JPH032854B2 - - Google Patents
Info
- Publication number
- JPH032854B2 JPH032854B2 JP56082405A JP8240581A JPH032854B2 JP H032854 B2 JPH032854 B2 JP H032854B2 JP 56082405 A JP56082405 A JP 56082405A JP 8240581 A JP8240581 A JP 8240581A JP H032854 B2 JPH032854 B2 JP H032854B2
- Authority
- JP
- Japan
- Prior art keywords
- methoxyethyl
- phenoxy
- acetoxy
- isopropylamino
- formula
- 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 - Lifetime
Links
- -1 [4-(1-acetoxy-2-methoxyethyl) phenoxy]-2-propanol Chemical compound 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 claims description 6
- 238000010531 catalytic reduction reaction Methods 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- JJWLVOIRVHMVIS-UHFFFAOYSA-N isopropylamine Chemical compound CC(C)N JJWLVOIRVHMVIS-UHFFFAOYSA-N 0.000 claims description 6
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 6
- 239000012279 sodium borohydride Substances 0.000 claims description 6
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 claims description 5
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 229940098779 methanesulfonic acid Drugs 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000012442 inert solvent Substances 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 2
- 239000001294 propane Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 125000003668 acetyloxy group Chemical group [H]C([H])([H])C(=O)O[*] 0.000 claims 1
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 18
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 15
- 238000006243 chemical reaction Methods 0.000 description 14
- 239000000047 product Substances 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 13
- IUBSYMUCCVWXPE-UHFFFAOYSA-N metoprolol Chemical compound COCCC1=CC=C(OCC(O)CNC(C)C)C=C1 IUBSYMUCCVWXPE-UHFFFAOYSA-N 0.000 description 13
- 229960002237 metoprolol Drugs 0.000 description 10
- 239000000243 solution Substances 0.000 description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 6
- 239000000543 intermediate Substances 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 238000006722 reduction reaction Methods 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- 150000002148 esters Chemical class 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 229960004592 isopropanol Drugs 0.000 description 4
- 229940095064 tartrate Drugs 0.000 description 4
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 3
- CTZFISYPUSQFRR-UHFFFAOYSA-N [1-[4-[2-hydroxy-3-(propan-2-ylamino)propoxy]phenyl]-2-methoxyethyl] acetate Chemical compound COCC(OC(C)=O)C1=CC=C(OCC(O)CNC(C)C)C=C1 CTZFISYPUSQFRR-UHFFFAOYSA-N 0.000 description 3
- 229960000583 acetic acid Drugs 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 102000012740 beta Adrenergic Receptors Human genes 0.000 description 3
- 108010079452 beta Adrenergic Receptors Proteins 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000000425 proton nuclear magnetic resonance spectrum Methods 0.000 description 3
- 239000011975 tartaric acid Substances 0.000 description 3
- 235000002906 tartaric acid Nutrition 0.000 description 3
- 150000003892 tartrate salts Chemical class 0.000 description 3
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- TXXKLRMEPRZIPQ-UHFFFAOYSA-N [2-methoxy-1-[4-(oxiran-2-ylmethoxy)phenyl]ethyl] acetate Chemical compound C1=CC(C(OC(C)=O)COC)=CC=C1OCC1OC1 TXXKLRMEPRZIPQ-UHFFFAOYSA-N 0.000 description 2
- 125000005907 alkyl ester group Chemical group 0.000 description 2
- 150000007860 aryl ester derivatives Chemical group 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000012362 glacial acetic acid Substances 0.000 description 2
