scholarly journals Synthesis and potential cytotoxic activity of some new benzoxazoles, imidazoles, benzimidazoles and tetrazoles

2013 ◽  
Vol 63 (2) ◽  
pp. 253-264 ◽  
Author(s):  
Subramaniyan Arulmurugan ◽  
Helen P. Kavitha

2 The present work deals with the synthesis of some novel heterocyclic compounds such as benzoxazoles , 7, 13 and 19, imidazoles 3, 8, 14 and 20, benzimidazoles 4, 9, 15 and 21, and tetrazoles 10, 16, and 22. The synthesized compounds were characterized by IR, 1H NMR, mass spectrometry and elemental analysis. The compounds were evaluated for cytotoxicity against human cancer cell lines such as MCF-7 (breast cancer) and HT-29 (colon cancer) by the MTT assay method. Among the tested compounds, 4,4’-sulfonylbis(N-(2-(1H-benzo[d]imidazol- -2-yl)ethyl)aniline (9), N-bis(2-(benzo[d]oxazol-2-yl)-ethyl)- 6-phenyl-1,3,5-triazine-2,4-diamine (13), N-bis(2-(1H-benzo[ d]imidazol-2-yl)ethyl)-6-phenyl-1,3,5-triazine-2,4-diamine (15) and N-tris(2-1H-benzo[d]imidazol-2-yl)ethyl)- 1,3,5-triazine-2,4,6-triamine (21) showed potent cytotoxicity.

2020 ◽  
Vol 17 (5) ◽  
pp. 352-359 ◽  
Author(s):  
Bhukya Ravinaik ◽  
Dittakavi Ramachandran ◽  
Mandava Venkata Basaveswara Rao

A novel library of 1,2,4-oxadiazole bearing isoxazole-pyrazole derivatives (13a-j) were designed, synthesized and evaluated for their anticancer activity towards MCF-7 (breast cancer), A549 (lung cancer), DU-145 (prostate cancer) and MDA MB-231 (breast cancer) human cancer cell lines by MTT assay. Here etoposide used as standard drug. Among them, five compounds (13b, 13c, 13d, 13h and 13i) were exhibited more potent activity. In which compound 13h was the most promising compound against all cell lines MCF-7, A549, DU-145 and MDA MB-231.


2015 ◽  
Vol 10 (8) ◽  
pp. 1934578X1501000
Author(s):  
Pham Tuan Anh ◽  
Pham Thanh Ky ◽  
Nguyen Thi Cuc ◽  
Nguyen Xuan Nhiem ◽  
Pham Hai Yen ◽  
...  

Two new damarane- type saponins, named gylongiposides II-III (1 and 2), along with one known compound, (23 S)-3β,20ζ,21ζ-trihydroxy-19-oxo-21,23-epoxydammar-24-ene 3- O-α-L-rhamnopyranosyl-(1→2)-[β-D-xylopyranosyl-(1→3)]-α-L-arabinopyranoside, were isolated from the leaves of Gynostemma longipes C.Y.Wu. Their structures were determined by 1D- and 2D-NMR and HR-ESI-MS spectra. Compounds 1–3 exhibited moderate activity against four human cancer cell lines, A-549, HT-29, OVCAR, and MCF-7, with IC50 values ranging from 9.8 ± 2.1 to 49.6 ± 2.6 μM.


2020 ◽  
Vol 15 (9) ◽  
pp. 1934578X2095328
Author(s):  
Qi Ding ◽  
Dong-Mei Fang ◽  
Xiao-Huan Li ◽  
Feng Gao

Two new diterpenoids named 13-oxo-wollifoliane-10,15-olide (1) and 19-acetoxy-7,9,10-deacetyl-baccatin VI (2), along with 14 known taxanes (3-16), were isolated from Taxus baccata. The structures of these compounds were elucidated by 1-dimensional and 2-dimensional nuclear magnetic resonance spectra, high-resolution electrospray ionization-mass spectrometry, and infrared spectroscopy. Structurally, 13-oxo-wollifoliane-10,15-olide (1) is the first taxane diterpenoid possessing an unusual carbonyl group at the C-13 position of the 11(15→1),11(10→9)bis- abeo-taxane structure (5/6/6/6/4 skeleton), and 19-acetoxy-7,9,10-deacetyl-baccatin VI (2) is a new compound containing an acetoxy group at the C-19 position of 6/8/6/4-taxane. Among the 14 known taxane compounds 3-16, compounds 7 and 9 were first isolated and reported from T. baccata. Several compounds (3-16) were evaluated for cytotoxicity against MCF-7 and HCT116 human cancer cell lines, but none of them showed considerable cytotoxic activity.


RSC Advances ◽  
2016 ◽  
Vol 6 (19) ◽  
pp. 15286-15297 ◽  
Author(s):  
Manjunath G. Sunagar ◽  
Supreet Gaonkar ◽  
Santosh G. Sunagar ◽  
Narahari Deshapande ◽  
Ningaraddi S. Belavagi ◽  
...  

A series of N-9 substituted 6-(4-(4-propoxyphenyl)piperazin-1-yl)-9H-purine derivatives (PP05–PP21) were prepared and evaluated for their anticancer activity against a panel of human cancer cell lines.


