IE42999B1 - Stable solutions of ergot alkaloids - Google Patents

Stable solutions of ergot alkaloids

Info

Publication number
IE42999B1
IE42999B1 IE1138/76A IE113876A IE42999B1 IE 42999 B1 IE42999 B1 IE 42999B1 IE 1138/76 A IE1138/76 A IE 1138/76A IE 113876 A IE113876 A IE 113876A IE 42999 B1 IE42999 B1 IE 42999B1
Authority
IE
Ireland
Prior art keywords
component
solution
carbon atoms
weight
mixture
Prior art date
Application number
IE1138/76A
Other versions
IE42999L (en
Original Assignee
Sandoz Ltd
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 Sandoz Ltd filed Critical Sandoz Ltd
Publication of IE42999L publication Critical patent/IE42999L/en
Publication of IE42999B1 publication Critical patent/IE42999B1/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/0012Galenical forms characterised by the site of application
    • A61K9/0019Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/47Quinolines; Isoquinolines
    • A61K31/48Ergoline derivatives, e.g. lysergic acid, ergotamine
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/06Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
    • A61K47/08Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
    • A61K47/10Alcohols; Phenols; Salts thereof, e.g. glycerol; Polyethylene glycols [PEG]; Poloxamers; PEG/POE alkyl ethers

Abstract

STABLE SOLUTIONS AND PROCESSES FOR THEIR PREPARATION Solutions of hydrogenated ergopeptide alkaloids in pharmacologically acceptable organic solvents have improved stability. Preferred solvents are alcohols, particularly mixtures of ethanol and propylene glyool.

