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Generated: May 26, 2018

DrugPatentWatch Database Preview

Details for Patent: 4,024,163

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Summary for Patent: 4,024,163
Title: Insecticides
Abstract:New insecticides are of formula: ##STR1## wherein R.sup.1 represents hydrogen or a methyl group; R.sup.2 represents hydrogen or a halogeno or lower alkyl group; R.sup.3 represents hydrogen or a halogeno, lower alkyl (which is different to R.sup.2 when R.sup.2 represents a lower alkyl group) or carbo(loweralkoxy) group which contains at least 2 carbon atoms in the lower alkoxy residue when R.sup.2 represents methyl or R.sup.2 and R.sup.3 together with the carbon atom to which they are attached represent a cycloalkylene ring having at least one endocyclic carbon to carbon double bond; with the proviso that (a) R.sup.2 and R.sup.3 each represent hydrogen only when R.sup.1 represents methyl and (b) R.sup.3 contains at least 2 carbon atoms when R.sup.1 and R.sup.2 each represent hydrogen; and R represents a group which form insecticidal esters with chrysanthemic acid e.g. 5-benzyl-3-furylmethyl, 3-phenoxybenzyl, .alpha.-cyano-3-phenoxybenzyl. The esters are prepared by forming the ester linkage conventionally or by a Wittig reaction using a 3-formyl- or 3-acetyl-2,2-dimethyl cyclopropane carboxylic acid esterified with the desired residue or by an alkyl group which is subsequently converted to the desired residue.
Inventor(s): Elliott; Michael (Harpenden, EN), Janes; Norman Frank (Luton, EN), Pulman; David Allen (Harpenden, EN)
Assignee: National Research Development Corporation (London, EN)
Application Number:05/497,056
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 4,024,163
Patent Claim Types:
see list of patent claims
Compound; Composition; Use;

Drugs Protected by US Patent 4,024,163

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Patent Submitted
Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Patent Submitted

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Foreign Priority and PCT Information for Patent: 4,024,163

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
24809/72May 25, 1972
24810/72May 25, 1972
30838/72Jun 30, 1972
59184/72Dec 21, 1972

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Serving hundreds of leading biopharmaceutical companies globally:

McKinsey
Harvard Business School
Boehringer Ingelheim
Cipla
Cantor Fitzgerald
AstraZeneca
Chubb
Daiichi Sankyo
Fish and Richardson

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