- 229960001300 metoprolol tartrate Drugs 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- WUBVEMGCQRSBBT-UHFFFAOYSA-N tert-butyl 4-(trifluoromethylsulfonyloxy)-3,6-dihydro-2h-pyridine-1-carboxylate Chemical class CC(C)(C)OC(=O)N1CCC(OS(=O)(=O)C(F)(F)F)=CC1 WUBVEMGCQRSBBT-UHFFFAOYSA-N 0.000 description 2
- HYMIUVGTKKAYNU-UHFFFAOYSA-N 2-methoxy-1-[4-(oxiran-2-ylmethoxy)phenyl]ethanol Chemical compound C1=CC(C(O)COC)=CC=C1OCC1OC1 HYMIUVGTKKAYNU-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical class [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 1
- 239000000674 adrenergic antagonist Substances 0.000 description 1
- 125000003158 alcohol group Chemical group 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 239000002876 beta blocker Substances 0.000 description 1
- 229940097320 beta blocking agent Drugs 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000012230 colorless oil Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 208000019622 heart disease Diseases 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 125000000468 ketone group Chemical group 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000006053 organic reaction Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- CZDYPVPMEAXLPK-UHFFFAOYSA-N tetramethylsilane Chemical compound C[Si](C)(C)C CZDYPVPMEAXLPK-UHFFFAOYSA-N 0.000 description 1
- 239000012485 toluene extract Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
【発明の詳細な説明】
本発明は一般名メトプロロールと称され、式
（）：
の構造を有する１−イソプロピルアミノ−３−
〔４−（２−メトキシエチル）−フエノキシ〕−２−
プロパノールまたはその酸付加塩の新規な製造法
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention has the generic name metoprolol and has the formula (): 1-isopropylamino-3- having the structure
[4-(2-methoxyethyl)-phenoxy]-2-
This invention relates to a novel method for producing propanol or its acid addition salt.
メトプロロールはいわゆるベータ遮断膜（β−
adrenergic blocker）と呼ばれる治療学上重要な
医薬である。ほとんどのベータ遮断膜は心臓のベ
ータ受容体（β−receptor）を遮断するだけでな
く、血管や肺のベータ受容体をも遮断するという
欠点がある。これに対しメトプロロールは心臓の
ベータ受容体のみを遮断するため、心臓病の治療
に重要な医薬である。 Metoprolol is a so-called beta-blocker (β-
It is a therapeutically important drug called an adrenergic blocker. Most beta-blocking membranes have the disadvantage that they not only block beta-receptors in the heart, but also beta-receptors in the blood vessels and lungs. In contrast, metoprolol blocks only the beta receptors in the heart, making it an important drug for the treatment of heart disease.
従来メトプロロールの製造法としては、たとえ
ばスウエーデン特許第354851号明細書に12種類の
製造法が開示されている。しかしそれらの製造法
はすべてイソプロピルアミノ基を有する側鎖を合
成することに関している。 As a conventional method for producing metoprolol, for example, 12 different production methods are disclosed in Swedish Patent No. 354,851. However, all of their preparation methods involve synthesizing side chains with isopropylamino groups.
本発明の目的は簡便かつ新規な方法で高純度の
メトプロロールをうることができる製造法を提供
することにある。 An object of the present invention is to provide a production method that can obtain highly pure metoprolol using a simple and novel method.
出発物質として式（）：
で表わされる１，２−エポキシ−３−〔４−（１−
アセトキシ−２−メトキシエチル）−フエノキシ〕
−プロパンが用いられ、このものをイソプロピル
アミンと反応させることにより式（）：
で表わされる１−イソプロピルアミノ−３−〔４
−（１−アセトキシ−２−メトキシエチル）−フエ
ノキシ〕−２−プロパノールがえられる。この式
（）で表わされる化合物は文献未載の新規化合
物である。さらにつぎの工程において、この式
（）で表わされる化合物を接触還元反応または
水素化ホウ素ナトリウムによる還元反応に供し、
メトプロロール（）に変換される。このものは
つぎに酒石酸塩などに変換される。 Formula () as starting material: 1,2-epoxy-3-[4-(1-
Acetoxy-2-methoxyethyl)-phenoxy]
-propane is used and by reacting it with isopropylamine the formula (): 1-isopropylamino-3-[4
-(1-acetoxy-2-methoxyethyl)-phenoxy]-2-propanol is obtained. The compound represented by this formula () is a new compound that has not been described in any literature. Furthermore, in the next step, the compound represented by this formula () is subjected to a catalytic reduction reaction or a reduction reaction with sodium borohydride,
Converted to metoprolol (). This substance is then converted to tartrate, etc.
