Manipulation of N,O-Nucleophilicity: Efficient Formation of 4-N-Substituted 2,4-Dihydro-3H-1,2,4-Triazolin-3-ones
摘要:
A new efficient two-step synthesis of 2,4-dihydro-3H-1,2,4-triazolin-3-ones (triazolinones) from readily available amines is reported. Our novel conditions using hexamethyl disilazane, bromotrimethylsilane, and a catalytic amount of ammonium sulfate smoothly cyclize 1-formyl and 1-acetyl semicarbazides to the target triazolinones. This transformation features simultaneous manipulation of N- and O-nucleophilicity as well as differentiation of the nucleophilicity of a urea and an acyl carbonyl.
AMPHOTERICIN B DERIVATIVES WITH IMPROVED THERAPEUTIC INDEX
申请人:THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
公开号:US20160215012A1
公开(公告)日:2016-07-28
Provided are certain derivatives of amphotericin B (AmB) characterized by reduced toxicity and retained anti-fungal activity. Certain of the derivatives are C16 urea derivatives of AmB. Certain of the derivatives are C3, C5, C8, C9, C11, C13, or C15 deoxy derivatives of AmB. Certain of the derivatives include C3′ or C4′ modifications of the mycosamine appendage of AmB. Also provided are methods of making AmB derivatives of the invention, pharmaceutical compositions comprising AmB derivatives of the invention, and methods of use of AmB derivatives of the invention.
[EN] UREA DERIVATIVES OF AMPHOTERICIN B DERIVED FROM SECONDARY AMINES<br/>[FR] DÉRIVÉS D'URÉE DE L'AMPHOTÉRICINE B DÉRIVÉE D'AMINES SECONDAIRES
申请人:UNIV ILLINOIS
公开号:WO2016112243A1
公开(公告)日:2016-07-14
Provided are certain urea derivatives of amphotericin B (AmB) having improved therapeutic index compared to AmB. The compounds of the invention are less toxic than AmB and are useful to treat fungal infections. In certain embodiments the urea derivative of AmB is a compound represented by formula (I) or a pharmaceutically acceptable salt thereof: wherein, independently for each occurrence: R represents methyl, ethyl, propyl, or isopropyl; R' represents methyl, ethyl, propyl, or isopropyl; or R and R', taken together with the nitrogen atom to which they are attached, represent a radical of a cyclic secondary amine. Also provided are methods for making the urea derivatives of AmB.
[EN] CONCISE SYNTHESIS OF UREA DERIVATIVES OF AMPHOTERICIN B<br/>[FR] SYNTHÈSE CONCISE DE DÉRIVÉS D'URÉE D'AMPHOTÉRICINE B
申请人:UNIV ILLINOIS
公开号:WO2016112260A1
公开(公告)日:2016-07-14
Provided are certain derivatives of amphotericin B (AmB) characterized by reduced toxicity and retained anti -fungal activity. Certain of the derivatives are C16 urea derivatives and C16 carbamate derivatives of AmB. Also provided are methods of making the AmB derivatives.
[EN] HETEROARYL COMPOUNDS AND THEIR USE AS THERAPEUTIC DRUGS<br/>[FR] COMPOSÉS HÉTÉROARYLE ET LEUR UTILISATION COMME MÉDICAMENTS THÉRAPEUTIQUES
申请人:DONG-A SOCIO HOLDINGS CO LTD
公开号:WO2017039331A1
公开(公告)日:2017-03-09
The present invention provides heterocyclic compounds, the stereoisomer thereof, the enantiomer thereof, or the pharmaceutically acceptable salt, which are capable of modulating the activity of Mer receptor tyrosine kinase (MERTK). This invention also provides pharmaceutical compositions thereof, methods to prepare the said compounds, and the use of such compounds as a medicament. The present invention is directed to MERTK inhibitory compounds with marked potency, thereby having an outstanding potential for a pharmaceutical intervention of cancer and any other diseases related to MERTK dysregulation.
Tetrahydroindole and Tetrahydroindazole Derivatives
申请人:Huang Kenneth He
公开号:US20080269193A1
公开(公告)日:2008-10-30
The invention provides indole and indazole compounds of Formula (I)
or pharmaceutically acceptable salts thereof which are useful for treating and/or preventing diseases and/or disorders ameliorated by the inhibition of Heat-Shock Protein 90. The invention further provides pharmaceutical compositions comprising compounds of Formula (I) and methods of preparing compounds of Formula (I).