Abstract:
:Selectivity of enzymatic and chemical methods for transesterifications of cytarabine with divinyl dicarboxylates was described. Catalysis by lipase acrylic resin from Candida antarctica (CAL-B) in acetone facilitated the single step synthesis of polymerizable 5'-O-acyl cytarabine derivatives in high yields, while the use of alkaline protease from Bacillus subtilis (subtilisin) in pyridine afforded the mixture products of 5'-O-acyl and 4-N-acyl cytarabine derivatives. Interestingly, polymerizable 4-N-acyl cytarabine vinyl derivatives can be selectively prepared by chemical transesterification in dioxane. The obtained series of cytarabine derivatives would be useful for a significant monomer for a polymeric anticancer drug.
journal_name
Bioorg Med Chem Lettjournal_title
Bioorganic & medicinal chemistry lettersauthors
Wang N,Chen ZC,Lu DS,Lin XFdoi
10.1016/j.bmcl.2005.06.011subject
Has Abstractpub_date
2005-09-15 00:00:00pages
4064-7issue
18eissn
0960-894Xissn
1464-3405pii
S0960-894X(05)00759-6journal_volume
15pub_type
杂志文章abstract::A novel class of 4-aryl-8-(2-hydroxy-2-phenyl-cyclohexyl)-2,8-diaza-spiro[4.5]decan-1- ones have been discovered and developed as potent and selective GlyT1 inhibitors. The molecules are devoid of activity at the GlyT2 isoform and display excellent selectivities against the mu-opioid receptor as well as the Nociceptin...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2006.05.058
更新日期:2006-08-15 00:00:00
abstract::Pretomanid (PA-824) is an important nitroimidazole antitubercular agent in late stage clinical trials. However, pretomanid is limited by poor solubility and high protein binding, which presents opportunities for improvement in its physiochemical properties. Conversely, the oxazolidinone linezolid has excellent physico...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2015.12.002
更新日期:2016-01-15 00:00:00
abstract::Chaetocin (1), a structurally complex epidithiodiketopiperazine (ETP) alkaloid produced by Chaetomium minutum, is a potent inhibitor of protein lysine methyltransferase G9a, which plays important roles in many biological processes. Here we present our synthetic investigations to identify a simple prototype G9a inhibit...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2012.11.087
更新日期:2013-02-01 00:00:00
abstract::The synthesis and SAR of a series of novel pyrazolo-quinazolines as potent and selective MPS1 inhibitors are reported. We describe the optimization of the initial hit, identified by screening the internal library collection, into an orally available, potent and selective MPS1 inhibitor. ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2011.05.122
更新日期:2011-08-01 00:00:00
abstract::The design and optimization of a novel isoxazole S(1) linker for renin inhibitor is described herein. This effort culminated in the identification of compound 18, an orally bioavailable, sub-nanomolar renin inhibitor even in the presence of human plasma. When compound 18 was found to inhibit CYP3A4 in a time dependent...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2012.03.014
更新日期:2012-04-15 00:00:00
abstract::The discovery of the potency-enhancing effect of 5-substitutions on the novel 2-arylindoles as nonpeptidyl GnRH receptor antagonists led to the identification of several analogues with high affinities on the GnRH receptor. The syntheses and SARs of these 5-substituted-2-arylindole analogues are reported. ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/s0960-894x(00)00708-3
更新日期:2001-02-26 00:00:00
abstract::Cyclic and linear lipopeptides, burkholdine analogues, were synthesized by conventional Fmoc-SPPS and cyclisation with DIPC/HOBt in the solution phase. Synthesized peptides were evaluated for antifungal activities with MIC values against Saccharomyces cerevisiae and Aspergillus oryzae. As a result, the stereochemistry...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2015.05.088
更新日期:2015-08-15 00:00:00
abstract::Structure-based design and synthesis of the 3,4'-bispyridinylethylene series led to the discovery of 3-isoquinolinylpyridine 13a as a potent PKB/Akt inhibitor with an IC(50) of 1.3nM against Akt1. Compound 13a shows excellent selectivity against distinct families of kinases such as tyrosine kinases and CAMK, and displ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2005.12.065
更新日期:2006-04-01 00:00:00
