BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 18 ppt

... of β -1 ,3-glucanase, chitinase, phenylalanine ammonia-lyase (PAL), chalcone synthase (CHS), caffeic acid O-methyltransferase (C- OMT), 3-hydroxy-3-methyl glutaryl CoA reductase (HMGR), and δ-cadinene ... the volatile monoterpenes and sesquiterpenes, such as β-ocimene, myrcene, - and β-pinenes, γ-ter- pinene, β-caryophyllene, humulene, and β-bisabolene, also are stored in the lysigenous...

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... 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 -1 8 -[ (3,4,5-trimethoxybenzoyl) oxy ]-3 β, 20α-yohimban-1 6-...

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... 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 6 5.2 Tree-of-Heaven (Ailanthus altissima) Tree-of-heaven (Ailanthus altissima, Simaroubaceae) has been known since the work of Mer- gen in 1959 to prod...

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... 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), and the (– )-1 7-hydroxy-16β-kauran-19-oic acid (30) (Figure 2.7). In general, clear inhibitory effec...

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... plants 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 ... (64.9) 1, 5, 6, 9, 12, 13, 17 Velvetbean 2-yr. crop 0.00 (0.0) No emergence Velvetbean 1-yr. crop, 1-yr. fallow 2 3.05 (74.8) 1, 10, 12, 13, 16, 18 Fallow 3-yr. fallow 3 0.97 (37.3) 1, 2, 6, 10,...

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... hyperoside, quercetin 4 - -xyloside, 3-methylquercetin 3 - -xyloside 19 Dienoic, trienoic, and tetraenoic acids 20 α-aminoadipic acid 21 β-sitosterol, gallic acid, 1-hexacosanol 22 Nupharin, ... 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. lutea showed 6,6′-dihydroxythiobinupharidine to be high...

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... 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 known compounds: (24R)-stigmast-4-ene-3-one; ergost-4-ene-3-one; (24R)-s...

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... 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 ... 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...

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... Another PPT analog, L-(N 5 -phosphono)methionine-S-sulfoximine (PMSO) (see Figure 9.8) is a potent GS inhibi- tor and a metabolite of L-(N 5 -phosphono)methionine-S-sulfoximinyl-L-ala-L-ala (PMSO- Ala-Ala) 76 ... herbicides (pendimetha- lin [N-(1-ethylpropyl )-3 ,4-dimethyl-2,6-dinitrobenzenamine]; thiobencarb [S-[(4-chlorophe- nyl)methyl]-diethylcarbamothioate]; quinclorac (3,7-dichloro...

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... most lucrative sources of phytotoxic allelochemi- cals. Plant-derived phytotoxins have been the sources of two commercial herbicides: a 1, 8- cineole-derived herbicide, cinmethylin, 49 and the newly ... extraction ef - ciency could be found with fresh tissues only, suggesting that intact glands may be impor- tant in order for effective exploitation of this method. Nevertheless, with a...

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