EP0365530A1 - Pharmaceutical compositions containing higher alcohols for the treatment of prostatic pathologies - Google Patents

Pharmaceutical compositions containing higher alcohols for the treatment of prostatic pathologies

Info

Publication number
EP0365530A1
EP0365530A1 EP88903241A EP88903241A EP0365530A1 EP 0365530 A1 EP0365530 A1 EP 0365530A1 EP 88903241 A EP88903241 A EP 88903241A EP 88903241 A EP88903241 A EP 88903241A EP 0365530 A1 EP0365530 A1 EP 0365530A1
Authority
EP
European Patent Office
Prior art keywords
alcohols
pharmaceutical compositions
extract
unsaturated
chain saturated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP88903241A
Other languages
German (de)
French (fr)
Inventor
Giancarlo Jommi
Luisella Verotta
Maria José MAGISTRETTI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Consiglio Nazionale delle Richerche CNR
IDB Holding SpA
Original Assignee
Consiglio Nazionale delle Richerche CNR
IDB Holding SpA
Inverni Della Beffa SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Consiglio Nazionale delle Richerche CNR, IDB Holding SpA, Inverni Della Beffa SpA filed Critical Consiglio Nazionale delle Richerche CNR
Publication of EP0365530A1 publication Critical patent/EP0365530A1/en
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/045—Hydroxy compounds, e.g. alcohols; Salts thereof, e.g. alcoholates
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
    • A61K36/18—Magnoliophyta (angiosperms)
    • A61K36/88—Liliopsida (monocotyledons)
    • A61K36/889—Arecaceae, Palmae or Palmaceae (Palm family), e.g. date or coconut palm or palmetto
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P13/00—Drugs for disorders of the urinary system
    • A61P13/02—Drugs for disorders of the urinary system of urine or of the urinary tract, e.g. urine acidifiers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P15/00—Drugs for genital or sexual disorders; Contraceptives

