GB674325A - New therapeutically useful piperazine derivatives - Google Patents

New therapeutically useful piperazine derivatives

Info

Publication number
GB674325A
GB674325A GB2324/49A GB232449A GB674325A GB 674325 A GB674325 A GB 674325A GB 2324/49 A GB2324/49 A GB 2324/49A GB 232449 A GB232449 A GB 232449A GB 674325 A GB674325 A GB 674325A
Authority
GB
United Kingdom
Prior art keywords
ethyl
methyl
general formula
action
chloride
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.)
Expired
Application number
GB2324/49A
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.)
Rhone Poulenc SA
Original Assignee
Rhone Poulenc SA
Societe des Usines Chimiques Rhone Poulenc SA
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 Rhone Poulenc SA, Societe des Usines Chimiques Rhone Poulenc SA filed Critical Rhone Poulenc SA
Publication of GB674325A publication Critical patent/GB674325A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • A61K31/495Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • 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
    • A61K31/495Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • A61K31/496Non-condensed piperazines containing further heterocyclic rings, e.g. rifampin, thiothixene or sparfloxacin

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

Piperazine derivatives of the general formula <FORM:0674325/IV (b)/1> (wherein R and R1 represent alkyl radicals containing respectively not more than 4 and not more than 3 carbon atoms) and their salts are manufactured by condensing a sulphonyl halide R-SO2X(X=halogen) with an N-mono-substituted piperazine, or by cyclizing a compound of the general formula <FORM:0674325/IV (b)/2> (wherein X represents a halogen atom) by condensation with a primary amine R1NH2 or a secondary amine NH(R1)2, and in the latter case simultaneously or subsequently converting the resulting quaternary derivative into the desired tertiary base, or by the action of an alkylating agent (e.g. a methyl or ethyl halide or sulphonate) on a compound of the general formula <FORM:0674325/IV (b)/3> In all cases the products are, if desired, converted into salts, e.g. into their hydrochlorides by the action of alcoholic or ethereal hydrogen chloride on a solution of the base in an anhydrous organic solvent, or into their ethiodides by the action of ethyl iodide on a solution of the base in an inert organic solvent. The products are of therapeutic value in the treatment of traumatic and haemorrhagic shock. Examples illustrate the various processes as applied to the preparation of compounds in which R is ethyl, methyl, n- and iso-propyl and n-butyl, and R1 is ethyl, methyl and isopropyl. Alkanesulphondi-b -haloethylamides, used as starting materials in the second of the processes above, are obtainable by reaction of a sulphonyl halide R-SO2X with a secondary halogenated amine NH(CH2CH2X)2, or with diethanolamine followed by replacement of the hydroxy groups by halogen (e.g. by the action of thionyl chloride). In examples, methane- or ethane-sulphonyl chloride is heated with 2 : 21-dichlordiethylamine hydrochloride in acetone in the presence of sodium carbonate. N-Methane- and -ethane-sulphonylpiperazine, used as starting materials in the third process, are prepared by stirring methane- or ethane-sulphonyl chloride with N-carbethoxypiperazine in ether, and hydrolysing the product with aqueous alcoholic caustic soda. The Specification as open to inspection under Sect. 91 comprises also the manufacture of compounds of the general formula above in which R represents a phenyl radical which may be substituted by a methyl, ethyl, propyl, methoxy or ethoxy group or a halogen atom. Additional examples describe the preparation of compounds in which R is phenyl, p-tolyl, p-chlorophenyl and p-methoxyphenyl. N-Benzenesulphonylpiperazine, which is one of the starting materials, is prepared by reacting benzenesulphonyl chloride with N-carbethoxypiperidine and hydrolysing the product. This subject-matter does not appear in the Specification as accepted.
GB2324/49A 1948-03-05 1949-01-27 New therapeutically useful piperazine derivatives Expired GB674325A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR674325X 1948-03-05

Publications (1)

Publication Number Publication Date
GB674325A true GB674325A (en) 1952-06-25

Family

ID=9018669

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2324/49A Expired GB674325A (en) 1948-03-05 1949-01-27 New therapeutically useful piperazine derivatives

Country Status (1)

Country Link
GB (1) GB674325A (en)

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