LT3772B - Method for the preparation of xantynes nearly free from fluorescent impurity - Google Patents

Method for the preparation of xantynes nearly free from fluorescent impurity Download PDF

Info

Publication number
LT3772B
LT3772B LTIP1463A LTIP1463A LT3772B LT 3772 B LT3772 B LT 3772B LT IP1463 A LTIP1463 A LT IP1463A LT IP1463 A LTIP1463 A LT IP1463A LT 3772 B LT3772 B LT 3772B
Authority
LT
Lithuania
Prior art keywords
xanthines
preparation
xantynes
fluorescent
precipitation
Prior art date
Application number
LTIP1463A
Other languages
English (en)
Lithuanian (lt)
Inventor
Rudolf Knieps
Ottmar Jaenicke
Walter Schoenfeld
Original Assignee
Hoechst Ag
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 Hoechst Ag filed Critical Hoechst Ag
Publication of LTIP1463A publication Critical patent/LTIP1463A/xx
Publication of LT3772B publication Critical patent/LT3772B/lt

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D473/00Heterocyclic compounds containing purine ring systems
    • C07D473/02Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6
    • C07D473/04Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms
    • C07D473/06Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms with radicals containing only hydrogen and carbon atoms, attached in position 1 or 3
    • C07D473/08Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms with radicals containing only hydrogen and carbon atoms, attached in position 1 or 3 with methyl radicals in positions 1 and 3, e.g. theophylline
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D473/00Heterocyclic compounds containing purine ring systems
    • C07D473/02Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6
    • C07D473/04Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms
    • C07D473/06Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms with radicals containing only hydrogen and carbon atoms, attached in position 1 or 3
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D473/00Heterocyclic compounds containing purine ring systems
    • C07D473/02Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6
    • C07D473/04Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms
    • C07D473/06Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms with radicals containing only hydrogen and carbon atoms, attached in position 1 or 3
    • C07D473/10Heterocyclic compounds containing purine ring systems with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6 two oxygen atoms with radicals containing only hydrogen and carbon atoms, attached in position 1 or 3 with methyl radicals in positions 3 and 7, e.g. theobromine

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Luminescent Compositions (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
  • Saccharide Compounds (AREA)
  • Cosmetics (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
LTIP1463A 1990-02-15 1993-11-12 Method for the preparation of xantynes nearly free from fluorescent impurity LT3772B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4004618A DE4004618A1 (de) 1990-02-15 1990-02-15 Verfahren zur gewinnung annaehernd fluoreszenzfreier xanthine

Publications (2)

Publication Number Publication Date
LTIP1463A LTIP1463A (en) 1995-05-25
LT3772B true LT3772B (en) 1996-03-25

Family

ID=6400165

Family Applications (1)

Application Number Title Priority Date Filing Date
LTIP1463A LT3772B (en) 1990-02-15 1993-11-12 Method for the preparation of xantynes nearly free from fluorescent impurity

Country Status (19)

Country Link
US (1) US5144033A (pl)
EP (1) EP0442401B1 (pl)
JP (1) JP2550443B2 (pl)
KR (1) KR0169984B1 (pl)
CN (1) CN1032002C (pl)
AT (1) ATE104979T1 (pl)
CZ (1) CZ279936B6 (pl)
DE (2) DE4004618A1 (pl)
DK (1) DK0442401T3 (pl)
ES (1) ES2054383T3 (pl)
IN (1) IN171029B (pl)
LT (1) LT3772B (pl)
LV (1) LV10454B (pl)
PL (1) PL165701B1 (pl)
PT (1) PT96766B (pl)
RO (1) RO107947B1 (pl)
RU (1) RU1811531C (pl)
SK (1) SK278938B6 (pl)
UA (1) UA19846A (pl)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE21220C (de) CH. W. siemens in London Neuerungen an rotirenden Oefen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD21220A (pl) *
DE138444C (pl) * 1901-12-31
GB190504959A (en) * 1905-03-09 1905-10-05 Anilin Fabrikation Ag Manufacture of Soluble Compounds of Theobromine.
GB302207A (en) * 1927-09-12 1928-12-12 Albert Boehringer Process for the extraction of theo-bromine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE21220C (de) CH. W. siemens in London Neuerungen an rotirenden Oefen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
FRITZ ULLMANN: "Ullmanns encyclopedia of industrial chemistry, 4th ed", pages: 579

Also Published As

Publication number Publication date
LTIP1463A (en) 1995-05-25
JP2550443B2 (ja) 1996-11-06
IN171029B (pl) 1992-07-04
DE4004618A1 (de) 1991-08-22
EP0442401B1 (de) 1994-04-27
JPH04330074A (ja) 1992-11-18
CN1054067A (zh) 1991-08-28
ATE104979T1 (de) 1994-05-15
UA19846A (uk) 1997-12-25
RU1811531C (ru) 1993-04-23
CS9100360A2 (en) 1991-09-15
RO107947B1 (ro) 1994-01-31
DK0442401T3 (da) 1994-09-05
EP0442401A1 (de) 1991-08-21
CN1032002C (zh) 1996-06-12
ES2054383T3 (es) 1994-08-01
PT96766A (pt) 1991-10-31
SK278938B6 (sk) 1998-04-08
PL165701B1 (pl) 1995-01-31
PT96766B (pt) 1998-07-31
US5144033A (en) 1992-09-01
PL289066A1 (en) 1991-09-23
KR0169984B1 (ko) 1999-02-01
LV10454B (en) 1996-02-20
KR910015577A (ko) 1991-09-30
DE59101466D1 (de) 1994-06-01
CZ279936B6 (cs) 1995-09-13
LV10454A (lv) 1995-02-20

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Legal Events

Date Code Title Description
PC9A Transfer of patents

Free format text: AVENTIS PHARMA DEUTSCHLAND GMBH, 65926 FRANKFURT AM MAIN, INDUSTRIEPARK HOCHST, DE 000928

PD9A Change of patent owner

Owner name: SANOFI-AVENTIS DEUTSCHLAND GMBH, DE

Effective date: 20051026

MK9A Expiry of a patent

Effective date: 20131112