Definitions

  • the invention refers to pharmaceutical compositions useful for treating pathologic conditions of the prostata containing a mixture of long chain alcohols, saturated and unsaturated, sterolic and triterpenic, extracted from Serenoa repens fruits, and to the respective processes of preparation.
  • Serenoa repens Bart.
  • Small, small palm also known as Sabal serrulatum and Sabal serrulata Roem. and Schult., typical of the south-eastern United States flora
  • Their use is cited for instance in "Dispensatory of the United States of America” (J.B. Lippincot Co., Philadelphia, 1960, 25° Ed., 2, 1840) and is reported in the American Pharmacopeia (National Formulary VIII, 8° Ed., 457).
  • This extract is composed for 85% by a fatty acids mixture (essentially capronic, caprinic, decanoic, lau ric, myristic, palmitic, oleic and stearic acids) and for 15% toy a mixture of ethyl and methyl esters of said acids, by long-chain saturated and unsaturated alcohols in free and esterified form with the above acids and by sterols and triterpenic alcohols which are also present in free and esterified form.
  • a fatty acids mixture essentially capronic, caprinic, decanoic, lau ric, myristic, palmitic, oleic and stearic acids
  • the alcoholic fraction turns out to be composed by the alcohols n-do-cosanol (C 22 H 45 OH), n-tricosanol (C 23 H 47 OH), n-tetraco- sanol (C 24 H 49 OH), n-hexacosanol (C 26 H 53 OH), n-octacosanol (C 28 H 57 OH), phytal, farnesal, geranylgeraniol, stigmasterol, ⁇ -sitosterol, cycloartenol, lupeal, 24-methylenecycloartanol and four polyprenols having general structure (I), whose relative ratios will be reported hereinafter.
  • I general structure
  • the total lipophilic extract obtained according to known methods is treated with alkali in hydro-alcoholic mixture and the acidic mixture is discarded bv filtration of the formed salts.
  • the mixture of the alcohols is obtained by extraction of the filtrate with a water immiscible solvent and evaporation to dryness of the organic phase.
  • the total lipophilic extract may be preventively purified from the acidic component by dissolution of the extract in an alcohol (e.g. methyl alcohol) and elution on a basic ion-exchange resin, e.g. Amberlite IRA 400 R or Relite 2A R .
  • a basic ion-exchange resin e.g. Amberlite IRA 400 R or Relite 2A R .
  • the eluted neutral fraction is then subjected to treatment with concentrated alkalin and extraction with a water immiscible solvent.
  • the alcohols mixture of the present invention which is obtained with a yield of about 0.3-0.5% by weight with respect to the starting vegetal material, according to different chromatographic techniques and careful spectroscopic analysis (MS, H-NMR, C-NMR), is composed by three classes of compounds: a) saturated and unsaturated long-chain alcohols containing a primary alcoholic moiety, totalling 20% of the mixture weight, having the relative composition reported hereinafter; b) sterol and triterpenic alcohols, amounting to 40% of the mixture, having the relative composition reported hereinafter; c) unsaturated alcohols having the polyprenolic structure (I), amounting to 40% of the mixture weight, having the relative composition reported hereinafter.
  • the quantitative compositions of a-b-c may sometimes show variations according to the vegetal material used.
  • the antiandrogenic activity of the fraction obtained according to the invention has been tested in the orchiectomized rat treated with exogenous androgens.
  • mole rats were orchiectomized and subcutaneously treated for 6 days with testosterone propionate dissolved in olive oil at the dose of 12 mg/die.
  • the animals were treated with doses of 50 mg/die of the above alcoholic fraction or 400 mg/die of total lipophilic extract of S. repens (EL) as reference.
  • ventral prostata and the seminal vesicles of the treated animals and of the controls were weighed.
  • the extract of the invention is conveniently formulated in pharmaceutical compositions which may be administered by oral or rectal route, using conventional methods and excipients, such as those described in "Remington's Pharmaceutical Sciences Handbook", Ralph Pub. Co., N.Y., U.S.A.
  • the daily posology will depend of course on the patient's conditions (weight, sex, age) and on the seriousness of the disease: it will however generally range from 20 to 100 mg, divided in two or more administrations per day.
  • the percolates were concentrated under vacuum up to total elimination of the solvent and the residue (90 g) was treated for 48 hours at room temperature with 4 l of methanol and 1,2 l of 2,5 N KOH.
  • the reaction mixture was filtered from the separated solid and the mother liquors were diluited with 15 l of purified water.
  • the neutral methanolic eluate containing 13.5 g of residue, was concentrated under vacuum up to a volume of 300 ml and treated at room temperature for 24 hours with 100 ml of 2.5 N KOH aqueous solution.
  • the reaction mixture was filtered from the separated solid and the mother liquors, diluted with 1.5 l of water, were extracted with 2 x 200 ml di methylene chloride.
  • the organic phases were collected, washed to neutrality with water and dried (N 22 SO 4 ). After evaporation under vacuum
  • EXAMPLE 3 Tablet pharmaceutical composition containing the preparation consisting of natural alcohols. Each 100 mg tablet contains: Alcoholic fraction extracted from S. repens mg 20
  • Crospovidone mg 20 Sodium carboxymetylcellulose mg 10 Polyvinylpyrrolidone PM 30.000 mg 3
  • EXAMPLE 4 Suppository pharmaceutical formulation containing the preparation consisting of natural alcohols Each 1.5 g suppository contains:

Abstract

Compositions pharmaceutiques dont le principe actif est la fraction alcoolique de l'extrait lipophile total de fruits de Serenoa repens soumis à une hydrolyse alcaline suivie d'extraction par des solvants non miscibles à l'eau. Cet extrait a de meilleures propriétés anti-androgéniques que l'extrait lipophile total.Pharmaceutical compositions in which the active ingredient is the alcoholic fraction of the total lipophilic extract of Serenoa repens fruits subjected to alkaline hydrolysis followed by extraction with solvents immiscible with water. This extract has better anti-androgenic properties than the total lipophilic extract.

