EP1680383A2 - Verfahren zur herstellung von phytofluen - Google Patents
Verfahren zur herstellung von phytofluenInfo
- Publication number
- EP1680383A2 EP1680383A2 EP04790438A EP04790438A EP1680383A2 EP 1680383 A2 EP1680383 A2 EP 1680383A2 EP 04790438 A EP04790438 A EP 04790438A EP 04790438 A EP04790438 A EP 04790438A EP 1680383 A2 EP1680383 A2 EP 1680383A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- formula
- acid
- aldehyde
- acetal
- independently
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/56—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds
- C07C45/57—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom
- C07C45/60—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom in six-membered rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
- C07C1/32—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from compounds containing hetero-atoms other than or in addition to oxygen or halogen
- C07C1/34—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from compounds containing hetero-atoms other than or in addition to oxygen or halogen reacting phosphines with aldehydes or ketones, e.g. Wittig reaction
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/51—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
- C07C45/511—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups
- C07C45/515—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups the singly bound functional group being an acetalised, ketalised hemi-acetalised, or hemi-ketalised hydroxyl group
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/56—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds
- C07C45/57—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom
- C07C45/59—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom in five-membered rings
Definitions
- the present invention relates to a new process for the preparation of phytofluen (7,8,11,12,7 ', 8'-hexahydrolycopin) of the formula I.
- Phytofluen is a sought-after active ingredient for protecting the skin from damage caused by oxygen or UV radiation (described, inter alia, in WO 03/041678 and WO 00/13654).
- Phytofluen a precursor to the biogenesis of the carotenoid lycopene, can be isolated from natural sources. However, the availability of these sources is limited, and because phytofluene from other biogenetic precursors such as e.g. If phytoene or zeta-carotene is accompanied, it is also difficult to get to the pure active ingredient in this way.
- the strategy of choice is therefore total chemical synthesis.
- the synthetic challenge with phytofluene is its asymmetrical molecular structure (bond Cn-C ⁇ 2 is saturated; bond dv-C ⁇ is olefinic).
- nerolidol VII is converted into aldehyde VIII in two stages.
- the double bond Cn'-Ci 2 ' is then introduced by Wittig-Horner reaction of VIII with the phosphonate IX. This is followed by the reduction of the ester X to the alcohol XI and its reoxidation with manganese dioxide to the aldehyde V.
- R 1 is aryl and X "is the anion equivalent of an inorganic or organic acid, with an aldehyde of the formula III
- substituents R 2 and R 3 independently of one another are -CC 8 alkyl or together with the oxygen atoms and the carbon atom to which they are attached a 1, 3-dioxolane or 1,3-dioxane ring of the following Can form structures
- R 4 and R 5 and R 6 can each independently be hydrogen or C 1 -C 4 -alkyl
- R 7 is aryl and Y "is the anion equivalent of an inorganic or organic acid, condensed to phytofluene.
- the alkyl radicals for R 2 and R 3 are linear or branched d-Cs-alkyl chains, for example methyl, ethyl, n-propyl, 1-methylethyl, n-butyl, 1-methylpropyl, 2-methylpropyl, 1, 1-dimethylethyl, n-pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 2,2-dimethylpropyl, 1-ethylpropyl, n-hexyl, 1,1- dimethylpropyl, 1,2-dimethylpropyl, 1- Methylpentyl, 2-methylpentyl, 3-methylpentyl, 4-methylpentyl, 1, 1-dimethylbutyl, 1, 2-dimethylbutyl, 1, 3-dimethylbutyl, 2,2-dimethylbutyl, 2,3-dimethylbutyl, 3,3- Dimethylbutyl, 1-ethyl, n-propyl, 1-methyl
- Preferred alkyl radicals for R 2 and R 3 are methyl, ethyl, n-propyl and 1-methylethyl, particularly preferably methyl and ethyl.
- Linear or branched C 1 -C 4 -alkyl chains for example methyl, ethyl, n-propyl, 1-methylethyl, n-butyl, 1-methylpropyl, 2-methylpropyl and 1, 1-dimethylethyl, may be mentioned as alkyl radicals for R 4 to R 6 ,
- Preferred radicals for R 4 to R 6 are hydrogen and methyl.
- aryl for R 1 and R 7 denotes customary aryl residues occurring in phosphonium salts, such as phenyl, toluene, naphthyl, optionally substituted in each case, preferably phenyl.
- radicals X " and Y " stand for an anion equivalent of an inorganic or organic acid, preferably a strong inorganic or organic acid.
