ES479992A1 - Un procedimiento para la preparacion de ftalazinas. - Google Patents

Un procedimiento para la preparacion de ftalazinas.

Info

Publication number
ES479992A1
ES479992A1 ES479992A ES479992A ES479992A1 ES 479992 A1 ES479992 A1 ES 479992A1 ES 479992 A ES479992 A ES 479992A ES 479992 A ES479992 A ES 479992A ES 479992 A1 ES479992 A1 ES 479992A1
Authority
ES
Spain
Prior art keywords
lower alkyl
cardiac
doses
phosphodiesterase
atoms
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
ES479992A
Other languages
English (en)
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.)
Pfizer Corp
Original Assignee
Pfizer Corp
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 Pfizer Corp filed Critical Pfizer Corp
Publication of ES479992A1 publication Critical patent/ES479992A1/es
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D213/36—Radicals substituted by singly-bound nitrogen atoms
    • C07D213/40—Acylated substituent nitrogen atom
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P3/00—Drugs for disorders of the metabolism
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00—Drugs for disorders of the cardiovascular system
    • A61P9/04—Inotropic agents, i.e. stimulants of cardiac contraction; Drugs for heart failure
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
    • C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
    • C07D211/08—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms
    • C07D211/18—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D211/20—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by singly bound oxygen or sulphur atoms
    • C07D211/22—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by singly bound oxygen or sulphur atoms by oxygen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
    • C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
    • C07D211/08—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms
    • C07D211/18—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D211/26—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by nitrogen atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
    • C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
    • C07D211/08—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms
    • C07D211/18—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D211/26—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by nitrogen atoms
    • C07D211/28—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon or substituted hydrocarbon radicals directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring carbon atoms with hydrocarbon radicals, substituted by nitrogen atoms to which a second hetero atom is attached
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
    • C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
    • C07D211/36—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D211/40—Oxygen atoms
    • C07D211/44—Oxygen atoms attached in position 4
    • C07D211/46—Oxygen atoms attached in position 4 having a hydrogen atom as the second substituent in position 4
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D213/36—Radicals substituted by singly-bound nitrogen atoms
    • C07D213/38—Radicals substituted by singly-bound nitrogen atoms having only hydrogen or hydrocarbon radicals attached to the substituent nitrogen atom
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D213/36—Radicals substituted by singly-bound nitrogen atoms
    • C07D213/42—Radicals substituted by singly-bound nitrogen atoms having hetero atoms attached to the substituent nitrogen atom
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D237/00—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings
    • C07D237/26—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings condensed with carbocyclic rings or ring systems
    • C07D237/30—Phthalazines
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D237/00—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings
    • C07D237/26—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings condensed with carbocyclic rings or ring systems
    • C07D237/30—Phthalazines
    • C07D237/32—Phthalazines with oxygen atoms directly attached to carbon atoms of the nitrogen-containing ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Animal Behavior & Ethology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Veterinary Medicine (AREA)
  • Cardiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hospice & Palliative Care (AREA)
  • Diabetes (AREA)
  • Hematology (AREA)
  • Obesity (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Hydrogenated Pyridines (AREA)
  • Pyridine Compounds (AREA)

Abstract

1. Un procedimiento para la preparación de ftalazinas de fórmula: **(Fórmula-01)** donde R es un grupo alquilo inferior e Y está unido a la posición 3 o 4 del anillo de piperidina y representa un grupo de fórmula: -X(CHR1)m-Z donde R1 es un átomo de hidrógeno o un grupo alquilo inferior; m es 1 o 2, con la condición de que cuando m es 2, los radicales R1 pueden ser iguales o diferentes; X es un átomo de oxígeno o un enlace directo, con la condición de que cuando m es 1, X es un enlace directo y Z es un grupo seleccionado entre: -N(R2)COR3 -N(R2)SO2R3 y -N(R2)CONR4R5 en donde R2 es hidrógeno o alquilo inferior; R3 es alquilo inferior, fenetilo, bencilo fenilo o 2-, 3- o 4- piridilo y R4 y R5 son cada uno de ellos independientemente un grupo como el definido para R3 anteriormente, y sus sales de adición de ácidos farmacéuticamente aceptables; cuyo procedimiento se caracteriza por hacer reaccionar con un agente acilante un compuesto de fórmula: **(Fórmula-03)** donde R, R1, R2, X y m son losdefinidos en la fórmula (01), y opcionalmente seguido de conversión del producto de fórmula (01) en una sal de adición de ácido farmacéuticamente aceptable por reacción con un ácido no tóxico.
ES479992A 1977-11-03 1979-04-26 Un procedimiento para la preparacion de ftalazinas. Expired ES479992A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4567077 1977-11-03

Publications (1)

Publication Number Publication Date
ES479992A1 true ES479992A1 (es) 1980-09-01

Family

ID=10438118

Family Applications (5)

Application Number Title Priority Date Filing Date
ES474764A Pending ES474764A0 (es) 1977-11-03 1978-11-02 Un procedimiento para la preparacion de ftalazinas.
ES479992A Expired ES479992A1 (es) 1977-11-03 1979-04-26 Un procedimiento para la preparacion de ftalazinas.
ES479993A Expired ES479993A1 (es) 1977-11-03 1979-04-26 Un procedimiento para la preparacion de ftalazinas.
ES479994A Expired ES479994A1 (es) 1977-11-03 1979-04-26 Un procedimiento para la preparacion de ftalazinas.
ES479991A Expired ES479991A1 (es) 1977-11-03 1979-04-26 Un procedimiento para la preparacion de ftalazinas.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
ES474764A Pending ES474764A0 (es) 1977-11-03 1978-11-02 Un procedimiento para la preparacion de ftalazinas.

