Academic literature on the topic 'Dimethoxy anthraquinones'

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Journal articles on the topic "Dimethoxy anthraquinones"

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Gupta, Richa K., Ganesh M. S. Thakuri, Gan B. Bajracharya, and Ram Narayan Jha. "Synthesis of antioxidative anthraquinones as potential anticancer agents." BIBECHANA 18, no. 2 (2021): 143–53. http://dx.doi.org/10.3126/bibechana.v18i2.31234.

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Antioxidant and antibacterial activities of natural anthraquinones namely chrysophanol (1) and emodin (2), and synthesized anthraquinones viz. 2-methylanthraquinone (3), anthraquinone (4), 2-bromoanthraquinone (5), rubiadin (6), chrysophanol diacetate (7), rubiadin diacetate (8) and 1,8-dimethoxy-3-methylanthraquinone (9) were investigated. Anthraquinones 9, 3, 6, 5 and 2 exhibited a high DPPH• radical scavenging capacity (IC50 = <500 μg/mL) showing their therapeutic potentiality for the treatment of cancers. These anthraquinones 1-9 have also displayed a weak to moderate antibacterial acti
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Suraj, B. Kalidhar. "A distinction between 1,5- and 1,8-dimethoxy anthraquinones using IR of the demethylated product." Journal of Indian Chemical Society Vol. 85, July 2008 (2008): 763–64. https://doi.org/10.5281/zenodo.5817234.

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Department of Chemistry, Haryana Agricultural University, Hisar-125 004, Haryana, India <em>E-mail :</em> kalidhar@hau.ernet.in <em>Manuscript received 31 December 2007, accepted 6 May 2008</em> When spectral data for a naturally occurring compound suggests two alternative structures involving 1,5- and 1,8-dimethoxy anthraquinones; IR of the demethylated compound helps in choosing the correct structure.
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Osman, Che Puteh, and Nor Hadiani Ismail. "A REVIEW ON THE CHEMISTRY AND PHARMACOLOGY OF Rennellia elliptica Korth." Indonesian Journal of Tropical and Infectious Disease 6, no. 6 (2017): 131. http://dx.doi.org/10.20473/ijtid.v6i6.6642.

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Rennellia elliptica, popularly dubbed as Malaysian Ginseng, is widely used in traditional medicine among the local Jakun community in Endau-Rompin State Park, Pahang, Malaysia. The decoction of the roots is traditionally taken for treatment of body aches, as postpartum tonic, as aphrodisiac and for the treatment of jaundice. In the effort of searching new botanical drugs and drug candidates from tropical rainforest, the team from this laboratory had conducted a sizeable phytochemical and biological screening program of tropical plant at Endau Rompin State Park, Pahang with the help from the in
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Kongyen, Wipapan, Vatcharin Rukachaisirikul, Souwalak Phongpaichit, Nongyao Sawangjaroen, Phruksa Songsing, and Hattaya Madardam. "Anthraquinone and Naphthoquinone Derivatives from the Roots of Coptosapelta flavescens." Natural Product Communications 9, no. 2 (2014): 1934578X1400900. http://dx.doi.org/10.1177/1934578x1400900222.

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Investigation of the acetone and methanol extracts of the roots of Coptosapelta flavescens using various chromatographic techniques led to the isolation of four anthraquinones (1 and 3–5) and one naphthoquinone (2). 1,4-Dimethoxy-2-methylanthraquinone (1) and 2-amino-3-methoxycarbonyl-1,4-naphthoquinone (2) are reported as natural compounds for the first time. This is the first report on the phytochemistry and biological activity of compounds from C. flavescens.
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Naicker, Leeann, Viresh Mohanlall, and Bharti Odhav. "GENETIC TRANSFORMATION OF CERATOTHECA TRILOBA FOR THE PRODUCTION OF ANTHRAQUINONES FROM HAIRY ROOT CULTURES." African Journal of Traditional, Complementary and Alternative Medicines 13, no. 3 (2016): 85–94. http://dx.doi.org/10.21010/ajtcam.v13i3.11.

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Background: Ceratotheca triloba was found to contain three anthraquinones (9, 10-anthracenedione, 1-hydroxy-4-methylanthraquinone&#x0D; and 5, 8-dimethoxy-2, 3, 10, 10a-tetrahydro-1H, 4aH-phenanthrene-4, 9-dione [DTP]) in its roots. Inhibition of the human topoisomerase&#x0D; II enzyme is the basis of some currently used cancer drugs such as doxorubicin which is shown to be cardio-toxic. For this reason we&#x0D; decided to investigate anthraquinones from C. triloba as a possible anticancer drug, however the main limitation was the large quantities&#x0D; of roots that are required to obtain a g
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Tam, Mai-Ngoc, Nguyen-Hai Nam, Guang-Zhu Jin, and Byung-Zun Ahn. "2-(1-Hydroxyiminoalkyl)-1,4-dimethoxy-9,10-anthraquinones: Synthesis and evaluation of cytotoxicity." Archives of Pharmacal Research 23, no. 4 (2000): 283–87. http://dx.doi.org/10.1007/bf02975436.