abstract::A series of SYK inhibitors based on the phenylamino pyrimidine thiazole lead 4 were prepared and evaluated for biological activity. Lead optimization provided compounds with nanomolar K(i)'s against SYK and potent inhibition in mast cell degranulation assays. ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2008.09.106
更新日期:2008-12-01 00:00:00
abstract::Substituted dihydroquinozalin-2-ones (1-16) have been synthesized easily by the use of copper-catalyzed coupling method. The reactions of 2-haloanilines with a variety of alpha-amino acids in the presence of copper (I) iodide gave corresponding 3-substituted dihydroquinozalin-2-ones in up to 86% yield. Some new quinox...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2009.06.007
更新日期:2009-08-01 00:00:00
abstract::The MAP kinase p38 plays a key role in the biosynthesis of the inflammatory cytokines TNF-alpha and IL-1. We have developed a novel series of potent p38 inhibitors that could lead to new methods of treatment for inflammatory diseases such as rheumatoid arthritis and inflammatory bowel disease. ...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/s0960-894x(98)00589-7
更新日期:1998-12-01 00:00:00
abstract::Pulvinone and several 3-fluoro-4-morpholino substituted pulvinone derivatives were synthesized in five steps from a common precursor, phenyl acetic acid. Most of synthetic morpholine substituted pulvinones showed inhibitory activity against Esherichia coli. For the first time, the inhibition of pulvinone and its deriv...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2012.11.090
更新日期:2013-02-01 00:00:00
abstract::The synthesis and biological evaluation of new potent opioid receptor-like 1 antagonists are presented. A structure-activity relationship (SAR) study of arylpyrazole lead compound 1 obtained from library screening identified compound 31, (1S,3R)-N-{[1-(3-chloropyridin-2-yl)-5-(5-fluoro-6-methylpyridin-3-yl)-4-methyl-1...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2009.04.116
更新日期:2009-07-01 00:00:00
abstract::The synthesis of bis-ortho-alkoxy-para-piperazinesubstituted-2,4-dianilinopyrimidines is described and their structure-activity-relationship to anaplastic lymphoma kinase (ALK) is presented. KRCA-0008 is selective and potent to ALK and Ack1, and displays drug-like properties without hERG liability. KRCA-0008 demonstra...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2013.08.090
更新日期:2013-11-15 00:00:00
abstract::Novel pyrano[4,3-b]pyran-5(4H)-one based small molecules were designed as potential inhibitors of sirtuins (i.e., yeast sir2, a homolog of human SIRT1). Elegant synthesis of these compounds was performed via a multi-step sequence consisting of MCR, Sandmeyer type iodination, Sonogashira type coupling followed by iodoc...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2013.05.014
更新日期:2013-07-15 00:00:00
abstract::Two substituted biaryl analogues of colchicine and combretastatin A4, readily available through a one-step, protecting group free Suzuki-Miyaura reaction were discovered to exhibit anticancer activity while simultaneously being of low cytotoxicity to noncancerous cell lines. The compounds were shown to initiate apopto...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2014.10.090
更新日期:2015-01-01 00:00:00
abstract::A novel series of amide derivatives of lomefloxacin were synthesized and evaluated for their topoisomerase I and II inhibitory activity as well as cytotoxicity against a panel of five human cancer cell lines. Of the compounds prepared compounds 9d and 9g exhibited strong inhibition against topoisomerase II at 100μM. I...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2013.03.037
更新日期:2013-05-15 00:00:00
abstract::Two series of novel gemcitabine-nucleoside analogue dimers were synthesized using the 'click' chemistry approach. In the first series of dimers (21-30), the nucleoside units were connected with a stable methyltriazole 4N-3'(or 5')C linker whereas in the second series (31-40) with a cleavable ester-methyltriazole 4N-3'...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2019.08.003
更新日期:2019-09-15 00:00:00
abstract::In continuation of our efforts toward hit identification and optimization for a B-Raf kinase project, we have employed a scaffold hopping strategy. The original HTS hit scaffold pyrazolo[1,5-a]pyrimidine was replaced with different thienopyrimidine and thienopyridine scaffolds to append the optimal pharmacophore moiet...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2010.03.030
更新日期:2010-04-15 00:00:00
