RO78953A - PROCESS FOR THE PREPARATION OF 4-HALO-6-HYDROXY-2H-PYRAN-3 (6H) -ONES - Google Patents

PROCESS FOR THE PREPARATION OF 4-HALO-6-HYDROXY-2H-PYRAN-3 (6H) -ONES

Info

Publication number: RO78953A
Authority: RO; Romania
Prior art keywords: pyran; halo; hydroxy; ones; preparation
Prior art date: 1976-08-02

Application number

RO7799830A

Other languages

French (fr)

Romanian (ro)

Inventor

Thomas M Brennan

Daniel P Brannegan

Paul D Weeks

Donald E Kuhla

Original Assignee

Pfizer Inc,Us

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.)

1976-08-02

Filing date

1977-07-20

Publication date

1982-04-12

1976-09-09 Priority claimed from US05/721,885 external-priority patent/US4082717A/en

1977-07-20 Application filed by Pfizer Inc,Us filed Critical Pfizer Inc,Us

1982-04-12 Publication of RO78953A publication Critical patent/RO78953A/en

Classifications

- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
- C07D309/32—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
- C07D309/34—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D309/36—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with oxygen atoms directly attached to ring carbon atoms
- C07D309/40—Oxygen atoms attached in positions 3 and 4, e.g. maltol

Landscapes

Organic Chemistry (AREA)
Chemical & Material Sciences (AREA)
Pyrane Compounds (AREA)
Pyridine Compounds (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Cosmetics (AREA)
Plural Heterocyclic Compounds (AREA)
Saccharide Compounds (AREA)
Furan Compounds (AREA)
Picture Signal Circuits (AREA)
Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Transforming Electric Information Into Light Information (AREA)
Processing Of Color Television Signals (AREA)
Nitrogen Condensed Heterocyclic Rings (AREA)
Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Seasonings (AREA)
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Agricultural Chemicals And Associated Chemicals (AREA)
Control Of El Displays (AREA)

RO7799830A 1976-08-02 1977-07-20 PROCESS FOR THE PREPARATION OF 4-HALO-6-HYDROXY-2H-PYRAN-3 (6H) -ONES RO78953A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US71090176A	1976-08-02	1976-08-02
US05/721,885 US4082717A (en)	1976-08-02	1976-09-09	Preparation of gamma-pyrones

Publications (1)

Publication Number	Publication Date
RO78953A true RO78953A (en)	1982-04-12

Family

ID=27108548

Family Applications (4)

Application Number	Title	Priority Date	Filing Date
RO7799826A RO78952A (en)	1976-08-02	1977-07-20	PROCESS FOR THE PREPARATION OF GAMA-PIRONS
RO7791106A RO74367A (en)	1976-08-02	1977-07-20	PROCESS FOR THE PREPARATION OF GAMMA PYRON
RO7799830A RO78953A (en)	1976-08-02	1977-07-20	PROCESS FOR THE PREPARATION OF 4-HALO-6-HYDROXY-2H-PYRAN-3 (6H) -ONES
RO7799825A RO78951A2 (en)	1976-08-02	1977-07-20	PROCESS FOR THE PREPARATION OF 6-HYDROXY-2H-PYRAN-3 (6H) -ON

Family Applications Before (2)

Application Number	Title	Priority Date	Filing Date
RO7799826A RO78952A (en)	1976-08-02	1977-07-20	PROCESS FOR THE PREPARATION OF GAMA-PIRONS
RO7791106A RO74367A (en)	1976-08-02	1977-07-20	PROCESS FOR THE PREPARATION OF GAMMA PYRON

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
RO7799825A RO78951A2 (en)	1976-08-02	1977-07-20	PROCESS FOR THE PREPARATION OF 6-HYDROXY-2H-PYRAN-3 (6H) -ON

Country Status (36)