Description

This invention relates to solutions of ergot alkaloids and their synthetic derivatives including their hydrogenated derivatives and salt forms thereof.
Solutions of such compounds in predominantly aqueous media have the iisadvantage that the concentration of the active species decreases on storage, for example because of oxidation reactions. For this reason it is normal iractice to pass inert gas through the solution during filling of the vessels in which the solution is to be sold, and to protect the contents from air, light and high temperatures.
It has now been found that solutions of certain ergot alkaloids have improved stability when pharmacologically acceptable organic solvents are used in place of aqueous media.
The present invention provides a stable hydrogenated ergopeptide alkaloid ;olution consisting essentially of (a) a hydrogenated ergopeptide alkaloid or a pharmaceutically acceptable icid addition salt thereof or mixture thereof, (b) a pharmacologically acceptable monofunctional alcohol having up to 18 :arbon atoms or mixture thereof, - 2 42999 [-:} a po’yfunctional alcohol having up to 6 hydroxy groups or a polymeric poly^unctional alcohol having a molecular weight of from 200 to 20,000 or mixture thereof, and id) up to 40% by weight of the solution of water, the weight ratio of component (b) to component (c) being 1:01 to 1:100.
Sy the term hydrogenated ergopeptide alkaloids is included hydrogenated natural or synthetic ergopeptide alkaloids, and also their salt forms. The expression consisting essentially of is to be interpreted as meaning that the compositions do not contain any pharmaceutically active species other than comconent (a).
The pharmacologically acceptable monofunctional alcohols having up tc iS carbon atoms preferably have up to 10 carbon atoms and most preferably up to 3 carbon atoms. An especially preferred solvent of this type is ethanol. The polyfunctiona! alcohols having up to 6 carbon atoms and up to 6 hydroxy groups preferably have 2 or 3 carbon atoms and 2 or 3 hydroxy groups.
Especially preferred are glycerol and propylene glycol. The polyfunctional alcohols may also be used in polymeric form, for example polyalkylene glycols, especially polyethylene glycol, polypropylene glycol or their copolymers, having a molecular weight from 200 to 20,000, preferably from 200 to 600. A particularly suitable polyalcohol is polyethylene glycol with a molecular weight of approximately 400.
The above mono- and polyfunctional alcohols are used according to the invention in the form of mixtures in which the monofunctional and the polyfunctional alcohol are present in a ratio of from 1:0.1 to 1:100 by weight, preferably in a ratio of from 1:1 to 1:4, more preferably of 1:2 by weight.
A mixture of ethanol and propylene glycol is particularly preferred.
The solutions may of course contain a mixture of several mono- and/or polyfunctional alcohols.
Furthermore, the compositions according to the invention may further '9 contain, as additional solvents, pharmacologically acceptable organic esters and ethers, particularly those formed from the above-mentioned mono- and polyfunctional alcohols and fatty acids having from 12-18 carbon atoms, for example stearic acid, palmitic acid and oleic acid; or fatty alcohols having from 12 to 18 carbon atoms, for example lauryl alcohol, cetyl alcohol and stearyl a1cohol.
The compositions may contain minor amounts of water, but the water content must not exceed 402 by weight of the composition.
Hydrogenated natural and synthetic ergopeptide alkaloids which may be stabilised in solution by the process of the invention include dihydroergotamine, dihydroergocristine, dihydroergocryptine, dihydroergocornine and nixtures thereof, particularly a mixture of dihydroergocristine, dihydroirgocryptine and dihydroergocornine in 1:1:1 ratio. Suitable salt forms are salts of pharmacologically acceptable acids, for example the methanesulphonate, naleate and tartrate.
Although the concentration of the hydrogenated ergopeptide alkaloids in the solutions is not critical, it is preferred to use solutions with a soncentration of active species of from 0.1 to 1% by weight, preferably from 3.1 to 0.52 by weight. It is to be understood that the concentration to be ised will depend upon the application for which the solution is intended.
The solutions may in addition contain further solubilising additives For example acids, particularly methanesulphonic acid, maleic acid and tartaric icid.
The preparation of the compositions according to the invention is :arried out by dissolving the hydrogenated ergopeptide alkaloids in one of the lescribed organic solvent mixtures by stirring, suitably under an atmosphere )f inert gas, e.g. nitrogen, and suitably with exclusion of daylight and at •oom temperature (15-25°C). - 4 42999 The preparation of solvent mixtures is carried out in conventional manner, ar.d where one cf the solvent components is solid at room temperature, mixing is suitably carried out at higher temperatures, e.g. at up to 80°C.
Ethanol may advantageously be used as co-solvent.
Compositions according to the invention are useful as pharmaceuticals in the same way as corresponding aqueous solutions of the same active species. They may be administered orally, and may for this purpose be made up in vessels aesicned to dispense unit dosages, for example dropper bottles; or parenteraily, in which case the solutions will normally be sterilized and may be sealed in ampoules of unit dosage, EXAMPLE 1.
A mixture of 50.0 g propylene glycol and 41.9 g 94% ethanol was prepared and in this mixture was dissolved, by stirring at room temperature under a nitrogen atmosphere, 0.1 g of a mixture of dihydroergocristine, dihydroergocryptine and dihydrcergocornine (1:1:1). After filtration under pressure, the solution was used to fill dropper bottles.
EXAMPLE 2.
A mixture of 40.0 g propylene glycol, 34.0 g 94% ethanol and 25.0 g anhydrous glycerol was prepared and in this mixture was dissolved, by stirring at room temperature under a nitrogen atmosphere, 0.1 g of a mixture of di hydroergocri stine, dihydroergocryptine and dihydroergocornine (1:1:1).
After filtration under pressure, the solution was used to fill dropper bottles.
EXAMPLE 3.
A mixture of 50.0 propylene glycol and 41.9 g 94% ethanol was prepared and in this mixture was dissolved, by stirring at room temperature under a nitrogen atmosphere, 0.1 g of dihydroergotamine methanesulphonate. After filtration under pressure, the solution was used to fill dropper bottles.

