Abstract：
:We have previously reported that rhodacyanine dyes, such as 1 and 2, exhibited a potent inhibitory effect on the growth of several tumor cells and that 4-oxothiazolidine (rhodanine) was an essential moiety for antitumor activity. On the basis of our foregoing work, two types of rhodacyanine dyes, which categorized into class I and II depending on the methine length, were synthesized and evaluated as a novel antitumor agent. Attention was particularly focused on the structure-activity study of two heteroaromatic rings. In class I, where the A rings were conjugated to rhodanine via two methine groups, compounds 1, 20, 23, and 24 were found to be efficacious in tumor-bearing nude mice model study, but they did not have the chemical properties (stability, solubility) suitable for clinical use. In contrast, in class II, where the A rings were directly conjugated to rhodanine, compounds 13 and 25, which possessed a benzothiazole moiety for the A ring, exhibited the favorable biological and chemical properties. Therefore, we decided to have a benzothiazole moiety as the A ring and introduce various heterocyclic groups for the B ring. As a result, the pyridinium ring was selected as the optimal moiety for the B ring (compound 13). Further, the variation of counteranion had a profound effect on solubility in water without influence on antitumor activity. Chloride anion was selected as the favorable anion with respect to synthetic method as well as solubility in water. Our study finally led us to the identification of compound 3 (MKT 077, 1-ethyl-2-[[3-ethyl-5-(methylbenzothiazolin-2-ylidene)-4-oxothi azolidin-2 -ylidene]methyl]pyridinium chloride) as the candidate for clinical trials and is currently subjected to further investigation as a potent antitumor agent in phase I clinical trial for the treatment of solid tumors.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Kawakami M,Koya K,Ukai T,Tatsuta N,Ikegawa A,Ogawa K,Shishido T,Chen LBdoi
10.1021/jm970590ksubject
Has Abstractpub_date
1998-01-01 00:00:00pages
130-42issue
1eissn
0022-2623issn
1520-4804pii
jm970590kjournal_volume
41pub_type
杂志文章abstract：:A series of new 5-(1-hydroxy-2-haloethyl)-2'-deoxyuridines (3, 6, 8) were synthesized in 60-70% yields by addition of HOX (X = Br, Cl, I) to the vinyl substituent of the respective 5-vinyl-2'-deoxyuridines (2, 5, 7). Treatment of 3a,b with methanolic sulfuric acid afforded the corresponding 5-(1-methoxy-2-haloethyl)-2...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm00125a003
更新日期：1989-05-01 00:00:00
abstract：:N,N-Dialkylated leucine enkephalin analogues containing melphalan (Mel) in place of Phe4 were synthesized as potentially irreversible antagonists of the delta opioid receptor. These compounds, along with the corresponding Phe4 peptides, were tested for both agonist and antagonist activity in the GPI and MVD smooth mus...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm00392a025
更新日期：1987-09-01 00:00:00
abstract：:Previously, vibsanin B (ViB) was found to preferentially target HSP90β compared to HSP90α. In this study, multiple experiments, including pull-down assays of biotin-ViB with recombinant HSP90β-NTD, MD, CTD, and full-length HSP90β, molecular docking of ViB and its derivatives to the HSP90 CTD, and a inhibition assay of...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/acs.jmedchem.7b01395
更新日期：2017-11-09 00:00:00
abstract：:A variety of N-(phenylsulfonyl)-N-phenylglycines 5, N-(phenylsulfonyl)-2-phenylglycines 6, and N-(phenylsulfonyl)anthranilic acids 7 were prepared as analogues of the N-(phenylsulfonyl)glycine 1 aldose reductase inhibitors. In the rat lens assay, several derivatives of 5 display greater inhibitory activity than the co...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm00121a027
更新日期：1989-01-01 00:00:00
abstract：:An array of cis-, trans-, and dihydrostilbenes and some N-arylbenzylamines were synthesized and evaluated for their cytotoxicity in the five cancer cell cultures A-549 lung carcinoma, MCF-7 breast carcinoma, HT-29 colon adenocarcinoma, SKMEL-5 melanoma, and MLM melanoma. Several cis-stilbenes, structurally similar to ...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm00112a036
更新日期：1991-08-01 00:00:00
abstract：:As part of our studies to develop novel retinoids with increased affinity and selectivity for the retinoid X receptor (RXR) subfamily, we have designed and synthesized a series of (E,E,E)-7-(1,2,3, 4-tetrahydroquinolin-6-yl)-7-alkyl-6-fluoro-3-methylhepta-2, 4, 6-trienoic acid derivatives. These tetrahydroquinolines, ...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm980058c
更新日期：1998-08-13 00:00:00
