Enantioselective Herbicidal Activity of Chiral α-Methylbenzylphenylureas against Cyperaceae and Echinochloa Paddy Weeds

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概要

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• Optically active α-methylbenzylphenylureas were synthesized and tested for their herbicidal activities against barnyardgrass and Cyperaceae paddy weeds in a greenhouse to evaluate the cross intergenus phytotoxicity between rice and barnyardgrass and the enantioselective phytotoxicity to the weeds. Several compounds controlled the growth of the weeds, and a suitable enantiomer for successful weed control was dependent on the type of weed and on the substituent at the aniline moiety. The (R)-2-isoPr and (R)-2-tert-Bu derivatives significantly controlled barnyardgrass and both annual and perennial Cyperaceae paddy weeds. The (R)-2-Et and (R)-2-CF_3 derivatives showed the strong herbicidal activity against perennial Cyperaceae paddy weeds, while the (S)-enantiomers of the unsubstituted and fluoro derivatives were active against barnyardgrass. The enantioselectivity of the most potent compounds was high.

• 社団法人日本農芸化学会の論文
• 1998-11-23

著者

• OMOKAWA Hiroyoshi

  Weed Science Research Institute, Faculty of Agriculture, Utsunomiya University

• KURAMOCHI HITOSHI

  Weed Science Center, Utsunomiya University

• Omokawa H

  Utsunomiya Univ. Utsunomiya Jpn

• Omokawa Hiroyoshi

  Weed Control Research Institute Faculty Of Agriculture Utsunomiya University

• PYOO HwanJae

  Weed Science Center, Utsunomiya University

• Pyoo Hwanjae

  Weed Science Center Utsunomiya University

• Kuramochi Hitoshi

  Weed Science Center Utsunomiya University

• Ryoo Jae

  Weed Science Center Utsunomiya University

関連論文

• Substituent Effect on Photosynthesis of N^2-α-Substituted Benzyl-N^4-alkyl-2,4-diamino-6-chloro-s-triazines and Their Phytotoxic Property(Pesticide Chemistry)
• Bud sprouting of torpedograss (Panicum repens L.) as influenced by the rhizome moisture content
• Selective Phytotoxicity of N-Allyl-N-α-substituted Benzylbenzenesulfonamides(Pesticide Chemistry)
• Enantioselective Relieving Activity of α-Methylbenzylphenylureas toward Bensulfuron-methyl Injury to Rice (Oryza sativa)
• Enantioselective Herbicidal Activity of Chiral α-Methylbenzylphenylureas against Cyperaceae and Echinochloa Paddy Weeds
• Herbicidal Activity and Phytotoxic Properties of N-Alkyl-N'-(α,α-dimethylbenzyl)-2, 4-diamino-6-chloro-s-triazines(Pesticide Chemistry)
• Phytotoxic Activity of Substituted α-Methylbenzylamino Derivatives of 2-Chloro(or Methylthio)-4-ethylamino-s-triazines(Pesticide Chemistry)
• PSII Inhibitory Activity of 2,4-Diamino-6-chloro-s-triazines with a Chiral sec-Butyl and/or α-Methylbenzyl Group(Pesticide Chemistry)
• Effects of Plant Growth Regulators on Shoot Growth and Flowering of a Perennial Paddy Weed, Sagittaria Rygmaea Miq.
• Root growth profiles of Aveneae and Poeae plants in optically active α-methylbenzyl-3-p-tolylurea media
• Chiral effects of (R)-/(S)-1-(α-methylbenzyl)-3-(p-tolyl)urea on the free amino acid levels in the root tips of rice and wheat
• Structure-Herbicidal Activity Relationship of α-Phenylsulfonyl Propanamide
• Phytotoxic Activity of N-Phenylsulfonylbenzamides
• Phytotoxic Properties of α-Substituted Benzylamino-s-triazinest
• Phytotoxic Activity of N-Benzylbenzenesulfonamides

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