出発物質として用いた１，２−エポキシ−３−
〔４−（１−アセトキシ−２−メトキシエチル）フ
エノキシ〕プロパンは、たとえば１，２−エポキ
シ−３−〔４−（１−ヒドロキシ−２−メトキシエ
チル）フエノキシ〕−プロパンと無水酢酸または
４−（１−アセトキシ−２−メトキシエチル）−フ
エノール（またはそのアルカリ金属塩）とエピク
ロルヒドリンから製造することができる。 1,2-epoxy-3- used as starting material
[4-(1-acetoxy-2-methoxyethyl)phenoxy]propane is, for example, 1,2-epoxy-3-[4-(1-hydroxy-2-methoxyethyl)phenoxy]-propane and acetic anhydride or 4- It can be produced from (1-acetoxy-2-methoxyethyl)-phenol (or an alkali metal salt thereof) and epichlorohydrin.
前述の本発明の製造法はつぎの反応式にしたが
つて進行する。 The production method of the present invention described above proceeds according to the following reaction formula.
ベンジル基の接解還元反応自体は公知の反応で
ある（たとえばOrganic Reactions、７，263
（1953）参照）。しかし、α位にアルキル基を有す
るアルキルベンジルエステルまたはアリールベン
ジルエステル上のアルキルエステル基またはアリ
ールエステル基を接触還元反応または水素化ホウ
素ナトリウムにより還元反応によつて水素で置換
する反応は知られていない。すなわちつぎの反応
式で表わされるタイプの反応は未知である。 The catalytic reduction reaction of benzyl groups itself is a known reaction (for example, Organic Reactions, 7, 263).
(1953)). However, there is no known reaction in which the alkyl ester group or aryl ester group on an alkyl benzyl ester or aryl benzyl ester having an alkyl group at the α-position is replaced with hydrogen through a catalytic reduction reaction or a reduction reaction with sodium borohydride. . In other words, the type of reaction represented by the following reaction formula is unknown.
（式中、Ｒはアルキル基またはアリール基を表
わす）。 (In the formula, R represents an alkyl group or an aryl group).
それゆえ本発明の製造法は、メトプロロール
（）の新規な製造法を提供するのみならず、α
位にアルキル基が置換したベンジルエステル上の
アルキルエステル基およびアリールエステル基を
還元反応により水素で置換する新規な方法をも提
供する。 Therefore, the production method of the present invention not only provides a new method for producing metoprolol (), but also provides α
The present invention also provides a novel method for substituting an alkyl ester group and an aryl ester group on a benzyl ester substituted with an alkyl group with hydrogen through a reduction reaction.
前述の製造法において、エステル中間体（式
（）で表わされる化合物）は好ましくはつぎの
ようにして単離される。すなわち、反応粗生成物
の水溶液に重ソウを加えてPHを7.5に調節し、さ
らに有機溶媒で抽出する。水に可溶な不純物はこ
こで水層に残される。そのような水溶性の不純物
としてはイソプロピルアミンとエピクロルヒドリ
ンとの反応生成物などがあげられる。 In the above production method, the ester intermediate (compound represented by formula ()) is preferably isolated as follows. That is, sodium chloride is added to an aqueous solution of the reaction crude product to adjust the pH to 7.5, and the mixture is further extracted with an organic solvent. Water-soluble impurities are now left in the aqueous layer. Examples of such water-soluble impurities include reaction products of isopropylamine and epichlorohydrin.
このエステル中間体の単離方法は、本発明者ら
によるフインランド特許出願第773391号、第
781001号および第792950号の各明細書に開示した
方法を改良するものである。すなわちそれらの特
許出願に開示した中間体はケトン基またはアルコ
ール基を有しているが、それらはPH7.5では遊離
せず、水に対して非常に可溶性が大きいため、前
述の方法では単離できなかつた。 A method for isolating this ester intermediate is described in Finnish Patent Application No. 773391, by the present inventors.
This is an improvement over the methods disclosed in Patents No. 781001 and No. 792950. That is, the intermediates disclosed in those patent applications have ketone groups or alcohol groups, but they are not liberated at pH 7.5 and are highly soluble in water, so they cannot be isolated by the above-mentioned method. I couldn't do it.
