- TRICYCLIC COMPOUNDS ACTING ON CRBN PROTEINS
-
The present invention discloses a series of tricyclic compounds and use thereof in preparing a medicament for treating a disease related to CRBN protein. Specifically, the present invention discloses a derivative compound of formula (1) or a pharmaceutically acceptable salt thereof.
- -
-
Paragraph 0375-0376
(2021/07/17)
-
- Copper(II)-Catalyzed Tandem Reaction: Synthesis of Furo[3,2- c]coumarin Derivatives and Evaluation for Photophysical Properties
-
An efficient protocol for synthesizing furo[3,2-c]coumarin derivatives is described. The novel reaction could afford the desired furocoumarins with good to excellent yields in a mild and rapid manner. Large substrate scope screening and scale-up preparation have also been accomplished, and selected compounds were evaluated for their photophysical properties.
- Feng, Xi,Qin, Zhen,Cheng, Xinying,Liu, Dongyu,Peng, Yinghe,Huang, Huidan,Song, Bin,Bian, Jinlei,Li, Zhiyu
-
supporting information
p. 12537 - 12548
(2021/09/20)
-
- Synthesis and anti-inflammatory activity of 2-oxo-2H-chromenyl and 2H-chromenyl-5-oxo-2,5-dihydrofuran-3-carboxylates
-
Cycloaddition reaction of 4-chloro-2-oxo-2H-chromene-3-carbaldehydes (3a-g) and 4-chloro-2H-chromene-3-carbaldehydes (7a-h) with activated alkynes (4a-b) provided the 2-oxo-2H-chromenyl-5-oxo-2,5-dihydrofuran-3-carboxylates (5a-n) and 2H-chromenyl-5-oxo-2,5-dihydrofuran-3-carboxylates (8a-p). All the prepared compounds were screened for anti-inflammatory activity. In vitro anti-inflammatory activity data demonstrated that the compounds 5g, 5i, 5k-l and 8f are effective among the tested compounds against TNF-α (1.108 ± 0.002, 0.423 ± 0.022, 0.047 ± 0.001, 0.070 ± 0.002 and 0.142 ± 0.001 μM) in comparison with standard compound Prednisolone (0.033 ± 0.002 μM). Based on in vitro results, three compounds (5i, 5k and 8f) have been selected for in vivo experiments and these compounds are identified as better compounds with respect to anti-inflammatory activity in LPS induced mice model. Compound 5i was identified as potent and showed significant reduction in TNF-α and IL-6.
- Bhimapaka, China Raju,Karri, Shailaja,Kuncha, Madhusudana,Kurma, Siva Hariprasad,Sistla, Ramakrishna
-
-
- Synthesis and biological evaluation of bis-N2,N2′-(4-hydroxycoumarin-3-yl)ethylidene]-2,3-dihydroxysuccinodihydrazides
-
A series of N2,N2′-bis[4-hydroxycoumarin-3-yl)ethylidene]-2,3-dihydroxysuccino-hydrazides, containing 4-hydroxycoumarin, hydrazine and tartaric acid moieties, have been prepared and examined for possible biological activity. Several of these compounds exhibit promising HIV-1 integrase inhibition (IC50 = 3.5 μM), and anti-T. brucei (32% viability) and anti-mycobacterial (Visual MIC90 = 15.63 μM) activity.
- Hoppe, Heinrich C.,Isaacs, Michelle,Kaye, Perry T.,Krause, Rui W. M.,Manyeruke, Meloddy H.,Seldon, Ronnett,Tshiwawa, Thendamudzimu,Warner, Digby F.