Claims (11)

1. A stable hydrogenated ergopeptide alkaloid solution consisting essentially of a) a hydrogenated ergopeptide alkaloid as herein defined, b) a pharmacologically acceptable monofunctional alcohol having up to 18 carbon atoms, c) a polyfunctional alcohol having up to 6 carbon atoms and 6 hydroxy groups or a polymeric polyfunctional alcohol having a molecular weight of from 200 to 20,000, and d) up to 40% by weight of the solution of water, the weight ratio of component b) to component c) being 1:0.1 to 1:100.
2. A solution as claimed in Claim 1 in which the concentration of component a) is from 0.1 to 1 per cent by weight.
3. A solution as claimed in Claim 2 in which the concentration of component a) is from 0.1 to 0.5 per cent by weight.
4. A solution as claimed in any one of Claims 1-3 in which component b) has up to 10 carbon atoms and the ratio of component b) to component c) is 1:1 to 1:10.
5. A solution as claimed in Claim 4 in which component b) has up to 3 carbon atoms and component c) is a polyhydroxy alcohol of 2 to 3 carbon atoms and 2 or 3 hydroxy groups or a polymeric polyhydroxy alcohol having a molecular weight of 200 to 600 and the ratio of component b) to component c) is 1:1 to 1:4.
6. A solution as claimed in Claim 5 in which the ratio of component b) to somponent c) is 1:1 to 1:2. 1. A solution as claimed in Claim 5 in which the ratio of component b) to :omponent c) is 1:2. 3. A solution as claimed in any one of the preceding claims in which :omponent a) is ethanol and component b) is propylene glycol or glycerol or a fixture thereof. - 6 42999
7. 9. A solution as claimed in any one of the preceding claims in which the hydrogenated ergopeptide alkaloid is dihydroergotamine, dihydroergocristine dihydroergocryptine, dihydroergocornine or pharmaceutically acceptable salts thereof or mixtures thereof. 5 10. A solution as claimed in Claim 9 in which the hydrogenated ergopeptide alkaloid is a 1:1:1 mixture of dihydroergocristine, dihydroergocryptine and dihydroergocornine or pharmaceutically acceptable salts thereof. 11. A sterilized, sealed ampoule containing essentially a solution as claimed in any one of the preceding claims.
8. 10 12. A dropper bottle containing essentially a solution as claimed in any one of the preceding claims.
9. 13. « method of preparing a stable hydrogenated ergopeptide alkaloid solution according to Claim 1 which comprises dissolving a hydrogenated ergopeptide alkaloid or a pharmaceutically acceptable acid addition salt
10. 15 thereof or mixture thereof in a solvent consisting essentially of: a) a pharmacologically acceptable monofunctional alcohol having up to 18 carbon atoms or mixture thereof; b) a polyfunctional alcohol having up to 6 carbon atoms arid 6 hydroxy groups or a polymeric polyfunctional alcohol having a molecular weight of from 200 to 20,000 or mixture thereof; and c) up to 40%
11. 20 by weight of the solution of water, the weight ratio of component b) to component c) being 1:0.1 to 1:100, under an atmosphere of inert gas with the exclusion of daylight and at a temperature of 15 to 25°C.
IE1138/76A 1975-05-31 1976-05-28 Stable solutions of ergot alkaloids IE42999B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2524184 1975-05-31

Publications (2)

Publication Number Publication Date
IE42999L IE42999L (en) 1976-11-30
IE42999B1 true IE42999B1 (en) 1980-12-03

Family

ID=5947910

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1138/76A IE42999B1 (en) 1975-05-31 1976-05-28 Stable solutions of ergot alkaloids

Country Status (26)

