Abstract:
:A convenient route is described for attachment of acyl groups CO(CH2)nN(Et)2(CH2)mNH(Et)2 (n = 3, m = 2; n = 4, m = 2-4), CO(CH2)nN(Et)2(CH2)mNEt3 (n = 4, m = 2-4), or CO(CH2)4N(CH2CH2)3N(CH2)nCH3 (n = 1 or 9) to O-3' of thymidine 5'-phosphate (TMP). The compounds are prototypes of 5'-nucleotide derivatives in which the two anionic charges could become partially masked in intramolecular anionic-cationic interactions and which might be able to diffuse into mammalian cells to furnish intracellular antimetabolite 5'-nucleotides by hydrolytic loss of a dicationic 3'-O-acyl group. At pH 7.6, 37 degrees C, hydrolyses of the 3'-ester linkages were pseudo first order with t1/2 values in the range 28-85 h. Paper chromatography in n-PrOH-H2O at pH 7.6 showed that type 1 or 2 derivatives were equally or slightly less hydrophobic than TMP (Rf 0.24), whereas the n-decyl type 3 compound (Rf 0.66) was markedly more hydrophobic, apparently because chain branching in group 3 is less than in 1 or 2. A sensitive and specific assay was developed for liberation of intracellular TMP in cultured mouse L fibroblasts in which synthesis of TMP and, hence, of DNA was suppressed by a combination of aminopterin and 5'-amino-5'-deoxythymidine (5'-NH2-dT). The TMP derivatives (100 microM) stimulated DNA synthesis, but omission of 5'-NH2-dT increased stimulation 6.5-fold, suggesting that stimulation occurred via degradation of the derivatives to dT. In confirmation, derivatives of type 2 (n = 4, m = 2 or 4) (100 microM) or type 3 (n = 9) (200 microM), in the presence of aminopterin, did not stimulate DNA synthesis in the LM(TK-) strain of L cells, which is genetically deficient in dT kinase. TMP (1 mM) stimulated DNA synthesis 2-3-fold and appeared to enter LM(TK-) cells without dephosphorylation, because dT (1 mM) gave no stimulation. If TMP is assumed to enter solely by passive diffusion, the inactivity of the TMP derivatives can be ascribed in part to their 2-fold higher molecular weight which can be expected to reduce flux through natural membranes ca. 16-fold.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Chawla RR,Freed JJ,Kappler F,Hampton Adoi
10.1021/jm00155a033subject
Has Abstractpub_date
1986-05-01 00:00:00pages
797-802issue
5eissn
0022-2623issn
1520-4804journal_volume
29pub_type
杂志文章abstract::Tropomyosin-related kinase A (TrkA) is considered a promising target in the development of a therapeutic treatment of cancer and pain. In this study, we designed and synthesized a series of novel 7-azaindole-based Trk kinase inhibitors through the structure-based design strategy. By varying the functional groups at th...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm3002982
更新日期:2012-06-14 00:00:00
abstract::A library of 3-hydroxy-2,3-dihydropyridones was synthesized, and their activities as antiandrogens were tested in the human prostate cancer cell line LNCaP. Structure-activity relationship (SAR) studies resulted in the identification of a potent compound whose activity is comparable to that of MDV3100. Homology modeli...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm301714s
更新日期:2013-11-14 00:00:00
abstract::Potent and selective inhibitors of Dyrk1B kinase were developed to explore the hypothesis, based on siRNA studies, that Dyrk1B may be a resistance mechanism in cells undergoing a stress response. ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.5b00098
更新日期:2015-03-26 00:00:00
abstract::We recently introduced sulfated pentagalloylglucopyranoside (SPGG) as an allosteric inhibitor of factor XIa (FXIa) (Al-Horani et al., J. Med Chem. 2013, 56, 867-878). To better understand the SPGG-FXIa interaction, we utilized eight SPGG variants and a range of biochemical techniques. The results reveal that SPGG's su...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm500311e
更新日期:2014-06-12 00:00:00
abstract::As a continuation of our efforts to develop innovative ligands for D(3), 5-HT(1A), and 5-HT(2A) receptors with low propensity to block hERG channels, we propose a series bishetero(homo)arylpiperazines 5a-m as novel and potent multifunctional ligands characterized by low occupancy at D(2) and 5-HT(2C) receptors. ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm100294b
更新日期:2010-06-24 00:00:00
abstract::Glucagon-like peptide 1 (GLP-1) and glucagon-like peptide 2 (GLP-2) are proglucagon derived peptides that are released from gut endocrine cells in response to nutrient intake. These molecules are rapidly inactivated by the action of dipeptidyl peptidase IV (DPP-4) which limits their use as therapeutic agents. The rece...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章,评审
doi:10.1021/acs.jmedchem.9b00835
更新日期:2020-02-13 00:00:00
abstract::Avermectins A2a, B1a, and B2a (1, 2, and 3) were acetylated to give 4"- and 23-acetates 4 and 5 and 4",23-diacetate 6 from 1, the 4"-and 5-acetates 7 and 8 and 4",5-diacetate 9 from 2, and triacetate 10 from 3. Structure proof by 300-MHz 1H NMR and mass spectral fragmentation is discussed for 10. Forcing acetylation c...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00348a010