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Berkil Akar, Kiymet, Osman Cakmak, Orhan Büyükgüngör, and Ertan Sahin. "Functionalization of anthracene: A selective route to brominated 1,4-anthraquinones." Beilstein Journal of Organic Chemistry 7 (July 29, 2011): 1036–45. http://dx.doi.org/10.3762/bjoc.7.118.

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Efficient and stereoselective syntheses are described for the preparation of 2,3,9,10-tetrabromo-1,4-dimethoxy-1,2,3,4-tetrahydroanthracenes 7, 8 and the corresponding 1,4-diol 17 by silver ion-assisted solvolysis of hexabromotetrahydroanthracene 6. Base-promoted aromatization of 7 and 8 afforded synthetically valuable tribromo-1-methoxyanthracenes 10 and 11. The reaction of 17 with sodium methoxide generated tribromodihydroanthracene-1,4-diol 27, whose oxidation with PCC gave 2,9,10-tribromoanthracene-1,4-dione (28). Therefore a selective and efficient method was developed for the preparation
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Lee, Sullim, Quynh Nhu Nguyen, Hung Manh Phung та ін. "Preventive Effects of Anthraquinones Isolated from an Endophytic Fungus, Colletotrichum sp. JS-0367 in Tumor Necrosis Factor-α-Stimulated Damage of Human Dermal Fibroblasts". Antioxidants 10, № 2 (2021): 200. http://dx.doi.org/10.3390/antiox10020200.

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Reactive oxygen species (ROS) are a major causative factor of inflammatory responses and extracellular matrix degradation. ROS also cause skin aging and diverse cutaneous lesions. Therefore, antioxidants that inhibit the generation of ROS may be beneficial in the relief of skin aging and diseases. We investigated the anti-skin aging effect of anthraquinones from cultures of Colletotrichum sp., an endophytic fungus isolated from Morus alba L. using human dermal fibroblasts (HDFs). We preferentially evaluated the preventive effects of anti-oxidative anthraquinones (1, 4) against the generation o
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Khoumeri, Omar, Marc Montana, Thierry Terme, and Patrice Vanelle. "First TDAE approach in quinonic series: synthesis of new 2-substituted 1,4-dimethoxy-9,10-anthraquinones." Tetrahedron 64, no. 49 (2008): 11237–42. http://dx.doi.org/10.1016/j.tet.2008.09.046.

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I. A.M. Al-Dobaissi. "CHEMICAL ANALYSIS OF NEW RECORDED SPECIES Acalypha australis L. AT IRAQ." IRAQI JOURNAL OF AGRICULTURAL SCIENCES 54, no. 3 (2023): 674–81. http://dx.doi.org/10.36103/ijas.v54i3.1745.

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This study was aimed to chemical analysis of new recorded species Acalypha australis L. Plant samples collected from cultivated gardens and fields as well as road sides. This plant is annual herbs or weed, with wiry stem and simple lanceolate green leaves, and unisexual flowers with special cordate bracts, male flower characterized by separated anther sacs, fruits schizocarpic with 2 or 3 mericarps, pollen grains are 3-4-zonocolporate with irregular granulated sculpturing. Extract revealed a variable gropes of an important bioactive compounds as benzuquinones and its derivatives 2,6-dimethoxy
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Reports on the topic "Dimethoxy anthraquinones"

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พรภคกุล, สุรชัย. สารเมแทบอไลท์ต้านจุลชีพและต้านมะเร็งจากราเอ็นโดไฟท์ : รายงานการวิจัย. จุฬาลงกรณ์มหาวิทยาลัย, 2011. https://doi.org/10.58837/chula.res.2011.49.

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การวิจัยภายใต้โครงการนี้ ได้ทำการศึกษาสารเมแทบอไลท์ของราเอ็นโดไฟท์ Emericella variecolor ในอาหารเพาะเลี้ยง Malt Czapek-Dox broth (MCzB) และ Czapek-Dox broth (CzB) และสารเมแทบอไลท์ ของเห็ดเผาะ Astraeus odoratus ส่วนสกัดเอธิล แอซิเทตของส่วนน้ำเลี้ยงและเส้นใยราเอ็นโดไฟท์ E. variecolor ที่เพาะเลี้ยงในอาหาร เหลว Malt Czapek-Dox นำไปแยกด้วยซิลิกาเจลคอลัมน์โครมาโทกราฟี โดยใช้ตัวทำละลาย เฮกเซน, เฮ กเซน-เอธิล แอซิเทต, เอธิล แอซิเทต, เอธิล แอซิเทต-เมทานอล และเมทานอล ตามลำดับ นำส่วนแยกมาทำ ให้บริสุทธิ์ สารที่แยกได้จากส่วนสกัดเอธิล แอซิเทตจากเส้นใย ได้แก่ stellatic acid (1), ergosterol (2), สาร กลุ่ม xant
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