-
-
- Synthesis of substituted 4-(4-((3-Nitro-2-oxo-2H-chromene-4-yl)amino)phenyl)morpholine-3-one coumarin derivatives
-
A series of novel 4-(4-amino phenyl) morpholine-3-one substituted coumarin derivatives have been prepared by chloramine coupling reaction and were identified. The novel synthetic route involves nucleophilic substitution reaction of 4-chloro-3-nitro-2H-chromene-2- one with 4-(4-amino phenyl)morpholine-3-one. Due to the presence of nitro group in coumarin derivatives make substitution reaction easy and convenient at low temperature. Using DMF as solvent and K2CO3 as base various substituted 4-(4-((3-nitro-2-oxo-2H-chromen- 4-yl)amino)phenyl)morpholine-3-one derivatives (YS-1 to YS-10) can be obtain in good yield and high purity. Structural characterization of all synthesized compound was done by NMR, Mass and IR spectra.
- Sanghani, Yogesh J.,Koradiya, Suresh B.,Patel, Anilkumar S.
-
p. 1461 - 1464
(2019/06/11)
-
- Novel conjugates of podophyllotoxin and coumarin: Synthesis, cytotoxicities, cell cycle arrest, binding CT DNA and inhibition of Topo IIβ
-
A series of conjugates of podophyllotoxin and coumarin were prepared using the click reaction, and their cytotoxicities against A549, HepG2, HeLa, and LoVo cells were evaluated. Among them, compound 14e exhibited the strongest cytotoxicities against these cancer cells with IC50 values of 4.9–17.5 μM. Furthermore, 14e disrupted microtubules and induced cell cycle arrest at G1 phase by regulating P21 and Cyclin D1 in LoVo cells. In addition, 14e bond CT DNA and selectively inhibited Topo IIβ over Topo IIα. Molecular docking model showed that 14e appeared to form stable hydrogen bonds with several DNA bases and residue Gln778. Taken together, these conjugates have the potential to be developed as anti-tumor drugs.
- Hao, Shu-Yi,Feng, Shi-Liang,Wang, Xing-Rong,Wang, Zhichao,Chen, Shi-Wu,Hui, Ling
-
supporting information
p. 2129 - 2135
(2019/07/05)
-
- Stereoselective synthesis of carbohydrate fused pyrano[3,2-c]pyranones as anticancer agents
-
Pyrano[3,2-c]pyranone is an important structural motif present in many natural products exhibiting diverse biological activities. Two series of carbohydrate fused pyrano[3,2-c]pyranone derivatives (n = 20) were efficiently synthesized starting from 2-C-formyl galactal and 2-C-formyl glucal, reacting with various 4-hydroxycoumarins in a very short reaction time (10 min) under microwave assisted conditions. The anticancer activity of these synthesized pyrano[3,2-c]pyranones was determined in detail through cellular assays against MCF-7 (breast), MDA-MB-231 (breast) and HepG2 (liver) cancer cell lines. The newly synthesized pyrano[3,2-c]pyranones were screened for their cell-viability and anti-proliferative activity against MCF-7, MDA-MB-231 and HepG2 cell lines. Compounds 12, 13 and 14 exhibited high growth inhibitory potencies selectively against MCF-7 cells with half-maximal inhibitory concentration (IC50) values of 19.9, 14.5 and 10.9 μM respectively. Compounds 12, 13, 14, 15 and 19 inhibited the growth of MDA-MB-231 cells (breast) by 43, 44, 37, 31 and 45% respectively. However, no inhibitory effect was observed for these compounds in the human liver cancer cell line (HepG2) and normal cell lines (HEK293, human embryonic kidney cells). Mechanistic studies showed that these compounds alter the cell morphology and cause G2/M arrest in MCF-7. Further studies showed that compounds 12, 13 and 14 significantly inhibited cell migration which was accompanied by altered microtubule distribution. An enhanced accumulation of these compounds in cells was observed as compared to the 4-hydroxycoumarins precursor in the intracellular uptake assay. These findings confirm that carbohydrate fused pyrano[3,2-c]pyranones are better candidates for anticancer activity.
- Kumari, Priti,Gupta, Sonal,Narayana, Chintam,Ahmad, Shakeel,Vishnoi, Nidhi,Singh, Shailja,Sagar, Ram
-
supporting information
p. 13985 - 13997
(2018/08/21)
-
- Synthesis of furo[3,2-c]coumarins via I2/TBHP-mediated reaction of 4-hydroxycoumarins with terminal alkynes
-
An efficient I2/TBHP-mediated process for the formation of furo[3,2-c]coumarins from readily available materials has been developed. This process for the formation of furo[3,2-c]coumarins is quite environmental friendly and atom-economical.
