miri Alireza Foroumadi Bahram Hemmateenejad

The apoptosis-inducing activity data of a series of 4-aryl-4H-chromenes based on three cell lines (human breast cancer cell line T47D, human non-smal cell lung cancer cell line H1299, and human colorectal cancer cell line DLD-1) have been subjected to quantitative structure-activity relationship (QSAR) analysis. A collection of chemometrics methods including multiple linear regression (MLR), fa...

Preparation of 4-aminiquinaldine grafted on silica-coated nano-Fe3O4 particles (Fe3O4@SiO2-AQ) as a novel retrievable heterogeneous nanocatalyst is described. This novel hybrid nanomaterial was applicated for the green synthesis of substituted 2-amino-4H-chromenes via the one-pot condensation reaction of an aldehyde, malononitrile ...

Journal: :Symmetry 2015
Isaac G. Sonsona Eugenia Marqués-López Raquel P. Herrera

The structural motif that results from the fusion of a benzene ring to a heterocyclic pyran ring, known as chromene, is broadly found in nature and it has been reported to be associated with a wide range of biological activity. Moreover, asymmetric organocatalysis is a discipline in expansion that is already recognized as a well-established tool for obtaining enantiomerically enriched compounds...

Journal: :Anticancer research 2017
Yoshiaki Sugita Koichi Takao Yoshihiro Uesawa Hiroshi Sakagami

Most current anticancer drugs have shown excellent therapeutic effects on human oral squamous cell carcinoma (OSCC), but they also produce potent cytotoxicity in normal oral keratinocytes. This review article summarizes our extensive research of tumor specificity and keratinocyte toxicity of nine groups of compounds synthesized in our laboratory. Among a total of 133 compounds, (E)-3-[2-(4-hydr...

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