Description

PHARMACEUTICAL COMPOSITIONS CONTAINING HIGHER ALCOHOLS FOR THE TREATMENT OF PROSTATIC PATHOLOGIES
The invention refers to pharmaceutical compositions useful for treating pathologic conditions of the prostata containing a mixture of long chain alcohols, saturated and unsaturated, sterolic and triterpenic, extracted from Serenoa repens fruits, and to the respective processes of preparation.
The fruits of Serenoa repens (Bart.) Small, small palm also known as Sabal serrulatum and Sabal serrulata Roem. and Schult., typical of the south-eastern United States flora, have been used for a long time in phytotherapy for the treatment of functional troubles connected to prostatic hypertrophy. Their use is cited for instance in "Dispensatory of the United States of America" (J.B. Lippincot Co., Philadelphia, 1960, 25° Ed., 2, 1840) and is reported in the American Pharmacopeia (National Formulary VIII, 8° Ed., 457).
Processes of preparation of extracts of said fruits have been recently patented, disclosing the use of solvents having low polarity (FR-A-2.480.754) or of inert gas in hypercritical conditions (Italian patent application N. 20813 A/86).
By said processes, a total lipophilic extract, with a ponderal yield of 10% starting from the vegetal material, endowed with curative properties of illnesses caused by benign prostatic hypertrophy is obtained.
This extract is composed for 85% by a fatty acids mixture (essentially capronic, caprinic, decanoic, lau ric, myristic, palmitic, oleic and stearic acids) and for 15% toy a mixture of ethyl and methyl esters of said acids, by long-chain saturated and unsaturated alcohols in free and esterified form with the above acids and by sterols and triterpenic alcohols which are also present in free and esterified form. Particularly, the alcoholic fraction turns out to be composed by the alcohols n-do-cosanol (C22H45OH), n-tricosanol (C23H47OH), n-tetraco- sanol (C24H49OH), n-hexacosanol (C26H53OH), n-octacosanol (C28H57OH), phytal, farnesal, geranylgeraniol, stigmasterol, β-sitosterol, cycloartenol, lupeal, 24-methylenecycloartanol and four polyprenols having general structure (I), whose relative ratios will be reported hereinafter.
It has now been found that it is possible to enhance the pharmacological activity of the total extract by subjecting it to alkaline hydrolysis in suitable conditions and seprarating the alcoholic fraction from the acidic one, which is discarded.
According to a first embodiment of the process of the invention, the total lipophilic extract obtained according to known methods is treated with alkali in hydro-alcoholic mixture and the acidic mixture is discarded bv filtration of the formed salts. The mixture of the alcohols is obtained by extraction of the filtrate with a water immiscible solvent and evaporation to dryness of the organic phase.
Alternatively, when a decrease of the solvent consumption is desired, the total lipophilic extract may be preventively purified from the acidic component by dissolution of the extract in an alcohol (e.g. methyl alcohol) and elution on a basic ion-exchange resin, e.g. Amberlite IRA 400R or Relite 2AR. The eluted neutral fraction is then subjected to treatment with concentrated alkalin and extraction with a water immiscible solvent.
The alcohols mixture of the present invention, which is obtained with a yield of about 0.3-0.5% by weight with respect to the starting vegetal material, according to different chromatographic techniques and careful spectroscopic analysis (MS, H-NMR, C-NMR), is composed by three classes of compounds: a) saturated and unsaturated long-chain alcohols containing a primary alcoholic moiety, totalling 20% of the mixture weight, having the relative composition reported hereinafter; b) sterol and triterpenic alcohols, amounting to 40% of the mixture, having the relative composition reported hereinafter; c) unsaturated alcohols having the polyprenolic structure (I), amounting to 40% of the mixture weight, having the relative composition reported hereinafter.
The quantitative compositions of a-b-c may sometimes show variations according to the vegetal material used. The antiandrogenic activity of the fraction obtained according to the invention (FA), has been tested in the orchiectomized rat treated with exogenous androgens. In particular, mole rats were orchiectomized and subcutaneously treated for 6 days with testosterone propionate dissolved in olive oil at the dose of 12 mg/die. Contemporaneously to the steroid treatment, the animals were treated with doses of 50 mg/die of the above alcoholic fraction or 400 mg/die of total lipophilic extract of S. repens (EL) as reference.
At the end of the experiment, the ventral prostata and the seminal vesicles of the treated animals and of the controls were weighed.
Both the tested products decreased in a statistically significant way the weight of these organs, as shown in Table 1. However, the alcoholic fraction, administered at a dose 8 time lower than that of the total extract, has surprisingly induced a larger percent decrease of the organs weight.
Table 1 - Antiandrogenic effect of the total lipophilic extract (EL) of S. repens and of the alcoholic fraction (FA) contained therein on the weight of the ventral prostata and of the seminal vesicles of orchiectomized rats treated with 12 mg/die of testosterone palmitate (TP).
