WO2013053034A2 - Thiazacridines utilisées dans la thérapie anticancéreuse - Google Patents
Thiazacridines utilisées dans la thérapie anticancéreuse Download PDFInfo
- Publication number
- WO2013053034A2 WO2013053034A2 PCT/BR2012/000421 BR2012000421W WO2013053034A2 WO 2013053034 A2 WO2013053034 A2 WO 2013053034A2 BR 2012000421 W BR2012000421 W BR 2012000421W WO 2013053034 A2 WO2013053034 A2 WO 2013053034A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- acridin
- lpsf
- thiazolidine
- dione
- ylmethyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
- C07D277/02—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings
- C07D277/08—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
Definitions
- the present invention relates to the synthesis of specific N-acridine thiazolidine derivatives and their respective uses as drugs used in cancer therapy.
- Acridine derivatives are known to have a broad spectrum of biological activities, such as antimicrobial, antimalarial, antitripanosomal activities (BONSE et al., 1999, J. Med. Chem., V.42, n.26, p.5448-54) , leishmanicide (GIRAULT et al., 2000, J. Med. Chem., v.43, n.14, p.2646-54) and, above all, for their antineoplastic properties.
- the medicinal interest of acridines dates from 1888, but only in 1913 did these compounds begin to be used in medical practice when Browning discovered the bactericidal action of proflavin c and acriflavin b.
- Anticancer activity was first considered in 1920. Thereafter, various compounds, natural alkaloids or synthetic molecules, were tested as antitumor agents (DEMEUNYNCK et al., 2001, Curr. Pharm. Des., V.7, p. 1703-24).
- the cytotoxic properties of acridine compounds depend on their ability to intercalate between DNA base pairs and also to inhibit nucleic acid synthesis by blocking the action of the topoisomerase I and topoisomerase II enzymes (SURDON et al., 2001, Molecules, v.6, p.673-82). Therefore, these compounds exert their primary clinical effects by their ability to interfere with DNA function, either by inhibiting DNA replication or transcription.
- thiazacridine and imidazacridine derivatives that proved to be very effective in treating cancer.
- the synthetic route used by the same authors to obtain thiazacridine derivatives began with the oxidation of 9-methyl acridine prepared from diphenylamine to acridine-9-carboxaldehyde followed by a Knoevenagel-type condensation reaction. alkaline with ethyl cyanoacetate to obtain ethyl 2-cyano-acridin-9-yl-acrylate ester.
- thiazolidine part of the molecule was performed by benzylation of thiazolidine-2,4-dione with benzyl halides in alkaline medium.
- thiazacridine derivatives were obtained by an addition reaction with ethyl 2-cyano-acridin-9-yl-acrylate ester in the presence of piperidine (PITTA et al, 2002, PI 0203747-5, 2003, PCT / BR03 / 00128; PITTA et al., 2006, PI-0601827-0, PCT / WO 2007/109871 A2.
- the substances obtained according to this invention comprise a group of N-acridinic thiazolidine derivatives.
- Ethyl 2-cyano-acridin-9-yl-acrylate derivative (Figure 1) was used in condensation with 3-acridin-9-ylmethyl-thiazolidine-2,4-dione LPSF AA-1A ( Figure 2) to obtain bis-acridinium compound 3-acridin-9-ylmethyl-5-acridin-9-ylmethylene-thiazolidine-2,4-dione LPSF AA-2 ( Figure 3).
- the ⁇ / s-acridine derivative is obtained by heating 3- (acridin-9-yl-methyl) -thiazolidine-2,4-dione, dissolved in anhydrous ethanol in the presence of piperidine, with 2-cyano-acridin. Ethyl 9-yl-acrylate at a temperature of 80 ° C for 4 hours.
- HL60 leukemia
- MDA-MB 435 breast - human
- HCT-8 human - colon
- RPMI 1640 medium supplemented with 10% fetal bovine serum and 1% antibiotics, kept in an oven at 37 ° C and an atmosphere containing 5% CO 2 .
- Cells were plated at a concentration of 0.3 x 10 6 cells / 100 ⁇ L for suspended cells and 0.1 x 10 6 ⁇ 8 / 100 ⁇ for adhered cells.
