BE486924A - - Google Patents
Info
- Publication number
- BE486924A BE486924A BE486924DA BE486924A BE 486924 A BE486924 A BE 486924A BE 486924D A BE486924D A BE 486924DA BE 486924 A BE486924 A BE 486924A
- Authority
- BE
- Belgium
- Prior art keywords
- podocarpinol
- acid
- methylpodocarpinol
- preparation
- ether
- Prior art date
Links
- FATTYFLVMCATET-UHFFFAOYSA-N 8-(hydroxymethyl)-4b,8-dimethyl-5,6,7,8a,9,10-hexahydrophenanthren-3-ol Chemical compound C1=C(O)C=C2C3(C)CCCC(C)(CO)C3CCC2=C1 FATTYFLVMCATET-UHFFFAOYSA-N 0.000 claims description 13
- HMPJUDGZKICNFY-UHFFFAOYSA-N (6-methoxy-1,4a-dimethyl-2,3,4,9,10,10a-hexahydrophenanthren-1-yl)methanol Chemical compound OCC1(C)CCCC2(C)C3=CC(OC)=CC=C3CCC21 HMPJUDGZKICNFY-UHFFFAOYSA-N 0.000 claims description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 12
- 238000002360 preparation method Methods 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VJILEYKNALCDDV-OIISXLGYSA-N (1S,4aS,10aR)-1,2,3,4,4a,9,10,10a-octahydro-6-hydroxy-1,4a-dimethylphenanthrene-1-carboxylic acid Chemical compound C1=C(O)C=C2[C@@]3(C)CCC[C@@](C(O)=O)(C)[C@@H]3CCC2=C1 VJILEYKNALCDDV-OIISXLGYSA-N 0.000 description 2
- 229960000583 Acetic Acid Drugs 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229930001613 podocarpic acid Natural products 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000017858 demethylation Effects 0.000 description 1
- 238000010520 demethylation reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 239000008079 hexane Substances 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-N hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- HPQVWDOOUQVBTO-UHFFFAOYSA-N lithium aluminium hydride Substances [Li+].[Al-] HPQVWDOOUQVBTO-UHFFFAOYSA-N 0.000 description 1
- OCZDCIYGECBNKL-UHFFFAOYSA-N lithium;alumanuide Chemical compound [Li+].[AlH4-] OCZDCIYGECBNKL-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- BSKWXDWRTACMCC-QRQLOZEOSA-N methyl (1S,4aS,10aR)-6-methoxy-1,4a-dimethyl-2,3,4,9,10,10a-hexahydrophenanthrene-1-carboxylate Chemical compound C1=C(OC)C=C2[C@@]3(C)CCC[C@@](C(=O)OC)(C)[C@@H]3CCC2=C1 BSKWXDWRTACMCC-QRQLOZEOSA-N 0.000 description 1
- HRZWXLUBKWXXNM-UHFFFAOYSA-N methyl 6-hydroxy-1,4a-dimethyl-2,3,4,9,10,10a-hexahydrophenanthrene-1-carboxylate Chemical compound C1=C(O)C=C2C3(C)CCCC(C(=O)OC)(C)C3CCC2=C1 HRZWXLUBKWXXNM-UHFFFAOYSA-N 0.000 description 1
- 230000011987 methylation Effects 0.000 description 1
- 238000007069 methylation reaction Methods 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/01—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis
- C07C37/055—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis the substituted group being bound to oxygen, e.g. ether group
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
- C07C39/12—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings
- C07C39/17—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings containing other rings in addition to the six-membered aromatic rings, e.g. cyclohexylphenol
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2603/00—Systems containing at least three condensed rings
- C07C2603/02—Ortho- or ortho- and peri-condensed systems
- C07C2603/04—Ortho- or ortho- and peri-condensed systems containing three rings
- C07C2603/22—Ortho- or ortho- and peri-condensed systems containing three rings containing only six-membered rings
- C07C2603/26—Phenanthrenes; Hydrogenated phenanthrenes
Description
<Desc/Clms Page number 1>
Préparation de podocarpinol.
L'invention concerne un nouveau composé, le podocarpinol, et un procédé de préparation du podocarpinol.
Le nouveau composé conforme à la présente invention à une formule de structure représentée ci-dessous:
EMI1.1
On a préparé différents autres dérivés à partir de l'acide podocarpique. Ainsi, dans le Journal of the British Chemical Society, 1006 (1938)., Sherwood et Short décrivent
<Desc/Clms Page number 2>
la préparation de podocarpate de méthyle, o-méthylpodocarpate de méthyle, et acide o-méthylpodocarpique. Dans le J.Am.
Chem. Soc. 64, 928 (1942), Campbell et Todd décrivent la préparation de chlorure d'o-méthylpodocarbpoyle à partir de l'acide o-méthylpodocarpique, et la préparation subséquente de o-méthyl- podocarpinol en passant par l'o-méthylpodocarpinal.
La présente invention concerne la préparation de podocarpinol à partir d'o-méthylpodocarpinol, ce dernier ayant la formule:
EMI2.1
Suivant la présente invention, on déméthyle le composé connu o-méthylpodocarpinol, par exemple par réaction de o-méthylpodocarpinol dans une solution d'acide acétique avec un acide halogéné tel que l'acide chlorhydrique, l'acide bromhydrique ou l'acide iodhydrique. Le mélange de réaction est reflué pendant une durée supérieure à 6 heures, par exemple entre six et dix heures' Cette réaction produit le podocarpinol.
EXEMPLE.