abstract::A series of 6-alkoxyisoindolin-1-ones with a magic shotgun pharmacological profile are presented as potential antipsychotics. The in vitro pharmacological profile includes D(2) partial agonism (30-55%), 5-HT(1A) partial agonism (60-90%), and 5-HT(2A) antagonism. Selected compounds in this series displayed good in vivo...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2010.08.023
更新日期:2010-10-01 00:00:00
abstract::Regioselective synthesis of a number of highly functionalized 3-benzylpyrimidino chromen-2-ones (4) were accomplished in a one pot three component reaction in acetic acid and determined their anti-microbial and anti-biofilm activities. Compounds 4o and 4p showed an excellent anti-microbial activity against Micrococcus...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2013.12.038
更新日期:2014-01-15 00:00:00
abstract::A series of thirty-seven 1,3,5-triazine analogues have been synthesized, characterized and evaluated for their antiproliferative activity against a panel of four different human cancer cell lines such as HeLa, HepG2, A549 and MCF-7. Most of the 1,3,5-triazine analogues exhibited promising antiproliferative activity ag...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2017.06.060
更新日期:2017-08-15 00:00:00
abstract::P21-activated kinase 1 (PAK1) plays a vital role in the proliferation, survival and migration of cancer cells, which has emerged as a promising drug target for cancer therapy. In this study, a series of 2-indolinone derivatives were designed and synthesized through a structure-based strategy. A potent PAK1 inhibitor (...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2020.127355
更新日期:2020-09-01 00:00:00
abstract::Ascorbic acid 2-glucoside (AA-2G) has been widely used in cream and lotion types of cosmetic products. Thus, the degradation of AA-2G caused by the temperature change and pH variation was very critical for determining the bio-functionality of cosmetics. Response surface methodology (RSM) was introduced to study the in...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2013.01.111
更新日期:2013-03-15 00:00:00
abstract::The oxidation reactions of 5-aminopyrimidine derivatives in dimethyl sulphoxide (DMSO) were studied. The DMSO solutions of the studied compounds became deeply coloured within a few hours or days. The oxidation products can undergo further condensation reactions with the starting pyrimidines to yield bipyrimidines and/...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2012.08.065
更新日期:2012-10-15 00:00:00
abstract::Arenobufagin is a naturally occurring bufadienolide showing promising antitumor activity accompanied however with apparent cardiac toxicity. Following the recent discovery that oxidative damage possibly be an important cause of the cardiac toxicity of cardenolides, a strategy fusing the antitumor agent arenobufagin wi...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2018.08.038
更新日期:2018-11-01 00:00:00
abstract::A series of lobelane and GZ-793A analogues that incorporate aromatic 4-hydroxy and 4-(2-fluoroethoxy) substituents were synthesized and evaluated for inhibition of [(3)H]dopamine (DA) uptake at the vesicular monoamine transporter-2 (VMAT2) and the dopamine transporter (DAT), and [(3)H]serotonin uptake at the serotonin...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2016.03.119
更新日期:2016-05-15 00:00:00
abstract::The structure-activity relationships of new Aurora A/B kinase inhibitors derived from the previously identified kinase inhibitor 12 are described. Introduction of acetic acid amides onto the pyrazole of compound 12 was postulated to influence Aurora A/B selectivity and improve the profile against off-target kinases. T...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2012.03.051
更新日期:2012-05-15 00:00:00
abstract::Amyloid-β (Aβ) deposition and oxidative stress observed in the brains of patients with Alzheimer's disease (AD) are important targets for therapeutic intervention. In this study, we conjugated the antioxidants caffeic acid (CA) and dihydrocaffeic acid (DHCA) to Aβ1-42 C-terminal motifs (Aβx-42: x=38, 40) to synthesize...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2016.10.027
更新日期:2016-11-15 00:00:00
abstract::A dynamic target-based pharmacophoric model mapping the CD4 binding site on HIV-1 gp120 was built and used to identify new hits able to inhibit gp120-CD4 protein-protein interactions. Two compounds showed micromolar inhibition of HIV-1 replication in cells attributable to an interference with the entry step of infecti...
journal_title:Bioorganic & medicinal chemistry letters
pub_type: 杂志文章
doi:10.1016/j.bmcl.2009.09.029
更新日期:2009-11-01 00:00:00