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US3716583A Expired / Lapsed US ⏱️ 0.0 years remaining

Phenoxy carboxylic acid derivative

Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1970-04-07
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Granted: 1973-02-13
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Expires: 1990-04-07
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Abstract

Abstract Novel anti-atherosclerosis agents having the formula, WHEREIN TYPICAL EXAMPLES OF R1 and R2 are hydrogen, C1-C8 alkyl, phenyl, benzyl and phenethyl, or R1 and R2 may form cycloalkylidene together with a carbon atom bonded therewith; R3 and R4 each is hydrogen or C1-C4 alkyl; Y is hydroxyl, C1-C4 alkoxy, phenoxy or an amine residue; A is hydrogen or a group of the formula, WHEREIN R3, R4 and Y have the same meanings as defined above; and D and E each is hydrogen or halogen. These compounds are produced, for example, by reacting a bisphenolic compound of the formula, in the presence of an alkali. Alternatively, they are produced by reacting the bisphenolic compound with Alpha -halogeno- or Alpha -hydroxycarboxylic acid derivative of the formula, WHEREIN R1, R2, R3, R4, D, E and Y have the same meanings as defined above; and X is halogen or hydroxyl.

Inventors

  • 👤 Y Nakamura
  • 👤 S Aono
  • 👤 K Agatsuma
  • 👤 Y Tanaka

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 04:49
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/40; C07C59/58; C07C59/72; C07C51/00; C07C51/347; C07C51/367; C07C51/41; C07C51/412; C07C59/64; C07C59/66; C07C59/68

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 7 words
Phenoxyaliphatic carboxylic acid derivatives of the formula
Claim 2
Dependent Claim 7 words
Phenoxyaliphatic carboxylic acid derivatives of the formula
Claim 3
Dependent Claim 7 words
Phenoxyaliphatic carboxylic acid derivatives of the formula,
Claim 4
Dependent Claim 7 words
Phenoxyaliphatic carboxylic acid derivatives of the formula,
Claim 5
Dependent Claim 7 words
Phenoxyaliphatic carboxylic acid derivatives of the formula,
Claim 6
Dependent Claim 7 words
Phenoxyaliphatic carboxylic acid derivatives of the formula,
Claim 7
Dependent Claim 22 words
Phenoxyaliphatic carboxylic acid derivatives according to claim 3, wherein R3 is methyl, R4 is methyl, ethyl or n-propyl, and Y is hydroxyl.
Claim 8
Dependent Claim 7 words
Phenoxyaliphatic carboxylic acid derivative of the formula,
Claim 9
Dependent Claim 7 words
Phenoxyaliphatic carboxylic acid derivative of the formula,
Claim 10
Dependent Claim 7 words
Phenoxyaliphatic carboxylic acid derivative of the formula,
Claim 11
Dependent Claim 7 words
Phenoxyaliphatic carboxylic acid derivative of the formula,

References Cited (Backward Citations)

US3262850A Cited
US3470234A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-02-13 1976-08-14 1977-02-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-02-13 1980-08-14 1981-02-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-02-13 1984-08-14 1985-02-13 $7700.00 Window Closed / Lapsed

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