Country	Link
JP (7)	JPS5318578A (en)
AR (1)	AR216080A1 (en)
AT (3)	AT362790B (en)
BE (1)	BE855965A (en)
BG (4)	BG28849A3 (en)
BR (1)	BR7703970A (en)
CA (3)	CA1095921A (en)
CH (4)	CH625798A5 (en)
CS (3)	CS203921B2 (en)
DD (1)	DD132494A5 (en)
DE (3)	DE2728499C2 (en)
DK (4)	DK153483C (en)
EG (1)	EG13080A (en)
ES (5)	ES459994A1 (en)
FI (6)	FI72722C (en)
FR (1)	FR2372821A1 (en)
GB (5)	GB1538371A (en)
GR (1)	GR68938B (en)
HK (5)	HK30381A (en)
HU (4)	HU180040B (en)
IE (5)	IE45645B1 (en)
IT (1)	IT1106258B (en)
LU (1)	LU77600A1 (en)
MX (1)	MX4597E (en)
MY (3)	MY8100262A (en)
NL (5)	NL170955C (en)
NO (7)	NO150561C (en)
NZ (1)	NZ184342A (en)
PH (5)	PH13557A (en)
PL (4)	PL215008A1 (en)
PT (1)	PT66694B (en)
RO (4)	RO78952A (en)
SE (6)	SE433079B (en)
SU (2)	SU955859A3 (en)
TR (1)	TR19652A (en)
YU (4)	YU40166B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CA1095921A (en)	1976-08-02	1981-02-17	Thomas M. Brennan	Preparation of gamma-pyrones
FR2402654A1 (en) *	1977-09-12	1979-04-06	Shinetsu Chemical Co	Tetra:hydro-pyranone derivs. - useful as intermediates for cpds. used as food flavours
JPS5444675A (en) *	1977-09-12	1979-04-09	Shin Etsu Chem Co Ltd	Production of 3-hydroxy-4-pyrone analog
JPS5741226U (en) *	1980-08-20	1982-03-05
JPS59135008U (en) *	1983-02-28	1984-09-10	松下電工株式会社	Distribution board device
JPS6050245A (en) *	1983-08-29	1985-03-19	Nissan Motor Co Ltd	Fuel injection device in internal-combustion engine
JPH0226945Y2 (en) *	1985-09-11	1990-07-20
JP2586607B2 (en) *	1987-10-30	1997-03-05	日産化学工業株式会社	Production method of optically active alcohol
TWI404533B (en)	2007-03-28	2013-08-11	Apotex Technologies Inc	Fluorinated derivatives of deferiprone
WO2009129592A1 (en)	2008-04-25	2009-10-29	Apotex Technologies Inc.	Liquid formulation for deferiprone with palatable taste
MX2012000247A (en)	2009-07-03	2012-03-26	Apotex Technologies Inc	Fluorinated derivatives of 3-hydroxypyridin-4-ones.
WO2017168309A1 (en) *	2016-03-29	2017-10-05	Dr. Reddy’S Laboratories Limited	Process for preparation of eribulin and intermediates thereof
CN108609456B (en) *	2016-12-13	2021-03-12	奥的斯电梯公司	Openable expansion panel and elevator suspended ceiling, elevator car and elevator system with same
CN111606879A (en) *	2020-05-25	2020-09-01	安徽金禾实业股份有限公司	Method for preparing 2-hydroxymethyl-3-alkoxy-4H-pyran-4-ketone by one-pot method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3491122A (en) *	1966-09-14	1970-01-20	Monsanto Co	Synthesis of 4-pyrones
US3547912A (en) *	1968-07-29	1970-12-15	American Home Prod	Derivatives of 2h-pyran-3(6h)-ones and preparation thereof
JPS5145565B1 (en) *	1968-10-12	1976-12-04
US3621063A (en) *	1968-12-24	1971-11-16	Monsanto Co	Unsaturated acyclic ketones
US3832357A (en) *	1971-05-26	1974-08-27	Daicel Ltd	Process for preparation of 3-hydroxy-2-alkyl-4-pyrone
JPS5212166A (en) *	1975-07-17	1977-01-29	Tatsuya Shono	Process for preparation of 4-pyron derivatives
IE42789B1 (en) *	1975-08-28	1980-10-22	Pfizer	Preparation of gamma-pyrones
CA1095921A (en) *	1976-08-02	1981-02-17	Thomas M. Brennan	Preparation of gamma-pyrones

