BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 15 doc

... allowed to 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 more challenging than one might anticipate, if indeed 6-pentyl-2H-pyran-2-one is the physiolog- ically rel...

Ngày tải lên: 11/08/2014, 12:21

... 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 ... 1988. 15a. Uribe, S. and Peña, A. J. Chem. Ecol., 16, 1399, 1990. 15b. Peñuelas, J., Ribas-Carbo, M., and Giles, L. J. Chem. Ecol., 22, 801, 1996. 15c. Cruz-Ortega, R., Anaya, A.L., Gavilanes-Ruiz, .....

Ngày tải lên: 11/08/2014, 12:21

... application of 1 2-6 -6 N/P/K at a rate of 75 lb/100 linear feet of bed, followed by re-fertilization of the beds with 100 lb/100 linear feet of 1 5-0 -1 4 after each harvest. Insect, weed, and disease con- trol ... spray-drying of the basic solution. Fraction-2-proteins are recovered by adjusting the pH of the pale amber solution to 4.5 followed by cooling to 5-1 0°C for 24 h. As in...

Ngày tải lên: 11/08/2014, 12:21

... A-2, B-2, A-1, and B-1, while total avenacins 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 approximately 10 times higher with the improved extraction procedure, while yields of B-1 are approxi- mately 2 times higher. Decreased B-2...

Ngày tải lên: 11/08/2014, 12:21

... 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...

Ngày tải lên: 11/08/2014, 12:21

... 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 ... 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, 12, 13, 15, 16 1 Continuous...

Ngày tải lên: 11/08/2014, 12:21

... 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...

Ngày tải lên: 11/08/2014, 12:21

... 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

... 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...

Ngày tải lên: 11/08/2014, 12:21

... (Koto fresh K-20) 1/1000 c 15 (±)-CA 10 6 (+ )-( 1S,2S)-CA 5 6–7 (– )-( 1R,2R)-CA 5 6 (±)-AlloCA 10 8–10 (±)-AlloCA b 10 10–11 (+ )-( 1R,2S)-AlloCA 10 12–13 5 10–11 1.67 9 (– )-( 1S,2R)-AlloCA 10 8–9 5 ... 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-(+)-corona...

Ngày tải lên: 11/08/2014, 12:21