The absence of toxicity and the high antiandrogenic activity in the animal make the application of the extract containing the higher alcohols of the invention particularly advantageous in the therapy of benign prostatic adenoma.
For this aim, the extract of the invention is conveniently formulated in pharmaceutical compositions which may be administered by oral or rectal route, using conventional methods and excipients, such as those described in "Remington's Pharmaceutical Sciences Handbook", Hack Pub. Co., N.Y., U.S.A. The daily posology will depend of course on the patient's conditions (weight, sex, age) and on the seriousness of the disease: it will however generally range from 20 to 100 mg, divided in two or more administrations per day.
The following examples illustrate the invention without limiting it.
EXAMPLE 1 Finely ground fruits and seeds of S. xepens (1 kg) were extracted at room temperature with four 1,3 l portions of n-hexane, each extraction being carried out for 12 hours.
The percolates were concentrated under vacuum up to total elimination of the solvent and the residue (90 g) was treated for 48 hours at room temperature with 4 l of methanol and 1,2 l of 2,5 N KOH. The reaction mixture was filtered from the separated solid and the mother liquors were diluited with 15 l of purified water.
Two extractions with two 3 l portions of methylene chloride were carried out and the organic phases were washed with 2 l of a solution made acid by IN hydrochloric acid, then with water and finally dried (Na2SO4). After evaporation, 3 g of a pole yellow oily residue were obtained, comprising a mixture of alcohols. The mixture of the compositions has been evaluated by the following methods:
1 g of product, subjected to column chromatography containing 100 g of silica gel, gave, after elution with methylene chloride and increasing amounts of ethyl acetate, three fractions:
- Fraction 1 (200 mg). At the GLC-MS exam, it shows after silylation the following composition: relative M+ abundance farnesol 0.18 294 phytol 8.83 368 geranylgeraniol 6.88 362 n-C22H45OH 0.18 383 (M-15) n-C23H47OH 0.33 411 (M-15) n-C24H49OH 1.00 425 (M-15) n-C26H53OH 1.44 439 (M-15) n-C28H57OH 2.20 467 (M-15) whose retention times and mass spectra have been compared with authentic samples. - Fraction 2 (400 mg). After treatment with 3 ml of acetic anhydride in 2 ml of pyridine and fractioning on column containing 80 g of silica gel impregnated with 10% silver nitrate (eluent petroleum ether and increasing amounts of methylene chloride), the following sterolic and triterpenic alcohols in form of acetate have been isolated from this fraction: relative M+ p.f. ºC abundance stigmasterol acetate 1.62 394 (M-AcOH) 142° β-sitosterol 12.23 396 (M-AcOH) 126-7° cycloartenol 3,97 468 123° lupeol 2.40 468 220°
24-methylenecycloartanol 1.00 482 104-5°
The chemico-physical and spectroscopic features (IR, 1H-NMR, MS) of the isolated products turn out to beidentical to those of authentic sample.
- Fraction 3 (400 mg). This fraction, composed by polyprenals, has been fractioned by column chromatography containing 90 g of Lichroprep RP 18R (Merck) with 90% aqueous acetone.
The following polyprenols having general structure (I) have been isolated: relative M+ (as TMS-derivative) abundance n = 1 1.00 498 n = 2 7.00 566 n = 3 54.00 634 n = 4 3.80 702 whose configuration has been determined by means of proton and carbon nuclear magnetic resonance. In particular, the 13C-NMR pectra of the polyprenols show the following methyl signals:
17.7 (terminal trans Me), 25.7 (terminal cis Me),
23.4 (3 cismethyl signal), 16.0 (n trans methyl signals), 23.4 ppm (Me in C-3). Qualitatively and quantitatively identical results were obtained by carrying out the extraction with hypercrytical CO2 and subjecting the extract to the above described treatments. EXAMPLE 2
The residue (90 g) obtained from the hexane extraction according to Example 1 of 1 kg of fruits of Serenoa repens, was taken up with 2.2 1 of methanol. The obtained solution was filtered from the undissolved particles and eluted on a column containing 3 l of strong basic resin Amberlite IRA 400R.
The neutral methanolic eluate, containing 13.5 g of residue, was concentrated under vacuum up to a volume of 300 ml and treated at room temperature for 24 hours with 100 ml of 2.5 N KOH aqueous solution. The reaction mixture was filtered from the separated solid and the mother liquors, diluted with 1.5 l of water, were extracted with 2 x 200 ml di methylene chloride. The organic phases were collected, washed to neutrality with water and dried (N22SO4). After evaporation under vacuum
3 g of oily residue were obtained, composed by a mixture of alcohols identical to that described in Example 1.
EXAMPLE 3 Tablet pharmaceutical composition containing the preparation consisting of natural alcohols. Each 100 mg tablet contains: Alcoholic fraction extracted from S. repens mg 20
Granular cellulose mg 40
Crospovidone mg 20 Sodium carboxymetylcellulose mg 10 Polyvinylpyrrolidone PM 30.000 mg 3
Colloidal silica mg 5 Talc mg 2
EXAMPLE 4 Suppository pharmaceutical formulation containing the preparation consisting of natural alcohols Each 1.5 g suppository contains:
Alcoholic fraction extracted from S. repens mg 50 Semisynthetic glycerides F.U. (excipient for suppositories) mg 1450