- strong acid includes hydrohalic acids (especially hydrochloric acid and hydrobromic acid), sulfuric acid, phosphoric acid, sulfonic acids and other inorganic or organic acids with a comparable degree of dissociation.
- strong organic acids are also to be understood as d-Ce alkanoic acids such as formic acid, acetic acid, propionic acid, butyric acid and caproic acid.
- the first step a) of the process according to the invention comprises the olefination reaction of a phosphonium salt of the general formula II with a C 5 -acetal aldehyde of the general formula III,
- the condensation of II with III can, for example, in an inert organic solvent e.g. in open-chain or cyclic ethers such as diethyl ether, diisopropyl ether, methyl tert-butyl ether, 1,4-dioxane or THF, in halogenated hydrocarbons such as dichloromethane, chloroform, in aromatic hydrocarbons such as toluene, xylene or benzene or in polar solvents such as dimethylformamide, dimethyl sulfoxide or Acetonitrile can be carried out.
- Preferred solvents are diethyl ether, toluene, THF and DMSO or mixtures thereof.
- All bases customary for such condensation can be used as the base, e.g. Alkali metal hydroxides such as sodium hydroxide, potassium hydroxide or lithium hydroxide; Alkali metal hydrides such as sodium hydride or potassium hydride.
- Lithium organyls such as e.g. n-butyllithium, tert. Butyl lithium, phenyllithium or alkali metal amides such as lithium, potassium or sodium amide, lithium diisopropyl amide but also alkali metal hexamethyl disilazide in question.
- the preferred base for the Wittig reaction according to the invention is sodium or potassium hexamethyldisiiazide, n-butyllithium and potassium or sodium amide.
- the amount of base used is generally in the range from 0.8 to 5 mol, preferably 1 to 3 mol, per mol of the phosphonium salt II used. If X 'is a halide anion, oxiranes can also advantageously be used as latent bases (see Chem. Ber. 1974, 107, 2050).
- Lithium organyls in hexane or solutions of alkali metal alcoholates in the corresponding alcohol or oxiranes, especially 1, 2-epoxy butane, are preferably used as bases for this Wittig reaction, without additional solvent or in a mixture with one of the abovementioned solvents or a lower alkanol.
- a preferred embodiment of process step a) is characterized in that the bromide of the formula IIa is used as the phosphonium salt
- substituents R 4 and R 5 independently of one another denote hydrogen and / or methyl, preferably in each case together hydrogen or methyl, particularly preferably together methyl.
- Aldehydes of the type IM are known as building blocks for technical polyene synthesis ("Carotenoids”, Vol. 2, “Synthesis”, p. 125 f .; Birkhäuser Verlag, 1996, and literature cited there).
- step b) of the process according to the invention the acetal group in IV or IVa is hydrolyzed to the aldehyde function V.
- acetal cleavage e.g. B. with dilute mineral acids such as sulfuric acid. It has proven particularly suitable to catalyze the hydrolysis of the acetal function with citric acid.
- the citric acid is advantageously used in an amount of 5 to 50 mol%, preferably 20 to 30 mol%, based on the Compound of formula IV or Iva used.
- the hydrolysis is preferably carried out in aqueous media, in particular in a mixture of water with a water-miscible organic solvent, such as CC 4 alkanols, for example methanol, ethanol or isopropanol, preferably ethanol, at a temperature of suitably 0 ° C. to the boiling point of the solvent, preferably 25 ° C to 55 ° C.
- a water-miscible organic solvent such as CC 4 alkanols, for example methanol, ethanol or isopropanol, preferably ethanol
- Geranylgeranyltriphenylphosphonium bromide of the formula Via is used as the preferred phosphonium salt VI
- the invention also relates to a process for the preparation of the C 20 aldehyde of the formula V,
- R 1 is aryl and X 'is the anion equivalent of an inorganic or organic acid, with an aldehyde of the formula III
- substituents R 2 and R 3 independently of one another represent d-Cs-alkyl or together with the oxygen atoms and the carbon atom to which they are attached form a 1, 3-dioxolane or 1, 3-dioxane ring of the following structures can,
- R 4 and R 5 and R 6 can each independently of one another denote hydrogen or dC 4 alkyl
- the invention also relates to acetals of the general formula IV,
- R 2 and R 3 independently of one another are -C 8 -alkyl or together with the oxygen atoms and the carbon atom to which they are attached a 1, 3-dioxolane or 1, 3-dioxane ring of the following Can form structures in which R 4 and R 5 and R 6 can each independently be hydrogen or C 1 -C 4 -alkyl,
- the two organic phases were combined, washed with 40 ml of saturated sodium chloride solution and dried together with the first organic phase over sodium sulfate.
