BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 11 pps

... repellency and repellent dura- bility against mosquitoes, Aedes albopictus and Culex pipiens. In addition, (+)-eucamalol, (1R, 6R )-( + )-3 -formyl-6-isopropyl-2-cyclohexene-1-ol, which is a new mosquito ... 6.4Hz, H-7), 1.22(3H,s,H-9), 1.36(3H,s,H-10), 4.41(1H,q,J = 2.4Hz, H-3). 13 CNMR(50MHz, CDCl 3 , TMS): δ20.4 (t,C-5), 22.3 (q,C-7), 25.7 (d,C-1), 28.8(q,C-9), 29.0(q,C-10), 35.0(t,C-6...

Ngày tải lên: 11/08/2014, 12:21

... species observed 6 Upland rice 3-yr. crop 1 5 .11 (49.4) 4 1, 3, 5, 6, 7, 8, 9, 10, 11 5 Egg plant 3-yr. crop 16.82 (40.1) 1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 Tomato 3-yr. crop 4.92 (64.9) 1, ... 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...

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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, ... 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 3 As none of the...

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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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... 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-8-quinolineca...

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... substance or (E )-9 -oxo-2-decenoic acid (9-ODA) (II), appears to be synergized by other compounds pro- duced in the mandibular glands. 19 One of these,(E )-9 -hydroxy-2-decenoic acid (9-HDA) (III), ... to possess great multifunctionality as defensive compounds. 12.2.4 2-Alkyl-6-Methylpiperidines Mixtures of cis- and trans-2-alkyl-6-methylpiperidines have been identified as poison gland p...

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... maculosin-2, in contrast to uniquely selective mac- ulosin-1, possesses a broad spectrum herbicide activity. We tested maculosin-2 first on more closely related to spotted knapweed plants, like yel- low ... analog (cyclo-PhePro, II) being the most active. Interestingly, II appeared to be active against a wide variety of plants. We suggested that protected phenylalanine and not a diketopiper...

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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-18 -[ (3,4,5-trimethoxybenzoyl) oxy ]-3 β, 20α-yohimban-1 6-...

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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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... 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...

Ngày tải lên: 11/08/2014, 12:21