On dissout 4 grs d'o-méthylpodocarpinol dans 225 ml d'acide acétique glacial, puis on ajoute 110 ml d'acide chlorhydrique concentré et 25 ml d'eau. On reflue cette solution oendant 10 heures puis on la concentre à la moitié de son vclume dans le vide. Par addition de 500 ml d'eau, on provoque la séparation d'une huile qu'on enlève et dissout dans l'éther. On extrait alors la solution dans l'éther par
<Desc/Clms Page number 3>
de l'hydroxyde de sodium aqueux à 1% pour séparer le produit désiré, le podocarpinol.
L'acidification de la solution alcaline par l'acide sulfurique dilué dans une huile qui est absorbée dans de l'éther. Après lavage à l'eau de la solution dans l'éther puis séchage sur du sulfate de soude anhydre, on concentre l'éther et ajoute de l'hexane. Par repos, 0,01 gr de po- docarpinol brut cristallise de la solution; point de fusion 174-178 C. Par recristallisation à partir de l'éther, on obtient du podocarpinol qui fond à 176-178 C.
On remarquera qu'on peut également préparer le podocar- pinol par réaction de l'acide pcdocarpique avec l'hydrure de lithium aluminium, comme décrit dans le brevet de même date delà Demanderesse, intitulé " Procédé de réduction d'acide podocarpique et de ses dérivés.". On remarquera aussi qu'une détermination du point de fusion d'un mélange du produit prove- nant de l'exemple donné plus haut et de podocarpinol préparé suivant le brevet précité ne présente aucun abaissement. On remarque également que le podocarpinol préparé par le procédé dudit brevet donne, par méthylation, de l'o-méthylpodocarpinol qui ne produit aucun abaissement lors de la détermination du point de fusion d'un mélange avec un échantillon de o-méthylpodo- carpinol connu.
On notera en outre que le procédé par réduction décrit dans le brevet précité peut être appliqué à la préparation d'o- méthylpodocarpinol dont on peut préparer le podocarpinol par déméthylation par le procédé ici décrit.
REVENDICATIONS
1.- A titre de produit industriel nouveau, le composé dénommé podocarpinol.
**ATTENTION** fin du champ DESC peut contenir debut de CLMS **.
<Desc / Clms Page number 1>
Preparation of podocarpinol.
The invention relates to a novel compound, podocarpinol, and a process for the preparation of podocarpinol.
The new compound in accordance with the present invention has a structural formula shown below:
EMI1.1
Various other derivatives have been prepared from podocarpic acid. Thus, in the Journal of the British Chemical Society, 1006 (1938)., Sherwood and Short describe
<Desc / Clms Page number 2>
the preparation of methyl podocarpate, methyl o-methylpodocarpate, and o-methylpodocarpic acid. In the J.Am.
Chem. Soc. 64, 928 (1942), Campbell and Todd describe the preparation of o-methylpodocarbpoyl chloride from o-methylpodocarpic acid, and the subsequent preparation of o-methyl-podocarpinol via o-methylpodocarpinal.
The present invention relates to the preparation of podocarpinol from o-methylpodocarpinol, the latter having the formula:
EMI2.1
According to the present invention, the known compound o-methylpodocarpinol is demethylated, for example by reaction of o-methylpodocarpinol in a solution of acetic acid with a halogenated acid such as hydrochloric acid, hydrobromic acid or hydriodic acid. The reaction mixture is refluxed for a period of more than 6 hours, for example between six and ten hours. This reaction produces podocarpinol.
EXAMPLE.
4 g of o-methylpodocarpinol are dissolved in 225 ml of glacial acetic acid, then 110 ml of concentrated hydrochloric acid and 25 ml of water are added. This solution is refluxed for 10 hours and then concentrated to half of its anvil in vacuum. By adding 500 ml of water, an oil is separated, which is removed and dissolved in ether. The solution is then extracted into ether with
<Desc / Clms Page number 3>
1% aqueous sodium hydroxide to separate the desired product, podocarpinol.
Acidification of the alkaline solution by sulfuric acid diluted in an oil which is absorbed in ether. After washing the solution in ether with water and then drying over anhydrous sodium sulfate, the ether is concentrated and hexane is added. On standing, 0.01 g of crude po-docarpinol crystallizes from solution; melting point 174-178 C. By recrystallization from ether, podocarpinol is obtained which melts at 176-178 C.
It will be noted that podocarpinol can also be prepared by reacting pcdocarpic acid with lithium aluminum hydride, as described in the Applicant's patent of the same date, entitled "Process for the reduction of podocarpic acid and its compounds. derivatives. ". It will also be noted that a determination of the melting point of a mixture of the product from the example given above and of podocarpinol prepared according to the aforementioned patent does not show any reduction. It is also noted that the podocarpinol prepared by the process of said patent gives, by methylation, o-methylpodocarpinol which does not produce any lowering when determining the melting point of a mixture with a sample of known o-methylpodocarpinol. .
It will also be noted that the reduction process described in the aforementioned patent can be applied to the preparation of o-methylpodocarpinol, the podocarpinol of which can be prepared by demethylation by the process described here.
CLAIMS
1.- As a new industrial product, the compound called podocarpinol.
** ATTENTION ** end of DESC field can contain start of CLMS **.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
BE486924A true BE486924A (en) |
Family
ID=132489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE486924D BE486924A (en) |
Country Status (1)
Country | Link |
---|---|
BE (1) | BE486924A (en) |
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0
- BE BE486924D patent/BE486924A/fr unknown
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