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GB803372A - Hydroxychromone derivatives and methods of preparing the same - Google Patents

Hydroxychromone derivatives and methods of preparing the same

Info

Publication number
GB803372A
GB803372A GB33428/56A GB3342856A GB803372A GB 803372 A GB803372 A GB 803372A GB 33428/56 A GB33428/56 A GB 33428/56A GB 3342856 A GB3342856 A GB 3342856A GB 803372 A GB803372 A GB 803372A
Authority
GB
United Kingdom
Prior art keywords
ethyl
dimethylchromone
oxyacetate
oxyacetic acid
oxyacetic
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
GB33428/56A
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.)
Recordati Laboratorio Farmacologico SpA
Original Assignee
Recordati Laboratorio Farmacologico SpA
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 Recordati Laboratorio Farmacologico SpA filed Critical Recordati Laboratorio Farmacologico SpA
Publication of GB803372A publication Critical patent/GB803372A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D311/00Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D311/04Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
    • C07D311/58Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Hydrogenated Pyridines (AREA)

Abstract

The invention comprises compounds having a coronaro-dilating action of the general formula <FORM:0803372/IV (b)/1> wherein (a) R and R1 are both methyl groups, the chain R2OOC.CH2O- is indifferently in position 6 or 7, and R2 is H, Na, K, C2H5, (C2H5)2N(HCl).CH2.CH2- or the hydrochloride of the b -piperidino-ethyl radical; (b) R is methyl, R1 is ethyl, the chain R2OOC.CH2O- is in the 7-position and R2 is as in (a) or (CH3)2N(HCl).CH2.CH2-; or (c) R is H and R1 is phenyl, the chain R2OOC.CH2O- is in the 7-position and R2 is as in (b), or another alkyl group of from one to six carbon atoms; and a process for their preparation by boiling in solution or suspension a substituted 6- or 7-hydroxychromone with an alkyl halogen acetate, in which the alkyl group has from one to six carbon atoms, in the presence of an alkali metal carbonate for between seven and twelve hours. The oxyacetic ester is then recovered from the mixture and, if required, subjected to alkaline alcoholic hydrolysis at 40 DEG C. to yield the corresponding alkali metal salt, which may then be acidified to give the free acid, or boiled with the hydrochlorides of b -dimethylaminoethyl chloride, b -diethylaminoethyl chloride or b -piperidinoethyl chloride in isopropanol for from four to five hours to yield the corresponding amino-esters. The free acids may also be obtained direct by acid hydrolysis of the original oxyacetic esters. In examples: (1) 6-hydroxy-2,3 - dimethylchromone, ethyl bromoacetate, and potassium carbonate are refluxed in acetone, yielding 2,3 - dimethyl - chromone 6 - ethyl oxyacetate; similarly (2) to (15) are prepared following: 2,3 - dimethylchromone - 7 - ethyl oxyacetate, 2 - ethyl - 3 - methylchromone - 7 - ethyl oxyacetate and the methyl, ethyl, n-propyl, isopropyl, allyl, secbutyl, isobutyl, butyl, amyl, isoamyl, inactive amyl, and hexyl esters of flavone-7-oxyacetic acid; (16) 2,3-dimethylchromone-6-ethyl oxyacetate in ethanol is treated with ethanolic KOH when the potassium salt of 2,3-dimethylchromone-6-oxyacetic acid separates; likewise (17) to (19), are prepared 2,3-dimethylchromone-7-potassium oxyacetate, 2 - ethyl - 3 - methylchromone - 7 - potassium oxyacetate and flavone - 7 - sodium oxyacetate; (20) 2,3-dimethylchromone-6-ethyl oxyacetate is refluxed with 70 per cent H2SO4, giving 2,3-dimethylchromone-6-oxyacetic acid; (21) to (23), as in (20) are prepared 2,3-dimethylchromone - 7 - oxyacetic acid, 2 - ethyl - 3 - methylchromone-7-oxyacetic acid and flavone-7-oxyacetic acid; (24) the potassium salt of 2,3-dimethylchromone-6-oxyacetic acid is reacted with b - diethylaminoethyl chloride hydrochloride in isopropanol giving 2,3-dimethylchromone - 6 - b - diethylaminoethyl oxyacetate hydrochloride; likewise (25) to (33) are prepared the b -piperidinoethyl and b -diethylaminoethyl esters of 2,3-dimethylchromone-6- and 7-oxyacetic acids, of 2-ethyl-3-methylchromone-7-oxyacetic acid and of flavone 7-oxyacetic acid in the form of their hydrochlorides, and also the b -diethylaminoethyl esters of the two last-mentioned acids, again as their hydrochloride salts.
GB33428/56A 1955-11-02 1956-11-01 Hydroxychromone derivatives and methods of preparing the same Expired GB803372A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT803372X 1955-11-02