1977
- 1977-06-06 CA CA279,922A patent/CA1095921A/en not_active Expired
- 1977-06-08 NZ NZ184342A patent/NZ184342A/en unknown
- 1977-06-09 GR GR53666A patent/GR68938B/el unknown
- 1977-06-13 YU YU1469/77A patent/YU40166B/en unknown
- 1977-06-15 MX MX775807U patent/MX4597E/en unknown
- 1977-06-16 JP JP7157277A patent/JPS5318578A/en active Granted
- 1977-06-16 SE SE7707035A patent/SE433079B/en not_active IP Right Cessation
- 1977-06-17 PH PH19887A patent/PH13557A/en unknown
- 1977-06-20 BR BR7703970A patent/BR7703970A/en unknown
- 1977-06-21 BE BE1008209A patent/BE855965A/en not_active IP Right Cessation
- 1977-06-21 FI FI771934A patent/FI72722C/en not_active IP Right Cessation
- 1977-06-21 NL NLAANVRAGE7706811,A patent/NL170955C/en not_active IP Right Cessation
- 1977-06-22 ES ES459994A patent/ES459994A1/en not_active Expired
- 1977-06-22 CH CH765877A patent/CH625798A5/en not_active IP Right Cessation
- 1977-06-22 EG EG371/77A patent/EG13080A/en active
- 1977-06-22 TR TR19652A patent/TR19652A/en unknown
- 1977-06-22 NO NO772193A patent/NO150561C/en unknown
- 1977-06-22 LU LU77600A patent/LU77600A1/xx unknown
- 1977-06-22 DK DK276177A patent/DK153483C/en active
- 1977-06-22 DE DE2728499A patent/DE2728499C2/en not_active Expired
- 1977-06-22 DE DE2760221A patent/DE2760221C2/de not_active Expired
- 1977-06-22 AT AT0440477A patent/AT362790B/en not_active IP Right Cessation
- 1977-06-22 PT PT66694A patent/PT66694B/en unknown
- 1977-06-22 DE DE2760220A patent/DE2760220C2/de not_active Expired
- 1977-06-23 AR AR268164A patent/AR216080A1/en active
- 1977-06-23 FR FR7719250A patent/FR2372821A1/en active Granted
- 1977-06-23 DD DD7700199657A patent/DD132494A5/en not_active IP Right Cessation
- 1977-06-23 IT IT49950/77A patent/IT1106258B/en active
- 1977-07-14 BG BG036892A patent/BG28849A3/en unknown
- 1977-07-14 BG BG042608A patent/BG29136A3/en unknown
- 1977-07-14 CS CS774705A patent/CS203921B2/en unknown
- 1977-07-14 BG BG7942607A patent/BG28989A4/en unknown
- 1977-07-14 BG BG7742606A patent/BG28988A4/en unknown
- 1977-07-20 RO RO7799826A patent/RO78952A/en unknown
- 1977-07-20 RO RO7791106A patent/RO74367A/en unknown
- 1977-07-20 RO RO7799830A patent/RO78953A/en unknown
- 1977-07-20 RO RO7799825A patent/RO78951A2/en unknown
- 1977-07-21 PL PL21500877A patent/PL215008A1/en unknown
- 1977-07-21 GB GB30759/77A patent/GB1538371A/en not_active Expired
- 1977-07-21 PL PL1977215007A patent/PL115496B1/en unknown
- 1977-07-21 HU HU77PI584A patent/HU180040B/en unknown
- 1977-07-21 GB GB4243/78A patent/GB1538375A/en not_active Expired
- 1977-07-21 GB GB4242/78A patent/GB1538374A/en not_active Expired
- 1977-07-21 GB GB4240/78A patent/GB1538372A/en not_active Expired
- 1977-07-21 HU HU82157A patent/HU185687B/en unknown
- 1977-07-21 GB GB4241/78A patent/GB1538373A/en not_active Expired
- 1977-07-21 PL PL1977199798A patent/PL115586B1/en unknown
