4-SUBSTITUTED COUMARIN DERIVATIVES AND PREPARATION METHODS AND USES THEREOF
申请人:CHEN Lijuan
公开号:US20180282315A1
公开(公告)日:2018-10-04
The present invention pertains to the field of chemical medicine, particularly to 4-substituted coumarin derivatives and preparation methods and applications thereof. The invention provides 4-substituted coumarin derivatives with a structural formula as shown in Formula I. The invention also provides preparation methods and applications for the above 4-substituted coumarin derivatives. The compounds provided in the invention have strong anti-tumor activity with IC50 for plural tumor cell lines between 0.01-5 nM, and it also performs better to inhibit microtubule polymerization and has diversified biological activities and low toxicity, providing new options for drug-sensitive and drug-resistant tumor cells.
Penicillin Acylase-Mediated Synthesis of 2-Acetyl-1-pyrroline and of 2-Propionyl-1-pyrroline, Key Roast-Smelling Odorants in Food. Inclusion Complexes with β-Cyclodextrin and Their NMR and MS Characterization
作者:Tito Fabrizio Favino、Giovanni Fronza、Claudio Fuganti、Daniela Fuganti、Piero Grasselli、Andrea Mele
DOI:10.1021/jo961474c
日期:1996.1.1
The synthesis of the strong natural roast odorants 1 and 2 is achieved from the C-6 isomeric alcohols 16 and 21 via the acetylenic C-6 and C-7 amines 8 and 9. Key step in the process is the hydrolysis of the N-phenylacetamides 12 and 13 by means of immobilized penicillin acylase, which affords the 1-amino-4,5-diketones 14 and 15, spontaneously ring closing to 1 and 2. These latter compounds form inclusion
Highly selective formation and ring fission of some cyclobutaquinolizidinones and cyclobutaindolizidinones
作者:George Adamson、Athelstan L. J. Beckwith、Michael Kaufmann、Anthony C. Willis
DOI:10.1039/c39950001783
日期:——
Intramolecular photochemical cycloaddition in N-alkenoyldihydropydinones or 3-acetyl-N-alkenoyltetrahydropydines is highly diastereoselective and affords substituted Cyclobutaquinolizidinones and cyclobutaindolizidinones, suitable derivatives of which undergo highly regioselective radical ring opening of the cyclobutane ring.
The invention provides compounds of formula (I) for selectively inhibiting glycosidases, prodrugs of the compounds, and pharmaceutical compositions including the compounds or prodrugs of the compounds The invention also provides methods of treating diseases and disorders related to deficiency or overexpression of O-GlcNAcase, accumulation or deficiency of O-GlcNAc