Publications (1)

Publication Number Publication Date
GB803372A true GB803372A (en) 1958-10-22

Family

ID=11316923

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33428/56A Expired GB803372A (en) 1955-11-02 1956-11-01 Hydroxychromone derivatives and methods of preparing the same

Country Status (1)

Country Link
GB (1) GB803372A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1193511B (en) * 1961-03-16 1965-05-26 Cassella Farbwerke Mainkur Ag Process for the preparation of derivatives of 7-oxychromone
DE1210882B (en) * 1961-07-14 1966-02-17 Cassella Farbwerke Mainkur Ag Process for the preparation of derivatives of 7-oxychromone
DE1290150B (en) * 1960-08-04 1969-03-06 Blaise Rolland Process for the production of the disodium salt of flavone-5, 7-di- (oxyacetic acid)
EP0248420A3 (en) * 1986-06-04 1988-10-12 Daiichi Seiyaku Co. Ltd. Benzopyran derivatives
WO2004017964A1 (en) 2002-08-19 2004-03-04 Pfizer Products Inc. Combination therapy for hyperproliferative diseases
WO2007062314A2 (en) 2005-11-23 2007-05-31 Bristol-Myers Squibb Company Heterocyclic cetp inhibitors
WO2008070496A2 (en) 2006-12-01 2008-06-12 Bristol-Myers Squibb Company N- ( (3-benzyl) -2, 2- (bis-phenyl) -propan-1-amine derivatives as cetp inhibitors for the treatment of atherosclerosis and cardiovascular diseases
EP2392567A1 (en) 2005-10-21 2011-12-07 Bristol-Myers Squibb Company Benzothiazine derivatives and their use as lxr modulators
WO2014170786A1 (en) 2013-04-17 2014-10-23 Pfizer Inc. N-piperidin-3-ylbenzamide derivatives for treating cardiovascular diseases
WO2016055901A1 (en) 2014-10-08 2016-04-14 Pfizer Inc. Substituted amide compounds
WO2020150473A2 (en) 2019-01-18 2020-07-23 Dogma Therapeutics, Inc. Pcsk9 inhibitors and methods of use thereof

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1290150B (en) * 1960-08-04 1969-03-06 Blaise Rolland Process for the production of the disodium salt of flavone-5, 7-di- (oxyacetic acid)
DE1193511B (en) * 1961-03-16 1965-05-26 Cassella Farbwerke Mainkur Ag Process for the preparation of derivatives of 7-oxychromone
DE1210882B (en) * 1961-07-14 1966-02-17 Cassella Farbwerke Mainkur Ag Process for the preparation of derivatives of 7-oxychromone
EP0248420A3 (en) * 1986-06-04 1988-10-12 Daiichi Seiyaku Co. Ltd. Benzopyran derivatives
US4841076A (en) * 1986-06-04 1989-06-20 Daiichi Seiyaku Co., Ltd. Benzopyran derivatives
WO2004017964A1 (en) 2002-08-19 2004-03-04 Pfizer Products Inc. Combination therapy for hyperproliferative diseases
EP2392567A1 (en) 2005-10-21 2011-12-07 Bristol-Myers Squibb Company Benzothiazine derivatives and their use as lxr modulators
WO2007062314A2 (en) 2005-11-23 2007-05-31 Bristol-Myers Squibb Company Heterocyclic cetp inhibitors
WO2008070496A2 (en) 2006-12-01 2008-06-12 Bristol-Myers Squibb Company N- ( (3-benzyl) -2, 2- (bis-phenyl) -propan-1-amine derivatives as cetp inhibitors for the treatment of atherosclerosis and cardiovascular diseases
WO2014170786A1 (en) 2013-04-17 2014-10-23 Pfizer Inc. N-piperidin-3-ylbenzamide derivatives for treating cardiovascular diseases
WO2016055901A1 (en) 2014-10-08 2016-04-14 Pfizer Inc. Substituted amide compounds
WO2020150473A2 (en) 2019-01-18 2020-07-23 Dogma Therapeutics, Inc. Pcsk9 inhibitors and methods of use thereof
EP4470609A2 (en) 2019-01-18 2024-12-04 Astrazeneca AB Pcsk9 inhibitors and methods of use thereof

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