- the various compounds were added at different concentrations, ranging from 0.39 - 25ug / mL for pure substances. They were incubated for 72 hours in a 5% CO 2 oven at 37 ° C. At the end of this, the plates were centrifuged and the supernatant removed. Then 200 ⁇ of MTT solution (tetrazolium salt) was added, and the plates were incubated for 3h. The absorbance was read after dissolution of the precipitate with DMSO in a 550nm plate photometer spectrum.
- MTT solution tetrazolium salt
- the compounds were diluted to a concentration of 5mg / mL. 100 ⁇ g / mL were tested in single concentration on the following SF295 (CNS) strains; HCT-8 (colon) and MDA-MB-435 (breast). The compounds were selected according to tumor growth inhibition percentage higher than 80% in the cell lines used (GI%> 80%). These compounds were tested for IC50 determination.
- cytotoxic activity was presented in table 1, which refers to proliferation inhibition (%) performed in duplicate by the MTT method for SF-295 (CNS), HCT-8 (colon carcinoma) and MDA-MB435 (melanoma) cells; doxorubicin was used as a positive control; Table 1 shows that values of 0 - 35% were considered (SA) - No Activity; 36 - 55% (PA) - Little Activity; 56 - 85% (MO) - Moderate Activity; 86 - 100% (MA) - Lots of Activity.
- the LPSF-AA2 derivative was the most active molecule in this series. All compounds show a selective cytotoxic potential for the HCT-8 cell line, with compound AA6 showing the highest cytotoxic potential for this cell line.
- the LPSF-AA6 compound with a bromine atom for substituted on the benzylidene ring, was also quite effective. It was the most active for the HCT-8 cell line and the second most active for the SF-295 and MDA-MB435 cell lines.
- LPSF-AA5 was the least active of all compounds synthesized against cell line HCT-8 and MDA-MB435.
- LPSF-AA2, LPSF-AA3 and LPSF-AA6 were selected for the determination of IC 5 o (Table 2), since they presented tumor growth inhibition percentage higher than 80% o in the used cell lines.
- IC50 values (50% inhibitory concentration) and 95% confidence interval (95% CI) performed by the MTT method for cells HL-60 (promyelocytic leukemia), CEM (lymphocytic leukemia), MDA-MB435 (melanoma), HCT-8 (colon carcinoma) and SF-295 (CNS) obtained by nonlinear regression using the GraphPad Prism program
- LPSF-AA2 had the best IC50 values: 4.4 ⁇ g / mL for MDA-MB435, 4.45 ⁇ g / mL for HCT-8, 7.01 ⁇ g / mL for SF-295 and values greater than 25 ⁇ g / mL for HL-60 and CEM, but still these values are very high when compared to doxorubicone.
- Figure 1 Representation of ethyl 2-cyano-acridin-9-yl-acrylate ester.
- Figure 2 Representation of the intermediate acridine molecule: 3-acridin-9-ylmethyl-thiazolidine-2,4-dione - LPSF AA-1 A.
- Figure 3 Representation of the ⁇ zs-acridine derivative 3-acridm-9-ylmethyl-5-acridin-9-ylmethylene-thiazolidine-2,4-dione - LPSF AA-2.
- Figure 4 - presents the general structure of seven of the nine synthesized derivatives.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
Abstract
La présente invention concerne des composés dérivés de la 3-acrydinylméthyl-thiazolidine-2,4-dione, également appelés thiazacridines, ainsi que leurs procédés respectifs de synthèse chimique et leur utilisation thérapeutique dans le traitement du cancer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI1106333 | 2011-10-10 | ||
| BRPI1106333-5 | 2011-10-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2013053034A2 true WO2013053034A2 (fr) | 2013-04-18 |
| WO2013053034A3 WO2013053034A3 (fr) | 2013-06-27 |
Family
ID=48082600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/BR2012/000421 Ceased WO2013053034A2 (fr) | 2011-10-10 | 2012-10-24 | Thiazacridines utilisées dans la thérapie anticancéreuse |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2013053034A2 (fr) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR0203747A (pt) * | 2002-09-10 | 2004-05-25 | Conselho Nacional Cnpq | Moléculas com atividade antitumoral e processo para a sua obtenção |
| BRPI0601827A (pt) * | 2006-03-24 | 2007-11-27 | Univ Fed Pernambuco | moléculas com atividade antitumoral |
-
2012
- 2012-10-24 WO PCT/BR2012/000421 patent/WO2013053034A2/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013053034A3 (fr) | 2013-06-27 |
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