- Dissecting metabolic puzzles through isotope feeding: A novel amino acid in the biosynthetic pathway of the cruciferous phytoalexins rapalexin A and isocyalexin A
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Understanding defence pathways of plants is crucial to develop disease-resistant agronomic crops, an important element of sustainable agriculture. For this reason, natural plant defenses such as phytoalexins, involved in protecting plants against microbial pathogens, have enormous biotechnological appeal. Crucifers are economically important plants, with worldwide impact as oilseeds, vegetables of great dietetic value and even nutraceuticals. Notably, the intermediates involved in the biosynthetic pathways of unique cruciferous phytoalexins such as rapalexin A and isocyalexin A remain unknown. Toward this end, using numerous perdeuterated compounds, we have established the potential precursors of these unique phytoalexins and propose for the first time their detailed biosynthetic pathway. This pathway involves a variety of intermediates and a novel amino acid as the central piece of this complex puzzle. This work has set the stage for the discovery of enzymes and genes of the biosynthetic pathway of cruciferous phytoalexins of unique scaffolds.
- Pedras, M. Soledade C.,Yaya, Estifanos E.
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p. 1149 - 1166
(2013/03/29)
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- 2-OXO-2- (2-PHENYL-5,6,7,8-TETRAHYDRO-INDOLIZIN-3-YL) -ACETAMIDE DERIVATIVES AND RELATED COMPOUNDS AS ANTIFUNGAL AGENTS
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The invention provides compounds of formula (I), and pharmaceutically and agriculturally acceptable salts thereof: wherein: R1, R2, R3, R4, R5, R6, R7, R8, A1, L1 and n are as defined herein. These compounds and their pharmaceutically acceptable salts are useful in the manufacture of medicaments for use in the prevention or treatment of a fungal disease. Compounds of formula (I), and agriculturally acceptable salts thereof, may also be used as agricultural fungicides.
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Page/Page column 23
(2011/02/15)
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- PYRROLE ANTIFUNGAL AGENTS
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The invention provides compounds of formula (I), and pharmaceutically and agriculturally acceptable salts thereof; wherein: R1, R2, R3, R4, R5, R6, A1, L1 and n are as defined herein. These compounds and their pharmaceutically acceptable salts are useful in prevention or treatment of a fungal disease. Compounds of formula (I), and agriculturally acceptable salts thereof, may also be used as agricultural fungicides.
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Page/Page column 133
(2009/12/05)
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- Non-nucleoside reverse transcriptase inhibitors
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Compounds represented by formula I: wherein R1 is H, halogen, (C1-4)alkyl, O(C1-4)alkyl, and haloalkyl; R2 is H or (C1-4)alkyl; R3 is H or (C1-4)alkyl; R4 is (C1-4)alkyl, (C1-4)alkyl(C3-7)cycloalkyl, or (C3-7)cycloalkyl; and Q is a fused phenyl-5 or 6-membered saturated heterocycle having one to two heteroatoms selected from O and N, said Q being optionally substituted with hydroxy, or (C1-4)alkyl which in turn maybe optionally substituted with pyridinyl-N-oxide or C(O)OR wherein R is H or (C1-4)alkyl; or a salt thereof. The compounds have inhibitory activity against Wild Type, and single and double mutants strains, of HIV.
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- Novel substituted 4-aminomethylpiperidines as potent and selective human β3-agonists. Part 1: Aryloxypropanolaminomethylpiperidines
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The synthesis and SAR of a series of human β3 adrenoreceptor agonists based on a template derived from a common pharmacophore coupled with 4-aminomethylpiperidine is described. Potent and selective agents were identified such as 26 that was in vitro active in CHO cells expressing human β3-AR (EC50=49 nM, IA=1.1), and in vivo active in a transgenic mouse model.
- Steffan, Robert J.,Ashwell, Mark A.,Solvibile, William R.,Matelan, Edward,Largis, Elwood,Han, Stella,Tillet, Jeffery,Mulvey, Ruth
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p. 2957 - 2961
(2007/10/03)
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- Reactions of Organic Anions, 147.- Simple and General Synthesis of Hydroxy- and Methoxyindoles via Vicarious Nucleophilic Substitution of Hydrogen
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A simple synthesis of 4-, 5-, 6-, and 7-hydroxy- and -methoxyindoles via cyanoalkylation of O-protected nitrophenols by vicarious nucleophilic substitution of hydrogen, followed by catalytic hydrogenation of the (2-nitroaryl)acetonitriles obtained is described.
- Makosza, Mieczyslaw,Danikiewicz, Witold,Wojciechowski, Krzysztof
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p. 203 - 208
(2007/10/02)
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