BETA-SUBSTITUTED BETA-AMINO ACIDS AND ANALOGS AS CHEMOTHERAPEUTIC AGENTS
申请人:QUADRIGA BIOSCIENCES, INC.
公开号:US20150218086A1
公开(公告)日:2015-08-06
β-Substituted β-amino acids, β-substituted β-amino acid derivatives, and β-substituted β-amino acid analogs and (bio)isosteres and their use as chemotherapeutic agents are disclosed. The β-substituted β-amino acid derivatives and β-substituted β-amino acid analogs and (bio)isosteres are selective LAT1/4F2hc substrates and exhibit rapid uptake and retention in tumors expressing the LAT1/4F2hc transporter. Methods of synthesizing the β-substituted β-amino acid derivatives and β-substituted β-amino acid analogs and methods of using the compounds for treating cancer are also disclosed. The β-substituted β-amino acid derivatives and β-substituted β-amino acid analogs exhibit selective uptake in tumor cells expressing the LAT1/4F2hc transporter and accumulate in cancerous cells when administered to a subject in vivo. The β-substituted β-amino acid derivatives and β-substituted β-amino acid analogs and (bio)isosteres exhibit cytotoxicity toward several tumor types.
BETA-SUBSTITUTED GAMMA-AMINO ACIDS AND ANALOGS AS CHEMOTHERAPEUTIC AGENTS
申请人:QUADRIGA BIOSCIENCES, INC.
公开号:US20150218085A1
公开(公告)日:2015-08-06
β-Substituted γ-amino acids, β-substituted γ-amino acid derivatives, and β-substituted γ-amino acid analogs and (bio)isosteres and their use as chemotherapeutic agents are disclosed. The β-substituted γ-amino acid derivatives and β-substituted γ-amino acid analogs and (bio)isosteres are selective LAT1/4F2hc substrates, capable of passing through the blood-brain barrier, and exhibit rapid uptake and retention in tumors expressing the LAT1/4F2hc transporter. Methods of synthesizing the β-substituted γ-amino acid derivatives and β-substituted γ-amino acid analogs and (bio)isosteres and methods of using the compounds for treating tumors are also disclosed. The β-substituted γ-amino acid derivatives and β-substituted γ-amino acid analogs and (bio)isosteres exhibit an improved selectivity toward tumor cells expressing the LAT1/4F2hc transporter and accumulate in cancerous cells when administered to a subject in vivo. The β-substituted γ-amino acid derivatives and β-substituted γ-amino acid analogs and (bio)isosteres exhibit an increased efficacy on a variety of tumor types.
Iron cyclopentadienone complexes derived from C<sub>2</sub>-symmetric bis-propargylic alcohols; preparation and applications to catalysis
作者:Roy Hodgkinson、Alessandro Del Grosso、Guy Clarkson、Martin Wills
DOI:10.1039/c5dt04610f
日期:——
A series of complexes containing the iron-cyclopentadienone structure were prepared by cyclising bis-propargylic alcohols and their derivatives with iron pentacarbonyl. The resulting complexes were characterised and tested in the catalysis of ketone reduction and alcohol oxidation. The complexes are competent catalysts for ketone reduction and alcohol oxidations.
<i>ansa</i>-Ruthenium(II) Complexes of R<sub>2</sub>NSO<sub>2</sub>DPEN-(CH<sub>2</sub>)<sub>n</sub>(η<sup>6</sup>-Aryl) Conjugate Ligands for Asymmetric Transfer Hydrogenation of Aryl Ketones
作者:Andrea Kišić、Michel Stephan、Barbara Mohar
DOI:10.1002/adsc.201500288
日期:2015.8.10
New 3rd generation designer ansa‐ruthenium(II) complexes featuring N,C‐alkylene‐tethered N,N‐dialkylsulfamoyl‐DPEN/η6‐arene ligands, exhibited good catalytic performance in the asymmetric transfer hydrogenation (ATH) of various classes of (het)aryl ketones in formic acid/triethylamine mixture. In particular, benzo‐fused cyclic ketones furnished 98 to >99.9% ee using a low catalyst loading.
Synthesis and applications to catalysis of novel cyclopentadienone iron tricarbonyl complexes
作者:Alessandro Del Grosso、Alexander E. Chamberlain、Guy J. Clarkson、Martin Wills
DOI:10.1039/c7dt03250a
日期:——
structures were prepared, in each case using the intramolecular cyclisation of a diyne as a key step. The complexes were generated as enantiomerically enriched through (i) asymmetric synthesis of a C2-symmetric diol following a reported protocol, (ii) resolution of enantiomerically-enriched diastereoisomers formed from a chiral alcohol and (iii) kinetic resolution of a racemic ketone-containing iron tricarbonyl