Metabolism and Metabolites of Dithiocarbamates in the Plant Pathogenic Fungus Leptosphaeria maculans
摘要:
Synthetic compounds containing a dithiocarbamate group are known to have a variety of biological effects and applications including antifungal, herbicidal, and insecticidal application. Leptosphaeria maculans is a fungal pathogen of crucifers able to detoxify efficiently the only plant natural product containing a dithiocarbamate group, the phytoalexin brassinin. To evaluate the effects of dithiocarbamates on L. maculans, a number of structurally diverse S-methyl dithiocarbamates containing indolyl, biphenyl, and benzimidazolyl moieties were synthesized, and their antifungal activities and metabolism by L. maculans were investigated. All dithiocarbamates were transformed by L. maculans through hydrolysis to the corresponding amines, which were less antifungal than the parent compounds. Two dithiocarbonates were shown to be much less antifungal than the corresponding dithiocarbamates. Results of this investigation indicate that S-methyl dithiocarbamates are not useful inhibitors of L. maculans and that their rates of transformation by L. maculans did not correlate with the antifungal activity of the particular compound.
Sequential Xanthalation and <i>O</i>-Trifluoromethylation of Phenols: A Procedure for the Synthesis of Aryl Trifluoromethyl Ethers
作者:Makoto Yoritate、Allyn T. Londregan、Yajing Lian、John F. Hartwig
DOI:10.1021/acs.joc.9b02717
日期:2019.12.20
known methods to synthesize aryl trifluoromethyl ethers require harsh reagents and highly controlled reaction conditions and rarely occur when heteroaromatic units are present. The two-step O-trifluoromethylation of phenols via aryl xanthates is one such method that suffers from these drawbacks. Herein, we report a method for the synthesis of aryl trifluoromethyl ethersfrom phenols by the facile conversion
Azole–carbodithioate hybrids as vaginal anti-Candida contraceptive agents: Design, synthesis and docking studies
作者:Lalit Kumar、Nand Lal、Vikash Kumar、Amit Sarswat、Santosh Jangir、Veenu Bala、Lokesh Kumar、Bhavana Kushwaha、Atindra K. Pandey、Mohammad I. Siddiqi、Praveen K. Shukla、Jagdamba P. Maikhuri、Gopal Gupta、Vishnu L. Sharma
DOI:10.1016/j.ejmech.2013.09.007
日期:2013.12
Azole and carbodithioate hybrids were synthesized as alkyl 1H-azole-1-carbodithioates (7-27) and evaluated for spermicidal/microbicidal activities against human sperm, Trichomonas vaginalis and Candida species. Seventeen compounds (7-14, 16-18 and 20-25) showed spermicidal activity at MEC 1.0% (w/v) and permanently immobilized 100% normal human spermatozoa within similar to 30 s. Seventeen compounds (7-11, 13-18 and 20-25) exhibited anti-Candida activity (IC50 1.26-47.69 mu g/mL). All compounds were devoid of bactericidal activity against four bacterial strains (50.00 mu g/mL) and antiprotozoal activity against Trichomonas vaginalis (200.00 mu g/mL). Four promising compounds (10, 17, 20 and 22) have better safety profile as compared to Nonoxyno1-9 (N-9). Docking study was done to visualize the possible interaction of designed scaffold with prospective receptor (Cyp51) of Candida albicans. (C) 2013 Elsevier Masson SAS. All rights reserved.
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Metabolism and Metabolites of Dithiocarbamates in the Plant Pathogenic Fungus Leptosphaeria maculans
作者:M. Soledade C. Pedras、Vijay K. Sarma-Mamillapalle
DOI:10.1021/jf302038a
日期:2012.8.15
Synthetic compounds containing a dithiocarbamate group are known to have a variety of biological effects and applications including antifungal, herbicidal, and insecticidal application. Leptosphaeria maculans is a fungal pathogen of crucifers able to detoxify efficiently the only plant natural product containing a dithiocarbamate group, the phytoalexin brassinin. To evaluate the effects of dithiocarbamates on L. maculans, a number of structurally diverse S-methyl dithiocarbamates containing indolyl, biphenyl, and benzimidazolyl moieties were synthesized, and their antifungal activities and metabolism by L. maculans were investigated. All dithiocarbamates were transformed by L. maculans through hydrolysis to the corresponding amines, which were less antifungal than the parent compounds. Two dithiocarbonates were shown to be much less antifungal than the corresponding dithiocarbamates. Results of this investigation indicate that S-methyl dithiocarbamates are not useful inhibitors of L. maculans and that their rates of transformation by L. maculans did not correlate with the antifungal activity of the particular compound.
Madhu; Tangeda, Saritha Jyostna; Qarlapati, Achaiah, Indian Journal of Heterocyclic Chemistry, 2011, vol. 21, # 2, p. 173 - 176