Country Link
JP (1) JPS585167B2 (en)
AT (1) AT355725B (en)
AU (1) AU508625B2 (en)
BE (1) BE842348A (en)
CA (1) CA1069438A (en)
CS (1) CS205023B2 (en)
DD (1) DD125597A5 (en)
DK (1) DK154606C (en)
ES (1) ES448372A1 (en)
FI (1) FI761461A (en)
FR (1) FR2313059A1 (en)
GB (1) GB1539083A (en)
GR (1) GR60264B (en)
HK (1) HK15383A (en)
HU (1) HU171514B (en)
IE (1) IE42999B1 (en)
IL (1) IL49668A (en)
MY (1) MY8300013A (en)
NL (1) NL172616C (en)
NO (1) NO145262C (en)
NZ (1) NZ180984A (en)
PT (1) PT65151B (en)
SE (1) SE426782B (en)
SU (2) SU677664A3 (en)
YU (1) YU133076A (en)
ZA (1) ZA763138B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2935515A1 (en) * 1979-09-03 1981-03-19 Fa. Dr. Willmar Schwabe, 7500 Karlsruhe MEDICINAL PRODUCT
FR2483235A1 (en) * 1980-05-28 1981-12-04 Fabre Sa Pierre TOPICAL COMPOSITIONS CONTAINING RYE AND VINCA ROSEA ERGOT ALKALOIDS FOR THE TREATMENT OF HYPERSEBORRHOES
DE3227122A1 (en) * 1982-07-20 1984-01-26 Dr. Rentschler Arzneimittel Gmbh & Co, 7958 Laupheim STABLE SOLUTIONS OF MOTHER CORNAL CALOIDS
HU192050B (en) * 1983-04-22 1987-05-28 Sandoz Ag Process for production of medical preparative containing co-dergocrin and one piridin-dicarbonic acid diesthertype calcium-antagonist
IT1200609B (en) * 1985-04-04 1989-01-27 Poli Ind Chimica Spa PHARMACEUTICAL COMPOSITION FOR THE TREATMENT OF CEREBROVASCULAR TURBES AND THE ELDERLY BRAIN
DE102007014947B4 (en) 2007-03-23 2010-05-27 Axxonis Pharma Ag Stabilized aqueous solutions of ergoline compounds

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD43402A (en) *
US2033921A (en) * 1931-08-28 1936-03-17 Squibb & Sons Inc Solution of ergot alkaloids
US1969382A (en) * 1932-05-21 1934-08-07 Squibb & Sons Inc Preparation of a stable hydro-alcoholic extract of ergot

Also Published As

Publication number Publication date
FR2313059A1 (en) 1976-12-31
NL7605745A (en) 1976-12-02
NL172616B (en) 1983-05-02
AU508625B2 (en) 1980-03-27
AT355725B (en) 1980-03-25
NO145262B (en) 1981-11-09
HU171514B (en) 1978-01-28
NO145262C (en) 1982-02-17
HK15383A (en) 1983-05-20
JPS585167B2 (en) 1983-01-29
SU677664A3 (en) 1979-07-30
IL49668A0 (en) 1976-09-30
AU1442276A (en) 1977-12-01
PT65151A (en) 1976-06-01
JPS51144720A (en) 1976-12-13
FI761461A (en) 1976-12-01
CA1069438A (en) 1980-01-08
DK154606C (en) 1989-05-01
FR2313059B1 (en) 1978-12-15
SE426782B (en) 1983-02-14
CS205023B2 (en) 1981-04-30
DD125597A5 (en) 1977-05-04
NO761760L (en) 1976-12-01
ATA390476A (en) 1979-08-15
SU952106A3 (en) 1982-08-15
DK154606B (en) 1988-12-05
YU133076A (en) 1984-08-31
GR60264B (en) 1978-04-20
ES448372A1 (en) 1978-03-01
IE42999L (en) 1976-11-30
SE7605841L (en) 1976-12-01
PT65151B (en) 1978-02-06
MY8300013A (en) 1983-12-31
BE842348A (en) 1976-11-29
DK228676A (en) 1976-12-01
NL172616C (en) 1983-10-03
IL49668A (en) 1979-10-31
ZA763138B (en) 1978-01-25
GB1539083A (en) 1979-01-24
NZ180984A (en) 1978-06-20

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