BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 20 doc
BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 20 doc
... A-2, B-2, A-1, and B-1, while totalavenacins included active avenacins and mono-dG-A-1 which has some residual fungi-cidal activity. The concentrations of avenacins A-1, B-1, and A-2 were greater ... mono-dG-A1 (Figure 20. 3). Yields of A-1 and A-2 are approximately10 times higher with the improved extraction procedure, while yields of B-1 are approxi-mately 2 times higher. Decreased B-2 ... 7-day-old root samples from 4 oat varieties, usingboth extraction procedures, and subsequently analyzed for avenacins via HPLC(Tables 20. 1 and 20. 2). Total active avenacins included A-2, B-2,...
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BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 2 docx
... silica gel using hex-ane-EtOAc, mixtures of increasing polarity consisting of four kaurenoid carboxylic acids:(–)-kaur-16-en-19-oic acid (28), (–)-grandifloric acid, (–)-angeloylgrandifloric ... acids:(–)-kaur-16-en-19-oic acid (28), (–)-grandifloric acid, (–)-angeloylgrandifloric acid (29), andthe (– )-1 7-hydroxy-16β-kauran-19-oic acid (30) (Figure 2.7).In general, clear inhibitory effects were observed on ... sativum, and A. cepa (selected effectsare presented in Figure 2.8). The most active compound was (–)-kaur-16-en-19-oic (28)which, at a concentration of 10–3M, reduced germination (–36%) and...
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BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 13 doc
... sim-ilar in appearance to a good Pilsner beer. This F-2-p fraction contains native plant enzymesas well as salts, soluble carbohydrates, and other water solubles. The F-1-protein concen-trate ... spray-drying of the basic solution.Fraction-2-proteins are recovered by adjusting the pH of the pale amber solution to 4.5followed by cooling to 5-1 0°C for 24 h. As in the case of F-1-p, this ... applicationof 1 2-6 -6 N/P/K at a rate of 75 lb/100 linear feet of bed, followed by re-fertilization of thebeds with 100 lb/100 linear feet of 1 5-0 -1 4 after each harvest. Insect, weed, and disease con-trol...
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BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 15 doc
... allowedto solidify. Solutions of test compounds (6-pentyl-2H-pyran-2-one (I), 4-methyl-6-pentyl-2H-pyran-2-one (VII),or 4,6-dimethyl-2H-pyran-2-one (VIII)) were prepared in acetone and applied ... Press LLC 6-pentyl-2H-pyran-2-one is complex. Understanding its mode of action may prove morechallenging than one might anticipate, if indeed 6-pentyl-2H-pyran-2-one is the physiolog-ically relevant ... 15.5Assessments of phytotoxicity of 6-pentyl-2H-pyran-2-one (I), massoialactone (II), γ-decalactone (III), δ-decalac-tone (IV), γ-dodecalactone (V), and δ-dodecalactone (VI). (From Parker, S.R.,...
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BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 1 ppt
... 2-( 4-dichlorophenoxy) phe-noxy-methyl propanoate, Hoelon®, 1974; Butyl 2-[ 4-( 5-trifluoro-2-pyridyloxy)phenoxy]propionate, Fusilade®, 1980; Methyl 2-( 4-( (3-chloro-5-trifluoromethyl )-2 -pyridinyloxy )- phenoxy) ... ajmaline, serpentine, and serpertinine. 3-5 Of these, reserpine,11,17α-dimethyoxy-18 -[ (3,4,5-trimethoxybenzoyl) oxy ]-3 β, 20 -yohimban-1 6- -carboxy-lic acid methyl ester, was the constituent ... 193 2- Biologically active natural products: agrochemicals / Horace G. Cutler, Stephen J. Cutler.p. cm.Includes bibliographical references and index.ISBN 0-8 49 3-1 88 5-8 (alk. paper)1. Natural...