- Chu, Xianglong,Tang, Ziqiang,Ma, Jiangshan,He, Libowen,Feng, Lei,Ma, Chen
-
p. 970 - 974
(2018/02/09)
-
- Natural product Hirtellanine B and its derivatives in the preparation process for the preparation of medicine for treating tumor with the application of the
-
The present invention provides a preparation method of a natural product Hirtellanine B, wherein 2,4,6-trihydroxyacetophenone is adopted as a raw material, and steps of compound a preparation, compound b preparation, compound c preparation, compound d preparation, compound e preparation, compound f preparation, compound g preparation, and the like are performed to prepare the natural product Hirtellanine B. According to the present invention, biological activity screening is performed on Hirtellanine B and 14 Hirtellanine B derivatives, and results show that the natural product Hirtellanine B can inhibit proliferations of Jurkat cells, Raji cells and K562 cells, and the compounds provide a certain inhibition activity for tumor cells. The method has characteristics of easily available raw material, high reaction yield and reasonable operation, and is suitable for industrial production. The Hirtellanine B and the derivatives thereof can be used for preparing tumor treatment drugs, and have great clinical values. The natural product Hirtellanine B preparation method reaction formulas are as the follows.
- -
-
Paragraph 0051; 0137
(2016/10/10)
-
- Synthesis and biological evaluation of novel 2,3-dihydrochromeno[3,4-d]imidazol-4(1H)-one derivatives as potent anticancer cell proliferation and migration agents
-
In this study, a series of novel molecules containing chromeno [3,4-d] imidazol-4(1H)-one was synthesized and their biological activities were evaluated. Among them, compound 35 showed a dramatic anticancer activity against HCT116 and MCF-7, and the flow cytometry assays demonstrated that it could arrest G0/G1 cell-cycle and induce apoptosis of SW620 cells in a dose-dependent manner. Besides, it also blocked MCF-7 cancer cell migration. Moreover, it inhibited tumor growth in HCT116 subcutaneously implanted xenografted mice. Taken together, compound 35 may be a promising candidate for anti-cancer agent as well as metastatic one.
- Han, Xuan,Luo, Jiang,Wu, Feng,Hou, XueYan,Yan, Guoyi,Zhou, Meng,Zhang, Mengqi,Pu, Chunlan,Li, Rui
-
p. 232 - 243
(2016/04/05)
-
- Five-membered urea link and coumarin derivative or its pharmaceutically acceptable salts and use
-
The invention relates to a small molecule medicament based on PI3K (Phosphatidyl Inositol 3-kinase)/mTOR (Mammalian Target of Rapamycin) double targets, belongs to the technical field of chemical medicines, and in particular relates to a five-membered urea ring-coumarin derivative or a pharmaceutical salt and an application thereof. A compound claimed by the invention has a structure shown as formula I described in the specification, and pharmacological experiments show that the compound has excellent inhibitory activity in a plurality of tumor cell strains.
- -
-
-
- Combined Claisen Rearrangement and Oxidative Cyclization as a Route to Hydroxymethyl Dihydrofuran-Annulated Coumarins
-
A convenient and simple method for the synthesis of novel 3,4-dihydrofuran-annulated coumarins, 3-(hydroxymethyl)-2H-furo[3,2-c]chromen-4(3H)-ones 5a, 5b, 5c, 5d, 5e, 5f, 5g, by combined Claisen rearrangement and intramolecular regioselective oxidative cyclization of 4-O-allyl coumarin intermediates 3a, 3b, 3c, 3d, 3e, 3f, 3g using inexpensive oxidizing agent m-CPBA is described. The reaction proceeds smoothly by tandem epoxidation/regioselective 5-exo-tet-intramolecular ring opening. The structures of synthesized compounds are established on the basis of spectral data including IR, 1H NMR, and mass and elemental analyses.