- the solvent was distilled off on a rotary evaporator at 50 ° C. to 20 mbar.
- the mixture was then hydrolyzed by the dropwise addition of 150 ml of ice water, and the organic upper phase was separated off, washed twice with 150 ml of ice water each time and transferred Dried sodium sulfate and evaporated on a rotary evaporator at 50 ° C to 20 mbar.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10349983A DE10349983A1 (de) | 2003-10-24 | 2003-10-24 | Verfahren zur Herstellung von Phytofluen |
PCT/EP2004/011582 WO2005042446A2 (de) | 2003-10-24 | 2004-10-15 | Verfahren zur herstellung von phytofluen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1680383A2 true EP1680383A2 (de) | 2006-07-19 |
Family
ID=34485086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04790438A Withdrawn EP1680383A2 (de) | 2003-10-24 | 2004-10-15 | Verfahren zur herstellung von phytofluen |
Country Status (7)
Country | Link |
---|---|
US (1) | US7271296B2 (de) |
EP (1) | EP1680383A2 (de) |
JP (1) | JP2007512235A (de) |
CN (1) | CN101035748A (de) |
CA (1) | CA2542052A1 (de) |
DE (1) | DE10349983A1 (de) |
WO (1) | WO2005042446A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2130833A1 (de) | 2008-06-05 | 2009-12-09 | DSM IP Assets B.V. | Verfahren zur Herstellung von Zeacarotinen |
BR112013007818B1 (pt) * | 2010-10-01 | 2021-07-13 | Dsm Ip Assets B.V | Processo para a produção de peretinoína |
US11339113B2 (en) | 2018-12-19 | 2022-05-24 | Firmenich Sa | Process for the preparation of cis-alpha,beta substituted cyclopentanones |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4482582A (en) | 1982-09-03 | 1984-11-13 | Morey Weisman | Modified polyurethane product having improved load bearing characteristics |
GB8627658D0 (en) | 1986-11-19 | 1986-12-17 | Bp Chem Int Ltd | Polyurethane froth foams |
NZ222563A (en) | 1986-11-19 | 1990-08-28 | Bp Chem Int Ltd | Polyurethane froth foams |
US4810729A (en) | 1987-10-23 | 1989-03-07 | Basf Corporation | Flexible flame resistant polyurethane foams |
TW482783B (en) | 1997-08-19 | 2002-04-11 | Mitsui Chemicals Inc | Flexible polyurethane foam with high durability |
IL126076A (en) | 1998-09-04 | 2005-05-17 | Ibr Ltd | Transparent composition comprising phytoene and phytofluene |
DE10111823A1 (de) | 2001-03-13 | 2002-09-26 | Basf Ag | Verfahren zur Herstellung von Polyurethan-Weichschaumstoffen |
IL146496A0 (en) | 2001-11-14 | 2002-07-25 | Lycored Natural Prod Ind Ltd | Carotenoid composition and method for protecting skin |
-
2003
- 2003-10-24 DE DE10349983A patent/DE10349983A1/de not_active Withdrawn
-
2004
- 2004-10-15 JP JP2006536009A patent/JP2007512235A/ja not_active Withdrawn
- 2004-10-15 EP EP04790438A patent/EP1680383A2/de not_active Withdrawn
- 2004-10-15 WO PCT/EP2004/011582 patent/WO2005042446A2/de active Application Filing
- 2004-10-15 US US10/595,503 patent/US7271296B2/en not_active Expired - Fee Related
- 2004-10-15 CA CA002542052A patent/CA2542052A1/en not_active Abandoned
- 2004-10-15 CN CNA2004800313388A patent/CN101035748A/zh active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2005042446A2 * |
Also Published As
Publication number | Publication date |
---|---|
US7271296B2 (en) | 2007-09-18 |
CA2542052A1 (en) | 2005-05-12 |
CN101035748A (zh) | 2007-09-12 |
WO2005042446A2 (de) | 2005-05-12 |
WO2005042446A3 (de) | 2007-03-15 |
DE10349983A1 (de) | 2005-05-25 |
JP2007512235A (ja) | 2007-05-17 |
US20070004925A1 (en) | 2007-01-04 |
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Legal Events
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Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
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RIC1 | Information provided on ipc code assigned before grant |
Ipc: C07C 11/21 20060101AFI20070928BHEP |
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17Q | First examination report despatched |
Effective date: 20080104 |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: BASF SE |
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18D | Application deemed to be withdrawn |
Effective date: 20080501 |