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BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 3 ppsx
... confirmed its association with L-3,4-dihy-droxyphenylalanine (L-DOPA). It is well known that velvetbean seeds contain a high con-centration of L-DOPA (6 to 9%), 20, 21 which plays a role as a ... 32 1-3 25.19. Fujii, Y., Shibuya, T., and Yasuda, T. 1991. L-3,4-dihydroxyphenylalanine as an allelochemicalcandidate from Mucuna pruriens (L.) DC. var. utilis. Agr. Biol. Chem., 55, 61 7-6 18. 20. ... HPLC on an ODS column, and the major inhibitor was iden-tical to L-3,4-dihydroxyphenylalanine(L-DOPA).19 The identification was confirmed by co-chromatography with an authentic sample using two...
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BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 4 ppsx
... hyperoside, quercetin 4 - -xyloside, 3-methylquercetin 3 - -xyloside19Dienoic, trienoic, and tetraenoic acids 20 α-aminoadipic acid21β-sitosterol, gallic acid, 1-hexacosanol22Nupharin, ... gallic acid, myricitrin, myricetin, 1,2,3,4,6-pentagalloyl-D-glucose, and 2,3,4,6-tetragalloyl-D-glucose. Examination of alkaloids from N. luteashowed 6,6′-dihydroxythiobinupharidine to be highly ... skeleton incorporated into 3-furyl-substituted piperidines or quin-olizidines, as well as C30 alkaloids that contain a sulfur atom along with two 3-furyl sub-stituents.1 1-1 3As none of these alkaloids...
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BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 5 ppt
... derivatized to yield the herbicides dicamba (3,6-dichloro-2-methoxybenzoic acid) and chloramben (3-amino-2,5-dichlorobenzoic acid). The allelo-pathic terpenoid 1,8-cineole has served as a model for the ... has not yet been released.1 4-1 65.2 Tree-of-Heaven (Ailanthus altissima)Tree-of-heaven (Ailanthus altissima, Simaroubaceae) has been known since the work of Mer-gen in 1959 to produce one ... members of the Simaroubaceae. Quassinoids are heavily oxygen-ated lactones. The majority have a C -2 0 basic skeleton, but C-18, C-19, and C-25 quassinoidsalso exist.36,37 Quassinoids are degraded...
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BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 6 ppsx
... natural compounds:(24R )-1 4α-methyl-5α-ergostan-3-one; 14α-methyl-5α-cholestan-3-one; cycloart-5-ene-3β,25-diol; cycloart-3β,25-diol; 4α-methylergostan-5-ene-3β-ol; stigmast-4,22-dien-6β-ol- 3- one ... stigmast-4,22-dien-6β-ol- 3- one and 24-phenylethyl-cholest-3,6-dione were identified; together with several knowncompounds: (24R)-stigmast-4-ene-3-one; ergost-4-ene-3-one; (24R)-stigmast-4-ene-3, 6- dione; stigmast-4,22-diene-3,6-dione; ... stigmast-4,22-diene-3,6-dione; ergost-4-ene-3,6-dione; (24R )-5 α-stigmast-3,6-dione;stigmast-22-ene-3,6-dione; ergost-3,6-dione; cholesterol; ergosterol; campesterol; stigmas-terol; β-sitosterol;...
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BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 8 potx
... ana-logs [(± )-1 9b, -1 9c, -1 9d, -2 0a, -2 0b, -2 0c, and -2 0d] of 2, could be synthesized from (± )-1 8a-d(Scheme 8.4).22 In principle, this method would be applied to synthesize the optically active form.23,24 ... (Koto fresh K -2 0) 1/1000c15(±)-CA 10 6(+ )-( 1S,2S)-CA 5 6–7(– )-( 1R,2R)-CA 5 6(±)-AlloCA 10 8–10(±)-AlloCAb10 10–11(+ )-( 1R,2S)-AlloCA 10 12–135 10–111.67 9(– )-( 1S,2R)-AlloCA 10 8–95 ... aromatic amino acids), not naturally occurring JA-Gly, JA-β-Ala, JA-ACC,JA-(+)-coronamic acid were also synthesized. Among them, JA-Leu, JA-Ile, JA-Val,JA-ACC, and JA-(+)-coronamic acid are structurally...
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