abstract：:A C-4 hydroxylated metabolite (2, 3,3-dimethyl-3,4-dihydroisoquinolin-4-ol N-oxide) of the previously described cyclic nitrone free radical trap 1 (3,3-dimethyl-3,4-dihydroisoquinoline N-oxide, a cyclic analog of phenyl-tert-butylnitrone (PBN)) was isolated, identified, and synthesized. The metabolite (2), though a le...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm960244n
更新日期：1996-12-06 00:00:00
abstract：:Reaction of 1-(S)-[3-hydroxy-2-(phosphonomethoxy)propyl]-5-azacytosine (1) with dicyclohexylcarbodiimide and N,N,-dicyclohexyl-4-morpholinocarboxamidine in dimethylformamide at elevated temperature afforded the corresponding cyclic phosphonate 2, that is, 1-{[(5S)-2-hydroxy-2-oxido-1,4,2-dioxaphosphinan-5-yl]methyl}-5...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm0707166
更新日期：2007-11-15 00:00:00
abstract：:Upon the basis of The Cancer Genome Atlas (TCGA) data set, we identified that several autophagy-related proteins such as AMP-activated protein kinase (AMPK) were remarkably downregulated in breast cancer. Combined with coimmunoprecipitation assay, we demonstrated that BRD4 might interact with AMPK. After analyses of t...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/acs.jmedchem.7b00275
更新日期：2017-12-28 00:00:00
abstract：:The aim of this work was to obtain photoactivatable nonpeptide antagonists of the angiotensin II AT(1) receptor. Based on structure-function relationships, two chemical structures as well as appropriate synthetic schemes were chosen as a frame for the design of radiolabeled azido probes. The feasibility of the strateg...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm991050l
更新日期：1999-11-04 00:00:00
abstract：:The neutral endopeptidase inhibitor (2R)-2-[(1-{[(5-ethyl-1,3,4-thiadiazol-2-yl)amino]carbonyl}cyclopentyl)methyl]pentanoic acid 2 is metabolized to acyl glucuronide 3. Unprecedentedly, at pH 7.4, 3 does not undergo the O-acyl migration characteristic of acyl glucuronides but rapid, eliminative cyclization (t1/2 at 37...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm0706766
更新日期：2007-11-29 00:00:00
abstract：:Caveolin-1 is a target for academic and pharmaceutical research due to its many cellular roles and associated diseases. We report peptide WL47 (1), a small, high-affinity, selective disrupter of caveolin-1 oligomers. Developed and optimized through screening and analysis of synthetic peptide libraries, ligand 1 has 75...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/acs.jmedchem.5b01536
更新日期：2016-04-28 00:00:00
abstract：:An aminomethylthiazole pyrazole carboxamide lead 3 with good in vitro antiplasmodial activity [IC(50): 0.08 μM (K1, chloroquine and multidrug resistant strain) and 0.07 μM (NF54, chloroquine sensitive strain)] and microsomal metabolic stability was identified from whole cell screening of a SoftFocus kinase library. Co...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm201108k
更新日期：2011-11-10 00:00:00
abstract：:Glucose-dependent insulinotropic polypeptide (GIP) is a physiological insulin releasing peptide. We have developed two novel fatty acid derivatized GIP analogues, which bind to serum albumin and demonstrate enhanced duration of action in vivo. GIP(Lys(16)PAL) and GIP(Lys(37)PAL) were resistant to dipeptidyl peptidase ...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm0509997
更新日期：2006-02-09 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：:The preparation of 6-chloro-5-(cyclopentylmethyl)indan-1-carboxylic acid is described. This acid has good anti-inflammatory and analgesic activities without producing irritation in the gastrointestinal tract up to the highest tested dose. ...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm00369a033
更新日期：1984-03-01 00:00:00
abstract：:Efforts were made to improve a series of potent dual ABL/SRC inhibitors based on a 7-azaindole core with the aim of developing compounds that demonstrate a wider activity on selected oncogenic kinases. Multi-targeted kinase inhibitors (MTKIs) were then derived, focusing on kinases involved in both angiogenesis and tum...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/acs.jmedchem.6b00087
更新日期：2016-04-28 00:00:00
abstract：:Both in vitro and in vivo metabolism studies suggested that 5-(2,8-bis(trifluoromethyl)quinolin-4-yloxymethyl)isoxazole-3-carboxylic acid ethyl ester (compound 3) with previously reported antituberculosis activity is rapidly converted to two metabolites 3a and 3b. In order to improve the metabolic stability of this se...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm900340a
更新日期：2009-11-26 00:00:00
abstract：:A number of 7-amino and 7-acylamino substituted 4,4a-dihydro-5H-indeno[1,2-c]pyridazin-3-ones have been synthesized as rigid congeners of hypotensive 6-aryl-5-methyl-4,5-dihydro-3(2H)-pyridazinones and tested as antihypertensive, antithrombotic, antiulcer, and antiinflammatory agents. Unlike the previously described 7...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm00161a010