Claims

1. Pharmaceutical compositions endowed with antiandrogenic activity containing as the active principle long-chain saturated and unsaturated, sterolic and triterpenic alcohols extracted from Serenoa repens fruits.
2. Pharmaceutical compositions according to claim 1, characterized in that the active principle consists for 20% of long chain saturated or unsaturated alcohols containing a primary hydroxy moiety, triterpenic alcohols having polyprenolic structure of formula I
3. Pharmaceutical compositions according to claim 1 or 2 suited for oral or rectal administration.
4. Extract of Serenoa repens fruits consisting for 20% of long chain saturated and unsaturated alcohols containing a primary hydroxy moiety, triterpenic alcohols having polyprenolic structure of formula I
5. A process for the preparation of Serenoa repens extracts consisting of long chain saturated and unsaturated, sterolic and triterpenic alcohols characterized in that the total liphohilic extract, optionally preventively purified from the acidic component by elution on ion-exchange resins, is subjected to alkaline hydrolysisin hydroalcoholic solvents followed by optional filtration and extraction of the filtrate with a water immiscible solvent.
EP88903241A 1987-04-17 1988-04-09 Pharmaceutical compositions containing higher alcohols for the treatment of prostatic pathologies Pending EP0365530A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT20181/87A IT1203934B (en) 1987-04-17 1987-04-17 PHARMACEUTICAL COMPOSITIONS CONTAINING HIGHER ALCOHOLS FOR THE TREATMENT OF PROSTATE DISEASES
IT2018187 1987-04-17

Publications (1)

Publication Number Publication Date
EP0365530A1 true EP0365530A1 (en) 1990-05-02

Family

ID=11164486

Family Applications (2)

Application Number Title Priority Date Filing Date
EP88903241A Pending EP0365530A1 (en) 1987-04-17 1988-04-09 Pharmaceutical compositions containing higher alcohols for the treatment of prostatic pathologies
EP88105681A Withdrawn EP0287000A1 (en) 1987-04-17 1988-04-09 Pharmaceutical compositions containing higher alcohols for the treatment of prostatic pathologies

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP88105681A Withdrawn EP0287000A1 (en) 1987-04-17 1988-04-09 Pharmaceutical compositions containing higher alcohols for the treatment of prostatic pathologies