このようにエステル中間体（）を容易に単離
できるようになつた結果、つぎの２つの利点(a)お
よび(b)が生じた。 As a result of being able to easily isolate the ester intermediate () in this way, the following two advantages (a) and (b) have arisen.
(a) 触媒の必要量がより少量で済み、還元反応が
容易になる。(a) A smaller amount of catalyst is required, making the reduction reaction easier.
(b) 還元反応の生成物である未精製のメトプロロ
ールがより高純度となり、最終の精製がより容易
になる。(b) The product of the reduction reaction, crude metoprolol, is more pure and the final purification is easier.
エステル中間体を単離することなしに全反応工
程を行なうことももちろん可能であるが、エステ
ル中間体を単離する方が好ましい。 Although it is of course possible to carry out the entire reaction step without isolating the ester intermediate, it is preferred to isolate the ester intermediate.
１−イソプロピルアミノ−３−〔４−（１−アセ
トキシ−２−メトキシエチル）フエノキシ〕−２
−プロパノール（）は、相当するエポキシ化合
物（）とイソプロピルアミンをオートクレーブ
中で約100℃で加熱するか、またはトルエンなど
の適当な溶媒中で還流して製造される。 1-isopropylamino-3-[4-(1-acetoxy-2-methoxyethyl)phenoxy]-2
-Propanol () is prepared by heating the corresponding epoxy compound () and isopropylamine at about 100° C. in an autoclave or refluxing in a suitable solvent such as toluene.
最終工程でベンジルエステル化合物（）は接
触還元されるかまたは水素化ホウ素ナトリウムで
還元される。接触還元は好ましくはパラジウム−
炭素を触媒として行なわれる。反応は室温でも充
分な速度で進行するし、100℃でも進行するが、
非常におどろくべきことは高温よりもむしろ室温
において常圧で行なう方がより速く進行する。水
素化ホウ素ナトリウムを用いた反応は、たとえば
塩化メチレンなどの不活性溶媒中で低温下にトリ
フルオロ酢酸またはメタンスルホン酸を存在させ
て行われる。これらの還元反応によつてえられる
生成物（メトプロロール（））は最後に酒石酸
塩などに変換される。 In the final step, the benzyl ester compound () is catalytically reduced or reduced with sodium borohydride. Catalytic reduction is preferably carried out using palladium-
It is carried out using carbon as a catalyst. The reaction proceeds at a sufficient rate even at room temperature and even at 100℃, but
What is very surprising is that the process proceeds more quickly at room temperature and normal pressure than at high temperatures. The reaction with sodium borohydride is carried out in an inert solvent such as methylene chloride at low temperature in the presence of trifluoroacetic acid or methanesulfonic acid. The product obtained by these reduction reactions (metoprolol ()) is finally converted to tartrate or the like.
つぎに実施例をあげて本発明をさらに具体的に
説明する。 Next, the present invention will be explained in more detail with reference to Examples.
実施例 １
（１−イソプロピルアミノ−３−〔４−（１−ア
セトキシ−２−メトキシエチル）フエノキシ〕
−２−プロパノールの製造）
１，２−エポキシ−３−〔４−（１−アセトキシ
−２−メトキシエチル）フエノキシ〕プロパン
11.9ｇおよびイソプロピルアミン30mlをオートク
レーブ中100℃で１時間加熱するか、またはトル
エン30mlに加えて４時間還流した。Example 1 (1-isopropylamino-3-[4-(1-acetoxy-2-methoxyethyl)phenoxy]
-Production of 2-propanol) 1,2-epoxy-3-[4-(1-acetoxy-2-methoxyethyl)phenoxy]propane
11.9 g and 30 ml of isopropylamine were heated in an autoclave at 100° C. for 1 hour, or added to 30 ml of toluene and refluxed for 4 hours.
つぎに反応液を真空下で蒸発乾固してやや黄色
を帯びた油状物14.3ｇをえた。このものは精製せ
ずにつぎの工程に供した。 The reaction solution was then evaporated to dryness under vacuum to obtain 14.3 g of a slightly yellowish oil. This product was subjected to the next step without being purified.