- 1977-07-21 SU SU772508256A patent/SU955859A3/en active
- 1977-07-21 HU HU82155A patent/HU185686B/en unknown
- 1977-07-21 HU HU82156A patent/HU186026B/en unknown
- 1977-07-21 PL PL1977215006A patent/PL115497B1/en unknown
- 1977-07-29 IE IE587/79A patent/IE45645B1/en not_active IP Right Cessation
- 1977-07-29 IE IE585/79A patent/IE45643B1/en not_active IP Right Cessation
- 1977-07-29 IE IE1587/77A patent/IE45641B1/en not_active IP Right Cessation
- 1977-07-29 IE IE584/79A patent/IE45642B1/en not_active IP Right Cessation
- 1977-07-29 IE IE586/79A patent/IE45644B1/en not_active IP Right Cessation
1978
- 1978-02-03 PH PH20746A patent/PH13926A/en unknown
- 1978-02-03 PH PH20745A patent/PH15185A/en unknown
- 1978-05-25 JP JP6281778A patent/JPS5436266A/en active Pending
- 1978-05-25 JP JP6282278A patent/JPS5436271A/en active Granted
- 1978-05-25 JP JP6282178A patent/JPS5436270A/en active Granted
- 1978-05-25 JP JP6281978A patent/JPS5436268A/en active Pending
- 1978-05-25 JP JP53062820A patent/JPS5814433B2/en not_active Expired
- 1978-05-25 JP JP6281878A patent/JPS5436267A/en active Granted
- 1978-06-07 CS CS783706A patent/CS203923B2/en unknown
- 1978-06-07 CS CS783705A patent/CS203922B2/en unknown
- 1978-06-13 ES ES470745A patent/ES470745A1/en not_active Expired
- 1978-06-13 ES ES470744A patent/ES470744A1/en not_active Expired
- 1978-06-13 ES ES470746A patent/ES470746A1/en not_active Expired
- 1978-06-13 ES ES470743A patent/ES470743A1/en not_active Expired
- 1978-07-05 SU SU782631651A patent/SU1015826A3/en active
1979
- 1979-02-01 PH PH22149A patent/PH14625A/en unknown
- 1979-02-01 PH PH22150A patent/PH13874A/en unknown
1980
- 1980-03-06 AT AT0124380A patent/AT364356B/en not_active IP Right Cessation
- 1980-03-06 AT AT0124480A patent/AT363470B/en not_active IP Right Cessation
- 1980-10-24 CA CA000363274A patent/CA1117541A/en not_active Expired
- 1980-10-24 CA CA363,273A patent/CA1110254A/en not_active Expired
- 1980-10-30 CH CH808580A patent/CH625235A5/en not_active IP Right Cessation
1981
- 1981-02-20 CH CH116181A patent/CH626358A5/en not_active IP Right Cessation
- 1981-02-20 CH CH116081A patent/CH626357A5/en not_active IP Right Cessation
- 1981-07-02 HK HK303/81A patent/HK30381A/en unknown
- 1981-07-02 HK HK304/81A patent/HK30481A/en unknown
- 1981-07-02 HK HK306/81A patent/HK30681A/en unknown
- 1981-07-02 HK HK307/81A patent/HK30781A/en unknown
- 1981-07-02 HK HK305/81A patent/HK30581A/en unknown
- 1981-12-09 NL NLAANVRAGE8105540,A patent/NL182805C/en not_active IP Right Cessation
- 1981-12-09 NL NLAANVRAGE8105539,A patent/NL182478C/en not_active IP Right Cessation
- 1981-12-09 NL NLAANVRAGE8105538,A patent/NL182477C/en not_active IP Right Cessation
- 1981-12-09 NL NLAANVRAGE8105537,A patent/NL182476C/en not_active IP Right Cessation
- 1981-12-30 MY MY262/81A patent/MY8100262A/en unknown
- 1981-12-30 MY MY287/81A patent/MY8100287A/en unknown