2020 ◽  
Vol 17 (5) ◽  
pp. 345-351
Author(s):  
Syndla Premalatha ◽  
G. Rambabu ◽  
Islavathu Hatti ◽  
Dittakavi Ramachandran

A new series of 3-(3,4,5-trimethoxyphenyl)-5-(2-(5-arylbenzo[b]thiophen-3-yl)oxa zol-5- yl)isoxazole derivatives were designed and synthesized. All these derivatives were evaluated for their anticancer activity against various human cancer cell lines such as MCF-7 (breast cancer), A549 (lung cancer), DU-145 (prostate cancer) and MDA MB-231 (breast cancer)-four human cancer cell lines by using MTT assay. Here, etoposide was used as a standard reference drug and most of the compounds were exhibited good anticancer activity with respect to cell lines. Among all compounds, five compounds 11b, 11c, 11f, 11i and 11j showed more potent activity than standard drug, in which, compound 11f was the most promising compound.


Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3923
Author(s):  
Adel A.-H. Abdel-Rahman ◽  
Amira K. F. Shaban ◽  
Ibrahim F. Nassar ◽  
Dina S. EL-Kady ◽  
Nasser S. M. Ismail ◽  
...  

New pyridine, pyrazoloyridine, and furopyridine derivatives substituted with naphthyl and thienyl moieties were designed and synthesized starting from 6-(naphthalen-2-yl)-2-oxo-4-(thiophen-2-yl)-1,2-dihydropyridine-3-carbonitrile (1). The chloro, methoxy, cholroacetoxy, imidazolyl, azide, and arylamino derivatives were prepared to obtain the pyridine-−C2 functionalized derivatives. The derived pyrazolpyridine-N-glycosides were synthesized via heterocyclization of the C2-thioxopyridine derivative followed by glycosylation using glucose and galactose. The furopyridine derivative 14 and the tricyclic pyrido[3′,2′:4,5]furo[3,2-d]pyrimidine 15 were prepared via heterocyclization of the ester derivative followed by a reaction with formamide. The newly synthesized compounds were evaluated for their ability to in vitro inhibit the CDK2 enzyme. In addition, the cytotoxicity of the compounds was tested against four different human cancer cell lines (HCT-116, MCF-7, HepG2, and A549). The CDK2/cyclin A2 enzyme inhibitory results revealed that pyridone 1, 2-chloro-6-(naphthalen-2-yl)-4-(thiophen-2-yl)nicotinonitrile (4), 6-(naphthalen-2-yl)-4-(thiophen-2-yl)-1H-pyrazolo[3,4-b]pyridin-3-amine (8), S-(3-cyano-6-(naphthaen-2-yl)-4-(thiophen-2-yl)pyridin-2-yl) 2-chloroethanethioate (11), and ethyl 3-amino-6-(naphthalen-2-yl)-4-(thiophen-2-yl)furo[2,3-b]pyridine-2-carboxylate (14) are among the most active inhibitors with IC50 values of 0.57, 0.24, 0.65, 0.50, and 0.93 µM, respectively, compared to roscovitine (IC50 0.394 μM). Most compounds showed significant inhibition on different human cancer cell lines (HCT-116, MCF-7, HepG2, and A549) with IC50 ranges of 31.3–49.0, 19.3–55.5, 22.7–44.8, and 36.8–70.7 μM, respectively compared to doxorubicin (IC50 40.0, 64.8, 24.7 and 58.1 µM, respectively). Furthermore, a molecular docking study suggests that most of the target compounds have a similar binding mode as a reference compound in the active site of the CDK2 enzyme. The structural requirements controlling the CDK2 inhibitory activity were determined through the generation of a statistically significant 2D-QSAR model.


2021 ◽  
Vol 18 ◽  
Author(s):  
Sailu Betala ◽  
Chiranjeevi Abba ◽  
Hanumandlu Racha

Abstract: A series of novel amide and Schiffs base functionalized novel pyrido[1,2-a]pyrimidin-4-one derivatives were prepared starting from 6-(thiophene-2-yl)/phenyl-4-(trifluoromethyl) pyridin-2-amine 1a and 1b. These compounds on reaction with EMME, to afford compounds 2a and 2b, followed by cyclization to afford compounds 3a and 3b. Treatment of compound 3a and 3b with hydrazine hydrate to get compounds 4a and 4b, compounds 4a and 4b on reaction with different substituted aromatic aldehydes to get Schiff’s base derivatives 5a-j, in another way compounds 3a, 3b on reaction with aliphatic amines to get amide derivatives 6a-f. All the compounds 5a-j and 6a-f were screened against four human cancer cell lines (HeLa, COLO205, Hep G2, and MCF 7), among all the derivatives, compounds 5c, 5e, 6a, and 6b showed promising anticancer activity.


Author(s):  
Agnes Paradissis ◽  
Sophia Hatziantoniou ◽  
Aristidis Georgopoulos ◽  
Konstantinos Dimas ◽  
Costas Demetzos

Molecules ◽  
2019 ◽  
Vol 24 (15) ◽  
pp. 2772 ◽  
Author(s):  
Balkrishna ◽  
Das ◽  
Pokhrel ◽  
Joshi ◽  
Laxmi ◽  
...  

Colchicine was extracted from Gloriosa superba seeds using the Super Critical Fluid (CO2) Extraction (SCFE) technology. The seeds were purified upto 99.82% using column chromatography. Colchicine affinity was further investigated for anticancer activity in six human cancer cell lines, i.e., A549, MCF-7, MDA-MB231, PANC-1, HCT116, and SiHa. Purified colchicine showed the least cell cytotoxicity and antiproliferation and caused no G2/M arrest at clinically acceptable concentrations. Mitotic arrest was observed in only A549 and MDA-MB231 cell lines at 60nM concentration. Our finding indicated the possible use of colchicine at a clinically acceptable dose and provided insight into the science behind microtubule destabilization. However, more studies need to be conducted beforethese findings could be established.


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