- Jayaprakash, Rao Y.,Chakravarthula, Venu
-
p. 1014 - 1018
(2015/08/06)
-
- Synthesis and biological evaluation of 4-(1,2,3-triazol-1-yl)coumarin derivatives as potential antitumor agents
-
In this research, a series of 4-(1,2,3-triazol-1-yl)coumarin conjugates were synthesized and their anticancer activities were evaluated in vitro against three human cancer cell lines, including human breast carcinoma MCF-7 cell, colon carcinoma SW480 cell and lung carcinoma A549 cell. To increase the biological potency, structural optimization campaign was conducted focusing on the C-4 position of 1,2,3-triazole and the C-6, C-7 positions of coumarin. In addition, to further evaluate the role of 1,2,3-triazole and coumarin for antiproliferative activity, 9 compounds possessing 4-(piperazin-1-yl)coumarin framework and 3 derivatives baring quinoline core were also synthesized. By MTT assay in vitro, most of the compounds display attractive antitumor activities, especially 23. Further flow cytometry assays demonstrate that compound 23 exerts the antiproliferative role through arresting G2/M cell-cycle and inducing apoptosis.
- Zhang, Wenjuan,Li, Zhi,Zhou, Meng,Wu, Feng,Hou, Xueyan,Luo, Hao,Liu, Hao,Han, Xuan,Yan, Guoyi,Ding, Zhenyu,Li, Rui
-
p. 799 - 807
(2014/02/14)
-
- Pd-catalyzed chemo-selective mono-arylations and bis-arylations of functionalized 4-chlorocoumarins with triarylbismuths as threefold arylating reagents
-
Cross-coupling reactions of differently substituted 4-chlorocoumarins were studied under palladium catalysis using triarylbismuths as threefold arylating reagents. The high reactivity of 4-chlorocoumarins was demonstrated delivering mono- and bis-arylation products in a chemo-selective manner. The reaction conditions employed are simple, robust and the threefold coupling reactivity of triarylbismuth reagents was witnessed with good to high yields in 2-4 h conditions. The utility of the methodology was explored in the synthesis of a few natural occurring neoflavones (3.27-3.30). In addition, the 4-arylcoumarin 3.1 product is a useful precursor for the preparation of (R)-tolterodine.
- Rao, Maddali L.N.,Kumar, Abhijeet
-
p. 6995 - 7005
(2015/03/14)
-
- Palladium-catalyzed oxidative annulation via C-H/N-H functionalization: Access to substituted pyrroles
-
Pyrroles, ubiquitous bioactive heterocycles in nature, are readily prepared via a palladium-catalyzed oxidative annulation of cyclic trans-enamines to various internal alkynes in the absence of a directing group. Copyright
- Peng, Shiyong,Wang, Lei,Huang, Jiayao,Sun, Shaofa,Guo, Haibing,Wang, Jian
-
supporting information
p. 2550 - 2557
(2013/10/21)
-
- Mapping the ATP-binding domain of DNA-dependent protein kinase (DNA-PK) with coumarin- and isocoumarin-derived inhibitors
-
Replacement of the core heterocycle of a defined series of chromen-4-one DNA-PK inhibitors by the isomeric chromen-2-one (coumarin) and isochromen-1-one (isocoumarin) scaffolds was investigated. Structure-activity relationships for DNA-PK inhibition were broadly consistent, albeit with a reduction of potency compared with the parent chromenone.
- Payne, Sara L.,Rodriguez-Aristegui, Sonsoles,Bardos, Julia,Cano, Celine,Golding, Bernard T.,Hardcastle, Ian R.,Peacock, Marcus,Parveen, Nahida,Griffin, Roger J.
-
scheme or table
p. 3649 - 3653
(2010/09/17)
-
- Coumarin derivatives for the treatment of allergies
-
Pharmaceutical compositions for the treatment of allergies are produced using coumarin derivatives as the active agent. Certain of these compounds and their salts are novel.
- -
-
-