実施例 ２
（１−イソプロピルアミノ−３−〔４−（２−メ
トキシエチル）フエノキシ〕−２−プロパノー
ルの製造）
前記実施例１の方法でえられる油状生成物10.5
ｇを氷酢酸50mlに溶かし、この溶液に10％パラジ
ウム炭素（Pd／Ｃ）触媒0.5ｇを加えた。この反
応液を50℃および常温で計算量の水素が消費され
るまで接触還元した。つぎに触媒を過して除
き、溶媒は真空下で留去した。残渣を水150mlに
溶かし、炭酸ナトリウム（Na2CO3）を加えて、
この水溶液をアルカリ性にした。つぎに生成物を
塩化メチレンで抽出し、水洗したのち乾燥した。
溶媒を留去すると固体のメトプロロール7.4ｇ
（86％）がえられた。このものはさらにヘプタン
などで再結晶した。融点44〜45℃を有する生成物
はさらに酒石酸を含有するアセトン中で相当する
酒石酸塩に変換した。このメトプロロール酒石酸
塩の融点は約120℃であつた。Example 2 (Production of 1-isopropylamino-3-[4-(2-methoxyethyl)phenoxy]-2-propanol) Oily product obtained by the method of Example 1 above 10.5
g was dissolved in 50 ml of glacial acetic acid, and 0.5 g of 10% palladium on carbon (Pd/C) catalyst was added to this solution. This reaction solution was catalytically reduced at 50° C. and room temperature until the calculated amount of hydrogen was consumed. The catalyst was then filtered off and the solvent was distilled off under vacuum. Dissolve the residue in 150 ml of water, add sodium carbonate (Na 2 CO 3 ),
This aqueous solution was made alkaline. Next, the product was extracted with methylene chloride, washed with water, and then dried.
When the solvent is distilled off, 7.4 g of solid metoprolol
(86%). This product was further recrystallized with heptane. The product with a melting point of 44-45°C was further converted to the corresponding tartrate salt in acetone containing tartaric acid. The melting point of this metoprolol tartrate was about 120°C.
実施例 ３
（１−イソプロピルアミノ−３−〔４−（１−ア
セトキシ−２−メトキシエチル）フエノキシ〕
−２−プロパノールの製造）
１，２−エポキシ−３−〔４−（１−アセトキシ
−２−メトキシエチル）フエノキシ）プロパン
10.0ｇおよびイソプロピルアミン25mlをオートク
レーブ中に加え100℃で１時間加熱した。このの
ち反応液を真空下で蒸発乾固した。えられた残渣
を５％酢酸50mlに溶かし、トルエンで洗浄して中
性の不純物を除いた。この水溶液に重ソウをPHが
7.5になるまで加えた。生成物を塩化メチレンで
抽出し（30ml×２回）、さらに塩化メチレンを留
去した。かくして無色の油状物約10.5ｇがえられ
た。Example 3 (1-isopropylamino-3-[4-(1-acetoxy-2-methoxyethyl)phenoxy]
-Production of 2-propanol) 1,2-epoxy-3-[4-(1-acetoxy-2-methoxyethyl)phenoxy)propane
10.0 g and 25 ml of isopropylamine were added into an autoclave and heated at 100°C for 1 hour. Thereafter, the reaction solution was evaporated to dryness under vacuum. The resulting residue was dissolved in 50 ml of 5% acetic acid and washed with toluene to remove neutral impurities. Add heavy sodium chloride to this aqueous solution and the PH
I added it until it reached 7.5. The product was extracted with methylene chloride (30 ml x 2), and the methylene chloride was further distilled off. Approximately 10.5 g of colorless oil was thus obtained.
生成物の 1H−NMRスペクトルのチヤートを
第１図に示す。この 1H−NMRスペクトルのチ
ヤートは内部標準としてテトラメチルシランを用
い、溶媒として重クロロホルム（CDCl3）を用い
てPerkin−Elmer Ｒ−24Aにより測定したもの
である。 A chart of the 1 H-NMR spectrum of the product is shown in FIG. This 1 H-NMR spectrum chart was measured on a Perkin-Elmer R-24A using tetramethylsilane as an internal standard and deuterated chloroform ( CDCl3 ) as a solvent.