更新日期：1986-11-01 00:00:00
abstract：:A series of analogues of the dipeptide sweetener L-aspartyl-L-phenylalanine methyl ester having hydroxy and/or methoxy substitution on the aromatic ring was synthesized and tasted. The introduction of a methoxy group in the para position of the aromatic ring of the peptide sweetener is crucial to the reduction or dest...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm00178a013
更新日期：1980-04-01 00:00:00
abstract：:The principle of bioisosterism-similarly shaped molecules are more likely to share biological properties than are other molecules-has long helped to guide drug discovery. An algorithmic implementation of this principle, based on shape comparisons of a single rule-generated "topomer" conformation per molecule, had been...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm990159q
更新日期：1999-09-23 00:00:00
abstract：:2,5-Bis(4-guanylphenyl)-1,3-oxazole, 2,5-bis(4-guanylphenyl)-1,3,4-oxadiazole and -1,3,4-thiadiazole, and 3,6-bis(4-guanylphenyl)pyridazine and several of their "cyclic guanyl" analogues have been synthesized. 2,5-Bis(4-guanylphenyl)-1,3-oxazole and -1,3,4-thiadiazole showed good activity, whithout acute toxicity, aga...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm00179a022
更新日期：1980-05-01 00:00:00
abstract：:A small series of compounds is described in which a narrow SAR has identified N,N-dimethyl-3,4-diphenyl-1H-pyrazole-1-propanamine, 3, as a potential antidepressant with reduced side effects. The isomeric N,N-dimethyl-4,5-diphenyl-1H-pyrazole-1-propanamine was completely inactive in the primary antidepressant screens. ...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm00380a020
更新日期：1985-02-01 00:00:00
abstract：:The previous paper reported on the synthesis and pharmacological evaluation of N-(6-amino-3-pyridyl)-N'-bicycloalkyl-N"-cyanoguanidine derivatives, from among which three compounds were selected as potent potassium-channel openers. In the present study, selected compounds were tested for antagonism of potassium-induce...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm00039a011
更新日期：1994-06-24 00:00:00
abstract：:A new class of acyclic adenosine analogues is described which exhibit broad-spectrum antiviral activity and are apparently targeted at S-adenosyl-L-homocysteine hydrolase. The compounds are all alkyl (i.e., methyl, ethyl, 1-propyl, 2-propyl, 1-butyl, 2-butyl, 2-methylpropyl, tert-butyl, 1-pentyl, 3-methylbutyl, 1-octy...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm00381a004
更新日期：1985-03-01 00:00:00
abstract：:C5-unsubstituted-C6-aryl-1,4-dihydropyridines were prepared by a CAN-catalyzed multicomponent reaction from chalcones, β-dicarbonyl compounds, and ammonium acetate. These compounds were able to block Ca(2+) entry after a depolarizing stimulus and showed an improved Cav1.3/Cav1.2 selectivity in comparison with nifedipi...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm500263v
更新日期：2014-05-22 00:00:00
abstract：:The synthesis and biological activity of a novel cyclic beta-sheet-type antimicrobial dehydropeptide based on gramicidin S (GS) is described. The GS analogue, containing two (Z)-(beta-3-pyridyl)-alpha,beta-dehydroalanine (DeltaZ3Pal) residues at the 4 and 4' positions (2), was synthesized by solution-phase methodologi...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm061051v
更新日期：2006-12-28 00:00:00
abstract：:1-beta-D-Arabinofuranosylthymine (aThy; ara-T) is a potent selective anti herpes simplex virus drug. Its anhydro analogue, 2,2'-anhydro-aThy, was shown to be 9-fold less active and at least 3-fold less toxic than aThy. This compound was relatively stable at physiological pH and in strong acid but was rapidly hydrolyze...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm00354a025
更新日期：1982-12-01 00:00:00
abstract：:The arachidonic acid metabolizing enzymes cyclooxygenase-2 (COX-2) and lipoxygenases (LOXs) have been found to be implicated in a variety of cancers, including prostate cancer. To develop new therapeutic treatments, it therefore seemed interesting to design dual COX-2/5-LOX inhibitors. We report here the synthesis and...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm0407761
更新日期：2004-12-02 00:00:00
abstract：:The intense intrinsic fluorescence emissions from several clinically relevant camptothecin drugs have been exploited in order to study the structural basis of drug binding to human serum albumin. Both HPLC and time-resolved fluorescence spectroscopic methodologies were employed to characterize the associations of camp...
journal_title：Journal of medicinal chemistry
pub_type： 杂志文章
doi：10.1021/jm00027a005
更新日期：1994-01-07 00:00:00