- 1981-12-30 MY MY267/81A patent/MY8100267A/en unknown
1982
- 1982-01-29 SE SE8200519A patent/SE445042B/en not_active IP Right Cessation
- 1982-01-29 SE SE8200518A patent/SE445041B/en not_active IP Right Cessation
- 1982-01-29 SE SE8200521A patent/SE452616B/en not_active IP Right Cessation
- 1982-01-29 SE SE8200522A patent/SE444565B/en not_active IP Right Cessation
- 1982-01-29 SE SE8200520A patent/SE444564B/en not_active IP Right Cessation
- 1982-06-03 NO NO821849A patent/NO150559C/en unknown
- 1982-06-03 NO NO821848A patent/NO150043C/en unknown
- 1982-06-03 NO NO821851A patent/NO150560C/en unknown
- 1982-06-03 NO NO821847A patent/NO150042C/en unknown
- 1982-06-03 NO NO821850A patent/NO821850L/en unknown
- 1982-12-07 YU YU02703/82A patent/YU270382A/en unknown
- 1982-12-13 YU YU2747/82A patent/YU42613B/en unknown
1983
- 1983-05-16 FI FI831702A patent/FI72720C/en not_active IP Right Cessation
- 1983-05-16 FI FI831701A patent/FI72723C/en not_active IP Right Cessation
- 1983-05-16 FI FI831700A patent/FI72119C/en not_active IP Right Cessation
- 1983-05-16 FI FI831704A patent/FI72721C/en not_active IP Right Cessation
- 1983-05-16 FI FI831703A patent/FI73424C/en not_active IP Right Cessation
- 1983-08-08 YU YU1663/83A patent/YU43190B/en unknown
- 1983-11-18 NO NO834236A patent/NO151365C/en unknown
1986
- 1986-07-09 DK DK325986A patent/DK153484C/en active
- 1986-07-09 DK DK326186A patent/DK154079C/en active
- 1986-07-09 DK DK326086A patent/DK153401C/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
FI72720B (en)	1987-03-31
FI831703A0 (en)	1983-05-16
JPS5318578A (en)	1978-02-20
FI72721B (en)	1987-03-31
DE2728499C2 (en)	1986-04-03
DE2760221C2 (en)	1989-10-05
NO151365B (en)	1984-12-17
CS203921B2 (en)	1981-03-31
DK326186D0 (en)	1986-07-09
ATA124480A (en)	1981-01-15
SU955859A3 (en)	1982-08-30
NL182476B (en)	1987-10-16
NO821850L (en)	1978-02-03
MX4597E (en)	1982-06-25
CH625798A5 (en)	1981-10-15
FI831704A0 (en)	1983-05-16
IE45645B1 (en)	1982-10-20
NO150043C (en)	1984-08-15
FI72721C (en)	1987-07-10
NL182477B (en)	1987-10-16
IE45643B1 (en)	1982-10-20
GB1538372A (en)	1979-01-17
DK153483B (en)	1988-07-18
HK30481A (en)	1981-07-10
FI72720C (en)	1987-07-10
PL115496B1 (en)	1981-04-30
NL7706811A (en)	1978-02-06
BG28849A3 (en)	1980-07-15
BR7703970A (en)	1978-07-04
NL182478B (en)	1987-10-16
HU185687B (en)	1985-03-28
PH13557A (en)	1980-06-26
CH626358A5 (en)	1981-11-13
BG28989A4 (en)	1980-08-15
HU186026B (en)	1985-05-28
HU180040B (en)	1983-01-28
NO150560C (en)	1984-11-07
DK153483C (en)	1988-11-28
FI831701A0 (en)	1983-05-16
FI831701L (en)	1983-05-16
IE45644B1 (en)	1982-10-20
NL182476C (en)	1988-03-16
DK153484C (en)	1988-11-28
NL8105537A (en)	1982-04-01
IE45642B1 (en)	1982-10-20
IE790587L (en)	1978-02-02
GR68938B (en)	1982-03-29
DK276177A (en)	1978-02-03
FI72723B (en)	1987-03-31
IE790585L (en)	1978-02-02
YU166383A (en)	1986-02-28
NL182478C (en)	1988-03-16
HK30681A (en)	1981-07-10
