BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 5 ppt

... deriva-tives.42, 45, 5 7 -5 9 However, it takes twice as much of the 6-methyl ethers to be as toxic as theirunmethylated counterparts. Similarly, the methylated terpenoids in leaves, hemigossy-polone-6-methyl ... (PAL), chalcone synthase (CHS), caffeic acid O-methyltransferase (C-OMT), 3-hydroxy-3-methyl glutaryl CoA reductase (HMGR), and δ-cadinene synthase ( - CS) in each of the four cultivars at 12, ... its spread.41,4 9 -5 3 HMGR is a key enzyme in the formationof mevalonate, the sole precursor for terpenoid biosynthesis. 54 ,55 δ-CS is the enzyme thatcatalyzes the formation of δ-cadinene, the...

... 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 ... 10 5 M;40%, 10–6M; 44%, 10–7M; 53 : 44%, 10–4M; 76%, 10 5 M; 48%, 10–7M). Compounds 51 and 52 are the most active at lower concentrations (51 : 72%, 10–9M; 52 : 52 %, 10–9M) (Figure 2.12).In ... follow-ing: 24 and 25 have related structures and both showed strong inhibitory effects at highconcentration on germination (24, –78%, 10 5 M; 25, 50 %, 10–4M) and shoot (24, – 35% ,10–6M; 25, ...

... 48 1.3 31 1 .5 1 05 39 25 Paederia scandens (L) 97 46 1 .5 86 1.2 123 92 12 .5 Paederia scandens (stem) 98 52 0 .5 96 1.1 143 98 10Paulowinia tomentosa (L) 100 53 1.2 45 1 .5 119 61 12 .5 Paulowinia ... prurience (stem) 96 45 1.1 38 1.6 96 54 10Pisum sativum (S) 99 45 0 .5 99 1.1 1 15 38 10Pueraria lobata (L)$$82 72 5. 0 12 2.2 73 45 12 .5 Pueraria lobata (R) 95 32 0 .5 103 1.4 95 68 10Pueraria ... 1.4 142 0.8 132 55 12 .5 Sorghum bicolor (R)$ 98 131 1.0 133 0.8 84 43 12 .5 Sorghum bicolor (S) 85 60 1.3 39 1.3 104 55 10Sorghum sudanense (R) 100 132 1.0 1 35 0.8 106 58 12 .5 Sorghum sudanense...

... Inhibition (%) (ppt) (control = 0%)Lemna minor leaf 25 66leaf 12 .5 47leaf 2 .5 22root and rhizome 25 67root and rhizome 12 .5 35 root and rhizome 2 .5 22Lettuce seedling leaf 12 .5 100leaf 2 .5 71root ... Manage., 26, 5 0 -5 5, 1988.6. Cameron, H.J. and Julian, G.R., J. Chem. Ecol., 6, 98 9-9 95, 1980.7. Einhellig, F.A., Leather, G.R., and Hobbs, L.L., J. Chem. Ecol., 11, 6 5- 7 2, 19 85. 8. Cullen, ... hyperoside, quercetin 4 - -xyloside, 3-methylquercetin 3 - -xyloside19Dienoic, trienoic, and tetraenoic acids20α-aminoadipic acid21β-sitosterol, gallic acid, 1-hexacosanol22Nupharin,...

... fresh K-20) 1/1000c 15 (±)-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 12–13 5 10–111.67 9(– )-( 1S,2R)-AlloCA 10 8–9 5 9–101.67 ... 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 ... by 2- uoro-OPC-8:0 in the cellexpansion-inducing assay was first detected; and (6) 3-oxa-OPC-8:0, -6 :0, and -4 :0 alsoexhibited weak tuber-inducing activity. The last result suggests that β-oxidation...

... GS.74, 75 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 ... herbicides (pendimetha-lin [N-(1-ethylpropyl )-3 ,4-dimethyl-2,6-dinitrobenzenamine]; thiobencarb [S-[(4-chlorophe-nyl)methyl]-diethylcarbamothioate]; quinclorac (3,7-dichloro-8-quinolinecarboxylic ... [methyl 2-[ [[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfo-nyl]methyl]benzoate]; or bentazon [ 3-( 1-methylethyl )-( 1H )-2 ,1,3-benzothiadiazin-4(3H)-one© 1999 by CRC Press LLC plants. 45 ...

... 331, 53 . 1993)33. ElSohly, H.N., Croom Jr., E.M., El-Feraly, F.S., and El-Sherei, M.M., J. Nat. Prod., 53 , 156 0, 1990.34. Vonwiller, S.C., Haynes, R.K., King, G., and Wang, H J., Planta Med., 59 , ... mobile phase was 0.01M NaH2PO4 buffer (pH7.00):MeOH eluted in gradient from 59 :41 to 55 : 45 over a period of 25 min; flow rate was1 ml/min; injection volume was 100 µl; detection γ was at 260 ... Technol., 5, 117, 1991.23. Duke, M.V., Paul, R.N., Elsohly, H.K., Sturtz, G., and Duke, S.O., Intl. J. Plant Sci., 155 , 3 65, 1994.24. Ferreira, J.F.S. and Janick, J., Intl. J. Plant Sci., 156 , 801,...