← Back to Patent Explorer
US5045559A Expired / Lapsed US ⏱️ 0.0 years remaining

Treatment of skin disorders

Assignee: Unilever Patent Holdings BV
•
Filing: 1989-05-15
•
Granted: 1991-09-03
•
Expires: 2009-05-15
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A therapeutic composition for the treatment of skin disorders comprises a therapeutically effective amount of a curative agent chosen from special esters of pyroglutamic acid, and mixtures thereof, in a therapeutically acceptable vehicle for topical application.

Inventors

  • 👤 Ian R. Scott

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 15:42
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/40; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/4906; A61K8/4913; A61P; A61P17/00; A61Q; A61Q19/00; A61Q19/008; A61Q5/00; A61Q5/006; A61Q7/00; A61K2800/00; A61K2800/20; A61K2800/28

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 230 words
A method for the treatment of a skin disorder in man and other mammals selected from the group consisting of: Ichthyosiform dermatoses, Conradi's syndrome, Localised hyperkeratotic conditions, Dandruff, Callous-forming disorders, Psoriasis, Eczema, Xerosis, Warts, Dermatomycoses, Pityriasis rosea and Pityriasis alba, Lichen planus and Lichen simplex chronicus, Cicatricial alopecia with dry flaky scalp, Darier's disease, Pruritus, Seborrhoeic dermatitis, Seborrhoeic eczema, Acne, and Scabies, said method comprising applying to involved areas of the body a composition comprising: (i) an effective amount of an ester of pyroglutamic acid having the structure: ##STR4## where R is a group: ##STR5## ##STR6## where R' and R" are the same or different and are each represented by H or the group: [(CH.sub.3).sub.u,(CH.sub.2 OH).sub.v, (CH.sub.2).sub.w,(CHCH.sub.3).sub.x,(CHOH).sub.y,(CH═CH).sub.z]--( 2) where either u or v is 1 and the other of them is zero w is zero, or an integer of from 1 to 21 x is zero, or an integer of from 1 to 4 y is zero, or an integer of from 1 to 2 z is zero, or an integer of from 1 to 4; and u+v+w+x+y+z is an integer of from 1 to 22 the subgroups within the group (2) being in any sequence provided that when the subgroup (CH═CH) is present, then the total number of carbon atoms in said group (2) will be from 10 to 22; and (ii) a therapeutically acceptable vehicle for the ester.
Claim 2
Independent Claim 230 words
A method for the treatment of a skin disorder in man and other mammals selected from the group consisting of: Ichthyosiform dermatoses, Conradi's syndrome, Localised hyperkeratotic conditions, Dandruff, Callous-forming disorders, Psoriasis, Eczema, Xerosis, Warts, Dermatomycoses, Pityriasis rosea and Pityriasis alba, Lichen planus and Lichen simplex chronicus, Cicatricial alopecia with dry flaky scalp, Darier's disease, Pruritus, Seborrhoeic dermatitis, Seborrhoeic eczema, Acne, and Scabies, said method comprising applying to involved areas of the body a composition comprising: (i) an effective amount of an ester of pyroglutamic acid having the structure: ##STR4## where R is a group: ##STR5## ##STR6## where R' and R" are the same or different and are each represented by H or the group: [(CH.sub.3).sub.u,(CH.sub.2 OH).sub.v, (CH.sub.2).sub.w,(CHCH.sub.3).sub.x,(CHOH).sub.y,(CH═CH).sub.z]--( 2) where either u or v is 1 and the other of them is zero w is zero, or an integer of from 1 to 21 x is zero, or an integer of from 1 to 4 y is zero, or an integer of from 1 to 2 z is zero, or an integer of from 1 to 4; and u+v+w+x+y+z is an integer of from 1 to 22 the subgroups within the group (2) being in any sequence provided that when the subgroup (CH═CH) is present, then the total number of carbon atoms in said group (2) will be from 10 to 22; and (ii) a therapeutically acceptable vehicle for the ester.
Claim 3
Dependent Claim 17 words
The method of claim 1, wherein the Ichthyosiform dermatoses are: Ichthyosis vulgaris, Sex-linked ichthyosis, or Epidermolytic ichthyosis.
Claim 4
Dependent Claim 20 words
The method of claim 1, wherein the localised hyperkeratolytic conditions are: Keratosis pilaris, Keratosis punctata, Keratosis senilis, or Keratosis striata.
Claim 5
Dependent Claim 20 words
The method of claim 1, wherein the callous-forming disorders are: Palmar and Plantar hyperkeratosis, Corns, or Palmar and Plantar keratoderma.
Claim 6
Dependent Claim 19 words
The method of claim 1, wherein the warts are: Keratotic warts, warts associated with Herpes, Keratoacanthoma or Warty naevus.
Claim 7
Dependent Claim 11 words
The method of claim 1, wherein the Dermatomyces is Tinea pedis.
Claim 8
Dependent Claim 51 words
The method of claim 1, wherein the ester of pyroglumatic acid is selected from the group consisting of: 2-[pyroglutamoyloxy]-propionic acid, methyl-2-[pyroglutamoyloxy]-acetate, ethyl-2-[pyroglutamoyloxy]-propionate, ethyl-2-[pyroglutamoyloxy]-n-butyrate, ethyl-2-[pyroglutamoyloxy]-n-iso-butyrate, ethyl-2-[pyroglutamoyloxy]-n-valerate, ethyl-2-[pyroglutamoyloxy]-n-caproate, ethyl-2-[pyroglutamoyloxy]-n-heptylate, ethyl-2-[pyroglutamoyloxy]-n-caprylate, ethyl-2-[pyroglutamoyloxy]-n-perlargonate, ethyl-2-[pyroglutamoyloxy]-3-hydroxybutyrate, iso-propyl-2-[pyroglutamoyloxy]-propionate, iso-propyl-2-[pyroglutamoyloxy]-n-caprylate, n-propyl-2-[pyroglutamoyloxy]-n-propionate, n-propyl-2-[pyroglutamoyloxy]-n-caprylate, lauryl-2-[pyroglutamoyloxy]-n-caprylate, stearyl-2-[pyroglutamoyloxy]-n-caprylate, stearyl-2-[pyroglutamoyloxy]-propionate, 12-hydroxystearyl-1-[pyroglutamoyloxy]-n-propionate, stearyl-2-[pyroglutamoyloxy]-stearate, palmityl-2-[pyroglutamoyloxy]-n-propionate, linoleyl-2-[pyroglutamoyloxy]-n-propionate, linoleyl-2-[pyroglutamoyloxy]-n-caprylate, glyceryl mono(2-[pyroglutamoyloxy]-n-propionate), glyceryl mono(2-[pyroglutamoyloxy]-n-caprylate), glyceryl di(2-[pyroglutamoyloxy]-n-propionate), and mixtures thereof.

References Cited (Backward Citations)

US3235457A Cited
US3836665A Cited
JPS57185209A Cited
JPS60214744A Cited
US4774255A Cited
US4772601A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-09-02 1995-03-04 1995-09-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-09-02 1999-03-04 1999-09-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-09-02 2003-03-04 2003-09-03 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag