BIOLOGICALLY ACTIVE NATURAL PRODUCTS: AGROCHEMICALS - CHAPTER 6 ppsx

... 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 -6 -ol- 3- one ... (H -6 ) Stigmast-4,22-dien -6 -ol- 3- one 166 – 16 8 168 0, 165 5 6. 16 (1H, s) (H-4) 199 .61 (C-3), 171.81 (C-5), 5.14 (1H, dd) (H-23) 137.97 (C-22), 129.54 (C-23), 5.0...

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... communis (L) 91 62 4.5 12 1.8 132 65 10 Garium spurium (W)$ 92 65 2.1 29 1.8 85 58 10 Houttuynia cordata (R) 95 66 0.9 68 1.5 1 26 50 10 Houttuynia cordata (S)$$$ 98 33 3 .6 9 3.4 62 26 5 © 1999 by ... 95 68 10 Pueraria lobata (stem)$ 98 57 3.4 17 3.5 111 32 10 Trifolium repens (S) 98 49 1.8 28 1.9 105 56 10 Vicia angustifolia (S)$ 97 60 3 .6 16 2.8 1 26 22 6. 7 Vicia hirsuta...

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... 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 highly ... Agric. Food Chem., 28, 64 4 -6 46, 1980. 5. Cheng, T.S. and Riemer, D.N., J. Aquat. Plant Manage., 26, 5 0-5 5, 1988. 6. Cameron, H.J. and Julian, G.R., J. Chem. Ecol., 6, 98 9-9...

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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 ... situations. 1 46 Mixtures of glufosinate alone and glufosinate plus several other herbicides (pendimetha- lin [N-(1-ethylpropyl )-3 ,4-dimethyl-2 , 6- dinitrobenzenamine]; thiobencarb [S-[(...

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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- 1 6- en-19-oic acid (28), (–)-grandifloric acid, (–)-angeloylgrandifloric ... effects are presented in Figure 2.8). The most active compound was (–)-kaur- 1 6- en-19-oic (28) which, at a concentration of 10 –3 M, reduced germination (– 36% ) and root length (–29%) of L. sa...

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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...

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... (H 2 O) – 6 STS (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 ... by 2- uoro-OPC-8:0 in the cell expansion-inducing assay was first detected; and (6) 3-oxa-OPC-8:0, -6 :0, and -4 :0 also exhibited weak tuber-inducing activity....

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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 ... 187. 16. Muller, W.H., Lorber, P., and Haley, B., Bull. Torrey Bot. Club, 95, 415, 1 968 . 17. Klayman, D.L., Science, 228, 1049, 1985. 18. Chen, P.K. and Leather, G.R., J. Chem. Ecol., 1...

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... 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 ) , 42 .6( t,C-2), 48.4(d,C-4), 68 .1(d,C-3), ... 1.22(6H,s,H-9 and H-10), 3.72(1H,dt,J = 10.4,4.3Hz,H-3). 13 C NMR(50MHz,CDCl 3 , TMS): δ22.0(q,C-9), 23.8(q,C-10), 27.1(t,C-5), 30.1(q,C-7), 31.4(d,C-1), 34 .6( t,C -6 )...

Ngày tải lên: 11/08/2014, 12:21