実施例 ４
（１−イソプロピルアミノ−３−〔４−（２−メ
トキシエチル）フエノキシ〕−２−プロパノー
ルの製造）
前記実施例３の方法でえられる油状生成物10.5
ｇを氷酢酸50mlに溶かし、えられた溶液に10％パ
ラジウム炭素0.3ｇを加えた。この反応液を50〜
60℃および常圧で計算量の水素が消費されるまで
接触還元した。つぎに触媒を過して除き、溶媒
は真空下で留去した。えられた残渣を水80mlに溶
かし、トルエンで洗浄した（20ml×１回）。この
水溶液に炭酸ナトリウム（Na2CO3）を加えてア
ルカリ性としたのち、トルエンで生成物を抽出し
た。トルエン抽出液は水で洗浄したのち溶媒は留
去した。えられた残渣7.9ｇ（収率89％）は室温
で放置しておくと結晶化した（融点45℃）。この
生成物は酒石酸を含有するアセトン中で相当する
酒石酸塩に変換した。この酒石酸塩の融点は119
〜120℃であつた。Example 4 (Production of 1-isopropylamino-3-[4-(2-methoxyethyl)phenoxy]-2-propanol) Oily product obtained by the method of Example 3 above 10.5
g was dissolved in 50 ml of glacial acetic acid, and 0.3 g of 10% palladium on carbon was added to the resulting solution. Add this reaction solution to 50~
Catalytic reduction was carried out at 60°C and normal pressure until the calculated amount of hydrogen was consumed. The catalyst was then filtered off and the solvent was distilled off under vacuum. The resulting residue was dissolved in 80 ml of water and washed with toluene (20 ml x once). After adding sodium carbonate (Na 2 CO 3 ) to this aqueous solution to make it alkaline, the product was extracted with toluene. After washing the toluene extract with water, the solvent was distilled off. The resulting residue, 7.9 g (yield: 89%), crystallized on standing at room temperature (melting point: 45°C). This product was converted to the corresponding tartrate salt in acetone containing tartaric acid. The melting point of this tartrate is 119
It was ~120℃.
実施例 ５
（１−イソプロピルアミノ−３−〔４−（２−メ
トキシエチル）フエノキシ〕−２−プロパノー
ルの製造）
前記実施例３の方法でえらる１−イソプロピル
アミノ−３−〔４−（１−アセトキシ−２−メトキ
シエチル）−フエノキシ〕−２−プロパノール5.0
ｇを塩化メチレンに溶かし、フラスコ中でチツ素
ガスと通じて、水素化ホウ素ナトリウム
（NaBH4）5.0ｇを加えた。さらにトリフルオロ
酢酸20mlを０℃で滴下し、えられる溶液を０℃の
ままで８時間撹拌し、つぎに温度を20〜30℃にま
で昇温させた。反応液を氷水に注入し、水酸化ナ
トリウムを加えてアルカリ性とした。つづいて生
成物を塩化メチレンに抽出し、溶媒を留去した。
残渣をアセトン30mlに溶かし、酒石酸を加えて溶
液のPHを５〜６に調節した。かくして目的物が酒
石酸塩の結晶としてえられた（収量4.2ｇ、融点
117〜120℃）。Example 5 (Production of 1-isopropylamino-3-[4-(2-methoxyethyl)phenoxy]-2-propanol) 1-isopropylamino-3-[4-(1 -acetoxy-2-methoxyethyl)-phenoxy]-2-propanol 5.0
g was dissolved in methylene chloride, nitrogen gas was passed into the flask, and 5.0 g of sodium borohydride (NaBH 4 ) was added. Further, 20 ml of trifluoroacetic acid was added dropwise at 0°C, the resulting solution was stirred at 0°C for 8 hours, and then the temperature was raised to 20-30°C. The reaction solution was poured into ice water and made alkaline by adding sodium hydroxide. The product was then extracted into methylene chloride and the solvent was distilled off.