Country Status (7)

Country Link
EP (2) EP0365530A1 (en)
JP (1) JPH03500044A (en)
AU (1) AU1628988A (en)
CS (1) CS270241B2 (en)
IT (1) IT1203934B (en)
PT (1) PT87234B (en)
WO (1) WO1988007866A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5070107A (en) * 1989-04-28 1991-12-03 Lidak Pharmaceuticals Systemic antiviral treatment
US5071879A (en) * 1989-04-28 1991-12-10 Lidak Pharmaceuticals Systemic antiviral treatment
DE4040961A1 (en) * 1990-12-20 1992-06-25 Schwabe Willmar Gmbh & Co SABAL EXTRACT, METHOD FOR THE PRODUCTION AND USE THEREOF
ES2034887B1 (en) * 1991-07-11 1994-02-16 Euromed S A PROCEDURE FOR OBTAINING ESSENTIALLY LIPIDIC EXTRACTS FROM SABAL SERRULATA.
ES2034888B1 (en) * 1991-07-11 1994-02-16 Madaus Cerafarm Lab PROCEDURE FOR OBTAINING THE TOTAL ACID FRACTION OF THE LIPID EXTRACTS OF THE FRUITS OF THE SABAL SERRULATA.
IT1258305B (en) * 1992-04-10 1996-02-22 Zambeletti Spa L RECTAL PHARMACEUTICAL COMPOSITIONS FOR THE TREATMENT OF PROSTATIC HYPERTROPHY
US6039950A (en) * 1995-04-14 2000-03-21 University Of Southern California Pharmaceutical grade saw palmetto
US6379714B1 (en) 1995-04-14 2002-04-30 Pharmaprint, Inc. Pharmaceutical grade botanical drugs
US5952392A (en) * 1996-09-17 1999-09-14 Avanir Pharmaceuticals Long-chain alcohols, alkanes, fatty acids and amides in the treatment of burns and viral inhibition
US6440980B1 (en) 1996-09-17 2002-08-27 Avanir Pharmaceuticals Synergistic inhibition of viral replication by long-chain hydrocarbons and nucleoside analogs
IL120128A0 (en) * 1997-02-03 1997-06-10 Barr Ehud Compositions for the treatment of androgenetic alopecia and hirsutism
GB9706318D0 (en) * 1997-03-26 1997-05-14 Bryant Andrew E Therapeutic formulations
JP5382512B2 (en) * 2009-05-27 2014-01-08 タマ生化学株式会社 Testosterone enhancer
CN107325940A (en) * 2017-08-30 2017-11-07 南宁学院 A kind of health liquor of tonifying kidney and strengthening yang and preparation method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0068055B1 (en) * 1981-06-26 1986-04-02 P.F. Industrie Process for obtaining a stable, deodorized antiprostatic extract from sabal serrulatum
FR2480754A1 (en) * 1980-04-21 1981-10-23 Fabre Sa Pierre Odourless extract of sabal serrulatum - prepd. under non:oxidising conditions, for treatment of prostate disorders and seborrhoea
FR2556968B1 (en) * 1983-12-22 1988-09-16 Pf Medicament TOPICAL DERMATOLOGICAL COMPOSITION FOR THE TREATMENT OF ACNE, BASED ON A LIPID FRACTION EXTRACTED FROM SERENOA REPENS FRUITS
IT1188633B (en) * 1986-03-27 1988-01-20 Lampugnani Farmaceutici Spa Two=stage extn. of palm fruits with different solvents

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8807866A1 *

Also Published As

Publication number Publication date
EP0287000A1 (en) 1988-10-19
IT1203934B (en) 1989-02-23
PT87234B (en) 1992-07-31
CS255088A2 (en) 1989-10-13
IT8720181A0 (en) 1987-04-17
JPH03500044A (en) 1991-01-10
WO1988007866A1 (en) 1988-10-20
PT87234A (en) 1988-05-01
CS270241B2 (en) 1990-06-13
AU1628988A (en) 1988-11-04

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