Method of controlling the European corn borer with trewiasine

• US 4,315,929 A
• Filed: 01/27/1981
• Issued: 02/16/1982
• Est. Priority Date: 01/27/1981
• Status: Expired due to Fees

• Current Assignee: United States Department Of Agriculture
• Original Assignee: United States Department Of Agriculture
• Inventors: Powell, Richard G., Smith, Cecil R. Jr., Freedman, Bernard
• Primary Examiner(s): ROBINSON, ALLEN JAY
• Application Number:
  US06/228,852
• Time in Patent Office: 385 Days
• Field of Search: 424/248.54
• US Class Current: 514/229.5
• CPC Class Codes: A01N 43/90 having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
• CPC Class Codes: A01N 65/18 Euphorbiaceae [Spurge family], e.g. ricinus [castorbean]
• CPC Class Codes: C07D 498/18 Bridged systems

Abstract

A novel maytansinoid compound discovered in the seed tissue of Trewia nudiflora has been found to be effective in controlling a common insect pest, the European corn borer. This compound is represented by the formula: ##STR1## and is characterized by a distinguishing methoxy group on the C-15 carbon.

Claims

1. A method for controlling insect pests, wherein said pests are European corn borers, comprising applying to substrates susceptible to infestation by said pests an insecticidally effective amount of the pure or substantially pure compound of the formula. ##STR5##

2. A method as described in claim 1 wherein said substrates are grain crop plants.

3. A method as described in claim 1 wherein said compound is applied in combination with a suitable carrier.