Family Applications After (3)

Application Number Title Priority Date Filing Date
ES479993A Expired ES479993A1 (es) 1977-11-03 1979-04-26 Un procedimiento para la preparacion de ftalazinas.
ES479994A Expired ES479994A1 (es) 1977-11-03 1979-04-26 Un procedimiento para la preparacion de ftalazinas.
ES479991A Expired ES479991A1 (es) 1977-11-03 1979-04-26 Un procedimiento para la preparacion de ftalazinas.

Country Status (20)

Country Link
JP (1) JPS5498783A (es)
AR (3) AR219561A1 (es)
AT (1) AT365184B (es)
AU (1) AU507007B2 (es)
BE (1) BE871770A (es)
CA (1) CA1114379A (es)
DE (1) DE2847621A1 (es)
DK (1) DK487978A (es)
ES (5) ES474764A0 (es)
FI (1) FI783326A (es)
FR (1) FR2407927A1 (es)
IE (1) IE47481B1 (es)
IL (1) IL55844A (es)
IT (1) IT1101279B (es)
LU (1) LU80458A1 (es)
NL (1) NL7810864A (es)
PH (1) PH14659A (es)
PT (1) PT68734A (es)
SE (1) SE7811322L (es)
YU (3) YU253678A (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6215356U (es) * 1985-07-15 1987-01-29
US7772188B2 (en) 2003-01-28 2010-08-10 Ironwood Pharmaceuticals, Inc. Methods and compositions for the treatment of gastrointestinal disorders
WO2004099179A1 (en) * 2003-05-07 2004-11-18 Actelion Pharmaceuticals Ltd Piperazine-alkyl-ureido derivatives
NZ568694A (en) 2005-11-09 2011-09-30 Zalicus Inc Method, compositions, and kits for the treatment of medical conditions
US7879802B2 (en) 2007-06-04 2011-02-01 Synergy Pharmaceuticals Inc. Agonists of guanylate cyclase useful for the treatment of gastrointestinal disorders, inflammation, cancer and other disorders
US8969514B2 (en) 2007-06-04 2015-03-03 Synergy Pharmaceuticals, Inc. Agonists of guanylate cyclase useful for the treatment of hypercholesterolemia, atherosclerosis, coronary heart disease, gallstone, obesity and other cardiovascular diseases
EP3239170B1 (en) 2008-06-04 2019-03-20 Synergy Pharmaceuticals Inc. Agonists of guanylate cyclase useful for the treatment of gastrointestinal disorders, inflammation, cancer and other disorders
EP3241839B1 (en) 2008-07-16 2019-09-04 Bausch Health Ireland Limited Agonists of guanylate cyclase useful for the treatment of gastrointestinal, inflammation, cancer and other disorders
US9616097B2 (en) 2010-09-15 2017-04-11 Synergy Pharmaceuticals, Inc. Formulations of guanylate cyclase C agonists and methods of use
CN108676076A (zh) 2011-03-01 2018-10-19 辛纳吉制药公司 制备鸟苷酸环化酶c激动剂的方法
EP2804603A1 (en) 2012-01-10 2014-11-26 President and Fellows of Harvard College Beta-cell replication promoting compounds and methods of their use
US9545446B2 (en) 2013-02-25 2017-01-17 Synergy Pharmaceuticals, Inc. Agonists of guanylate cyclase and their uses
CA2905435A1 (en) 2013-03-15 2014-09-25 Synergy Pharmaceuticals Inc. Compositions useful for the treatment of gastrointestinal disorders
US9708367B2 (en) 2013-03-15 2017-07-18 Synergy Pharmaceuticals, Inc. Agonists of guanylate cyclase and their uses
JP6606491B2 (ja) 2013-06-05 2019-11-13 シナジー ファーマシューティカルズ インコーポレイテッド グアニル酸シクラーゼｃの超高純度アゴニスト、その作成および使用方法
IL280864B2 (en) 2013-08-09 2024-03-01 Ardelyx Inc Compounds and methods for inhibiting phosphate transport
WO2020237096A1 (en) 2019-05-21 2020-11-26 Ardelyx, Inc. Combination for lowering serum phosphate in a patient

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1293565A (en) * 1969-05-03 1972-10-18 Aspro Nicholas Ltd Aminophthalazines and pharmaceutical compositions thereof

Also Published As

Publication number Publication date
AR219561A1 (es) 1980-08-29
FI783326A (fi) 1979-05-04
IL55844A0 (en) 1979-01-31
SE7811322L (sv) 1979-05-04
PT68734A (en) 1978-12-01
AR217578A1 (es) 1980-03-31
AU4127678A (en) 1979-05-17
LU80458A1 (fr) 1980-05-07
IT7829369A0 (it) 1978-11-02
ES479991A1 (es) 1980-08-16
IE47481B1 (en) 1984-04-04
NL7810864A (nl) 1979-05-07
IE782166L (en) 1979-05-03
YU211582A (en) 1983-02-28
ATA783978A (de) 1981-05-15
PH14659A (en) 1981-10-20
AT365184B (de) 1981-12-28
CA1114379A (en) 1981-12-15
AR217577A1 (es) 1980-03-31
FR2407927B1 (es) 1982-07-16
IT1101279B (it) 1985-09-28
AU507007B2 (en) 1980-01-31
DE2847621A1 (de) 1979-05-17
ES479993A1 (es) 1980-08-16
BE871770A (fr) 1979-05-03
FR2407927A1 (fr) 1979-06-01
YU211682A (en) 1983-02-28
DK487978A (da) 1979-05-04
JPS5498783A (en) 1979-08-03
ES474764A0 (es) 1980-08-16
JPS5538352B2 (es) 1980-10-03
ES479994A1 (es) 1980-08-16
YU253678A (en) 1983-02-28
IL55844A (en) 1982-05-31

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