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.
Development of New HPLC Chiral Stationary Phases Based on Native and Derivatized Cyclofructans
作者:Ping Sun、Chunlei Wang、Zachary S. Breitbach、Ying Zhang、Daniel W. Armstrong
DOI:10.1021/ac902257a
日期:2009.12.15
An unusual class of chiral selectors, cyclofructans, is introduced for the first time as bonded chiral stationary phases. Compared to native cyclofructans (CFs), which have rather limited capabilities as chiral selectors, aliphatic- and aromatic-functionalized CF6s possess unique and very different enantiomeric selectivities. Indeed, they are shown to separate a very broad range of racemic compounds. In particular, aliphatic-derivatized CF6s with a low substitution degree baseline separate all tested chiral primary amines. It appears that partial derivatization on the CF6 molecule disrupts the molecular internal hydrogen bonding, thereby making the core of the molecule more accessible. In contrast, highly aromatic-functionalized CF6 stationary phases lose most of the enantioselective capabilities toward primary amines, however they gain broad selectivity for most other types of analytes. This class of stationary phases also demonstrates high “loadability” and therefore has great potential for preparative separations. The variations in enantiomeric selectivity often can be correlated with distinct structural features of the selector. The separations occur predominantly in the presence of organic solvents.
Preparation of α-(2,2-Diphenylhydrazino)lactones and Related Compounds by Radical Cyclization: Use of Glyoxylic Acid Hydrazone Derivatives
作者:Derrick L. J. Clive、Junhu Zhang、Rajendra Subedi、Virginie Bouétard、Sheldon Hiebert、Robert Ewanuk
DOI:10.1021/jo0013655
日期:2001.2.1
the corresponding O-benzyloxime (2b) are easily esterified in high yield by beta-bromo alcohols. The resulting esters undergo radical cyclization to alpha-(2,2-diphenylhydrazino)- or alpha-[(phenylmethoxy)amino]lactones on treatment with tributyltin hydride. Esters for radical cyclization were also made using a beta-(phenylseleno) alcohol and an enol ether. Several derivatives of glyoxylic acid were