- Design, synthesis, and in vitro evaluation of novel antifungal triazoles
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Twenty-nine novel triazole analogues of ravuconazole and isavuconazole were designed and synthesized. Most of the compounds exhibited potent in vitro antifungal activities against 8 fungal isolates. Especially, compounds a10, a13, and a14 exhibited superior or comparable antifungal activity to ravuconazole against all the tested fungi. Structure-activity relationship study indicated that replacing 4-cyanophenylthioazole moiety of ravuconazole with fluorophenylisoxazole resulted in novel antifungal triazoles with more effectiveness and a broader-spectrum.
- Xie, Fei,Ni, Tingjunhong,Zhao, Jing,Pang, Lei,Li, Ran,Cai, Zhan,Ding, Zichao,Wang, Ting,Yu, Shichong,Jin, Yongsheng,Zhang, Dazhi,Jiang, Yuanying
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Read Online
- Triazole alcohol derivative as well as preparation method and application thereof
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The invention relates to a triazole alcohol derivative as well as a preparation method and application thereof. The chemical structure of the triazole alcohol derivative is shown as a formula I, R1 represents a benzene ring or a substituted benzene ring, and substituent groups of the substituted benzene ring can be located at all positions of the benzene ring, can be mono-substituted or multi-substituted, and can be selected from a) halogen which is F and Cl; b) an electron withdrawing group which is cyano or trifluoromethyl; c ) a lower alkyl of 1-4 carbon atoms or a halogen substituted loweralkyl; and d) lower alkoxy of 1-4 carbon atoms or halogen substituted lower alkoxy. The compound of the invention has strong antifungal activity, has the advantages of low toxicity, wide antibacterial spectrum and the like, and can be used for preparing antifungal drugs.
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Paragraph 0211; 0213
(2020/03/11)
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- Design, synthesis, and in vitro evaluation of novel triazole analogues featuring isoxazole moieties as antifungal agents
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In order to develop novel antifungal agents, based on our previous work, a series of (2R,3R)-3-((3-substitutied-isoxazol-5-yl)methoxy)-2-(2,4-difluorophenyl)-1-(1H-1,2,4-triazol-1-yl) butan-2-ol (a1-a26) were designed and synthesized. All of the compounds exhibited good in vitro antifungal activities against eight human pathogenic fungi. Among them, compound a6 showed excellent inhibitory activity against Candida albicans and Candida parasilosis with MIC80 values of 0.0313 μg/mL. In addition, compounds a6, a9, a12, a13 and a14 exhibited moderate inhibitory activities against fluconazole-resistant isolates with MIC80 values ranging from 8 μg/mL to 16 μg/mL. Furthermore, compounds a6, a12 and a23 exhibited low inhibition profiles for CYP3A4. Clear SARs were analyzed, and the molecular docking experiment was carried out to further investigate the relationship between a6 and the target enzyme CYP51.
- Chai, Xiaoyun,Ding, Zichao,Hao, Yumeng,Jiang, Yuanying,Jin, Yongsheng,Ni, Tingjunhong,Wang, Ruilian,Wang, Ruina,Wang, Ting,Xie, Fei,Yu, Shichong,Zhang, Dazhi
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supporting information
(2020/06/17)
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- Discovery of Natural Product-Based Fungicides (II): Semisynthesis and Biological Activity of Sarisan Attached 3-Phenylisoxazolines as Antifungal Agents
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Many phytopathogenic fungi cause severe damage to crop yields. In continuation of our research aimed at the discovery and development of natural products-based fungicides, a series of thirty-one sarisan attached 3-phenylisoxazolines were synthesized and evaluated for their antifungal activities against five phytopathogenic fungi (B. cinerea, C. lagenarium, A. solani, F. solani, and F. graminearum). Among all title sarisan derivatives, compounds IV2, IV14 and IV23 showed potent antifungal activity against some phytopathogenic fungi. In particular, compound IV2 exhibited a broad-spectrum and more potent antifungal activity against A. solani, F. solani, and F. graminearum than the commercial fungicide Hymexazol. In addition, compounds IV2, IV14 and IV23 also displayed relative low toxicity on normal NRK-52E cells. This work will give some insights into the development of sarisan derivatives as new fungicide candidates in plant protection.
- Liu, Zhiyan,Cao, Jiangping,Yan, Xiaoting,Cheng, Wanqing,Wang, Xiaoguang,Yang, Ruige,Guo, Yong
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- Triazole alcohol derivative and preparation method and application thereof
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The invention relates to a triazole alcohol derivative and a preparation method and application thereof. The chemical structure of the triazole alcohol derivative is as shown in the formula I. The invention also provides salt of the compound, a pharmaceutical composition, a preparation method and application. The compound of the invention has strong antifungal activity, has advantages of low toxicity and wide antimicrobial spectrum, and can be used for preparation of antifungal drugs.
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Paragraph 0256
(2017/06/28)
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- 3-PHENYLISOXAZOLIN DERIVATIVES WITH HERBICIDAL ACTION
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3-Phenylisoxazoline derivatives of the formula (I), and the use thereof as herbicides, are described. In this formula (I), X2 to X6 and R1 to R3 are radicals such as hydrogen, halogen, and organic radicals such
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Paragraph 0167
(2015/10/05)
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- Montmorillonite clay Cu(II) catalyzed domino one-pot multicomponent synthesis of 3,5-disubstituted isoxazoles
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A simple and efficient one-pot multicomponent approach for the synthesis of 3,5-disubstituted isoxazoles directly from corresponding aldehydes and terminal alkynes using recyclable montmorillonite clay supported Cu(II)/NaN3 catalytic system under aqueous conditions have been developed. The 'domino' one-pot MCR approach involves hydroxyamination of aldehydes followed by chlorination and then generation of reactive 'nitrile oxide' which undergoes 1,3-dipolar cycloaddition with alkynes to produce 3,5-disubstituted isoxazoles. The method is operationally simple, regioselective, economical, and possesses excellent functional group compatibility to synthesize structurally diverse isoxazoles in good yields.
- Bharate, Sandip B.,Padala, Anil K.,Dar, Bashir A.,Yadav, Rammohan R.,Singh, Baldev,Vishwakarma, Ram A.
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supporting information
p. 3558 - 3561
(2013/07/05)
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