BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 22 (end) pot

... Well-Being and Social Develop- ment. Relf, D., Ed., Timber Press, Portland, OR, 1992. 21. NASA. Man-Systems Integration Standards. NASA-STS-3000, 1995. 22. Garland, J.L. Adv. Space Res., 14: 38 3-3 86, ... – Ester Hexen-1-ol acetate, 2- >100 <10 – – – – Ether Ethylfuran, 2- <10 10–100 – 10–100 – – Furan – – <10 – <10 – Methylfuran, 2- 10–100 – <10 – <10 – Meth...

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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- -c...

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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 ... of poten- tial natural herbicides. In this chapter we present a selection of plant terpenoids belonging to natural and agro- ecosystems, from monoterpenes to triterpenes and steroids, with poten...

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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 ... and/or weed-control crop. This chapter reviews the results of studies on allelopathic activities of Mucuna pruriens with special emphasis on L-DOPA as a potential allelochemical with weed-suppre...

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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, nymphaeine, ... 1986. 14. Elakovich, S.D. and Yang, J., J. Chem. Ecol., 22, 220 9-2 219, 1996. 15. Sütfeld, R., Petereit, F., and Nahrstedt, A., J. Chem. Ecol., 22, 222 1-2 231, 1996. 16. W...

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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 ... 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 produce one or more p...

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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 ,2 2- dien-6β-ol- 3- one ... stigmast-4 ,2 2- 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; (...

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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 b...

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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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... 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 ... tissue of Artemisia annua support this view. Leaf tissues (stems excluded), were cut from 8-week-old potted plants and weighed. A half portion of the fresh plant material was extracted by...

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