更新日期:1982-06-01 00:00:00
abstract::Using reported glutathione S-transferase omega 1 (GSTO1-1) cocrystal structures, we designed and synthesized acrylamide-containing compounds that covalently bind to Cys32 on the catalytic site. Starting from a thiazole derivative 10 (GSTO1-1 IC50 = 0.6 μM), compound 18 was synthesized and cocrystallized with GSTO1. Mo...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.8b01960
更新日期:2019-03-28 00:00:00
abstract::4,4-Ditritio-(-)-nicotine (5) of high specific activity (4.7 Ci/mmol) has been synthesized from (-)-nicotine via the readily prepared 4,4-dibromocotinine (3). Scatchard analysis of the binding of 5 to the crude mitochondrial fraction of whole rat brain revealed a Ka of 4.7 X 10(6) M-1 and 13 fmol of binding sites/mg o...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00182a028
更新日期:1980-08-01 00:00:00
abstract::We recently described a number of inhibitors of P450(17 alpha), the key enzyme of androgen biosynthesis. Here, we report the synthesis and activity of novel 17-imidazolyl, pyrazolyl, and isoxazolyl androstene derivatives as potential agents for the treatment of prostatic cancer. A number of 17-(4'-Imidazolyl) derivati...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm970337k
更新日期:1997-09-26 00:00:00
abstract::Success in discovering bioactive peptide mimetics is often limited by the difficulties in correctly transposing known binding elements of the active peptide onto a small and metabolically more stable scaffold while maintaining bioactivity. Here we describe a scanning approach using a library of pyranose-based peptidom...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm1002777
更新日期:2010-08-12 00:00:00
abstract::We previously reported that [[N-[3beta-hydroxyllup-20(29)-en-28-oyl]-7-aminoheptyl]carbamoyl]methane (A43D, 4) was a potent HIV-1 entry inhibitor. However, 4 was inactive against HIV-2 virus, suggesting the structural requirements for targeting these two retroviruses are different. In this study, a series of new betul...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm9004253
更新日期:2009-12-10 00:00:00
abstract::8-Methoxy-1-oxo-2,3-dihydro-1H-cyclopenta]a]naphthalene (4) was converted to the oxalyl derivative (7) by treatment with diethyl oxalate in the presence of sodium ethoxide. Compound 7 in the form of the sodium salt was alkylated with ethyl bromoacetate in DMF to 2-(carbethoxymethyl)-8-methoxy-1-oxo-2,3-dihydro-1H-cycl...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00179a008
更新日期:1980-05-01 00:00:00
abstract::Esophageal adenocarcinoma (EAC) is a molecularly heterogeneous disease that is rising rapidly in incidence and has poor prognosis. We developed a heterobivalent peptide to target detection of early Barrett's neoplasia by combining monomer heptapeptides specific for either EGFR or ErbB2 in a heterodimer configuration. ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.8b00405
更新日期:2018-06-28 00:00:00
abstract::Alkylation-elimination of adenine and 2-amino-6-chloropurine with gem-difluorocyclopropane dibromide 10 gave E- and Z-methylene-gem-difluorocyclopropanes 11a, 11b, 12a, and 12b and gem-difluorocyclopropenes 13a and 13b. Debenzylation of intermediates 11a, 11b, 12a, and 12b afforded E- and Z-methylenecyclopropanes 4a, ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm010191w
更新日期:2001-11-08 00:00:00
abstract::In a previous study, we described affinity labeling of the lamb uterine estrogen receptor by 17 alpha-[(bromoacetoxy)alkyl/alkynyl]estradiols. However, the intrinsic receptor-alkylating activities of these compounds were probably very hampered by their poor hydrolytic stability in estrogen receptor-containing tissue e...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00013a011
更新日期:1995-06-23 00:00:00
abstract::A series of 5-substituted tetrahydroisoquinolines was synthesized via a 10-step linear synthesis to assess whether replacement of noscapine's southern isobenzofuranone with other moieties resulted in retained cytotoxic activity. One such molecule, 18g, bearing a para-methoxybenzyl functionality with N-ethylcarbamoyl s...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.8b00986
更新日期:2018-09-27 00:00:00
abstract::The goal of this study was to design paclitaxel (PTX)-monoclonal antibody (mAb) prodrug conjugates (PTXMAbs) with the ability to deliver therapeutically significant doses of the drug to the tumor while avoiding the previously observed solubility limitations of conjugates with PTX:mAb molar ratios of >3. New PTX conjug...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm900899g
更新日期:2010-01-28 00:00:00