BG29136A3 (en)	1980-09-15
JPS5436270A (en)	1979-03-16
SE433079B (en)	1984-05-07
NL8105539A (en)	1982-04-01
HK30781A (en)	1981-07-10
NO151365C (en)	1985-03-27
FI73424C (en)	1987-10-09
PT66694B (en)	1978-11-17
AU2601777A (en)	1978-09-21
IE790586L (en)	1978-02-02
JPS5436271A (en)	1979-03-16
ES470744A1 (en)	1979-01-16
PL199798A1 (en)	1979-08-27
CH626357A5 (en)	1981-11-13
NO150043B (en)	1984-04-30
PT66694A (en)	1977-07-01
NL170955B (en)	1982-08-16
RO78952A (en)	1982-04-12
DK326086A (en)	1986-07-09
SE8200520L (en)	1982-01-29
YU270382A (en)	1983-10-31
RO74367A (en)	1981-11-24
FI771934A7 (en)	1978-02-03
FI831702L (en)	1983-05-16
PL215007A1 (en)	1979-12-17
FI831704L (en)	1983-05-16
AT364356B (en)	1981-10-12
GB1538374A (en)	1979-01-17
HU185686B (en)	1985-03-28
FI831700L (en)	1983-05-16
NL8105538A (en)	1982-04-01
PH13874A (en)	1980-10-24
CA1095921A (en)	1981-02-17
ES459994A1 (en)	1978-11-16
GB1538375A (en)	1979-01-17
DK325986A (en)	1986-07-09
YU43190B (en)	1989-04-30
IE45641B1 (en)	1982-10-20
HK30381A (en)	1981-07-10
EG13080A (en)	1981-03-31
MY8100262A (en)	1981-12-31
JPS5618596B2 (en)	1981-04-30
NO150559C (en)	1984-11-07
DE2760220C2 (en)	1987-08-20
SE445042B (en)	1986-05-26
ES470743A1 (en)	1979-01-16
NO772193L (en)	1978-02-03
CH625235A5 (en)	1981-09-15
PL115586B1 (en)	1981-04-30
IT1106258B (en)	1985-11-11
DK326186A (en)	1986-07-09
IE45641L (en)	1978-02-02
SE8200521L (en)	1982-01-29
JPS5814433B2 (en)	1983-03-18
FR2372821B1 (en)	1980-10-17
PL215008A1 (en)	1979-12-17
AT362790B (en)	1981-06-10
JPS5729034B2 (en)	1982-06-19
PH15185A (en)	1982-09-10
NL182805B (en)	1987-12-16
NO150042B (en)	1984-04-30
NO150561C (en)	1984-11-07
GB1538373A (en)	1979-01-17
PH14625A (en)	1981-10-12
NO821847L (en)	1978-02-03
BG28988A4 (en)	1980-08-15
NL182805C (en)	1988-05-16
AR216080A1 (en)	1979-11-30
DK153484B (en)	1988-07-18
CA1110254A (en)	1981-10-06
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DK153401B (en)	1988-07-11
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IE790584L (en)	1978-02-02
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NL170955C (en)	1983-01-17
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CA1117541A (en)	1982-02-02
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NO150560B (en)	1984-07-30
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CS203923B2 (en)	1981-03-31
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YU146977A (en)	1983-06-30
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LU77600A1 (en)	1978-02-01
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YU40166B (en)	1985-08-31
MY8100287A (en)	1981-12-31
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DK153401C (en)	1988-11-28
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NO821849L (en)	1978-02-03
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HK30581A (en)	1981-07-10
DK154079C (en)	1989-02-27

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