The residue was dissolved in 30 ml of acetone and tartaric acid was added to adjust the pH of the solution to 5-6. In this way, the target product was obtained as tartrate crystals (yield: 4.2 g, melting point:
117-120℃).
実施例 ６
（１−イソプロピルアミノ−３−〔４−（２−メ
トキシエチル）フエノキシ−２−プロパノール
の製造）
トリフルオロ酢酸に代えてメタンスルホン酸20
mlを用いたほかは実施例５と同様にして実験を行
ない、メトプロロールの酒石酸塩をえた（収量
4.0ｇ、融点117〜120℃）。Example 6 (Production of 1-isopropylamino-3-[4-(2-methoxyethyl)phenoxy-2-propanol) Methanesulfonic acid 20 in place of trifluoroacetic acid
The experiment was carried out in the same manner as in Example 5, except that ml was used, and metoprolol tartrate was obtained (yield:
4.0g, melting point 117-120°C).
第１図は１−イソプロピルアミノ−３−〔４−
（１−アセトキシ−２−メトキシエチル）フエノ
キシ〕−２−プロパノールの 1H−NMRスペクト
ルのチヤートである。
Figure 1 shows 1-isopropylamino-3-[4-
This is a chart of the 1 H-NMR spectrum of (1-acetoxy-2-methoxyethyl)phenoxy]-2-propanol.
Claims (1)
トキシ−２−メトキシエチル）−フエノキシ］
プロパンをイソプロピルアミンと無溶媒または
有機溶媒中高温で反応させる式（）： で表わされる１−イソプロピルアミノ−３−
［４−（１−アセトキシ−２−メトキシエチル）
フエノキシ］−２−プロパノールに変換する工
程および (b) 式（）で表わされる化合物のアセトキシ基
を接触還元するまたはトリフルオロ酢酸または
メタンスルホン酸を含有する不活性溶媒中で水
素化ホウ素ナトリウムを用いて還元する工程か
らなることを特徴とする式（）： で表わされる１−イソプロピルアミノ−３−
［４−（２−メトキシエチル）フエノキシ］−２
−プロパノールまたは通常の方法で変換された
その酸付加塩の製造法。[Claims] 1 (a) 1,2-epoxy-3-[4-(1-acetoxy-2-methoxyethyl)-phenoxy]
Formula () for reacting propane with isopropylamine at high temperature without solvent or in an organic solvent: 1-isopropylamino-3- represented by
[4-(1-acetoxy-2-methoxyethyl)
phenoxy]-2-propanol and (b) catalytic reduction of the acetoxy group of the compound represented by formula () or using sodium borohydride in an inert solvent containing trifluoroacetic acid or methanesulfonic acid. The formula () is characterized in that it consists of a step of reducing: 1-isopropylamino-3- represented by
[4-(2-methoxyethyl)phenoxy]-2
- A process for the preparation of propanol or its acid addition salts converted in a conventional manner.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI801792A FI801792A7 (en) | 1980-06-04 | 1980-06-04 | Method for preparing therapeutically active propanolamine. |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2136936A Division JPH0314547A (en) | 1980-06-04 | 1990-05-25 | 1-isopropylamino-3-(4-(1-acetoxy-2- methoxyethyl)-phenoxy)-2-propanol and its production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5714563A JPS5714563A (en) | 1982-01-25 |
| JPH032854B2 true JPH032854B2 (en) | 1991-01-17 |
Family
ID=8513538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8240581A Granted JPS5714563A (en) | 1980-06-04 | 1981-05-28 | Manufacture of 1-isopropylamino-3-(4-(2- methoxyethyl)-phenoxy)-2-propanol |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5714563A (en) |
| FI (1) | FI801792A7 (en) |
-
1980
- 1980-06-04 FI FI801792A patent/FI801792A7/en not_active Application Discontinuation
-
1981
- 1981-05-28 JP JP8240581A patent/JPS5714563A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FI801792A7 (en) | 1981-01-01 |
| JPS5714563A (en) | 1982-01-25 |
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