abstract::The final stages of polio eradication are proving more difficult than the early phases, and the development of effective drugs and treatments is considered a priority; thus, the research is ongoing. A screening of our in-house chemical library against poliovirus Sabin strains led to the identification of compounds 5 a...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.8b01482
更新日期:2019-01-24 00:00:00
abstract::Three novel C-4 aziridine-bearing paclitaxel analogs, 3-5, have been synthesized during the course of our continuing effort at C-4 modification. The key step in the synthesis is the aziridine ring formation at the C-4 position via an intramolecular Mitsunobu reaction. The syntheses and the biological evaluation of the...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00012a029
更新日期:1995-06-09 00:00:00
abstract::SAH 51-641 (1) is a potent hypoglycemic agent, which acts by inhibiting hepatic gluconeogenesis. It is a prodrug of 4-(2, 2-dimethyl-1-oxopropyl)benzoic acid (2) and 4-(2, 2-dimethyl-1-hydroxypropyl)benzoic acid (3), which sequester coenzyme A (CoA) in the mitochondria, and inhibits medium-chain acyltransferase. 1-3 a...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm980438y
更新日期:1999-01-14 00:00:00
abstract::2-Phenylcyclopropylmethylamine (PCPMA) analogues have been reported as selective serotonin 2C agonists. On the basis of the same scaffold, we designed and synthesized a series of bitopic derivatives as dopamine D3R ligands. A number of these new compounds show a high binding affinity for D3R with excellent selectivity...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.9b01835
更新日期:2020-05-14 00:00:00
abstract::A series of nondimethylphenyl-diarylpyrimidines with much lower cytotoxicities than their dimethyl analogues were developed. Compound B13 with a difluorobiphenyl moiety showed the highest antiviral activity against WT, mutant strains, and RT. The hydrochloride form of B13 exhibited an improved water solubility of 5.6 ...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.9b01446
更新日期:2019-12-26 00:00:00
abstract::4,5-Diphenyl-2-oxazolenonanoic acid (18b) was synthesized and found to inhibit ADP-induced aggregation of human platelets with an IC50 of 2.5 microM. Acid 18b displaced [3H]iloprost from human platelet membranes in a concentration-dependent fashion, consistent with 18b inhibiting platelet function by acting as a prost...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00097a006
更新日期:1992-09-18 00:00:00
abstract::The amide functional group plays a key role in the composition of biomolecules, including many clinically approved drugs. Bioisosterism is widely employed in the rational modification of lead compounds, being used to increase potency, enhance selectivity, improve pharmacokinetic properties, eliminate toxicity, and acq...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章,评审
doi:10.1021/acs.jmedchem.0c00530
更新日期:2020-11-12 00:00:00
abstract::Dihydrofuro[3,4-c]pyridinones are the first class of small molecules reported to inhibit the cytolytic effects of the lymphocyte toxin perforin. A lead structure was identified from a high throughput screen, and a series of analogues were designed and prepared to explore structure-activity relationships around the cor...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm801063n
更新日期:2008-12-11 00:00:00
abstract::Structure-based strategy was employed to design flavonoid compounds to mimic the Bim BH3 peptide as a new class of inhibitors of the anti-apoptotic Bcl-2 proteins. The most potent compound, 4 (BI-33), binds to Bcl-2 and Mcl-1 with Ki values of 17 and 18 nM, respectively. Compound 4 inhibits cell growth in the MDA-MB-2...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm070383c
更新日期:2007-07-12 00:00:00
abstract::Notch is a membrane inserted protein activated by the membrane-inserted γ-secretase proteolytic complex. The Notch pathway is a potential therapeutic target for the treatment of renal diseases but also controls the function of other cells, requiring cell-targeting of Notch antagonists. Toward selective targeting, we h...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/acs.jmedchem.5b00912
更新日期:2015-10-22 00:00:00
abstract::Three-dimensional quantitative structure-activity relationship (3D-QSAR) models have been developed using comparative molecular field analysis (CoMFA) on a large data set (118 compounds) of diverse cyclic urea derivatives as protease inhibitors against the human immunodeficiency virus type 1 (HIV-1). X-ray crystal str...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm980369n
更新日期:1999-01-28 00:00:00
abstract::The inhibitory effect of 108 4,6-diamino-1,2-dihydro-2,2-dimethyl-1-(substituted-phenyl)-s-triazines on murine L5178Y tumor cells, resistant and sensitive to methotrexate (MTX), has been studied. From the pI50 values, quantitative structure-activity relationships have been formulated which show that the lipophilic tri...
journal_title:Journal of medicinal chemistry
pub_type: 杂志文章
doi:10.1021/jm00369a019
更新日期:1984-03-01 00:00:00